CN111669695B - Loudspeaker amplitude detection method and electronic equipment - Google Patents
Loudspeaker amplitude detection method and electronic equipment Download PDFInfo
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- CN111669695B CN111669695B CN202010691160.0A CN202010691160A CN111669695B CN 111669695 B CN111669695 B CN 111669695B CN 202010691160 A CN202010691160 A CN 202010691160A CN 111669695 B CN111669695 B CN 111669695B
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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
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
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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
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
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Abstract
The invention provides a loudspeaker amplitude detection method and electronic equipment, and relates to the technical field of communication. The electronic device includes: voice coil loudspeaker voice coil, polar plate and lead porcelain bowl be connected with the vibrating diaphragm, wherein, lead porcelain bowl and include: the ceramic base comprises a base, a ceramic bowl body arranged on the base and a pin assembly arranged on the base, wherein the pin assembly is connected with the ceramic bowl body and is also connected with a capacitive sensor; the voice coil is located in a gap between the polar plate and the side wall of the ceramic guide bowl body. The scheme of the invention is used for solving the problem that the theoretical amplitude of the loudspeaker detected by the existing scheme is inaccurate.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a loudspeaker amplitude detection method and electronic equipment.
Background
Along with the continuous expansion of the mobile phone market, more and more mobile phone users are used, the requirement on the tone quality of a mobile phone loudspeaker is higher and higher, and not only is a good low-frequency effect required, but also high volume is required. While a good low frequency effect means that a larger amplitude of the horn is required and no noise is present, this puts high demands on the control of the horn amplitude.
At present, a commonly used horn amplitude control method in the market is to establish a model based on Thiele-Small parameters and establish a model based on impedance to protect the horn amplitude, and avoid noise caused by the fact that the amplitude exceeds the maximum amplitude of the horn.
The two models are based on a certain kind of characteristic parameters of the loudspeaker to establish a theoretical model to calculate the theoretical amplitude of the loudspeaker, and the output gain is dynamically adjusted according to the theoretical amplitude, so that the aim of protecting the amplitude of the loudspeaker is fulfilled. However, these characteristic parameters are changed under different environments, which results in that the theoretical amplitude calculated by the theoretical model is inaccurate, and thus the purpose of horn amplitude protection cannot be achieved.
Disclosure of Invention
The embodiment of the invention provides a loudspeaker amplitude detection method and electronic equipment, and aims to solve the problem that theoretical amplitude obtained by the existing scheme is inaccurate.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides an electronic device, including:
a voice coil connected with the diaphragm, a polar plate and a porcelain guide bowl, wherein,
lead porcelain bowl includes: the ceramic base comprises a base, a ceramic bowl body arranged on the base and a pin assembly arranged on the base, wherein the pin assembly is connected with the ceramic bowl body and is also connected with a capacitive sensor;
the voice coil is located in a gap between the polar plate and the side wall of the ceramic guide bowl body.
In a second aspect, an embodiment of the present invention further provides a horn amplitude detection method for an electronic device as described above, including:
acquiring capacitance detected by a capacitance sensor;
and determining the horn amplitude corresponding to the capacitor according to the corresponding relation between the capacitor and the horn amplitude.
In a third aspect, an embodiment of the present invention further provides a horn amplitude detection apparatus, including:
the acquisition module is used for acquiring the capacitance detected by the capacitance sensor;
and the determining module is used for determining the loudspeaker amplitude corresponding to the capacitor according to the corresponding relation between the capacitor and the loudspeaker amplitude.
In a fourth aspect, the present invention further provides an electronic device, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the method according to the second aspect.
In a fifth aspect, the embodiment of the present invention further provides a readable storage medium, on which a program or instructions are stored, and when the program or instructions are executed by a processor, the program or instructions implement the steps of the method according to the second aspect.
In a sixth aspect, the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the method according to the second aspect.
Thus, in the embodiment of the present invention, the electronic device includes a voice coil connected to the diaphragm, a pole plate, and a ceramic guide bowl, where the ceramic guide bowl includes: the base sets up the porcelain bowl body of leading on this base, is connected with the capacitance sensor electricity through the pin subassembly that sets up on this base, and this pin subassembly still with lead this body coupling of porcelain bowl, can be convenient for capacitance sensor obtains the real-time capacitance change that the vibrating diaphragm vibration caused, follow-up can be based on real-time capacitance and accomplish the real-time detection of benefit of shaking.
Drawings
Fig. 1 is a schematic diagram of an internal structure of an electronic device according to an embodiment of the invention;
fig. 2 is a second schematic diagram of the internal structure of the electronic device according to the embodiment of the invention;
fig. 3 is a third schematic diagram of an internal structure of an electronic apparatus according to an embodiment of the invention;
FIG. 4 is a fourth schematic diagram of the internal structure of the electronic device according to the embodiment of the present invention;
FIG. 5 is a schematic flowchart of a horn amplitude detection method according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an electronic device according to an embodiment of the invention;
FIG. 7 is a schematic structural diagram of an electronic device according to another embodiment of the invention;
FIG. 8 is a circuit diagram of an electronic device according to an embodiment of the invention;
fig. 9 is a fifth schematic view of an internal structure of an electronic device according to an embodiment of the invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 4 and fig. 9, an electronic device according to an embodiment of the present invention includes:
a voice coil 6 connected with the diaphragm 5, a polar plate 7 and a ceramic guide bowl, wherein,
lead porcelain bowl includes: the ceramic base comprises a base 1, a ceramic bowl body 2 arranged on the base 1 and a pin component 3 arranged on the base 1, wherein the pin component 3 is connected with the ceramic bowl body 2, and the pin component 3 is also connected with a capacitance sensor;
the voice coil 6 is located in a gap between the polar plate 7 and the side wall of the porcelain guide bowl body 2.
Thus, in the electronic device according to the embodiment of the present invention, the voice coil 6 fixed on the speaker diaphragm 5 through the glue in the speaker structure moves when the diaphragm 5 vibrates, so that the parallel area between the voice coil 6 and the ceramic bowl body 2 changes, and the capacitance value between the voice coil 6 and the ceramic bowl body changes, and the ceramic bowl body 2 arranged on the base 1 is electrically connected to the capacitance sensor through the pin assembly 3 arranged on the base 1, so that the capacitance sensor obtains real-time capacitance change, and then real-time detection of vibration can be completed based on real-time capacitance.
In this embodiment, as shown in fig. 1, in the electronic device, a base 1 of the porcelain guide bowl is provided with two connecting structures 4 for electrically connecting the speaker unit and the circuit board, and the two connecting structures 4 are respectively arranged at corner positions of the base 1. Like this, considering that this base can appear the inhomogeneous phenomenon of atress when assembling the sound chamber, optionally, pin subassembly 3 is two, and set up respectively in the position department that two interior angles of loudspeaker base 1 correspond. Of course, the positions of the two pin assemblies 3 correspond to the positions of the two connecting structures 4, that is, one group of pin assemblies and one group of connecting structures are symmetrically arranged with the other group of pin assemblies and the other group of connecting structures, so that the assembly is uniformly stressed, the stability is improved, and the damage is avoided. For example, as shown in fig. 1, two connection structures 4 are located at the upper left corner and the upper right corner of the base 1, and two pin assemblies 3 are located at the lower left corner and the lower right corner of the horn base 1.
In addition, in this embodiment, optionally, as shown in fig. 1, the pin assembly 3 includes a connector 301, a fixing member, and an elastic member 302;
wherein, the fixing piece is arranged on the base 1;
one end of the connecting piece 301 is connected with the ceramic guide bowl body 2, and the other end of the connecting piece is connected with the fixing piece;
the elastic element 302 is connected with the fixing element and protrudes relative to the plane of the base 1, and the protruding end surface is used for connecting the capacitive sensor.
Here, fig. 1 does not show the fixing member of the lead assembly 3, which is embedded in the base 1 to improve the stability of the lead assembly 3. In order to realize the electrical connection of the ceramic bowl body 2 with the circuit board through the pin assembly 3, the connecting part 301 of the pin assembly 3 extends from the edge of the ceramic bowl body 2 toward the fixing part, the elastic part 302 of the pin assembly 3 is connected with the fixing part, and the elastic part 302 is protruded relative to the plane of the base 1, and the protruded end surface is used for connecting the capacitance sensor. However, due to the arrangement of the devices in the electronic device, the elastic member 302 cannot be directly connected to the capacitive sensor, and is required to abut against the circuit board through the end face of the protrusion, and be electrically connected to the capacitive sensor through the circuit board.
Optionally, the elastic member 301 has a structure of a few words.
Thus, the elastic element 301 can make the pin 3 more stable by being parallel to the two ends of the plane of the fixing element.
In addition, in consideration of the difference between the upper end surface of the porcelain guiding bowl body and the plane of the base, optionally, the connecting piece 301 has an L-shaped structure. Therefore, the structural strength of the pins can be improved, and stress damage is avoided.
In this embodiment, optionally, the ceramic bowl body 2 and the pin assembly 3 are of an integral metal structure.
Thus, the capacitance sensor can better acquire the capacitance changed by vibration.
In order to realize the detection of the capacitance to the amplitude, in this embodiment, optionally, a controller is further disposed on the circuit board, and the controller is connected to the capacitance sensor.
Here, the controller may determine the horn amplitude corresponding to the capacitance by constructing a correspondence relationship between the capacitance and the horn amplitude after obtaining the capacitance (e.g., real-time capacitance) detected by the capacitance sensor. And further adjusting the power amplifier output power of the loudspeaker according to a preset strategy and the determined real-time loudspeaker amplitude. For example, when the amplitude value exceeds the preset maximum amplitude value of the loudspeaker, a certain gain is reduced through the audio algorithm module to properly reduce the output power of the power amplifier, namely, the amplitude of the loudspeaker is ensured not to exceed the maximum amplitude value, and noise is prevented from being generated and a loudspeaker single body is prevented from being damaged; when the amplitude value is lower than the preset minimum amplitude value of the loudspeaker, the power amplifier output can be closed, and the power consumption of the system is reduced; when the amplitude value is between the preset minimum amplitude value and the preset maximum amplitude value of the horn, no treatment is carried out. As shown in fig. 8, the controller of the electronic device is connected to the capacitance sensor and the power amplifier of the speaker, and the capacitance sensor detects the capacitance.
In this embodiment, the capacitive sensor may be selected from inductive proximity SAR sensors.
In summary, the electronic device according to the embodiment of the present invention includes a voice coil connected to a diaphragm, a pole plate, and a ceramic guide bowl, where the ceramic guide bowl includes: a base; the ceramic guide bowl body arranged on the base is electrically connected with the capacitance sensor through the pin assembly arranged on the base, and the pin assembly is also connected with the ceramic guide bowl body, so that the capacitance sensor can conveniently obtain real-time capacitance change caused by vibration of the vibrating diaphragm, and the real-time detection of the vibration can be completed based on real-time capacitance subsequently.
As shown in fig. 5, an embodiment of the present invention further provides a method for detecting a horn amplitude of an electronic device, including:
In the embodiment of the electronic device, it is known that the pin assembly connected to the ceramic bowl body is electrically connected to the capacitance sensor, so that in this step, the real-time capacitance caused by the vibration of the diaphragm can be obtained by the capacitance sensor for subsequent amplitude determination. Wherein, this electric capacity is that the voice coil loudspeaker voice coil takes place to remove when the vibrating diaphragm vibrates for the voice coil loudspeaker voice coil and lead that parallel area can change between the porcelain bowl body, thereby the electric capacity that detects.
Here, the correspondence of the capacitance to the horn amplitude may be constructed in advance. After the capacitance is obtained in step 501, the horn amplitude corresponding to the capacitance can be determined from the correspondence.
Thus, through the steps 501 and 502, the capacitance detected by the capacitance sensor can be obtained first, and the capacitance is the capacitance detected when the voice coil moves when the diaphragm vibrates, so that the parallel area between the voice coil and the ceramic guide bowl body changes; and then, according to the corresponding relation between the capacitance and the amplitude of the horn, determining the amplitude of the horn corresponding to the capacitance, thereby obtaining more accurate real-time amplitude of the horn.
Optionally, before step 501, the method further includes:
playing a test sound source;
acquiring a test capacitor detected by the capacitor sensor and a test loudspeaker amplitude corresponding to the test capacitor in the test sound source playing process;
and constructing a corresponding relation between the capacitance and the amplitude of the loudspeaker according to the test capacitance and the amplitude of the test loudspeaker.
Therefore, by playing the test sound source and then acquiring the test capacitance detected by the capacitance sensor and the test loudspeaker amplitude corresponding to the test capacitance in the test sound source playing process, the corresponding relation between the capacitance of the electronic equipment and the loudspeaker amplitude can be established, so that the real-time loudspeaker amplitude corresponding to the real-time capacitance in real time can be determined based on the corresponding relation.
And acquiring the amplitude of the test loudspeaker corresponding to the test capacitor in the test sound source playing process, and completing the amplitude in real time by using laser equipment.
Optionally, after determining the horn amplitude corresponding to the capacitance in step 502, the method further includes:
and adjusting the power amplifier output power of the loudspeaker according to the determined amplitude of the loudspeaker.
Here, the specific implementation of the adjustment may refer to a preset policy, i.e., an adjustment scheme of the system setting. For example, when the amplitude value exceeds the preset maximum amplitude value of the loudspeaker, a certain gain is reduced through the audio algorithm module to properly reduce the output power of the power amplifier, namely, the amplitude of the loudspeaker is ensured not to exceed the maximum amplitude value, and noise is prevented from being generated and a loudspeaker single body is prevented from being damaged; when the amplitude value is lower than the preset minimum amplitude value of the loudspeaker, the power amplifier output can be closed, and the power consumption of the system is reduced; when the amplitude value is between the preset minimum amplitude value and the preset maximum amplitude value of the horn, no treatment is carried out.
FIG. 6 is a block diagram of an electronic device of one embodiment of the invention. The electronic device 600 shown in fig. 6 includes a first acquisition module 610 and a determination module 620.
A first obtaining module 610, configured to obtain a capacitance detected by a capacitance sensor;
the determining module 620 is configured to determine, according to a correspondence between a capacitor and a horn amplitude, the horn amplitude corresponding to the capacitor.
Optionally, the electronic device 600 further includes:
the playing module is used for playing the test sound source;
the second acquisition module is used for acquiring the test capacitance detected by the capacitance sensor and the test loudspeaker amplitude corresponding to the test capacitance in the test sound source playing process;
and the construction module is used for constructing the corresponding relation between the capacitance and the amplitude of the loudspeaker according to the test capacitance and the test amplitude of the loudspeaker.
Optionally, the electronic device 600 further includes:
and the processing module is used for adjusting the power amplifier output power of the loudspeaker according to the determined loudspeaker amplitude.
The electronic device 600 can implement each process implemented by the electronic device in the method embodiment of fig. 5, and is not described here again to avoid repetition. The electronic equipment of the embodiment of the invention can firstly acquire the capacitance detected by the capacitance sensor, wherein the capacitance is the capacitance detected by the fact that the voice coil moves when the vibrating diaphragm vibrates, so that the parallel area between the voice coil and the ceramic guide bowl body changes; and then determining the horn amplitude corresponding to the capacitor according to the corresponding relation between the capacitor and the horn amplitude, thereby obtaining more accurate real-time horn amplitude.
Fig. 7 is a schematic diagram of a hardware structure of an electronic device 700 for implementing various embodiments of the present invention, where the electronic device 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, a processor 710, a power supply 711, and the like. Those skilled in the art will appreciate that the electronic device configuration shown in fig. 7 does not constitute a limitation of the electronic device, and that the electronic device may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the electronic device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
Wherein the processor 710 is configured to obtain the capacitance detected by the capacitance sensor;
and determining the horn amplitude corresponding to the capacitor according to the corresponding relation between the capacitor and the horn amplitude.
Therefore, the electronic equipment can firstly acquire the capacitance detected by the capacitance sensor, and the capacitance is the capacitance detected by the voice coil moving when the vibrating diaphragm vibrates, so that the parallel area between the voice coil and the ceramic guide bowl body can be changed; and then, according to the corresponding relation between the capacitance and the amplitude of the horn, determining the amplitude of the horn corresponding to the capacitance, thereby obtaining more accurate real-time amplitude of the horn.
The audio output unit 703 may convert audio data received by the radio frequency unit 701 or the network module 702 or stored in the memory 709 into an audio signal and output as sound. Also, the audio output unit 703 may also provide audio output related to a specific function performed by the electronic apparatus 700 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 703 includes a speaker, a buzzer, a receiver, and the like.
The memory 709 may be used to store software programs as well as various data. The memory 709 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 709 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 710 is a control center of the electronic device, connects various parts of the whole electronic device by using various interfaces and lines, performs various functions of the electronic device and processes data by running or executing software programs and/or modules stored in the memory 709 and calling data stored in the memory 709, thereby monitoring the whole electronic device. Processor 710 may include one or more processing units; preferably, the processor 710 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 710.
The electronic device 700 may also include a power supply 711 (e.g., a battery) for providing power to the various components, and preferably, the power supply 711 may be logically coupled to the processor 710 via a power management system, such that functions of managing charging, discharging, and power consumption may be performed via the power management system.
In addition, the electronic device 700 includes some functional modules that are not shown, and are not described in detail herein.
Preferably, an embodiment of the present invention further provides an electronic device, which includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, and when the computer program is executed by the processor, the computer program implements each process of the above-mentioned horn amplitude detection method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the above-mentioned horn amplitude detection method embodiment, and can achieve the same technical effects, and in order to avoid repetition, the details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An electronic device, comprising:
a voice coil connected with the diaphragm, a polar plate and a ceramic guide bowl, wherein,
lead porcelain bowl includes: the ceramic base comprises a base, a ceramic bowl body arranged on the base and a pin assembly arranged on the base, wherein the pin assembly is connected with the ceramic bowl body and is also connected with a capacitive sensor;
the voice coil is positioned in a gap between the polar plate and the side wall of the ceramic guide bowl body;
the pin assembly comprises a connecting piece, a fixing piece and an elastic piece;
the fixing piece is arranged on the base;
one end of the connecting piece is connected with the ceramic guide bowl body, and the other end of the connecting piece is connected with the fixing piece;
the elastic piece is connected with the fixing piece and is protruded relative to the plane where the base is located, and the end face of the protrusion is used for being connected with the capacitance sensor.
2. The electronic device of claim 1, wherein the number of the pin assemblies is two, and the pin assemblies are respectively disposed at positions corresponding to two inner corners of the base.
3. The electronic device of claim 1, wherein the elastic member has a structure of a Chinese character ' ji ', and the connecting member has a structure of an L '.
4. The electronic device of claim 1, wherein the porcelain bowl body and the pin assembly are of a one-piece metal structure.
5. A horn amplitude detection method for an electronic device according to any one of claims 1 to 4, comprising:
acquiring capacitance detected by a capacitance sensor;
and determining the horn amplitude corresponding to the capacitor according to the corresponding relation between the capacitor and the horn amplitude.
6. The method of claim 5, wherein after determining the horn amplitude corresponding to the capacitance, further comprising:
and adjusting the power amplifier output power of the loudspeaker according to the amplitude of the loudspeaker.
7. A horn amplitude detecting apparatus for use in an electronic device according to any one of claims 1 to 4, comprising:
the acquisition module is used for acquiring the capacitance detected by the capacitance sensor;
and the determining module is used for determining the loudspeaker amplitude corresponding to the capacitor according to the corresponding relation between the capacitor and the loudspeaker amplitude.
8. The horn amplitude detection device according to claim 7, further comprising:
and the processing module is used for adjusting the power amplifier output power of the loudspeaker according to the amplitude of the loudspeaker.
9. An electronic device comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the horn amplitude detection method of claim 5 or 6.
10. A readable storage medium, storing thereon a program or instructions which, when executed by a processor, carry out the steps of the horn amplitude detection method of claim 5 or 6.
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| CN201699973U (en) * | 2010-07-23 | 2011-01-05 | 江苏裕成电子有限公司 | Loudspeaker |
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