WO2015139642A1 - Bluetooth headset noise reduction method, device and system - Google Patents

Bluetooth headset noise reduction method, device and system Download PDF

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Publication number
WO2015139642A1
WO2015139642A1 PCT/CN2015/074547 CN2015074547W WO2015139642A1 WO 2015139642 A1 WO2015139642 A1 WO 2015139642A1 CN 2015074547 W CN2015074547 W CN 2015074547W WO 2015139642 A1 WO2015139642 A1 WO 2015139642A1
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WO
WIPO (PCT)
Prior art keywords
signal
bluetooth headset
noise
terminal
bluetooth
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PCT/CN2015/074547
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French (fr)
Chinese (zh)
Inventor
张圣杰
彭春花
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努比亚技术有限公司
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Publication of WO2015139642A1 publication Critical patent/WO2015139642A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G10K2210/1081—Earphones, e.g. for telephones, ear protectors or headsets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • H04M1/6041—Portable telephones adapted for handsfree use
    • H04M1/6058—Portable telephones adapted for handsfree use involving the use of a headset accessory device connected to the portable telephone
    • H04M1/6066—Portable telephones adapted for handsfree use involving the use of a headset accessory device connected to the portable telephone including a wireless connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/02—Details of telephonic subscriber devices including a Bluetooth interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops

Definitions

  • the present invention relates to the field of terminal technologies, and in particular, to a method, device and system for implementing noise reduction of a Bluetooth headset.
  • the active noise reduction function is to generate a reverse sound wave equal to the external noise through the noise reduction system, neutralize the noise, and achieve the effect of noise reduction.
  • the active noise canceling headphones have noise reduction circuits that are compatible with external noise. Most of them use a large head-mounted design, which can be used to block external noise by using earplug cotton and earphone casings, and the first round of sound insulation. In order to have sufficient space to install active noise reduction circuits and power supplies.
  • the passive noise canceling earphone mainly forms an enclosed space by surrounding the ear, or uses a soundproof material such as a silicone earplug to block external noise. Since the noise is not processed by the noise reduction circuit chip, generally only high frequency noise is blocked, and the noise reduction effect on the low frequency noise is not obvious.
  • the technical problem to be solved by the present invention is to provide a method, device and system for realizing noise reduction of a Bluetooth headset, so as to solve the technical problem that the current Bluetooth headset is large in size, high in cost, and low in noise reduction effect.
  • a method for implementing Bluetooth headset noise reduction is applied to a terminal, and the Bluetooth headset includes at least one microphone, including the steps of:
  • an inverted signal is generated according to the noise signal and sent to the Bluetooth headset.
  • generating the inverted signal according to the noise signal further comprises:
  • the signal processor calculates a frequency spectrum according to the noise signal, and generates an inverted signal with the opposite phase and the same amplitude;
  • the inverted signal is sent back to the terminal via the Bluetooth protocol.
  • the voice data channel comprises a music channel and a call channel.
  • the music channel is turned on, the terminal and the Bluetooth headset send and receive signals based on the A2DP Bluetooth audio transmission model protocol.
  • the call channel is opened, the terminal and the Bluetooth headset are based on The HFP hands-free calling protocol sends and receives signals.
  • a method for implementing Bluetooth headset noise reduction for a Bluetooth headset, the Bluetooth headset including at least one microphone, including the steps of:
  • the received inverted signal After receiving the inverted signal sent by the terminal, the received inverted signal is played along with the music signal or the voice signal.
  • collecting the noise signal comprises collecting the noise signal by detecting low frequency noise in an environment that can be heard by the human ear.
  • the at least one microphone comprises a noise microphone for collecting noise signals.
  • collecting the noise signal comprises: acquiring the noise signal in real time or timing.
  • a method for implementing noise reduction of a Bluetooth headset including:
  • the terminal When the voice data channel is turned on, the terminal sends an instruction to collect a noise signal to the Bluetooth headset;
  • the Bluetooth headset collects a noise signal and sends it to the terminal;
  • the terminal generates an inverted signal according to the noise signal and sends the signal to the Bluetooth headset;
  • the Bluetooth headset plays the inverted signal together with the music signal or voice signal.
  • generating the inverted signal according to the noise signal further comprises:
  • the signal processor calculates a frequency spectrum according to the noise signal, and generates an inverted signal with the opposite phase and the same amplitude;
  • the inverted signal is sent back to the terminal via the Bluetooth protocol.
  • a device for implementing Bluetooth headset noise reduction for a terminal, the Bluetooth headset includes at least one microphone, and the device includes:
  • the instruction sending module is configured to send an instruction for collecting a noise signal to the Bluetooth headset when the voice data channel is turned on;
  • the inverting signal generating module is configured to: after receiving the noise signal collected by the Bluetooth headset through the at least one microphone, generate an inverted signal according to the noise signal;
  • the inverting signal transmitting module is configured to send the generated inverted signal to the Bluetooth headset.
  • the inverted signal generating module is configured to: send the noise signal to the internal signal processor for processing by using a Bluetooth protocol; the signal processor calculates the frequency spectrum according to the noise signal, and generates an inverted signal with the opposite phase and the same amplitude; and the inverted signal is Send back to the terminal via the Bluetooth protocol.
  • the voice data channel comprises a music channel and a call channel.
  • the music channel is turned on
  • the device and the Bluetooth headset send and receive signals based on the A2DP protocol.
  • the call channel is turned on, the device and the Bluetooth headset transmit based on the HFP protocol. receive signal.
  • a device for implementing Bluetooth headset noise reduction is applied to a Bluetooth headset, the Bluetooth headset includes at least one microphone, and the device includes:
  • the noise signal collecting module is configured to: after receiving the instruction for collecting the noise signal sent by the terminal, collecting the noise signal through the at least one microphone and transmitting the signal to the terminal;
  • the inverting signal receiving module is configured to receive an inverted signal sent by the terminal;
  • the playback module is configured to play the received inverted signal together with the music signal or the voice signal.
  • the noise signal acquisition module is configured to acquire a noise signal by detecting low frequency noise in an environment that can be heard by the human ear.
  • the at least one microphone comprises a noise microphone for collecting noise signals.
  • the noise signal acquisition module is configured to: collect real-time or timed noise signals.
  • a system for implementing noise reduction of a Bluetooth headset comprising a terminal and a Bluetooth headset, wherein:
  • the terminal is configured to send an instruction for collecting a noise signal to the Bluetooth headset when the voice data channel is turned on; after receiving the noise signal collected by the Bluetooth headset, generate an inverted signal according to the noise signal and send the signal to the Bluetooth headset;
  • the Bluetooth headset is set to pass the microphone after receiving the instruction to collect the noise signal sent by the terminal.
  • the wind collects the noise signal and sends it to the terminal; after receiving the inverted signal sent by the terminal, the received inverted signal is played together with the music signal or the voice signal.
  • the terminal comprises a first device for implementing noise reduction of the Bluetooth headset, and the first device comprises:
  • the instruction sending module is configured to send an instruction for collecting a noise signal to the Bluetooth headset when the voice data channel is turned on;
  • the inverted signal generating module is configured to: after receiving the noise signal collected by the Bluetooth headset, generate an inverted signal according to the noise signal;
  • the inverting signal transmitting module is configured to send the generated inverted signal to the Bluetooth headset.
  • the inverted signal generating module is configured to: send the noise signal to the internal signal processor for processing by using a Bluetooth protocol; the signal processor calculates the frequency spectrum according to the noise signal, and generates an inverted signal with the opposite phase and the same amplitude; and the inverted signal is Send back to the terminal via the Bluetooth protocol.
  • the Bluetooth headset comprises a second device for implementing noise reduction of the Bluetooth headset, and the second device comprises:
  • the noise signal collecting module is configured to: after receiving the instruction for collecting the noise signal sent by the terminal, collecting the noise signal and transmitting the signal to the terminal;
  • the inverting signal receiving module is configured to receive an inverted signal sent by the terminal;
  • the playback module is configured to play the received inverted signal together with the music signal or the voice signal.
  • the method, device and system for realizing noise reduction of a Bluetooth earphone realize the noise reduction function of the Bluetooth earphone on the terminal side by means of software, without increasing the hardware cost of noise reduction of the Bluetooth earphone, so that the Bluetooth earphone has low cost and small volume ,Easy to carry.
  • FIG. 1 is a flowchart of a method for implementing noise reduction of a Bluetooth headset applied to a terminal according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for implementing Bluetooth headset noise reduction applied to a Bluetooth headset according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for implementing noise reduction of a Bluetooth headset according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a method for implementing noise reduction of a Bluetooth headset according to a preferred embodiment of the present invention
  • FIG. 5 is a flowchart of another method for implementing Bluetooth headset noise reduction using a Bluetooth headset according to a preferred embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a module for implementing a device for reducing noise of a Bluetooth headset applied to a terminal according to an embodiment of the present disclosure
  • FIG. 7 is a schematic structural diagram of a module for implementing a Bluetooth headset to reduce noise by using a Bluetooth headset according to an embodiment of the present disclosure
  • FIG. 8 is a schematic structural diagram of a module for implementing a Bluetooth headset noise reduction system according to an embodiment of the present invention.
  • a method for implementing Bluetooth headset noise reduction according to an embodiment of the present invention is applied to a terminal, and the method includes the following steps:
  • the voice data channel includes, but is not limited to, playing a music channel and a call channel.
  • the terminal After the terminal establishes a connection with the Bluetooth headset, when the voice data channel is turned on, the terminal sends an instruction to collect the noise signal to the Bluetooth headset through the Bluetooth protocol stack, and the command is executed. Bluetooth headset captures noise.
  • the terminal after receiving the noise signal, the terminal sends the received noise signal through the Bluetooth protocol, and commands an internal signal processor (such as a digital singal processor, DSP) to process the signal.
  • the signal processor calculates its spectrum according to the noise signal, generates an inverted signal with the opposite phase and the same amplitude, and sends the inverted signal back to the terminal through the Bluetooth protocol, and the terminal sends the inverted signal to the Bluetooth headset through the Bluetooth protocol stack.
  • the terminal and the Bluetooth headset can transmit and receive signals based on the A2DP (Advanced Audio Distribution Profile) protocol
  • HFP Hands-free Profile, the protocol sends and receives signals.
  • the terminal is all electronic devices with Bluetooth function, including but not limited to mobile Mobile communication devices such as telephones, mobile phones, laptops, netbooks, portable tablets, and the like, such as MP3, MP4, PHP, PDA, digital TV, e-books, etc.
  • mobile Mobile communication devices such as telephones, mobile phones, laptops, netbooks, portable tablets, and the like, such as MP3, MP4, PHP, PDA, digital TV, e-books, etc.
  • a method for implementing Bluetooth headset noise reduction according to an embodiment of the present invention is applied to a Bluetooth headset, and the method includes the following steps:
  • S21 After receiving the instruction for collecting the noise signal sent by the terminal, collecting the noise signal and transmitting the signal to the terminal.
  • the Bluetooth headset After receiving the command, the Bluetooth headset starts detecting low-frequency noise (100-1000 Hz) in the environment that the human ear can hear, and collects a noise signal, preferably using a noise microphone (when there are at least two microphones) to collect noise. signal. And the collected noise signal is fed back to the terminal through the Bluetooth protocol stack.
  • the Bluetooth headset can transmit ambient noise through the microphone to the terminal in real time, thereby realizing the effect of real-time noise reduction, and can also periodically collect ambient noise and send it to the terminal.
  • the time interval can be comprehensively weighed the relationship between the noise reduction effect and the system resource occupancy. Settings can also be set by the user.
  • the Bluetooth headset when the music is played, the Bluetooth headset does not need to work normally, and the background environment noise can be collected in real time for real-time noise reduction. However, when the microphone is to work normally during the call, the command can only be received. After the noise data is collected once, the subsequent noise reduction of the noise signal collected this time has been performed, that is, the default is that the ambient noise is constant.
  • the Bluetooth headset plays the received inverted signal together with the music signal or the voice, so that the inverted signal can cancel the background noise signal, thereby achieving the purpose of eliminating noise.
  • the Bluetooth headset when the terminal uses the software to perform music reduction on the Bluetooth headset through the software, the Bluetooth headset may have only one microphone or multiple microphones.
  • the terminal uses the software to implement voice reduction for the Bluetooth headset, Bluetooth headsets only need to be equipped with more than two microphones, no need to equip the noise reduction circuit, making the Bluetooth headset low cost, small size and easy to carry.
  • a method for implementing Bluetooth headset noise reduction includes the following steps:
  • the terminal sends an instruction for collecting a noise signal to the Bluetooth headset.
  • the voice data channel includes, but is not limited to, playing a music channel and a call channel.
  • the terminal After the terminal establishes a connection with the Bluetooth headset, when the voice data channel is turned on, the terminal sends an instruction to collect the noise signal to the Bluetooth headset through the Bluetooth protocol stack, and the command is executed. Bluetooth headset captures noise.
  • the Bluetooth headset collects a noise signal and sends it to the terminal;
  • the Bluetooth headset After receiving the command, the Bluetooth headset starts detecting low-frequency noise (100-1000 Hz) in the environment that the human ear can hear, and collects a noise signal, preferably using a noise microphone to collect the noise signal. And the collected noise signal is fed back to the terminal through the Bluetooth protocol stack.
  • the Bluetooth headset can transmit ambient noise through the microphone to the terminal in real time, thereby realizing the effect of real-time noise reduction, and can also periodically collect ambient noise and send it to the terminal.
  • the time interval can be comprehensively weighed the relationship between the noise reduction effect and the system resource occupancy. Settings can also be set by the user.
  • the Bluetooth headset when the music is played, the Bluetooth headset does not need to work normally, and the background environment noise can be collected in real time for real-time noise reduction. However, when the microphone is to work normally during the call, the command can only be received. After the noise data is collected once, the subsequent noise reduction of the noise signal collected this time has been performed, that is, the default is that the ambient noise is constant.
  • the terminal generates an inverted signal according to the noise signal, and sends the inverted signal to the Bluetooth headset.
  • the terminal after receiving the noise signal, the terminal sends the received noise signal through the Bluetooth protocol, and commands the internal signal processor (such as DSP) to process.
  • the signal processor calculates its spectrum according to the noise signal, generates an inverted signal with the opposite phase and the same amplitude, and sends the inverted signal back to the terminal through the Bluetooth protocol, and the terminal sends the inverted signal to the Bluetooth headset through the Bluetooth protocol stack.
  • the terminal and the Bluetooth headset can transmit and receive signals based on the A2DP protocol
  • the terminal and the Bluetooth headset can transmit and receive signals based on the HFP protocol.
  • the Bluetooth headset plays the inverted signal together with the music signal or the voice signal.
  • the method of the embodiment of the invention implements the noise reduction function of the Bluetooth headset on the terminal side by means of software, without increasing the hardware cost of the Bluetooth earphone noise reduction, the volume is small, and the carrying is convenient.
  • the embodiment of the present invention implements a function of playing music noise reduction by a Bluetooth headset with one microphone or multiple microphones.
  • the method for implementing Bluetooth headset noise reduction includes the following steps:
  • the terminal sends an instruction to collect a noise signal to the Bluetooth headset.
  • the terminal can send an instruction to collect the noise signal to the Bluetooth headset through the Bluetooth protocol stack.
  • the Bluetooth headset collects the noise signal and sends it to the terminal.
  • the Bluetooth headset After receiving the instruction, the Bluetooth headset starts the microphone disposed in the earphone to detect low frequency noise (100-1000 Hz) in the environment that the human ear can hear, starts collecting noise signals, and feeds back to the terminal through the Bluetooth protocol stack.
  • the Bluetooth headset can transmit ambient noise through the microphone to the terminal in real time, thereby realizing the effect of real-time noise reduction, and can also periodically collect ambient noise and send it to the terminal, thereby comprehensively balancing the noise reduction effect and system resource occupation, and the time interval can be set by the system. It can also be set by the user.
  • the terminal generates an inverted signal according to the noise signal, and sends the inverted signal to the Bluetooth headset.
  • the terminal after receiving the noise data, the terminal sends the received noise signal through the A2DP protocol, and commands the internal signal processor (such as DSP) to process.
  • the signal processor calculates its spectrum according to the noise signal, generates an inverted signal with the opposite phase and the same amplitude, and sends the inverted signal back to the terminal through the A2DP protocol, and the terminal sends the inverted signal to the Bluetooth headset through the Bluetooth protocol stack.
  • the Bluetooth headset plays the inverted signal together with the music signal.
  • the Bluetooth headset plays the inverted signal together with the music signal, so that the inverted signal can cancel the background noise signal, thereby achieving the purpose of eliminating noise.
  • the method of the embodiment of the invention implements the function of playing the music noise reduction of the Bluetooth headset on the terminal side by means of software, without increasing the hardware cost, small volume and convenient carrying.
  • the embodiment of the present invention implements a Bluetooth headset call noise reduction function with a noise reduction microphone, and the method for implementing Bluetooth headset noise reduction includes the following steps:
  • the terminal sends an instruction to collect a noise signal to the Bluetooth headset.
  • the terminal After the terminal establishes a connection with the Bluetooth headset, when the call channel is opened, the terminal passes the Bluetooth.
  • the protocol stack sends an instruction to collect a noise signal to the Bluetooth headset, and commands the Bluetooth headset to collect noise.
  • the Bluetooth headset collects a noise signal and sends it to the terminal.
  • the Bluetooth headset After receiving the instruction, the Bluetooth headset starts the noise reduction microphone to detect the low frequency noise (100-1000 Hz) in the environment that the ear can hear, starts collecting noise, and sends the collected noise signal back to the terminal through the Bluetooth protocol stack. Since the Bluetooth headset has a noise reduction microphone, since the noise reduction microphone does not participate in the call work, the noise can be collected in real time through the noise reduction microphone and fed back to the terminal, thereby realizing the effect of real-time noise reduction, and also periodically collecting ambient noise and transmitting to the terminal. With balanced noise reduction and system resource occupation, the time interval for timing transmission can be set by the system or set by the user.
  • the terminal generates an inverted signal according to the noise signal, and sends the inverted signal to the Bluetooth headset.
  • the terminal After receiving the collected noise signal, the terminal passes the data to the signal processor (such as DSP) in the terminal through the HFP protocol, and commands the internal signal processor to generate an inverted signal.
  • the internal signal processor of the terminal calculates its spectrum according to the collected data, generates a signal with the opposite phase and the same amplitude, and sends the generated inverted signal to the terminal through the HFP protocol.
  • the inverted signal is sent to the Bluetooth headset by the terminal through the Bluetooth protocol stack.
  • the Bluetooth headset plays the inverted signal together with the voice signal.
  • the Bluetooth headset plays the inverted signal together with the voice signal, so that the inverted signal can cancel the background noise signal, thereby achieving the purpose of eliminating noise.
  • the Bluetooth headset is equipped with two or more microphones, and the noise reduction microphone is used to collect the noise signal, and the noise reduction function during the call is realized by the software mode, so that the hardware cost is not required in the terminal, and the cost of the Bluetooth headset is low. Small size and carrying.
  • an apparatus for implementing noise reduction of a Bluetooth headset is applied to a terminal, where the apparatus includes an instruction sending module 101, an inversion signal generating module 102, and an inversion signal sending module 103, where:
  • the command sending module 101 is configured to send an instruction to collect a noise signal to the Bluetooth headset when the voice data path is turned on.
  • the inverted signal generating module 102 is configured to generate an inverted signal according to the noise signal after receiving the noise signal collected by the Bluetooth headset.
  • the inverted signal generating module 102 is specifically configured to: send the noise signal to an internal signal processor (such as a DSP) for processing by using a Bluetooth protocol; the signal processor calculates a frequency spectrum according to the noise signal, and generates a reverse phase with the same phase and the same amplitude. Phase signal; the inverted signal is sent back to the terminal via the Bluetooth protocol.
  • an internal signal processor such as a DSP
  • the signal processor calculates a frequency spectrum according to the noise signal, and generates a reverse phase with the same phase and the same amplitude. Phase signal
  • the inverted signal is sent back to the terminal via the Bluetooth protocol.
  • the inverted signal transmitting module 103 is configured to send the generated inverted signal to the Bluetooth headset.
  • an apparatus for implementing Bluetooth headset noise reduction is applied to a Bluetooth headset, and the device includes a noise signal acquisition module 201, an inversion signal receiving module 202, and a playback module 203, where:
  • the noise signal collecting module 201 is configured to collect a noise signal and send the signal to the terminal after receiving the instruction for collecting the noise signal sent by the terminal.
  • the inverted signal receiving module 202 is configured to receive an inverted signal sent by the terminal.
  • the playing module 203 is configured to play the received inverted signal together with the music signal or the voice signal.
  • a system for implementing Bluetooth headset noise reduction includes a first device 10 for implementing Bluetooth headset noise reduction applied to a terminal, and a Bluetooth headset for noise reduction applied to the Bluetooth headset.
  • the first device 10 further includes an instruction transmitting module 101, an inverted signal generating module 102, and an inverted signal transmitting module 103, wherein:
  • the command sending module 101 is configured to send an instruction for collecting a noise signal to the Bluetooth headset when the voice data path is turned on;
  • the inverting signal generating module 102 is configured to: after receiving the noise signal collected by the Bluetooth headset, generate an inverted signal according to the noise signal;
  • the inverted signal transmitting module 103 is configured to send the generated inverted signal to the Bluetooth headset.
  • the inverted signal generating module 102 is specifically configured to: send the noise signal to the internal signal processing (such as DSP) for processing through the A2DP protocol or the HFP protocol; the signal processing calculates the frequency spectrum according to the noise signal, and generates the opposite phase and the same amplitude. Inverting signal; passing the inverted signal through the Bluetooth protocol Send it back to the terminal.
  • the internal signal processing such as DSP
  • the signal processing calculates the frequency spectrum according to the noise signal, and generates the opposite phase and the same amplitude.
  • Inverting signal passing the inverted signal through the Bluetooth protocol Send it back to the terminal.
  • the second device 20 further includes: a noise signal collecting module 201, an inverted signal receiving module 202, and a playing module 203, where:
  • the noise signal collecting module 201 is configured to: after receiving the instruction for collecting the noise signal sent by the terminal, collecting the noise signal and transmitting the signal to the terminal;
  • the inverting signal receiving module 202 is configured to receive an inverted signal sent by the terminal;
  • the playing module 203 is configured to play the received inverted signal together with the music signal or the voice signal.
  • the terminal is all electronic devices with Bluetooth functions, including but not limited to mobile communication devices such as mobile phones, mobile phones, notebook computers, netbooks, portable tablets, and the like, and MP3, MP4, PHP, PDA, digital television. , electronic devices such as e-books.
  • the method, device and system for realizing noise reduction of a Bluetooth earphone provided by the invention realize the noise reduction function of the bluetooth earphone on the terminal side by means of software, without increasing the hardware cost of noise reduction of the bluetooth earphone, so that the bluetooth earphone has low cost and small volume, Easy to carry.
  • the method, device and system for realizing noise reduction of a Bluetooth earphone provided by the invention realize the noise reduction function of the bluetooth earphone on the terminal side by means of software, without increasing the hardware cost of noise reduction on the side of the bluetooth earphone, so that the cost of the bluetooth earphone is low and the volume Small and easy to carry.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Telephone Function (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

The present invention relates to the technical field of electronic devices. Disclosed are a Bluetooth headset noise reduction method, device and system. The method comprises: when a voice data channel is opened, a terminal sends a noise signal acquisition instruction to a Bluetooth headset; the Bluetooth headset acquires noise signals via a microphone and sends the noise signals to the terminal; the terminal generates reverse phase signals based on the noise signals and sends the reverse phase signals to the Bluetooth headset; the Bluetooth headset plays the reverse phase signals along with music signals or voice signals. The embodiment of the present invention implements noise reduction of the Bluetooth headset on the terminal side through software, enabling the Bluetooth headset to be low in cost, small in size and convenient to carry.

Description

一种实现蓝牙耳机降噪的方法、装置和系统Method, device and system for realizing noise reduction of bluetooth earphone 技术领域Technical field
本发明涉及终端技术领域，尤其涉及一种实现蓝牙耳机降噪的方法、装置和系统。The present invention relates to the field of terminal technologies, and in particular, to a method, device and system for implementing noise reduction of a Bluetooth headset.
背景技术Background technique
随着终端，特别是移动终端及蓝牙功能的普及性越来越高，技术也越来越成熟，蓝牙耳机的应用也日益广泛。目前，蓝牙耳机降噪的方法有两种：主动降噪和被动降噪。主动降噪功能就是通过降噪系统产生与外界噪音相等的反向声波，将噪音中和，从而实现降噪的效果。主动式降噪耳机带有与外界噪声抗衡的降噪电路，它们大部分采用体积较大的头戴式设计，可利用耳塞棉和耳机外壳等构造阻挡外界噪声，进行第一轮隔音，同时也为了有充足的空间安装主动降噪电路以及电源。被动式降噪耳机主要通过包围耳朵形成封闭空间，或者采用硅胶耳塞等隔音材料来阻挡外界噪声。由于噪声没有经过降噪电路芯片处理，一般只能阻隔高频噪声，对低频噪声降噪效果不明显。With the increasing popularity of terminals, especially mobile terminals and Bluetooth functions, and the maturity of technology, the application of Bluetooth headsets has become increasingly widespread. Currently, there are two methods for noise reduction in Bluetooth headsets: active noise reduction and passive noise reduction. The active noise reduction function is to generate a reverse sound wave equal to the external noise through the noise reduction system, neutralize the noise, and achieve the effect of noise reduction. The active noise canceling headphones have noise reduction circuits that are compatible with external noise. Most of them use a large head-mounted design, which can be used to block external noise by using earplug cotton and earphone casings, and the first round of sound insulation. In order to have sufficient space to install active noise reduction circuits and power supplies. The passive noise canceling earphone mainly forms an enclosed space by surrounding the ear, or uses a soundproof material such as a silicone earplug to block external noise. Since the noise is not processed by the noise reduction circuit chip, generally only high frequency noise is blocked, and the noise reduction effect on the low frequency noise is not obvious.
无论是主动降噪耳机还是被动降噪耳机，其体积很大，携带及其不方便。此外，被动降噪耳机对低频噪声降噪效果不明显，主动降噪耳机由于带有处理芯片，增加了硬件成本且非常耗电。Whether it is an active noise canceling earphone or a passive noise canceling earphone, it is bulky and portable and inconvenient. In addition, passive noise canceling headphones have no obvious effect on low-frequency noise reduction. Active noise-cancelling headphones have a processing chip, which increases hardware cost and consumes a lot of power.
发明内容Summary of the invention
有鉴于此，本发明要解决的技术问题是提供一种实现蓝牙耳机降噪的方法、装置和系统，以解决目前蓝牙耳机体积大，成本高以及低频降噪效果不好的技术问题。In view of this, the technical problem to be solved by the present invention is to provide a method, device and system for realizing noise reduction of a Bluetooth headset, so as to solve the technical problem that the current Bluetooth headset is large in size, high in cost, and low in noise reduction effect.
本发明解决上述技术问题所采用的技术方案如下：The technical solution adopted by the present invention to solve the above technical problems is as follows:
根据本发明的一个方面，提供的一种实现蓝牙耳机降噪的方法，应用于终端，蓝牙耳机包括至少一个麦克风，包括步骤： According to an aspect of the present invention, a method for implementing Bluetooth headset noise reduction is applied to a terminal, and the Bluetooth headset includes at least one microphone, including the steps of:
当语音数据通道被开启时，向蓝牙耳机发送采集噪声信号的指令；Sending an instruction to collect a noise signal to the Bluetooth headset when the voice data channel is turned on;
接收到蓝牙耳机通过至少一个麦克风采集的噪声信号后，根据噪声信号生成反相信号并发送给蓝牙耳机。After receiving the noise signal collected by the Bluetooth headset through at least one microphone, an inverted signal is generated according to the noise signal and sent to the Bluetooth headset.
优选地，根据噪声信号生成反相信号进一步包括：Preferably, generating the inverted signal according to the noise signal further comprises:
将噪声信号通过蓝牙协议发送给内部的信号处理器处理；Sending the noise signal to the internal signal processor for processing via the Bluetooth protocol;
信号处理器根据噪声信号计算频谱，生成相位相反、振幅相同的反相信号；The signal processor calculates a frequency spectrum according to the noise signal, and generates an inverted signal with the opposite phase and the same amplitude;
将反相信号通过蓝牙协议发回给终端。The inverted signal is sent back to the terminal via the Bluetooth protocol.
优选地，语音数据通道包括播放音乐通道和通话通道，当播放音乐通道被开启时，终端和蓝牙耳机基于A2DP蓝牙音频传输模型协议发送和接收信号，当通话通道被开启时，终端和蓝牙耳机基于HFP免提通话协议发送和接收信号。Preferably, the voice data channel comprises a music channel and a call channel. When the music channel is turned on, the terminal and the Bluetooth headset send and receive signals based on the A2DP Bluetooth audio transmission model protocol. When the call channel is opened, the terminal and the Bluetooth headset are based on The HFP hands-free calling protocol sends and receives signals.
根据本发明的另一个方面，提供的一种实现蓝牙耳机降噪的方法，应用于蓝牙耳机，蓝牙耳机包括至少一个麦克风，包括步骤：According to another aspect of the present invention, a method for implementing Bluetooth headset noise reduction is provided for a Bluetooth headset, the Bluetooth headset including at least one microphone, including the steps of:
当接收到终端发送的采集噪声信号的指令后，通过至少一个麦克风采集噪声信号并发送给终端；After receiving the instruction for collecting the noise signal sent by the terminal, collecting the noise signal through at least one microphone and transmitting the signal to the terminal;
当接收到终端发送的反相信号后，将所接收到的反相信号与音乐信号或语音信号一起播放。After receiving the inverted signal sent by the terminal, the received inverted signal is played along with the music signal or the voice signal.
优选地，采集噪声信号包括：通过侦测人耳能听到的环境中的低频噪音来采集噪声信号。Preferably, collecting the noise signal comprises collecting the noise signal by detecting low frequency noise in an environment that can be heard by the human ear.
优选地，至少一个麦克风包括一噪声麦克风，用于采集噪声信号。Preferably, the at least one microphone comprises a noise microphone for collecting noise signals.
优选地，采集噪声信号包括：实时或定时的采集噪声信号。Preferably, collecting the noise signal comprises: acquiring the noise signal in real time or timing.
根据本发明的再一个方面，提供的一种实现蓝牙耳机降噪的方法包括：According to still another aspect of the present invention, a method for implementing noise reduction of a Bluetooth headset is provided, including:
当语音数据通道被开启时，终端向蓝牙耳机发送采集噪声信号的指令；When the voice data channel is turned on, the terminal sends an instruction to collect a noise signal to the Bluetooth headset;
蓝牙耳机采集噪声信号，并发送给终端；The Bluetooth headset collects a noise signal and sends it to the terminal;
终端根据噪声信号生成反相信号，并发送给蓝牙耳机；The terminal generates an inverted signal according to the noise signal and sends the signal to the Bluetooth headset;
蓝牙耳机将接收到的反相信号与音乐信号或语音信号一起播放。The Bluetooth headset plays the inverted signal together with the music signal or voice signal.
优选地，根据噪声信号生成反相信号进一步包括：Preferably, generating the inverted signal according to the noise signal further comprises:
将噪声信号通过蓝牙协议发送给内部的信号处理器处理；Sending the noise signal to the internal signal processor for processing via the Bluetooth protocol;
信号处理器根据噪声信号计算频谱，生成相位相反、振幅相同的反相信号；The signal processor calculates a frequency spectrum according to the noise signal, and generates an inverted signal with the opposite phase and the same amplitude;
将反相信号通过蓝牙协议发回给终端。 The inverted signal is sent back to the terminal via the Bluetooth protocol.
根据本发明的又一个方面，提供的一种实现蓝牙耳机降噪的装置，应用于终端，蓝牙耳机包括至少一个麦克风，该装置包括：According to still another aspect of the present invention, a device for implementing Bluetooth headset noise reduction is provided for a terminal, the Bluetooth headset includes at least one microphone, and the device includes:
指令发送模块，设置为当语音数据通道被开启时，向蓝牙耳机发送采集噪声信号的指令；The instruction sending module is configured to send an instruction for collecting a noise signal to the Bluetooth headset when the voice data channel is turned on;
反相信号生成模块，设置为接收到蓝牙耳机通过至少一个麦克风采集的噪声信号后，根据噪声信号生成反相信号；The inverting signal generating module is configured to: after receiving the noise signal collected by the Bluetooth headset through the at least one microphone, generate an inverted signal according to the noise signal;
反相信号发送模块，设置为将生成的反相信号发送给蓝牙耳机。The inverting signal transmitting module is configured to send the generated inverted signal to the Bluetooth headset.
优选地，反相信号生成模块设置为：将噪声信号通过蓝牙协议发送给内部的信号处理器处理；信号处理器根据噪声信号计算频谱，生成相位相反、振幅相同的反相信号；将反相信号通过蓝牙协议发回给终端。Preferably, the inverted signal generating module is configured to: send the noise signal to the internal signal processor for processing by using a Bluetooth protocol; the signal processor calculates the frequency spectrum according to the noise signal, and generates an inverted signal with the opposite phase and the same amplitude; and the inverted signal is Send back to the terminal via the Bluetooth protocol.
优选地，语音数据通道包括播放音乐通道和通话通道，当播放音乐通道被开启时，装置和蓝牙耳机基于A2DP协议发送和接收信号，当通话通道被开启时，装置和蓝牙耳机基于HFP协议发送和接收信号。Preferably, the voice data channel comprises a music channel and a call channel. When the music channel is turned on, the device and the Bluetooth headset send and receive signals based on the A2DP protocol. When the call channel is turned on, the device and the Bluetooth headset transmit based on the HFP protocol. receive signal.
根据本发明的又一个方面，提供的一种实现蓝牙耳机降噪的装置，应用于蓝牙耳机，蓝牙耳机包括至少一个麦克风，该装置包括：According to still another aspect of the present invention, a device for implementing Bluetooth headset noise reduction is applied to a Bluetooth headset, the Bluetooth headset includes at least one microphone, and the device includes:
噪声信号采集模块，设置为当接收到终端发送的采集噪声信号的指令后，通过至少一个麦克风采集噪声信号并发送给终端；The noise signal collecting module is configured to: after receiving the instruction for collecting the noise signal sent by the terminal, collecting the noise signal through the at least one microphone and transmitting the signal to the terminal;
反相信号接收模块，设置为接收终端发送的反相信号；The inverting signal receiving module is configured to receive an inverted signal sent by the terminal;
播放模块，设置为将接收到的反相信号与音乐信号或者语音信号一起播放。The playback module is configured to play the received inverted signal together with the music signal or the voice signal.
优选地，噪声信号采集模块设置为：通过侦测人耳能听到的环境中的低频噪音来采集噪声信号。Preferably, the noise signal acquisition module is configured to acquire a noise signal by detecting low frequency noise in an environment that can be heard by the human ear.
优选地，至少一个麦克风包括一噪声麦克风，用于采集噪声信号。Preferably, the at least one microphone comprises a noise microphone for collecting noise signals.
优选地，噪声信号采集模块设置为：实时或定时的采集噪声信号。Preferably, the noise signal acquisition module is configured to: collect real-time or timed noise signals.
根据本发明的又一个方面，提供的一种实现蓝牙耳机降噪的系统，该系统包括终端和蓝牙耳机，其中：According to still another aspect of the present invention, a system for implementing noise reduction of a Bluetooth headset is provided, the system comprising a terminal and a Bluetooth headset, wherein:
终端，设置为当语音数据通道被开启时，向蓝牙耳机发送采集噪声信号的指令；接收到蓝牙耳机采集的噪声信号后，根据所述噪声信号生成反相信号并发送给蓝牙耳机；The terminal is configured to send an instruction for collecting a noise signal to the Bluetooth headset when the voice data channel is turned on; after receiving the noise signal collected by the Bluetooth headset, generate an inverted signal according to the noise signal and send the signal to the Bluetooth headset;
蓝牙耳机，设置为当接收到终端发送的采集噪声信号的指令后，通过麦克 风采集噪声信号并发送给终端；当接收到终端发送的反相信号后，将所接收到的反相信号与音乐信号或语音信号一起播放。The Bluetooth headset is set to pass the microphone after receiving the instruction to collect the noise signal sent by the terminal. The wind collects the noise signal and sends it to the terminal; after receiving the inverted signal sent by the terminal, the received inverted signal is played together with the music signal or the voice signal.
优选地，终端包括实现蓝牙耳机降噪的第一装置，第一装置包括：Preferably, the terminal comprises a first device for implementing noise reduction of the Bluetooth headset, and the first device comprises:
指令发送模块，设置为当语音数据通道被开启时，向蓝牙耳机发送采集噪声信号的指令；The instruction sending module is configured to send an instruction for collecting a noise signal to the Bluetooth headset when the voice data channel is turned on;
反相信号生成模块，设置为接收到蓝牙耳机采集的噪声信号后，根据噪声信号生成反相信号；The inverted signal generating module is configured to: after receiving the noise signal collected by the Bluetooth headset, generate an inverted signal according to the noise signal;
反相信号发送模块，设置为将生成的反相信号发送给蓝牙耳机。The inverting signal transmitting module is configured to send the generated inverted signal to the Bluetooth headset.
优选地，反相信号生成模块设置为：将噪声信号通过蓝牙协议发送给内部的信号处理器处理；信号处理器根据噪声信号计算频谱，生成相位相反、振幅相同的反相信号；将反相信号通过蓝牙协议发回给终端。Preferably, the inverted signal generating module is configured to: send the noise signal to the internal signal processor for processing by using a Bluetooth protocol; the signal processor calculates the frequency spectrum according to the noise signal, and generates an inverted signal with the opposite phase and the same amplitude; and the inverted signal is Send back to the terminal via the Bluetooth protocol.
优选地，蓝牙耳机包括实现蓝牙耳机降噪的第二装置，第二装置包括：Preferably, the Bluetooth headset comprises a second device for implementing noise reduction of the Bluetooth headset, and the second device comprises:
噪声信号采集模块，设置为当接收到终端发送的采集噪声信号的指令后，采集噪声信号并发送给终端；The noise signal collecting module is configured to: after receiving the instruction for collecting the noise signal sent by the terminal, collecting the noise signal and transmitting the signal to the terminal;
反相信号接收模块，设置为接收终端发送的反相信号；The inverting signal receiving module is configured to receive an inverted signal sent by the terminal;
播放模块，设置为将接收到的反相信号与音乐信号或者语音信号一起播放。The playback module is configured to play the received inverted signal together with the music signal or the voice signal.
本发明实施例的实现蓝牙耳机降噪的方法、装置和系统，通过软件的方式在终端侧实现蓝牙耳机的降噪功能，无需增加蓝牙耳机降噪的硬件成本，使得蓝牙耳机成本低、体积小、携带方便。The method, device and system for realizing noise reduction of a Bluetooth earphone according to an embodiment of the present invention realize the noise reduction function of the Bluetooth earphone on the terminal side by means of software, without increasing the hardware cost of noise reduction of the Bluetooth earphone, so that the Bluetooth earphone has low cost and small volume ,Easy to carry.
附图说明DRAWINGS
图1为本发明实施例提供的一种应用于终端的实现蓝牙耳机降噪的方法的流程图；FIG. 1 is a flowchart of a method for implementing noise reduction of a Bluetooth headset applied to a terminal according to an embodiment of the present invention;
图2为本发明实施例提供的一种应用于蓝牙耳机的实现蓝牙耳机降噪的方法的流程图；2 is a flowchart of a method for implementing Bluetooth headset noise reduction applied to a Bluetooth headset according to an embodiment of the present invention;
图3为本发明实施例提供的一种实现蓝牙耳机降噪的方法流程图；FIG. 3 is a flowchart of a method for implementing noise reduction of a Bluetooth headset according to an embodiment of the present invention;
图4为本发明优选实施例提供的一种实现蓝牙耳机降噪的方法的流程图；4 is a flowchart of a method for implementing noise reduction of a Bluetooth headset according to a preferred embodiment of the present invention;
图5为本发明优选实施例提供的另一种应用蓝牙耳机的实现蓝牙耳机降噪的方法的流程图； FIG. 5 is a flowchart of another method for implementing Bluetooth headset noise reduction using a Bluetooth headset according to a preferred embodiment of the present invention; FIG.
图6为本发明实施例提供的一种应用于终端的实现蓝牙耳机降噪的装置的模块结构示意图；FIG. 6 is a schematic structural diagram of a module for implementing a device for reducing noise of a Bluetooth headset applied to a terminal according to an embodiment of the present disclosure;
图7为本发明实施例提供的一种应用于蓝牙耳机的实现蓝牙耳机降噪的装置的模块结构示意图；FIG. 7 is a schematic structural diagram of a module for implementing a Bluetooth headset to reduce noise by using a Bluetooth headset according to an embodiment of the present disclosure;
图8为本发明实施例提供的一种实现蓝牙耳机降噪的系统的模块结构示意图。FIG. 8 is a schematic structural diagram of a module for implementing a Bluetooth headset noise reduction system according to an embodiment of the present invention.
具体实施方式detailed description
为了使本发明所要解决的技术问题、技术方案及有益效果更加清楚、明白，以下结合附图和实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, in order to make the present invention. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
实施例一Embodiment 1
如图1所示，本发明实施例提供的实现蓝牙耳机降噪的方法，应用于终端，该方法包括以下步骤：As shown in FIG. 1 , a method for implementing Bluetooth headset noise reduction according to an embodiment of the present invention is applied to a terminal, and the method includes the following steps:
S11、当语音数据通道被开启时，向蓝牙耳机发送采集噪声信号的指令。S11. When the voice data channel is turned on, send an instruction to collect a noise signal to the Bluetooth headset.
具体地，语音数据通道包括但不限于如播放音乐通道和通话通道，终端与蓝牙耳机建立连接后，当语音数据通道被开启时，终端通过蓝牙协议栈向蓝牙耳机发送采集噪声信号的指令，命令蓝牙耳机采集噪声。Specifically, the voice data channel includes, but is not limited to, playing a music channel and a call channel. After the terminal establishes a connection with the Bluetooth headset, when the voice data channel is turned on, the terminal sends an instruction to collect the noise signal to the Bluetooth headset through the Bluetooth protocol stack, and the command is executed. Bluetooth headset captures noise.
S12、接收到蓝牙耳机采集的噪声信号后，根据噪声信号生成反相信号并发送给蓝牙耳机。S12. After receiving the noise signal collected by the Bluetooth headset, generate an inverted signal according to the noise signal and send the signal to the Bluetooth headset.
具体地，终端接到噪声信号后，将收到的噪声信号通过蓝牙协议发送指令，命令内部的信号处理器(如数字信号处理器，digital singnal processor，DSP)进行处理。信号处理器根据噪声信号计算其频谱，生成一个相位相反、振幅相同的反相信号，将反相信号通过蓝牙协议发回给终端，由终端将反相信号通过蓝牙协议栈发送给蓝牙耳机。其中，当播放音乐通道被开启时，终端和蓝牙耳机可以基于A2DP(Advanced Audio Distribution Profile,蓝牙音频传输模型)协议发送和接收信号；而当通话通道被开启时，终端和蓝牙耳机可以基于HFP(Hands-free Profile，免提通话)协议发送和接收信号。Specifically, after receiving the noise signal, the terminal sends the received noise signal through the Bluetooth protocol, and commands an internal signal processor (such as a digital singal processor, DSP) to process the signal. The signal processor calculates its spectrum according to the noise signal, generates an inverted signal with the opposite phase and the same amplitude, and sends the inverted signal back to the terminal through the Bluetooth protocol, and the terminal sends the inverted signal to the Bluetooth headset through the Bluetooth protocol stack. Wherein, when the playing music channel is turned on, the terminal and the Bluetooth headset can transmit and receive signals based on the A2DP (Advanced Audio Distribution Profile) protocol; and when the call channel is turned on, the terminal and the Bluetooth headset can be based on HFP ( Hands-free Profile, the protocol sends and receives signals.
本发明实施例中，终端为所有带蓝牙功能的电子设备，包括但不限于移动 电话、手机、笔记本电脑、上网本、便携式平板电脑等移动通讯设备，以及如MP3、MP4、PHP、PDA、数字电视、电子书等。In the embodiment of the present invention, the terminal is all electronic devices with Bluetooth function, including but not limited to mobile Mobile communication devices such as telephones, mobile phones, laptops, netbooks, portable tablets, and the like, such as MP3, MP4, PHP, PDA, digital TV, e-books, etc.
实施例二Embodiment 2
如图2所示，本发明实施例提供的实现蓝牙耳机降噪的方法，应用于蓝牙耳机，该方法包括以下步骤：As shown in FIG. 2, a method for implementing Bluetooth headset noise reduction according to an embodiment of the present invention is applied to a Bluetooth headset, and the method includes the following steps:
S21、当接收到终端发送的采集噪声信号的指令后，采集噪声信号并发送给终端。S21: After receiving the instruction for collecting the noise signal sent by the terminal, collecting the noise signal and transmitting the signal to the terminal.
具体地，蓝牙耳机接收到指令后，开始侦测人的耳朵能听到的环境中低频噪音(100～1000Hz)，采集噪声信号，优选为采用噪声麦克风(当至少有两个麦克风时)采集噪声信号。并通过蓝牙协议栈向终端反馈采集到的噪声信号。蓝牙耳机可以实时通过麦克风采集环境噪声发送给终端，从而实现实时降噪的效果，还可以定时采集环境噪声发送给终端，定时的时间间隔可以综合权衡降噪效果和系统资源占用的关系，由系统设定，也可以由用户设置。当然，当蓝牙耳机只有一个麦克风时，在播放音乐的时候由于蓝牙耳机不需要正常工作，可以实时采集背景环境噪声实时降噪，但在通话时由于麦克风要正常工作，则只能在接收到指令后采集一次噪声数据，后继一直以这次采集的噪声信号的反相信号进行降噪，也就是说只能默认为环境噪声是不变的。Specifically, after receiving the command, the Bluetooth headset starts detecting low-frequency noise (100-1000 Hz) in the environment that the human ear can hear, and collects a noise signal, preferably using a noise microphone (when there are at least two microphones) to collect noise. signal. And the collected noise signal is fed back to the terminal through the Bluetooth protocol stack. The Bluetooth headset can transmit ambient noise through the microphone to the terminal in real time, thereby realizing the effect of real-time noise reduction, and can also periodically collect ambient noise and send it to the terminal. The time interval can be comprehensively weighed the relationship between the noise reduction effect and the system resource occupancy. Settings can also be set by the user. Of course, when the Bluetooth headset has only one microphone, when the music is played, the Bluetooth headset does not need to work normally, and the background environment noise can be collected in real time for real-time noise reduction. However, when the microphone is to work normally during the call, the command can only be received. After the noise data is collected once, the subsequent noise reduction of the noise signal collected this time has been performed, that is, the default is that the ambient noise is constant.
S22、当接收到终端发送的反相信号后，将所接收到的反相信号与音乐信号或语音信号一起播放。S22. After receiving the inverted signal sent by the terminal, play the received inverted signal together with the music signal or the voice signal.
具体地，蓝牙耳机收到反相信号后，将接收到的反相信号和音乐信号或者语音一起播放，这样反相信号就能抵消背景噪声信号，从而达到消除噪声的目的。Specifically, after receiving the inverted signal, the Bluetooth headset plays the received inverted signal together with the music signal or the voice, so that the inverted signal can cancel the background noise signal, thereby achieving the purpose of eliminating noise.
本发明实施例中，当采用终端通过软件对蓝牙耳机实现播放音乐降噪时，蓝牙耳机可以只具有一个麦克风，也可以具有多个麦克风，当采用终端通过软件对蓝牙耳机实现通话降噪时，蓝牙耳机只需配备两个以上麦克，无须配备降噪电路，使得蓝牙耳机成本低、体积小，方便携带。In the embodiment of the present invention, when the terminal uses the software to perform music reduction on the Bluetooth headset through the software, the Bluetooth headset may have only one microphone or multiple microphones. When the terminal uses the software to implement voice reduction for the Bluetooth headset, Bluetooth headsets only need to be equipped with more than two microphones, no need to equip the noise reduction circuit, making the Bluetooth headset low cost, small size and easy to carry.
实施例三 Embodiment 3
如图3所示，本发明实施例提供的一种实现蓝牙耳机降噪的方法包括以下步骤：As shown in FIG. 3, a method for implementing Bluetooth headset noise reduction according to an embodiment of the present invention includes the following steps:
S31、当语音数据通道被开启时，终端向蓝牙耳机发送采集噪声信号的指令；S31. When the voice data channel is turned on, the terminal sends an instruction for collecting a noise signal to the Bluetooth headset.
具体地，语音数据通道包括但不限于如播放音乐通道和通话通道，终端与蓝牙耳机建立连接后，当语音数据通道被开启时，终端通过蓝牙协议栈向蓝牙耳机发送采集噪声信号的指令，命令蓝牙耳机采集噪声。Specifically, the voice data channel includes, but is not limited to, playing a music channel and a call channel. After the terminal establishes a connection with the Bluetooth headset, when the voice data channel is turned on, the terminal sends an instruction to collect the noise signal to the Bluetooth headset through the Bluetooth protocol stack, and the command is executed. Bluetooth headset captures noise.
S32、蓝牙耳机采集噪声信号，并发送给终端；S32, the Bluetooth headset collects a noise signal and sends it to the terminal;
具体地，蓝牙耳机接收到指令后，开始侦测人的耳朵能听到的环境中低频噪音(100～1000Hz)，采集噪声信号，优选为采用噪声麦克风采集噪声信号。并通过蓝牙协议栈向终端反馈采集到的噪声信号。蓝牙耳机可以实时通过麦克风采集环境噪声发送给终端，从而实现实时降噪的效果，还可以定时采集环境噪声发送给终端，定时的时间间隔可以综合权衡降噪效果和系统资源占用的关系，由系统设定，也可以由用户设置。当然，当蓝牙耳机只有一个麦克风时，在播放音乐的时候由于蓝牙耳机不需要正常工作，可以实时采集背景环境噪声实时降噪，但在通话时由于麦克风要正常工作，则只能在接收到指令后采集一次噪声数据，后继一直以这次采集的噪声信号的反相信号进行降噪，也就是说只能默认为环境噪声是不变的。Specifically, after receiving the command, the Bluetooth headset starts detecting low-frequency noise (100-1000 Hz) in the environment that the human ear can hear, and collects a noise signal, preferably using a noise microphone to collect the noise signal. And the collected noise signal is fed back to the terminal through the Bluetooth protocol stack. The Bluetooth headset can transmit ambient noise through the microphone to the terminal in real time, thereby realizing the effect of real-time noise reduction, and can also periodically collect ambient noise and send it to the terminal. The time interval can be comprehensively weighed the relationship between the noise reduction effect and the system resource occupancy. Settings can also be set by the user. Of course, when the Bluetooth headset has only one microphone, when the music is played, the Bluetooth headset does not need to work normally, and the background environment noise can be collected in real time for real-time noise reduction. However, when the microphone is to work normally during the call, the command can only be received. After the noise data is collected once, the subsequent noise reduction of the noise signal collected this time has been performed, that is, the default is that the ambient noise is constant.
S33、终端根据噪声信号生成反相信号，并发送给蓝牙耳机；S33. The terminal generates an inverted signal according to the noise signal, and sends the inverted signal to the Bluetooth headset.
具体地，终端接到噪声信号后，将收到的噪声信号通过蓝牙协议发送指令，命令内部的信号处理器(如DSP)进行处理。信号处理器根据噪声信号计算其频谱，生成一个相位相反、振幅相同的反相信号，将反相信号通过蓝牙协议发回给终端，由终端将反相信号通过蓝牙协议栈发送给蓝牙耳机。其中，当播放音乐通道被开启时，终端和蓝牙耳机可以基于A2DP协议发送和接收信号；而当通话通道被开启时，终端和蓝牙耳机可以基于HFP协议发送和接收信号。Specifically, after receiving the noise signal, the terminal sends the received noise signal through the Bluetooth protocol, and commands the internal signal processor (such as DSP) to process. The signal processor calculates its spectrum according to the noise signal, generates an inverted signal with the opposite phase and the same amplitude, and sends the inverted signal back to the terminal through the Bluetooth protocol, and the terminal sends the inverted signal to the Bluetooth headset through the Bluetooth protocol stack. Wherein, when the playing music channel is turned on, the terminal and the Bluetooth headset can transmit and receive signals based on the A2DP protocol; and when the call channel is turned on, the terminal and the Bluetooth headset can transmit and receive signals based on the HFP protocol.
S34、蓝牙耳机将反相信号与音乐信号或语音信号一起播放。S34. The Bluetooth headset plays the inverted signal together with the music signal or the voice signal.
本发明实施例的方法，通过软件的方式在终端侧实现蓝牙耳机的降噪功能，无需增加蓝牙耳机降噪的硬件成本，体积小，携带方便。The method of the embodiment of the invention implements the noise reduction function of the Bluetooth headset on the terminal side by means of software, without increasing the hardware cost of the Bluetooth earphone noise reduction, the volume is small, and the carrying is convenient.
实施例四 Embodiment 4
如图4所示，本发明实施例实现具有一个麦克风或者多个麦克风的蓝牙耳机播放音乐降噪的功能，该实现蓝牙耳机降噪的方法包括以下步骤：As shown in FIG. 4, the embodiment of the present invention implements a function of playing music noise reduction by a Bluetooth headset with one microphone or multiple microphones. The method for implementing Bluetooth headset noise reduction includes the following steps:
S41、当播放音乐通道被开启时，终端向蓝牙耳机发送采集噪声信号的指令。S41. When the playing music channel is turned on, the terminal sends an instruction to collect a noise signal to the Bluetooth headset.
具体地，终端与蓝牙耳机建立连接后，当开启播放音乐通道时，由于蓝牙耳机的麦克此时是不工作的，故可以让终端通过蓝牙协议栈向蓝牙耳机发送采集噪声信号的指令。Specifically, after the terminal establishes a connection with the Bluetooth headset, when the music channel is turned on, since the microphone of the Bluetooth headset does not work at this time, the terminal can send an instruction to collect the noise signal to the Bluetooth headset through the Bluetooth protocol stack.
S42、蓝牙耳机采集噪声信号，并发送给终端。S42, the Bluetooth headset collects the noise signal and sends it to the terminal.
具体地，蓝牙耳机接收到指令后，启动安置于耳机内的麦克风侦测人的耳朵能听到的环境中低频噪音(100～1000Hz)，开始采集噪声信号，并通过蓝牙协议栈向终端反馈采集到的噪声信号。蓝牙耳机可以实时通过麦克风采集环境噪声发送给终端，从而实现实时降噪的效果，还可以定时采集环境噪声发送给终端，从而综合平衡降噪效果和系统资源占用，定时的时间间隔可以由系统设定，也可以由用户设置。Specifically, after receiving the instruction, the Bluetooth headset starts the microphone disposed in the earphone to detect low frequency noise (100-1000 Hz) in the environment that the human ear can hear, starts collecting noise signals, and feeds back to the terminal through the Bluetooth protocol stack. The noise signal to. The Bluetooth headset can transmit ambient noise through the microphone to the terminal in real time, thereby realizing the effect of real-time noise reduction, and can also periodically collect ambient noise and send it to the terminal, thereby comprehensively balancing the noise reduction effect and system resource occupation, and the time interval can be set by the system. It can also be set by the user.
S43、终端根据噪声信号生成反相信号，并发送给蓝牙耳机。S43. The terminal generates an inverted signal according to the noise signal, and sends the inverted signal to the Bluetooth headset.
具体地，终端接到噪声数据后，将收到的噪声信号通过A2DP协议发送指令，命令内部的信号处理器(如DSP)进行处理。信号处理器根据噪声信号计算其频谱，生成一个相位相反、振幅相同的反相信号，将反相信号通过A2DP协议发回给终端，由终端将反相信号通过蓝牙协议栈发送给蓝牙耳机。Specifically, after receiving the noise data, the terminal sends the received noise signal through the A2DP protocol, and commands the internal signal processor (such as DSP) to process. The signal processor calculates its spectrum according to the noise signal, generates an inverted signal with the opposite phase and the same amplitude, and sends the inverted signal back to the terminal through the A2DP protocol, and the terminal sends the inverted signal to the Bluetooth headset through the Bluetooth protocol stack.
S44、蓝牙耳机将反相信号和音乐信号一起播放。S44. The Bluetooth headset plays the inverted signal together with the music signal.
具体地，蓝牙耳机收到反相信号后，将反相信号和音乐信号一起播放，这样反相信号就能抵消背景噪声信号，从而达到消除噪声的目的。Specifically, after receiving the inverted signal, the Bluetooth headset plays the inverted signal together with the music signal, so that the inverted signal can cancel the background noise signal, thereby achieving the purpose of eliminating noise.
本发明实施例的方法，通过软件的方式在终端侧实现蓝牙耳机播放音乐降噪的功能，无需增加硬件成本，体积小，携带方便。The method of the embodiment of the invention implements the function of playing the music noise reduction of the Bluetooth headset on the terminal side by means of software, without increasing the hardware cost, small volume and convenient carrying.
实施例五Embodiment 5
如图5所示，本发明实施例实现带有降噪麦克风的蓝牙耳机通话降噪的功能，该实现蓝牙耳机降噪的方法包括以下步骤：As shown in FIG. 5, the embodiment of the present invention implements a Bluetooth headset call noise reduction function with a noise reduction microphone, and the method for implementing Bluetooth headset noise reduction includes the following steps:
S51、当通话通道被开启时，终端向蓝牙耳机发送采集噪声信号的指令。S51. When the call channel is turned on, the terminal sends an instruction to collect a noise signal to the Bluetooth headset.
具体地，终端与蓝牙耳机建立连接后，当开启通话通道时，终端通过蓝牙 协议栈向蓝牙耳机发送采集噪声信号的指令，命令蓝牙耳机采集噪声。Specifically, after the terminal establishes a connection with the Bluetooth headset, when the call channel is opened, the terminal passes the Bluetooth. The protocol stack sends an instruction to collect a noise signal to the Bluetooth headset, and commands the Bluetooth headset to collect noise.
S52、蓝牙耳机采集噪声信号，并发送给终端。S52. The Bluetooth headset collects a noise signal and sends it to the terminal.
具体地，蓝牙耳机接收到指令后，启动降噪麦克侦测耳朵能听到的环境中低频噪音(100～1000Hz)，开始采集噪声，并通过蓝牙协议栈将采集到的噪声信号发送回终端。由于该蓝牙耳机带有降噪麦克风，由于降噪麦克风不参与通话工作，故可以实时通过降噪麦克风采集环境噪声并向终端反馈，从而实现实时降噪的效果，也定时采集环境噪声发送给终端以平衡降噪效果和系统资源占用，定时发送的时间间隔可以由系统设定，也可以由用户设置。Specifically, after receiving the instruction, the Bluetooth headset starts the noise reduction microphone to detect the low frequency noise (100-1000 Hz) in the environment that the ear can hear, starts collecting noise, and sends the collected noise signal back to the terminal through the Bluetooth protocol stack. Since the Bluetooth headset has a noise reduction microphone, since the noise reduction microphone does not participate in the call work, the noise can be collected in real time through the noise reduction microphone and fed back to the terminal, thereby realizing the effect of real-time noise reduction, and also periodically collecting ambient noise and transmitting to the terminal. With balanced noise reduction and system resource occupation, the time interval for timing transmission can be set by the system or set by the user.
S53、终端根据噪声信号生成反相信号，并发送给蓝牙耳机；S53. The terminal generates an inverted signal according to the noise signal, and sends the inverted signal to the Bluetooth headset.
具体地，终端接到采集的噪声信号后，将数据通过HFP协议交给终端内部的信号处理器(如DSP)处理，命令内部的信号处理器生成反相信号。终端内部信号处理器根据采集到的数据计算其频谱，生成一个相位相反、振幅相同的信号，将生成的反相信号通过HFP协议发回给终端。由终端通过蓝牙协议栈将反相信号给蓝牙耳机。Specifically, after receiving the collected noise signal, the terminal passes the data to the signal processor (such as DSP) in the terminal through the HFP protocol, and commands the internal signal processor to generate an inverted signal. The internal signal processor of the terminal calculates its spectrum according to the collected data, generates a signal with the opposite phase and the same amplitude, and sends the generated inverted signal to the terminal through the HFP protocol. The inverted signal is sent to the Bluetooth headset by the terminal through the Bluetooth protocol stack.
S54、蓝牙耳机将反相信号和语音信号一起播放。S54. The Bluetooth headset plays the inverted signal together with the voice signal.
具体地，蓝牙耳机收到反相信号后，将反相信号和语音信号一起播放，这样反相信号就能抵消背景噪声信号，从而达到消除噪声的目的。Specifically, after receiving the inverted signal, the Bluetooth headset plays the inverted signal together with the voice signal, so that the inverted signal can cancel the background noise signal, thereby achieving the purpose of eliminating noise.
本发明实施例中，只需蓝牙耳机配备两个或以上麦克，利用降噪麦克风采集噪声信号，通过软件方式实现通话过程中的降噪功能，无须在终端增加硬件成本，使得蓝牙耳机成本低、体积小，携带方面。In the embodiment of the present invention, only the Bluetooth headset is equipped with two or more microphones, and the noise reduction microphone is used to collect the noise signal, and the noise reduction function during the call is realized by the software mode, so that the hardware cost is not required in the terminal, and the cost of the Bluetooth headset is low. Small size and carrying.
实施例六Embodiment 6
如图6所示，本发明实施例提供的一种实现蓝牙耳机降噪的装置，应用于终端，该装置包括指令发送模块101、反相信号生成模块102和反相信号发送模块103，其中：As shown in FIG. 6 , an apparatus for implementing noise reduction of a Bluetooth headset according to an embodiment of the present invention is applied to a terminal, where the apparatus includes an instruction sending module 101, an inversion signal generating module 102, and an inversion signal sending module 103, where:
指令发送模块101，设置为语音数据通路被开启时，向蓝牙耳机发送采集噪声信号的指令。The command sending module 101 is configured to send an instruction to collect a noise signal to the Bluetooth headset when the voice data path is turned on.
反相信号生成模块102，设置为接收到蓝牙耳机采集的噪声信号后，根据噪声信号生成反相信号。 The inverted signal generating module 102 is configured to generate an inverted signal according to the noise signal after receiving the noise signal collected by the Bluetooth headset.
优选地，反相信号生成模块102具体设置为：将噪声信号通过蓝牙协议发送给内部的信号处理器(如DSP)进行处理；信号处理器根据噪声信号计算频谱，生成相位相反、振幅相同的反相信号；将反相信号通过蓝牙协议发回给终端。Preferably, the inverted signal generating module 102 is specifically configured to: send the noise signal to an internal signal processor (such as a DSP) for processing by using a Bluetooth protocol; the signal processor calculates a frequency spectrum according to the noise signal, and generates a reverse phase with the same phase and the same amplitude. Phase signal; the inverted signal is sent back to the terminal via the Bluetooth protocol.
反相信号发送模块103，设置为将生成的反相信号发送给蓝牙耳机。The inverted signal transmitting module 103 is configured to send the generated inverted signal to the Bluetooth headset.
实施例七Example 7
如图7所示，本发明实施例提供的一种实现蓝牙耳机降噪的装置，应用于蓝牙耳机，该装置包括噪声信号采集模块201、反相信号接收模块202和播放模块203，其中：As shown in FIG. 7 , an apparatus for implementing Bluetooth headset noise reduction according to an embodiment of the present invention is applied to a Bluetooth headset, and the device includes a noise signal acquisition module 201, an inversion signal receiving module 202, and a playback module 203, where:
噪声信号采集模块201，设置为当接收到终端发送的采集噪声信号的指令后，采集噪声信号并发送给终端。The noise signal collecting module 201 is configured to collect a noise signal and send the signal to the terminal after receiving the instruction for collecting the noise signal sent by the terminal.
反相信号接收模块202，设置为接收终端发送的反相信号。The inverted signal receiving module 202 is configured to receive an inverted signal sent by the terminal.
播放模块203，设置为将接收到的反相信号与音乐信号或者语音信号一起播放。The playing module 203 is configured to play the received inverted signal together with the music signal or the voice signal.
实施例八Example eight
如图8所示，本发明实施例提供的一种实现蓝牙耳机降噪的系统，包括应用于终端的实现蓝牙耳机降噪的第一装置10和应用于蓝牙耳机的实现蓝牙耳机降噪的第二装置20，其中：As shown in FIG. 8 , a system for implementing Bluetooth headset noise reduction according to an embodiment of the present invention includes a first device 10 for implementing Bluetooth headset noise reduction applied to a terminal, and a Bluetooth headset for noise reduction applied to the Bluetooth headset. Two devices 20, wherein:
第一装置10进一步包括指令发送模块101、反相信号生成模块102和反相信号发送模块103，其中：The first device 10 further includes an instruction transmitting module 101, an inverted signal generating module 102, and an inverted signal transmitting module 103, wherein:
指令发送模块101，设置为语音数据通路被开启时，向蓝牙耳机发送采集噪声信号的指令；The command sending module 101 is configured to send an instruction for collecting a noise signal to the Bluetooth headset when the voice data path is turned on;
反相信号生成模块102，设置为接收到蓝牙耳机采集的噪声信号后，根据噪声信号生成反相信号；The inverting signal generating module 102 is configured to: after receiving the noise signal collected by the Bluetooth headset, generate an inverted signal according to the noise signal;
反相信号发送模块103，设置为将生成的反相信号发送给蓝牙耳机。The inverted signal transmitting module 103 is configured to send the generated inverted signal to the Bluetooth headset.
优选地，反相信号生成模块102具体设置为：将噪声信号通过A2DP协议或者HFP协议发送给内部的信号处理(如DSP)进行处理；信号处理根据噪声信号计算频谱，生成相位相反、振幅相同的反相信号；将反相信号通过蓝牙协议 发回给终端。Preferably, the inverted signal generating module 102 is specifically configured to: send the noise signal to the internal signal processing (such as DSP) for processing through the A2DP protocol or the HFP protocol; the signal processing calculates the frequency spectrum according to the noise signal, and generates the opposite phase and the same amplitude. Inverting signal; passing the inverted signal through the Bluetooth protocol Send it back to the terminal.
第二装置20进一步包括：噪声信号采集模块201、反相信号接收模块202和播放模块203，其中：The second device 20 further includes: a noise signal collecting module 201, an inverted signal receiving module 202, and a playing module 203, where:
噪声信号采集模块201，设置为当接收到终端发送的采集噪声信号的指令后，采集噪声信号并发送给终端；The noise signal collecting module 201 is configured to: after receiving the instruction for collecting the noise signal sent by the terminal, collecting the noise signal and transmitting the signal to the terminal;
反相信号接收模块202，设置为接收终端发送的反相信号；The inverting signal receiving module 202 is configured to receive an inverted signal sent by the terminal;
播放模块203，设置为将接收到的反相信号与音乐信号或者语音信号一起播放。The playing module 203 is configured to play the received inverted signal together with the music signal or the voice signal.
本发明实施例中，终端为所有带蓝牙功能的电子设备，包括但不限于移动电话、手机、笔记本电脑、上网本、便携式平板电脑等移动通讯设备，以及如MP3、MP4、PHP、PDA、数字电视、电子书等电子设备。In the embodiment of the present invention, the terminal is all electronic devices with Bluetooth functions, including but not limited to mobile communication devices such as mobile phones, mobile phones, notebook computers, netbooks, portable tablets, and the like, and MP3, MP4, PHP, PDA, digital television. , electronic devices such as e-books.
需要说明的是，上述方法实施例一、二、三中的技术特征在实施例例六、七和八中均对应适用，这里不再重述。It should be noted that the technical features in the first, second, and third embodiments of the foregoing methods are applicable in the sixth, seventh, and eighth embodiments, and are not repeated herein.
本发明提供的实现蓝牙耳机降噪的方法、装置和系统,通过软件的方式在终端侧实现蓝牙耳机的降噪功能，无需增加蓝牙耳机降噪的硬件成本，使得蓝牙耳机成本低、体积小、携带方便。The method, device and system for realizing noise reduction of a Bluetooth earphone provided by the invention realize the noise reduction function of the bluetooth earphone on the terminal side by means of software, without increasing the hardware cost of noise reduction of the bluetooth earphone, so that the bluetooth earphone has low cost and small volume, Easy to carry.
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤是可以通过程序来控制相关的硬件完成，所述的程序可以在存储于一计算机可读取存储介质中，所述的存储介质，如ROM/RAM、磁盘、光盘等。A person of ordinary skill in the art can understand that all or part of the steps in implementing the above embodiments may be controlled by a program to control related hardware, and the program may be stored in a computer readable storage medium, the storage. Media, such as ROM/RAM, disk, CD, etc.
以上参照附图说明了本发明的优选实施例，并非因此局限本发明的权利范围。本领域技术人员不脱离本发明的范围和实质内所作的任何修改、等同替换和改进，均应在本发明的权利范围之内。The preferred embodiments of the present invention have been described above with reference to the drawings, and are not intended to limit the scope of the invention. Any modifications, equivalent substitutions and improvements made by those skilled in the art without departing from the scope and spirit of the invention are intended to be included within the scope of the invention.
工业实用性Industrial applicability
本发明提供的实现蓝牙耳机降噪的方法、装置和系统,通过软件的方式在终端侧实现蓝牙耳机的降噪功能，无需在蓝牙耳机侧增加降噪的硬件成本，使得蓝牙耳机成本低、体积小、携带方便。 The method, device and system for realizing noise reduction of a Bluetooth earphone provided by the invention realize the noise reduction function of the bluetooth earphone on the terminal side by means of software, without increasing the hardware cost of noise reduction on the side of the bluetooth earphone, so that the cost of the bluetooth earphone is low and the volume Small and easy to carry.

Claims (20)

  1. 一种实现蓝牙耳机降噪的方法，应用于终端，所述蓝牙耳机包括至少一个麦克风，其特征在于，包括步骤：A method for implementing noise reduction of a Bluetooth headset is applied to a terminal, where the Bluetooth headset includes at least one microphone, and the method includes the steps of:
    当语音数据通道被开启时，向所述蓝牙耳机发送采集噪声信号的指令；Sending an instruction to collect a noise signal to the Bluetooth headset when the voice data channel is turned on;
    接收到所述蓝牙耳机通过至少一个所述麦克风采集的噪声信号后，根据所述噪声信号生成反相信号并发送给所述蓝牙耳机。After receiving the noise signal collected by the Bluetooth headset through the at least one of the microphones, generating an inverted signal according to the noise signal and transmitting the signal to the Bluetooth headset.
  2. 根据权利要求1所述的实现蓝牙耳机降噪的方法，其中，所述根据所述噪声信号生成反相信号进一步包括：The method for implementing noise reduction of a Bluetooth headset according to claim 1, wherein the generating the inverted signal according to the noise signal further comprises:
    将所述噪声信号通过蓝牙协议发送给内部的信号处理器处理；Transmitting the noise signal to an internal signal processor for processing via a Bluetooth protocol;
    所述信号处理器根据所述噪声信号计算频谱，生成相位相反、振幅相同的反相信号；The signal processor calculates a frequency spectrum according to the noise signal, and generates an inverted signal with opposite phases and the same amplitude;
    将所述反相信号通过所述蓝牙协议发回给所述终端。And transmitting the inverted signal to the terminal by using the Bluetooth protocol.
  3. 根据权利要求1所述的实现蓝牙耳机降噪的方法，其中，所述语音数据通道包括播放音乐通道和通话通道，当所述播放音乐通道被开启时，所述终端和所述蓝牙耳机基于A2DP蓝牙音频传输模型协议发送和接收信号，当所述通话通道被开启时，所述终端和所述蓝牙耳机基于HFP免提通话协议发送和接收信号。The method for implementing Bluetooth headset noise reduction according to claim 1, wherein the voice data channel comprises a play music channel and a call channel, and when the play music channel is turned on, the terminal and the Bluetooth headset are based on A2DP The Bluetooth audio transmission model protocol transmits and receives signals, and when the call channel is turned on, the terminal and the Bluetooth headset transmit and receive signals based on the HFP hands-free calling protocol.
  4. 一种实现蓝牙耳机降噪的方法，应用于蓝牙耳机，所述蓝牙耳机包括至少一个麦克风，其特征在于，包括步骤：A method for implementing noise reduction of a Bluetooth headset is applied to a Bluetooth headset, and the Bluetooth headset includes at least one microphone, and the method includes the steps of:
    当接收到终端发送的采集噪声信号的指令后，通过至少一个所述麦克风采集噪声信号并发送给所述终端；After receiving the instruction to collect the noise signal sent by the terminal, collecting the noise signal through at least one of the microphones and transmitting the signal to the terminal;
    当接收到所述终端发送的反相信号后，将所接收到的反相信号与音乐信号或语音信号一起播放。After receiving the inverted signal sent by the terminal, the received inverted signal is played along with the music signal or the voice signal.
  5. 根据权利要求4所述的实现蓝牙耳机降噪的方法，其中，所述采集噪声信号包括：通过侦测人耳能听到的环境中的低频噪音来采集噪声信号。The method for implementing noise reduction of a Bluetooth headset according to claim 4, wherein the collecting the noise signal comprises: collecting a noise signal by detecting low frequency noise in an environment that can be heard by the human ear.
  6. 根据权利要求4所述的实现蓝牙耳机降噪的方法，其中，所述至少一个所述麦克风包括一噪声麦克风，用于采集噪声信号。The method of implementing Bluetooth headset noise reduction according to claim 4, wherein said at least one of said microphones comprises a noise microphone for collecting a noise signal.
  7. 根据权利要求4所述的实现蓝牙耳机降噪的方法，其中，所述采集噪声 信号包括：实时或定时的采集噪声信号。The method for implementing noise reduction of a Bluetooth headset according to claim 4, wherein said collecting noise Signals include: real-time or timing acquisition of noise signals.
  8. 一种实现蓝牙耳机降噪的方法，其特征在于，包括步骤：A method for realizing noise reduction of a Bluetooth headset, comprising the steps of:
    当语音数据通道被开启时，终端向蓝牙耳机发送采集噪声信号的指令；When the voice data channel is turned on, the terminal sends an instruction to collect a noise signal to the Bluetooth headset;
    蓝牙耳机采集噪声信号，并发送给终端；The Bluetooth headset collects a noise signal and sends it to the terminal;
    终端根据所述噪声信号生成反相信号，并发送给蓝牙耳机；The terminal generates an inverted signal according to the noise signal, and sends the signal to the Bluetooth headset;
    蓝牙耳机将接收到的反相信号与音乐信号或语音信号一起播放。The Bluetooth headset plays the inverted signal together with the music signal or voice signal.
  9. 根据权利要求8所述的实现蓝牙耳机降噪的方法，其中，所述根据所述噪声信号生成反相信号进一步包括：The method for implementing noise reduction of a Bluetooth headset according to claim 8, wherein the generating the inverted signal according to the noise signal further comprises:
    将噪声信号通过蓝牙协议发送给内部的信号处理器处理；Sending the noise signal to the internal signal processor for processing via the Bluetooth protocol;
    信号处理器根据所述噪声信号计算频谱，生成相位相反、振幅相同的反相信号；The signal processor calculates a frequency spectrum according to the noise signal, and generates an inverted signal with the opposite phase and the same amplitude;
    将所述反相信号通过蓝牙协议发回给终端。The inverted signal is sent back to the terminal via the Bluetooth protocol.
  10. 一种实现蓝牙耳机降噪的装置，应用于终端，所述蓝牙耳机包括至少一个麦克风，其特征在于，该装置包括：A device for implementing noise reduction of a Bluetooth headset is applied to a terminal, the Bluetooth headset includes at least one microphone, and the device includes:
    指令发送模块，设置为当语音数据通道被开启时，向蓝牙耳机发送采集噪声信号的指令；The instruction sending module is configured to send an instruction for collecting a noise signal to the Bluetooth headset when the voice data channel is turned on;
    反相信号生成模块，设置为接收到蓝牙耳机通过至少一个所述麦克风采集的噪声信号后，根据噪声信号生成反相信号；The inverted signal generating module is configured to: after receiving the noise signal collected by the Bluetooth headset through the at least one of the microphones, generate an inverted signal according to the noise signal;
    反相信号发送模块，设置为将生成的反相信号发送给蓝牙耳机。The inverting signal transmitting module is configured to send the generated inverted signal to the Bluetooth headset.
  11. 根据权利要求10所述实现蓝牙耳机降噪的装置，其中，所述反相信号生成模块设置为：将噪声信号通过蓝牙协议发送给内部的信号处理器处理；信号处理器根据所述噪声信号计算频谱，生成相位相反、振幅相同的反相信号；将所述反相信号通过蓝牙协议发回给终端。The apparatus for implementing Bluetooth headset noise reduction according to claim 10, wherein the inverted signal generating module is configured to: send a noise signal to an internal signal processor for processing via a Bluetooth protocol; and the signal processor calculates the noise signal according to the noise signal The spectrum generates an inverted signal with the opposite phase and the same amplitude; the inverted signal is sent back to the terminal through the Bluetooth protocol.
  12. 根据权利要求10所述的实现蓝牙耳机降噪的装置，其中，所述语音数据通道包括播放音乐通道和通话通道，当所述播放音乐通道被开启时，装置和蓝牙耳机基于A2DP协议发送和接收信号，当所述通话通道被开启时，装置和蓝牙耳机基于HFP协议发送和接收信号。The apparatus for implementing noise reduction of a Bluetooth headset according to claim 10, wherein the voice data channel comprises a music channel and a call channel, and when the music channel is turned on, the device and the Bluetooth headset transmit and receive based on the A2DP protocol. Signal, when the call channel is turned on, the device and the Bluetooth headset transmit and receive signals based on the HFP protocol.
  13. 一种实现蓝牙耳机降噪的装置，应用于蓝牙耳机，所述蓝牙耳机包括至少一个麦克风，其特征在于，该装置包括： A device for implementing noise reduction of a Bluetooth headset is applied to a Bluetooth headset, the Bluetooth headset comprising at least one microphone, wherein the device comprises:
    噪声信号采集模块，设置为当接收到终端发送的采集噪声信号的指令后，通过至少一个所述麦克风采集噪声信号并发送给终端；The noise signal collecting module is configured to: after receiving the instruction for collecting the noise signal sent by the terminal, collecting the noise signal through at least one of the microphones and transmitting the signal to the terminal;
    反相信号接收模块，设置为接收终端发送的反相信号；The inverting signal receiving module is configured to receive an inverted signal sent by the terminal;
    播放模块，设置为将接收到的反相信号与音乐信号或者语音信号一起播放。The playback module is configured to play the received inverted signal together with the music signal or the voice signal.
  14. 根据权利要求13所述的实现蓝牙耳机降噪的装置，其中，所述噪声信号采集模块设置为：通过侦测人耳能听到的环境中的低频噪音来采集噪声信号。The apparatus for implementing noise reduction of a Bluetooth headset according to claim 13, wherein the noise signal acquisition module is configured to acquire a noise signal by detecting low frequency noise in an environment that can be heard by a human ear.
  15. 根据权利要求13所述的实现蓝牙耳机降噪的装置，其中，所述至少一个所述麦克风包括一噪声麦克风，用于采集噪声信号。The apparatus for implementing noise reduction of a Bluetooth headset according to claim 13, wherein said at least one of said microphones comprises a noise microphone for collecting a noise signal.
  16. 根据权利要求13所述的实现蓝牙耳机降噪的装置，其中，所述噪声信号采集模块设置为：实时或定时的采集噪声信号。The apparatus for implementing noise reduction of a Bluetooth headset according to claim 13, wherein the noise signal acquisition module is configured to acquire a noise signal in real time or timing.
  17. 一种实现蓝牙耳机降噪的系统，包括终端和蓝牙耳机，其特征在于：A system for realizing noise reduction of a Bluetooth headset, comprising a terminal and a Bluetooth headset, characterized in that:
    终端，设置为当语音数据通道被开启时，向蓝牙耳机发送采集噪声信号的指令；接收到蓝牙耳机采集的噪声信号后，根据所述噪声信号生成反相信号并发送给蓝牙耳机；The terminal is configured to send an instruction for collecting a noise signal to the Bluetooth headset when the voice data channel is turned on; after receiving the noise signal collected by the Bluetooth headset, generate an inverted signal according to the noise signal and send the signal to the Bluetooth headset;
    蓝牙耳机，设置为当接收到终端发送的采集噪声信号的指令后，采集噪声信号并发送给终端；当接收到终端发送的反相信号后，将所接收到的反相信号与音乐信号或语音信号一起播放。The Bluetooth headset is set to receive a noise signal and send it to the terminal after receiving the instruction to collect the noise signal sent by the terminal; and after receiving the inverted signal sent by the terminal, the received inverted signal and the music signal or voice The signal plays together.
  18. 根据权利要求17所述的实现蓝牙耳机降噪的系统，其中，所述终端包括实现蓝牙耳机降噪的第一装置，所述第一装置包括：The system for implementing Bluetooth headset noise reduction according to claim 17, wherein the terminal comprises a first device for implementing Bluetooth headset noise reduction, the first device comprising:
    指令发送模块，设置为当语音数据通道被开启时，向蓝牙耳机发送采集噪声信号的指令；The instruction sending module is configured to send an instruction for collecting a noise signal to the Bluetooth headset when the voice data channel is turned on;
    反相信号生成模块，设置为接收到蓝牙耳机采集的噪声信号后，根据噪声信号生成反相信号；The inverted signal generating module is configured to: after receiving the noise signal collected by the Bluetooth headset, generate an inverted signal according to the noise signal;
    反相信号发送模块，设置为将生成的反相信号发送给蓝牙耳机。The inverting signal transmitting module is configured to send the generated inverted signal to the Bluetooth headset.
  19. 根据权利要求18所述的实现蓝牙耳机降噪的系统，其中，所述反相信号生成模块设置为：将噪声信号通过蓝牙协议发送给内部的信号处理器处理；信号处理器根据所述噪声信号计算频谱，生成相位相反、振幅相同的反相信号；将所述反相信号通过蓝牙协议发回给终端。The system for implementing Bluetooth headset noise reduction according to claim 18, wherein the inversion signal generating module is configured to: send a noise signal to an internal signal processor for processing via a Bluetooth protocol; and the signal processor according to the noise signal Calculating the spectrum, generating an inverted signal with the opposite phase and the same amplitude; sending the inverted signal back to the terminal through the Bluetooth protocol.
  20. 根据权利要求17所述的实现蓝牙耳机降噪的系统，其中，所述蓝牙耳 机包括实现蓝牙耳机降噪的第二装置，所述第二装置包括：A system for implementing Bluetooth headset noise reduction according to claim 17, wherein said Bluetooth ear The device includes a second device for implementing noise reduction of the Bluetooth headset, and the second device includes:
    噪声信号采集模块，设置为当接收到终端发送的采集噪声信号的指令后，采集噪声信号并发送给终端；The noise signal collecting module is configured to: after receiving the instruction for collecting the noise signal sent by the terminal, collecting the noise signal and transmitting the signal to the terminal;
    反相信号接收模块，设置为接收终端发送的反相信号；The inverting signal receiving module is configured to receive an inverted signal sent by the terminal;
    播放模块，设置为将接收到的反相信号与音乐信号或者语音信号一起播放。 The playback module is configured to play the received inverted signal together with the music signal or the voice signal.
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