JP2016178422A - Voice radio transmission system, speaker apparatus, and source apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow operation to change voice such as sound quality change operation and content change operation to be performed from a speaker apparatus side in a voice radio transmission system in which a source apparatus transmits a voice signal to a plurality of speaker apparatuses by radio communication.SOLUTION: In a system of the present invention, a speaker apparatus 2 accepts user operation, and outputs a voice signal changed according to an operation signal indicated by the user operation. Here, the speaker apparatus 2 transmits the operation signal to a source apparatus 1, and the source apparatus 1 changes a voice signal or voice signal processing parameter to output to a plurality of speaker apparatuses 2 on the basis of the received operation signal. Alternatively, the speaker apparatus 2 applies signal processing to the voice signal received from the source apparatus 1 with a voice signal processing parameter indicated by the operation signal and transmits an execution notice of the signal processing to the source apparatus 1.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a voice wireless transmission system that wirelessly transmits a voice signal, a speaker device in the system, and a source device.

  2. Description of the Related Art Conventionally, some speaker devices are provided with an adjustment knob for adjusting the volume or the like of output sound. In addition, as a technique for operating the speaker device, Patent Document 1 discloses a speaker device including a light receiving element that receives an operation signal from a remote controller (remote controller). In this speaker device, it is possible to select (switch) the source device that inputs the audio signal, adjust the sound quality in the built-in signal processing unit, and adjust the volume in the built-in audio amplifier based on the operation from the remote control. ing.

  Patent Document 2 discloses a speaker device (that is, a speaker array device) in which a plurality of speaker units are arranged and includes a light receiving unit that receives an operation signal from a remote controller. In this speaker array device, an operation for changing the angle and focal length of the sound beam is received by the remote controller, and the delay amount of the sound signal output from each speaker unit and the level of the sound signal are changed according to the operation. . Also, with this technology, it is possible to accept volume adjustment and content selection operations at an operation unit provided in a content reproduction apparatus connected to the speaker array device.

  On the other hand, in recent years, the number of devices utilizing wireless communication in AV (Audio Visual) devices has increased, and for audio, WiFi (registered trademark, the same applies hereinafter), ZigBee (registered trademark, the same applies hereinafter), Bluetooth (registered trademark). The same shall apply hereinafter), Wireless Speaker and Audio (WiSA; registered trademark, the same shall apply hereinafter), and the like. By using wireless communication for audio signal transmission, a speaker device and a source device such as a player or an amplifier are connected wirelessly, which is convenient because there is no need to route a cable.

JP 2014-216985 A JP 2008-35252 A

  In a conventional system that transmits audio signals from a source device to multiple speaker devices via wireless communication, the speaker device is placed in a location other than the installation location such as the room where the source device is installed, taking advantage of the wireless characteristics. In addition, it is possible to construct a listening environment in which contents are individually listened to at a plurality of installation locations (installation rooms). In such a listening environment, it is necessary to construct a system that divides a plurality of speaker devices wirelessly connected to a source device into a plurality of groups and reproduces content for each group.

  However, when an attempt is made to construct such a listening environment, a change operation that changes content, audio characteristics, etc., basically goes to the installation location (installation room) of the source device and is performed on the source device. Become. That is, when a plurality of speaker devices wirelessly connected to the source device are divided into a plurality of groups and the content is reproduced for each group, the change operation is basically performed on the source device. Of course, it is possible to construct a listening environment in which only one group exists, that is, a listening environment in which grouping is not performed. In such a case as well, changing operations such as changing the sound quality and content of the entire speaker device Will be performed on the source device. When the operation is performed on the source device side, particularly in a listening environment in which a plurality of speaker devices are divided into a plurality of groups, the operation cannot be performed unless it is moved to the installation location of the source device, which is inconvenient.

  Even if the technology described in Patent Documents 1 and 2 is applied and the above change operation can be performed on the speaker device by operating a remote controller or the like from a room where the source device is not installed, only the speaker device is configured. Such a change is reflected in other speaker devices and source devices. In this case, it is necessary for the user to perform the above change operation such as adjusting the sound quality based on his / her sense for each speaker device, which is troublesome.

Therefore, it is required to accept the change operation from the speaker device side so that the sound can be changed to suit the listening environment.
In the technique described in Patent Document 2, the sound signal level output from the signal processing unit in the speaker array device is adjusted by mounting the light receiving unit that receives the operation signal from the remote control in the speaker array device. However, it is only possible to adjust the audio signal level of each speaker unit in one speaker array device installed in one place.

  The present invention has been made in view of the above situation, and an object of the present invention is to perform a sound quality changing operation and a content changing in an audio wireless transmission system that transmits an audio signal from a source device to a plurality of speaker devices by wireless communication. It is intended to enable an operation such as an operation to change sound from the speaker device side.

  In order to solve the above problems, a first technical means of the present invention is an audio wireless system comprising: a plurality of speaker devices; and a source device that transmits audio signals to the plurality of speaker devices by wireless communication. In the transmission system, the speaker device receives a user operation and outputs the audio signal changed according to an operation signal indicated by the user operation.

  According to a second technical means of the present invention, in the first technical means, the speaker device transmits the operation signal to the source device, and the source device is based on the operation signal received from the speaker device. An audio signal to be output to the plurality of speaker devices or an audio signal processing parameter is changed.

  According to a third technical means of the present invention, in the first technical means, the speaker device performs signal processing on the audio signal received from the source device with an audio signal processing parameter indicated by the operation signal, The signal processing execution notification is transmitted to the source device.

  According to a fourth technical means of the present invention, in any one of the first to third technical means, the speaker device includes a receiving unit that receives the operation signal indicated by the user operation from a portable terminal device by wireless communication. It is characterized by having.

  A fifth technical means of the present invention is one speaker device among the plurality of speaker devices that receives the audio signal from a source device that transmits the audio signal to the plurality of speaker devices by wireless communication. The speaker device receives a user operation and outputs the audio signal changed according to an operation signal indicated by the user operation.

  According to a sixth technical means of the present invention, in the fifth technical means, the speaker device transmits the operation signal to the source device, and is changed by the source device based on the operation signal. An audio signal for a speaker device or an audio signal processing parameter is received from the source device.

  According to a seventh technical means of the present invention, in the fifth technical means, the speaker device performs signal processing on the audio signal received from the source device with the audio signal processing parameter indicated by the operation signal, The signal processing execution notification is transmitted to the source device.

  According to an eighth technical means of the present invention, in any one of the fifth to seventh technical means, the electronic technical device has a receiving unit that receives the operation signal indicated by the user operation from a portable terminal device by wireless communication. It is a thing.

  A ninth technical means of the present invention is a source device that transmits an audio signal to a plurality of speaker devices by wireless communication, and the audio signal according to an operation signal indicated by a user operation received by the speaker device. Alternatively, the audio signal processing parameters are changed.

  According to a tenth technical means of the present invention, in the ninth technical means, the audio signal for receiving the operation signal transmitted from the speaker device and outputting the operation signal to the plurality of speaker devices based on the operation signal. Alternatively, the audio signal processing parameters are changed.

  The eleventh technical means of the present invention is characterized in that, in the ninth technical means, the audio signal processing parameters after the change transmitted from the speaker device are received on the speaker device side. .

  According to a twelfth technical means of the present invention, in any one of the ninth to eleventh technical means, the operation signal indicated by the user operation is a signal received from the mobile terminal device by wireless communication with the speaker device. It is characterized by that.

  According to the present invention, in a sound wireless transmission system that transmits sound signals from a source device to a plurality of speaker devices by wireless communication, operations for changing sound such as sound quality changing operation and content changing operation can be performed from the speaker device side. .

It is a block diagram which shows the example of 1 structure of the audio | voice radio | wireless transmission system which concerns on the 1st Embodiment of this invention. It is a schematic diagram which shows an example of apparatus arrangement | positioning in the audio | voice radio transmission system of FIG. It is a figure which shows each apparatus in the apparatus arrangement | positioning of FIG. 2A. It is a figure which shows an example of the channel of the audio | voice signal transmitted and reproduced | regenerated in the audio | voice radio | wireless transmission system of FIG. It is a figure which shows the other example of the channel of the audio | voice signal transmitted and reproduced | regenerated in the audio | voice radio transmission system of FIG. It is a figure which shows the other example of the channel of the audio | voice signal transmitted and reproduced | regenerated in the audio | voice radio transmission system of FIG. It is a sequence diagram for demonstrating an example of the sound quality change process sequence in the audio | voice radio | wireless transmission system of FIG. It is a sequence diagram for demonstrating the other example of the sound quality change process sequence in the audio | voice radio | wireless transmission system of FIG. It is a sequence diagram for demonstrating an example of the sound quality change process sequence in the audio | voice radio | wireless transmission system which concerns on the 3rd Embodiment of this invention. It is a sequence diagram for demonstrating the 1st communication system used for the communication process in the audio | voice radio | wireless transmission system which concerns on the 4th Embodiment of this invention. It is a sequence diagram for demonstrating the 2nd communication system used for the communication process in the audio | voice radio | wireless transmission system which concerns on the 4th Embodiment of this invention. It is a sequence diagram for demonstrating the 3rd communication system used for the communication process in the audio | voice radio | wireless transmission system which concerns on the 4th Embodiment of this invention. It is a figure which shows an example of the packet used for the communication process in the audio | voice radio | wireless transmission system which concerns on the 4th Embodiment of this invention. It is a figure which shows an example of the content described in each section in the packet of FIG. 8A. It is a figure which shows an example of the packet used for the instruction | indication in the 1st communication system of FIG. 7A. FIG. 9B is a diagram showing an example of an ID (command type) described in the packet of FIG. 9A and parameters defined for each ID. It is a figure which shows an example of the packet used for the instruction | indication response in the 1st communication system of FIG. 7A. FIG. 9D is a diagram illustrating an example of an ID (instruction type) described in the packet of FIG. 9C and parameters defined for each ID. It is a figure which shows an example of the packet used for the request | requirement in the 2nd communication system of FIG. 7B. FIG. 10B is a diagram showing an example of an ID (request type) described in the packet of FIG. 10A and parameters defined for each ID. It is a figure which shows an example of the packet used for the request response in the 2nd communication system of FIG. 7B. It is a figure which shows an example of the parameter prescribed | regulated for every ID (request | requirement response classification) described in the packet of FIG. 10C, and ID. It is a figure which shows an example of the packet used for the notification in the 3rd communication system of FIG. 7C. It is a figure which shows an example of the parameter prescribed | regulated for ID (notification classification) described in the packet of FIG. 11A, and ID.

  The audio wireless transmission system according to the present invention is a system including a speaker device and a source device, and can be said to be a wireless audio system, a wireless speaker system, or the like. Although this source device has a wireless communication unit for transmitting an audio signal by wireless communication, the wireless communication unit may be configured as a separate casing.

  The source device includes various audio playback devices such as a CD (Compact Disc) player, an SACD (Super Audio CD) player, a BD (Blu-ray Disc; registered trademark) player, an HDD (Hard disk drive) player, TV apparatus, PC (Personal Computer), etc. are mentioned. Here, examples of the audio playback device include a network player that receives a music file stored in a server on the network via the network and wirelessly transmits it to the speaker device. In addition, in any source device, a part of the speaker device may be incorporated (in addition, the built-in speaker device may be configured to transmit various data by wire). For example, the center speaker can be provided in the housing of the display unit of the television device, and the speakers for other channels can be arranged in a separate housing as the speaker device. Hereinafter, a voice radio transmission system according to the present invention will be described with reference to the drawings.

(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing a configuration example of a voice radio transmission system (hereinafter, this system) according to the present embodiment.

  The system includes a plurality of grouped speaker devices 2 and a source device 1 that transmits audio signals to the plurality of speaker devices 2 by wireless communication. In FIG. 1, only one of the plurality of speaker devices 2 is illustrated, but the source device 1 and the speaker device 2 may be provided in a one-to-many relationship.

  The source device 1 is a wireless transmitter including a control unit 10 that controls the entire device and a wireless communication unit 15. The control unit 10 is configured by, for example, a CPU (Central Processing Unit). By providing the wireless communication unit 15, the source device 1 is caused to function as a wireless transmitter that transmits an uncompressed audio signal (an original audio signal) or a compressed audio signal to the speaker device 2 by wireless communication. Can do. Hereinafter, an example in which an audio signal is wirelessly transmitted without compression will be described. It can be said that it is preferable that the audio signal transmitted from the source device 1 is an uncompressed signal because high-quality audio can be output from the speaker device 2.

  Further, the source device 1 of this configuration example includes an audio input unit for inputting audio content (audio signal) to be output. As an example of the voice input unit, an example in which the voice input terminal 11, the communication unit 12, and the voice input processing unit 13 are provided is given here. However, if one of the voice input terminal 11 and the communication unit 12 is provided. Good.

  As the audio input terminal 11, input terminals of various standards such as a High-Definition Multimedia Interface (HDMI; registered trademark, the same applies hereinafter) terminal can be applied. The communication unit 12 is a part for receiving audio content by communicating with the outside based on a standard such as LAN (Local Area Network), WiFi, Bluetooth, etc., regardless of wired or wireless. The communication unit 12 may be configured to receive, for example, an Internet radio broadcast. Of course, both the communication unit 12 and the wireless communication unit 15 can use the same standard, such as adopting the WiFi standard, but in that case, in order to avoid interference between reception and transmission of the audio signal, the MAC (Media Access) Control address) Different identifiers such as addresses may be used.

  The audio input processing unit 13 is a part that converts an audio signal input from the audio input terminal 11 or the communication unit 12 so as to match a processing format in the signal processing unit 14 described later. For example, an analog signal is converted into a digital signal. (Or reverse conversion thereof), a process of multiplexing signals of a plurality of channels included in the audio signal (or the reverse demultiplexing process), and the like. In addition to the audio input terminal 11 and the communication unit 12, or in place of one or both of them, the source device 1 reads out the audio content from the storage device and plays back the audio content. And an audio reproducing unit that performs the operation.

  The source device 1 further includes a signal processing unit 14 that performs predetermined signal processing on the audio signal output from the audio input processing unit 13. As predetermined signal processing in the signal processing unit 14, for example, processing of changing the sound quality according to a user operation, processing of creating a sound field, or the like for the input sound signal before transmitting the sound signal of each channel. Examples of correction processing include correction. Of course, the signal processing in the signal processing unit 14 is different from the predetermined signal processing in the signal processing unit 22 described later. The signal processing unit 14 and the signal processing unit 22 described later are often configured by a DSP (Digital Signal Processor).

  The signal processing unit 14 passes the audio signal after the signal processing to the wireless communication unit 15 and causes the wireless communication unit 15 to perform wireless transmission. Of course, such control may be performed by the control unit 10. The wireless communication unit 15 transmits the audio signal of each channel input from the signal processing unit 14 to each speaker device 2 by wireless communication without being compressed.

  Furthermore, the source device 1 of this configuration example includes an operation unit 16 that receives a user operation and passes the operation signal to the control unit 10, and a display unit 17 that displays various types of information. The operation unit 16 includes a button provided on the main body of the source device 1, a receiving unit that receives an infrared signal from a remote controller and a short-range wireless signal such as Bluetooth, and a portable terminal device 3 such as a tablet, a smartphone, or a portable information terminal. And a receiving unit that receives a control signal by wireless communication from a stationary terminal device. The communication unit 12 may be used as these receiving units. In the display unit 17, information related to the operation in the operation unit 16 (for example, information such as content and input source to be selected, volume and sound quality to be changed) and operation results in the operation unit 16 are displayed. Further, the function of the source device 1 can be mounted on the terminal device. In this case, the receiving unit as described above may not be provided, and the operation unit 16 and the display unit 17 may be configured with a touch panel. .

  The control unit 10 controls the speaker device 2 from the source device 1 side by transmitting the control signal corresponding to the operation signal to the speaker device 2 side, for example, by superimposing the control signal on the wireless carrier wave by the wireless communication unit 15. Can do.

  On the other hand, the speaker device 2 is a wireless receiver including a control unit 20 that controls the entire device and a wireless communication unit 21. The control unit 20 is composed of, for example, a CPU. By providing the wireless communication unit 21, the speaker device 2 can function as a wireless receiver that receives an audio signal transmitted from the source device 1 by wireless communication. The wireless communication between the wireless communication unit 15 and the wireless communication unit 21 is preferably bidirectional communication, and various parameters are also transmitted and received in addition to control data (commands) such as audio signal data and the above control signals. It is preferred that

  Here, an example is given of wireless communication between the wireless communication unit 15 and the wireless communication unit 21. An example of this wireless communication is wireless communication based on the WiSA (Wireless Speaker and Audio) standard. In this case, as the wireless communication unit 15 and the wireless communication unit 21 on the speaker device 2 side, modules on the transmission side and the reception side that are being standardized by WiSA Association can be applied, respectively. The WiSA standard is one of the standards for wirelessly transmitting audio signals by non-compressed PCM (pulse code modulation). Both the source device and the speaker device have wireless communication devices, and the uncompressed audio is transmitted from the source device to the speaker device using uncompressed PCM using a communication protocol compliant with WiFi. Further, parameters such as specification information of the speaker device can be transmitted from the speaker device to the source device.

  One specification (mounting method) using the WiSA standard will be described by applying to this configuration example. The source device 1 incorporates an equalizer in the signal processing unit 14, and performs frequency equalization processing (or room equalization processing) in the source device 1 to adjust and correct the sound characteristics. Such correction is preferably performed so as to match the speaker characteristics of each speaker device 2 (for example, which channel the speaker is for and what the frequency characteristics are). In order to match the speaker characteristics, the speaker characteristics may be stored in the source device 1 in advance, but the source device 1 makes an inquiry to each speaker device 2 or a separately provided server device. May be acquired.

  After the correction, the source device 1 wirelessly transmits to each speaker device 2 the audio signal of each channel after the equalizing process (this becomes the original sound) as uncompressed audio data. The speaker device 2 outputs the received audio signal without being processed. Alternatively, the data is multiplexed and wirelessly transmitted to all speaker devices 2 by time division or the like as common data (audio signal data for all channels). That is, the wireless transmission may be performed as broadcast data or multicast data as common data without being divided. In this case, the speaker device 2 side extracts the data of its own channel from the received data for all channels.

  In the WiSA standard, another specification (mounting method) can be adopted. In this specification, the audio signals of all channels to be used are wirelessly transmitted in a broadcast or multicast manner as described above, with no compression and no correction (as the original sound). The speaker device 2 side extracts the data of its own channel from the received data for all channels. In such a transmission method, since the amount of channel selection and correction (including frequency equalization processing or room equalization processing) is arbitrarily determined on the speaker device 2 side, setting with a higher degree of freedom is possible. Such a setting can be executed by an instruction specifying a parameter from the source device 1 side. The speaker device 2 includes an equalizer that performs frequency equalization processing or room equalization processing in a signal processing unit 22 described later, and performs equalization processing (sound quality adjustment) according to the received parameters on the received audio signal. The sound indicated by the processed sound signal is output.

  It is also possible to apply both of the mounting methods so as to correct the sound at the source device 1 and to instruct the speaker device 2 to specify the parameters for each speaker device 2. Further, even when the WiSA standard module is not adopted, the wireless communication unit 15 may multiplex the audio signals of the respective channels and then wirelessly transmit them to all the speaker devices 2, or may wirelessly transmit the wireless signals of the speaker devices 2. Only the audio signal of the target channel may be wirelessly communicated with the communication unit 21 on a one-to-one basis.

  The speaker device 2 of this configuration example includes a speaker unit 25 and also includes a signal processing unit 22, a volume adjustment unit 23, and an amplifier unit (AMP) 24. The signal processing unit 22 performs predetermined signal processing such as various filter processes on the audio signal received by the wireless communication unit 21 and outputs the processed signal to the volume adjustment unit 23. Further, the signal processing unit 22 has a D / A converter (DAC) for converting the audio signal from a digital signal to an analog signal before or after the predetermined signal processing. The DAC may be provided on the volume adjustment unit 23 side.

  Here, the parameters required for the predetermined signal processing are stored in a memory or the like inside the signal processing unit 22 (or the control unit 20), and are read out as necessary. Further, the control unit 20 or the signal processing unit 22 rewrites the above parameters based on a control signal corresponding to the operation signal from the source device 1 and / or based on a user operation received by the operation unit 26 described later. May be configured to be possible.

  The volume adjusting unit 23 passes the input audio signal to the AMP 24 and adjusts the volume of the audio output from the speaker unit 25 by adjusting the AMP 24. The AMP 24 amplifies the audio signal output from the signal processing unit 22 via the volume adjustment unit 23 and outputs the amplified audio signal to the speaker unit 25.

  The speaker device 2 includes an operation unit 26 that receives a user operation and passes the operation signal to the control unit 20. Examples of the operation unit 26 include a button provided on the main body of the speaker device 2 and a communication unit 27. The communication unit 27 receives a control signal by wireless communication from a receiving unit that receives an infrared signal from a remote controller or a short-range wireless signal such as Bluetooth, a mobile terminal device 3 such as a tablet, a smartphone, or a personal digital assistant, or a stationary terminal device. This refers to the receiving unit that receives Note that it is preferable that the device that transmits the signal received by the communication unit 27 is shared with the device that transmits the signal received by the receiving unit described as an example of the operation unit 16 on the source device 1 side. .

  Moreover, it is preferable that the speaker device 2 is also provided with a display unit that displays various types of information in the same manner as the display unit 17. As a result, it is possible to display information related to operations on the operation unit 26 (for example, information such as content and input source to be selected, volume and sound quality to be changed), and operation results on the operation unit 26. .

  As a main feature of the present invention, the speaker device 2 receives a user operation through the operation unit 26 and outputs an audio signal that is changed according to an operation signal indicated by the user operation. The speaker device 2 includes a receiving unit exemplified by the communication unit 27, and the receiving unit preferably receives the operation signal indicated by the user operation from the mobile terminal device 3 by wireless communication. Thereby, since a user can operate by hand, operativity can be improved. Of course, the user operation may be received by another operation unit 26 such as an operation button provided in the speaker device 2.

  Since the audio signal to be changed is an audio signal transmitted to a plurality of speaker devices included in the present system, the change described above is a speaker that forms the same sound field together with the speaker device 2 that has received a user operation. It will be reflected to the device group. In particular, when all the speaker devices 2 in this system are grouped into a plurality of speaker groups, the above changes are also reflected in the speaker device groups that form the same sound field (in the same group). It will be.

  In the present invention, the speaker device 2 may output the changed audio signal. Therefore, this change may be executed on the source device 1 side, may be executed on the speaker device 2 side, or may be executed in cooperation with each other. Also, on the source device 1 side, either the audio signal or the audio signal processing parameter is finally changed according to the operation signal.

  Among such changing methods, in the present embodiment, the source device 1 performs this change mainly. Therefore, the speaker device 2 transmits the operation signal to the source device 1. Then, the source device 1 receives the operation signal from the speaker device 2, changes the sound signal or the sound signal processing parameter to be output to the plurality of speaker devices 2 based on the operation signal, and each speaker device 2 to send. This transmission is performed by the wireless communication unit 15, but the audio signal processing parameter may be transmitted by another route.

  The transmission of the operation signal will be specifically described. In the present embodiment, the user operation is a user operation for operating the source device 1 and is hereinafter referred to as “source device operation” for distinction. The operation unit 26 receives the source device operation, and the control unit 20 interprets an operation signal indicating the operation of the source device, and converts the operation signal into an operation signal to be passed to the source device 1 as it is or as necessary. To the source device 1. This transmission is preferably carried out by superimposing it on a wireless carrier wave using the wireless communication unit 21, but a communication unit that performs wired or wireless communication is separately provided in the speaker device 2 and the source device 1, and the communication unit You may send it with As the communication unit, the communication unit 27 or the communication unit 12 can be used. However, it can be said that the speaker device 2 preferably transmits the operation signal to the source device 1 by wireless communication for reasons such as ease of arrangement of the speaker device 2.

  The source device 1 receives the operation signal indicating the source device operation transmitted from the speaker device 2. Based on the received operation signal, the signal processing unit 14 of the source device 1 outputs the signal to the speaker group to which the speaker device 2 that is the transmission source of the operation signal among the plurality of speaker devices 2 in the system belongs. Therefore, the sound signal or the sound signal processing parameter is changed. Of course, when there is only one speaker group, it is possible to output an audio signal or an audio signal processing parameter for output to all speaker devices 2 without determining the transmission source. Hereinafter, an example of basically grouping into speaker groups will be given. However, in the case of not grouping, determination of a transmission source or the like can be omitted in this way.

  The audio signal processing parameter refers to a parameter used for predetermined signal processing in the signal processing unit 22, and at least one of the plurality of parameters may be changed. The wireless communication unit 15 of the source device 1 transmits the audio signal or the audio signal processing parameter thus changed to the speaker group by wireless communication. For the speaker devices 2 belonging to other speaker groups, the audio signal and the audio signal processing parameter are not changed depending on the operation signal.

  The wireless communication unit 21 of the speaker device 2 belonging to the speaker group receives the sound signal or the sound signal processing parameter for the speaker group thus changed from the source device 1 by wireless communication. In the speaker device 2, the sound indicated by the received sound signal is output from the speaker unit 25.

  When adopting a configuration in which what is changed in the source device 1 is an audio signal, the speaker device 2 may output the audio signal as it is. On the other hand, when adopting a configuration in which the changed one is an audio signal processing parameter, the speaker device 2 uses the audio signal processing parameter to store the parameter stored in the memory in the signal processing unit 22 or the control unit 20. And using the parameters after rewriting, predetermined signal processing may be performed on the audio signal received thereafter (or simultaneously). As a result, the same audio output as when the audio signal is changed is possible.

  A more specific example of this system will be described with reference to FIGS. 2A is a schematic diagram showing an example of device arrangement in the system, FIG. 2B is a diagram showing devices in the apparatus arrangement of FIG. 2A, and FIGS. 3A to 3C are examples of channels of audio signals transmitted and reproduced in the system FIG.

  In the system illustrated in FIGS. 2A and 2B, six speaker devices SP1 to SP6 are installed in a room (audio room) where the source device 1 is installed, and two speaker devices SP7 and SP8 are installed in a remote room (living room). is set up. SP1 to SP8 are all speaker devices 2, but their speaker characteristics are different. Of course, speaker devices having the same speaker characteristics may also be included. In this example, each of the speaker devices SP1, SP2, SP3, SP4, SP5, SP6, SP7, SP8 is center (C), front left (L), front right (R), surround left (LS), It is assumed that the speaker device is for subwoofer (LFE), surround right (RS), left (L), and right (R) channels.

  The speaker devices SP1 to SP6 are speaker groups (hereinafter also simply referred to as “groups”) No. 0 (2a), speaker devices SP7 and SP8 are group Nos. 1 (2b). By storing the classified information in a memory or the like in the control unit 10 (or the signal processing unit 14 or the like) of the source device 1, the source device 1 belongs to which group 2a or 2b a certain speaker device belongs. Can be recognized. Therefore, even when the source device 1 receives the operation signal indicating the source device operation, it is possible to determine which group the speaker device 2 belongs to only by including information specific to the speaker device 2 that has transmitted the operation signal. Can be identified. The classified information may be stored as a channel map (channel map table), for example. Only examples divided into two groups are given, but the same idea can be applied to three or more groups.

  In this system, a case where the source device 1 transmits common data (audio signal data for all channels) to all of the eight speaker devices SP1 to SP8 as illustrated in FIG. 3A will be described. In this case, the speaker devices SP1, SP2, SP3, SP4, SP5, and SP6 belonging to the group 2a extract the audio signals of the channels C, L, R, LS, LFE, and RS, respectively, and output the audio to the group 2b. The speaker devices SP7 and SP8 to which they belong extract the audio signals of the channels LS, L, C, and channels C, R, and RS, respectively, and generate the left (La) and right (Ra) audio signals from these audio signals ( Downmix) and output.

  Next, as illustrated in FIG. 3B, the source device 1 has common data of the first content audio signal for the six speaker devices SP1 to SP6 and the second content audio signal for the two speaker devices SP7 and SP8. A case of transmitting (audio signal data for all channels of two contents) will be described. For simultaneous distribution of such two contents, if there are two channels for the channel of the source device 1 for 5.1ch and for 2ch (there may be two for channels of 5.1ch or more), that is, This is possible if the processing capability of the control unit 10, the audio input processing unit 13, and the signal processing unit 14 and the processing capability (communication bandwidth, etc.) of the wireless communication unit 15 are compatible with the distribution of two contents.

  In this case, the speaker devices SP1, SP2, SP3, SP4, SP5 and SP6 belonging to the group 2a respectively extract the audio signals of the channels C, L, R, LS, LFE and RS of the first content and output the audio. The speaker devices SP7 and SP8 belonging to the group 2b extract the audio signals of the second content channels LS, L, and C and the second content channels C, R, and RS, respectively, and use the left contents of the second content from the audio signals. (La) and right (Ra) audio signals are generated (downmixed) and output.

  As illustrated in FIG. 3C, the source device 1 has an audio signal of the first content for the six speaker devices SP1 to SP6, and a left content (La) and a right content for the second content for the two speaker devices SP7 and SP8 ( The case where the common data of the audio signal of the channel Ra) is transmitted will be described. In this case, first, with respect to the second content, the above-described downmixing is performed on the source device 1 side to generate audio signals of the channels La and Ra of the second content. The audio output in the group 2a is the same as in FIG. 3B. The speaker devices SP7 and SP8 belonging to the group 2b extract the audio signals of the channels La and Ra of the second content, respectively, and output the audio.

In the example of FIGS. 3B and 3C, an example in which two contents are multiplexed and distributed has been described. However, these contents are not limited to those received by the source device 1 from one source. As described above, the source device 1 may be configured to be able to acquire content from both the communication unit 12 and the audio input terminal 11, or configured to be able to acquire content from two types of sources by the communication unit 12. May be. In any case, in order for the source device 1 to deliver two or more contents, not only the ability to multiplex channels in the wireless communication unit 15 but also the contents in the audio input processing unit 13 are multiplexed. Ability (that is, the ability to process multiple contents) is required.
Unlike FIGS. 3A to 3C, the source device 1 and each speaker device 2 can communicate one-on-one.

  The source device operation preferably includes an operation for changing the characteristic (feature) of the sound indicated by the audio signal output from the source device 1, that is, an operation for changing the sound quality. This will be described with reference to FIGS. 4 and 5 are sequence diagrams for explaining an example of a sound quality change processing procedure in the present system. Here, the change in sound quality includes an operation for changing the frequency characteristics and an operation for changing other sound characteristics. The change of the frequency characteristic can also be realized by changing a plurality of prepared music modes (also called a sound quality mode or a sound mode).

  Based on FIG. 4, an example in which audio signal correction (including correction other than town mix) is performed on the speaker device 2 side as shown in FIG. 3A and a sound quality changing operation is received by the speaker device SP8 will be described. First, a sound quality changing application (hereinafter referred to as an application) installed in the mobile terminal device 3 by the user is activated (step S1). This application is activated and wirelessly communicates with a communication destination set in advance or set by the user at that time via the communication unit 27. In this wireless communication, first, the application requests the sound quality setting data from the speaker device SP8 (step S2).

  Note that Bluetooth is not a problem because it is a one-to-one wireless communication. However, when infrared communication or the like is employed, this request is received by both speaker devices SP7 and SP8 installed in the same room, and in step S3 described later. It is conceivable that the processing is performed on both sides. In this case, for example, when the same instruction is received from the speaker devices in the same group during the processes of steps S3 and S4 described later, the instruction having the youngest ID is adopted and instructions for other IDs are adopted. Mediation, such as ignoring. Further, for example, by providing the communication unit 27 for only one speaker device group belonging to the same group as a master (or so as not to ignore the operation of the source device), such arbitration and the above-described pre-setting are not performed. It will be enough.

  When the communication unit 27 receives this request, the speaker device SP8 instructs the source device 1 to send sound quality setting data (audio signal processing parameters) via the wireless communication unit 21 (step S3). Here, the instruction is given with its own unique information added to the source device 1. The source device 1 determines from the unique information that the speaker device SP8 is the transmission source, and returns the sound quality setting data for the group 2b to which the transmission source belongs by the wireless communication unit 15 (step S4). The reason why the sound quality setting data is acquired from the source device 1 in this way is that the sound quality setting data of each group is managed by the source device 1 in this processing example.

  Upon receiving the response, the speaker device SP8 transmits the sound quality setting data to the mobile terminal device 3 (step S5), and the app recognizes the sound quality setting data and displays the changeable sound quality setting data on a GUI (Graphical User Interface) image (not shown). ) And a sound quality change operation is received from the user (step S6). Examples of the sound quality setting data that can be changed include frequency characteristics and the sound balance of each channel in the group. Thereafter, the application requests the speaker device SP8 to change the sound quality (step S7), and the speaker device SP8 transmits a sound quality change instruction with its own unique information added to the source device 1 (step S8).

  The source device 1 determines from the unique information that the speaker device SP8 is the transmission source (or determination at the time of steps S3 and S4), and updates the sound quality setting data for the group 2b to which the transmission source belongs (step S9). ). In this processing example, since the audio signal is corrected on the speaker device 2 side, the source device 1 transmits a sound quality change request to the speaker devices SP7 and SP8 in step S9 (steps S10 and S11). ). The sound quality change request may include a parameter after change related to the sound quality operated by the user and an update request for the parameter. Accordingly, the sound quality is changed by updating the predetermined signal processing parameters for the signal processing unit 22 in the speaker devices SP7 and SP8.

  Finally, the source device 1 transmits a sound quality change completion notification to the speaker device SP8 (step S12), and the speaker device SP8 receives the notification and transmits a sound quality change completion notification to the mobile terminal device 3 (step S13). The application displays the notification (step S14). Note that a sound quality change request is not sent for the speaker devices SP1 to SP6 that do not belong to the group 2b. As a result, the sound quality is changed only in the speaker device group of the group 2b, the sound quality of the speaker device group of the group 2a is not changed, and there is no sense of incongruity such as a change in volume even if a listener in a room other than the operated room is not operated. I can continue listening.

  Based on FIG. 5, in the processing example of FIG. 4, there are a group signal and a speaker device individual parameter as audio signal processing parameters, and the group (whole) audio signal processing parameters are managed by the source device 1 and individually. An example in which the audio signal processing parameters are individually managed by each of the speaker devices SP7 and SP8 will be described.

  First, the same processing as steps S1 to S3 is performed (steps S21 to S23). Next, the source device 1 requests individual sound quality setting data (audio signal processing parameters) from the speaker devices SP8 and SP7 belonging to the group 2b to which the transmission source belongs (steps S24 and S25). In response to the request, the speaker devices SP8 and SP7 return individual sound quality setting data (steps S26 and S27). Then, as a response to step S23, the source device 1 returns the sound quality setting data for the entire group 2b and the individual sound quality setting data for the speaker devices SP7 and SP8 to the speaker device SP8 (step S28).

  Upon receiving the response, the speaker device SP8 transmits the sound quality setting data to the mobile terminal device 3 (step S29), the app recognizes it, and displays the changeable sound quality setting data as a GUI image (not shown). And a sound quality changing operation is received from the user (step S30). Examples of the sound quality setting data that can be changed include frequency characteristics in the group, the balance of sound of each channel in the group, frequency characteristics of individual speaker devices, and the like. Thereafter, the application requests the speaker device SP8 to change the sound quality (step S31), and the speaker device SP8 transmits a sound quality change instruction with its own unique information added to the source device 1 (step S32).

  The source device 1 determines from the specific information that the speaker device SP8 is the transmission source (or uses the result determined at the time of steps S23 and S24), and updates the sound quality setting data for the group 2b to which the transmission source belongs. (Step S33). In the present processing example, as in the processing example of FIG. 4, the audio signal is corrected on the speaker device 2 side. Therefore, in step S33, the source device 1 makes a sound quality change request to the speaker devices SP7 and SP8. Is transmitted (steps S34 and S35). The sound quality change request may include a parameter after change related to the sound quality operated by the user and an update request for the parameter. Accordingly, the sound quality is changed by updating the predetermined signal processing parameters for the signal processing unit 22 in the speaker devices SP7 and SP8.

  Finally, processing similar to steps S12 to S14 in FIG. 4 is executed (steps S36 to S38). Even in the processing example of FIG. 5, since the sound quality change request is not sent for the speaker devices SP1 to SP6 that do not belong to the group 2b, the listener does not feel uncomfortable similarly to the processing example of FIG. Further, as an alternative process of the process example of FIG. 5, the sound quality change for the entire group (for example, the sound mode change) is directly instructed by the mobile terminal device 3 to the source device 1, and the individual sound quality change is performed by the process of FIG. An example may be configured to apply.

  As described above, in the system of FIG. 2A, a speaker group is constructed for each room, and the same content is listened to in a plurality of rooms. The operation can be performed, and the operation does not affect the sound output from the speaker group in another room. That is, in this system, the sound quality can be easily changed for each room. Although a room at home has been taken as an example, the present invention is not limited to this, and processing for each installation location of a speaker group (speaker system) is possible. For example, it is also possible to output sound having different characteristics for each private room as different speaker groups for each private room in the restaurant. Even when the function of the source device 1 is installed in a terminal device such as the portable terminal device 3, it is possible to carry the source device 1, go to the speaker group installation location, and change only the sound quality of the installation location. .

  As in this example, in this system, an operation for changing sound such as a sound quality changing operation can be performed from the speaker device side, and user convenience can be improved. In particular, when a plurality of speaker devices 2 included in this system are divided into a plurality of groups and audio signals are reproduced for each group, the sound quality can be changed individually for each group by an operation on the speaker device 2 side. It becomes. In other words, such a change in sound quality is particularly performed on an audio signal transmitted from the source device 1 for a plurality of channels, for example, an audio signal that has been multiplexed and transmitted on a broadcast or multicast basis. It will be beneficial.

  Although the present embodiment has been described with reference to the configuration example of FIG. 1, the present system is not limited to this, and for example, the following application examples can also be applied. For example, both the operation buttons for all speaker devices in the system and the operation buttons for all speaker devices belonging to the group are displayed on the GUI image of the application as described above of the mobile terminal device 3 (or as operation buttons for each speaker device). By providing this, the user can select and operate the change target.

Further, the description has been made on the assumption that one speaker device includes one speaker unit as the speaker unit 25, but one speaker device (including one wireless communication unit 21 inside) has a plurality of speaker units arranged. Such a speaker array device may be a speaker device having a plurality of speaker units such as three speaker units (tweeter, midrange, woofer) for high sound range, medium sound range, and low sound range. May be. Further, in one speaker device, the speaker unit 25 (or the AMP 24 and the speaker unit 25) may be configured as a separate housing from other parts. In this case, the operation unit 26 is attached to the speaker unit 25 side. It can also be configured to. When these configurations are adopted, the casings may basically be connected by wire.
Of course, these application examples can be similarly applied to other embodiments described later.

(Second Embodiment)
The second embodiment of the present invention will be described focusing on the differences from the first embodiment, but various examples of the first embodiment can be applied.

  The source device operation in the present embodiment includes any one of an operation for selecting content to be output as an audio signal from the source device 1 and an operation for changing the reproduction state of the content. That is, in the present embodiment, the speaker device 2 can accept an operation related to the content as the source device operation. Of course, the speaker device 2 may be configured to accept the operation of changing the sound quality described in the first embodiment. Further, the following example can be similarly applied to an operation for changing a content reproduction state (reproduction, stop, pause, fast forward, fast reverse, etc.).

  An example in which two contents are distributed from the source device 1 as shown in FIGS. 3B and 3C and the content switching operation is received by the speaker device SP8 will be described. 4 is basically replaced with “content change (selection)” and “sound quality setting data” is “content”. "Is replaced with" ".

  Briefly, the content change application is started in step S1, the application acquires information about the current content and reproducible content as in steps S2 to S5, and the content to be reproduced by the user is changed in step S9. Perform the operation. This information includes the content name, but when considering the switching of the content source, the content server name (source name) may be included. Then, the application requests the speaker device SP8 to change the content as in steps S7 and S8, and the source device 1 changes the content in step S9. The change notification is the same as steps S12 to S14 except for the notification content.

  It supplements about the processing at the time of change of the contents for reproduction. The control unit 10 of the source device 1 sends an instruction to switch the content to a new one for playback of the speaker devices SP7 and SP8 belonging to the group 2b, and the audio input processing unit 13 currently outputs the instruction. The content source is instructed to switch the content via the audio input terminal 11 or the communication unit 12. In response to this instruction, the content after switching is reproduced and distributed from the wireless communication unit 15 via the audio input processing unit 13 and the signal processing unit 14. In the case of FIG. 3B, distribution is performed without downmixing, and in the case of FIG. 3C, distribution is performed after downmixing.

  The speaker devices SP7 and SP8 receive the distributed common data. In the case of FIG. 3B, the audio data for itself is extracted and then downmixed and output. In the case of FIG. 3C, the downmix for itself is output. Extracted audio data and output it. On the other hand, in the speaker devices SP1 to SP6, the content that has been conventionally reproduced is extracted and reproduced as it is. As a result, content switching occurs only in the group of speaker devices in group 2b, and the group of speaker devices in group 2a continues to output conventional content. Therefore, a listener in a room other than the operated room is not operating. You can continue listening without feeling uncomfortable.

  Here, it supplements regarding the audio | voice output by speaker apparatus SP7, SP8. Regardless of whether or not the content switching is caused by the operation of the source device, when a plurality of contents are continuously reproduced, there is a scene where the number of channels is switched between the contents. In this scene, since the sound quality changes in response to the change in the number of channels, the audio signal to be transmitted may be changed according to the speaker device 2 by correction processing such as downmixing even in the case of one-to-one communication. This correction process may be executed in accordance with the number of channels obtained by the source device 1.

  On the other hand, when distributing in a broadband or multicast manner, the channel extracted by the speaker device 2 itself is fixed so that the sound of a specific channel is extracted and output as it is on the speaker device 2 side. You can also. However, in order to cope with a change in sound quality, it is desirable in this case as well to generate a sound signal corresponding to the correction by downmixing or the like on the source device 1 side as necessary.

  As another method for dealing with a change in sound quality due to a change in the number of channels in the case of broadband or multicast distribution, the channel extracted by the speaker device 2 can be fixed. Such variable processing is particularly useful when correction processing such as downmixing is performed on the speaker device 2 side as in the speaker devices SP7 and SP8 to which the example of FIG. 3B is applied.

  The variable processing not only obtains information on the number of channels at the source device 1, but also transmits information on the number of channels to the speaker device, etc. (or information indicating the channel to be extracted) after switching. May be notified to the speaker devices SP7 and SP8 before the reproduction is started. As a result, appropriate sound can be output.

  Also, the gap (noise) sound at the switching of the content can be eliminated by temporarily muting the audio output at the switching of the content. For example, first, a content switching notification is wirelessly transmitted to the speaker devices SP7 and SP8 before the start of wireless transmission of new content (preferably immediately after receiving a content change instruction), and the speaker devices SP7 and SP8 are muted. Execute. Next, the source device 1 starts wireless transmission of new content, and then notifies the completion of content switching, and the speaker devices SP7 and SP8 may cancel mute. Thereby, not only an appropriate sound can be output, but also the output of a gap sound can be prevented.

  Further, when a content switching operation is performed in a state where only one content is output as shown in FIG. 3A, the source device 1 acquires new content and uses the new channel slot in FIGS. 3B and 3C. For example, it may be distributed in addition to the common data.

  In addition, when the source device 1 is configured to be able to acquire content from two or more types of sources, skipping of content is performed by skipping forward and backward for the first and last content of one source, respectively. It may be possible to return to the end of the same source, but to switch to the first content of the previous and subsequent sources. The former may be adopted, and the latter operation may be separately defined as a source switching operation belonging to the content selection operation.

  As described above, in the system of FIG. 2A, a speaker group is constructed for each room, and the same content is listened to in a plurality of rooms. The device can be operated, and the operation does not affect the sound output from the speaker group in another room. That is, in this system, content can be easily changed for each installation location of the speaker system, such as for each room.

(Third embodiment)
A third embodiment of the present invention will be described with reference to FIG. FIG. 6 is a sequence diagram for explaining an example of a sound quality change processing procedure in the voice radio transmission system according to the present embodiment. Although this embodiment will be described focusing on differences from the first embodiment, various examples of the first embodiment can be applied.

  In the present embodiment, the speaker device 2 is mainly used to change the audio signal by changing its own audio signal processing parameters, and is stored in the source device 1 on the source device 1 side in accordance with the change. Change the audio signal processing parameters. As a result, the source device 1 can manage at least the audio signal processing parameters of the entire system (and the entire group) as the entire system.

  Specifically, the speaker device 2 uses the audio signal processing parameters indicated by the operation signal, the signal processing unit 22 performs signal processing on the audio signal received from the source device 1, and the signal is sent to the source device 1. Send process execution notification. This operation signal is an operation signal indicated by a user operation received by the operation unit 26 of the speaker device 2. In the present embodiment, this user operation cannot be called a source device operation. The execution notification may include the changed audio signal processing parameter. The source device 1 receives the updated audio signal processing parameter transmitted from the speaker device 2 and updates it on the speaker device 2 side.

  Based on FIG. 6, the example which receives sound quality change operation in the group 2b of speaker apparatus SP8 and SP7 is demonstrated. In the present embodiment, not only audio signal correction (including correction other than the town mix) is performed on the speaker device 2 side as shown in FIG. 3A, but also parameters for the correction are changed. .

  First, processing similar to steps S1 and S2 in FIG. 4 is executed (steps S41 and S42). When the communication device 27 receives the sound quality setting data (audio signal processing parameter) request, the speaker device SP8 stores the sound quality setting data stored in itself (individually or individually and individually and individually related to the entire group). Is returned to the portable terminal device 3 (step S43). Similarly, the application requests and acquires sound quality setting data from the speaker device SP7 (steps S44 and S45). Note that in the case of one-to-one wireless communication such as Bluetooth, the application needs to switch communication destinations.

  The application displays the changeable sound quality setting data sent in steps S43 and S45 as a GUI image (not shown), and accepts a sound quality change operation from the user (step S46). Examples of the sound quality setting data that can be changed include the frequency characteristics of the speaker devices SP7 and SP8 and the sound balance of each channel in the group 2b. After that, the application requests the speaker devices SP8 and SP7 to change the sound quality (steps S47 and S48).

  Thereafter, a notification (in other words, an instruction to update the sound quality setting data) that the speaker devices SP8 and SP7 have forcibly changed the sound quality with the unique information added to the source device 1 is sent via the wireless communication unit 21. To the source device 1 (steps S49 and S50). The source device 1 determines from the specific information that the speaker devices SP8 and SP7 are the transmission sources, and updates the sound quality setting data for the transmission sources (step S51). The reason why the sound quality setting data is updated by the source device 1 in this way is that the sound quality setting data of each group is managed by the source device 1 in this processing example. Note that the sound quality of the speaker devices SP1 to SP6 that have not been operated is not changed. As a result, the sound quality is changed only for the speaker device group that is the target of operation, and there is no change in the sound quality of the speaker device group that is not the target of operation. I can continue. Instead of steps S47 to S50, the application of the mobile terminal device 3 can directly communicate with the communication unit 12 of the source device 1 to request the update of the sound quality setting data.

(Fourth embodiment)
As a fourth embodiment of the present invention, an example of communication control between a speaker device and a source device applicable to the first to third embodiments will be described with reference to FIGS. 7A to 11B. FIG. 7A, FIG. 7B, and FIG. 7C are sequence diagrams for explaining the first, second, and third communication methods used for communication processing in the voice radio transmission system according to the present embodiment, respectively. FIG. 8A is a diagram illustrating an example of a packet used for communication processing in the voice radio transmission system according to the present embodiment, and FIG. 8B is a diagram illustrating an example of contents described in each section of the packet in FIG. 8A.

  The minimum communication unit of signals related to control between the source device 1 (wireless transmitter) and the speaker device 2 (wireless receiver) includes the following three types (types) of communication methods, and a series of communication procedures ( Sequence) is a combination of these types. As described above, the audio signal is transmitted by wireless communication. However, this signal may be transmitted by wire.

  As a first communication method, when the wireless receiver is operated, the wireless receiver issues an instruction (Command), thereby requesting control from the wireless transmitter (step S71). In response to this instruction, the wireless transmitter returns an instruction response (Command Response) (step S72). As the second communication method, information is requested by issuing a request from the wireless transmitter to the wireless receiver (step S73). In response to this request, the wireless receiver returns a request response (Request Response) (step S74). As a third communication method, the wireless transmitter issues a notification (Report) to the wireless receiver to notify the state change (step S75).

  As illustrated in FIG. 8A, the communication data format (packet) 41 used in these communication methods is a packet type (a type indicating which type of packet in steps S71 to S75), a packet ID, a self- The address, the address, the parameter length, the parameter, and a cyclic redundancy check value (CRC value) are included. Although the length and description of each section are not particularly described, they are as illustrated in Table 42 of FIG. 8B. Of course, not only the length and description of the packet, but also the parameter length and parameter description method for each packet type to be described later with reference to FIGS. 9A to 11B are not limited to those illustrated.

  The first communication method will be described. FIG. 9A is a diagram showing an example of a packet used for an instruction in the first communication method of FIG. 7A, and FIG. 9B is an example of an ID (command type) described in the packet of FIG. 9A and a parameter defined for each ID. FIG. 9C is a diagram illustrating an example of a packet used for an instruction response in the first communication method of FIG. 7A. FIG. 9D is defined for each ID (instruction type) and ID described in the packet of FIG. 9C. It is a figure which shows an example of a parameter.

  As shown in FIG. 9A, the instruction packet 43 used in step S71 describes “00h” corresponding to the instruction in the packet type. The packet 43 is given an ID that means “description” in the table 44 of FIG. 9B, and a parameter (additional parameter) is added if necessary. For example, for the sound quality setting data sending instruction (steps S3 and S23) in the processing examples of FIGS. 4 and 5, an ID (not shown) may be set. Further, the source device 1 can recognize that the instruction is from the speaker device SP8 by its own address. In addition, regarding the sound quality change instruction (steps S8 and S32) in the processing examples of FIGS. 4 and 5, if the sound mode is changed, the ID is “0007” and the additional parameter is changed (for example, in the standard mode). If there is, “1”) is added. If the frequency is changed, the number of stations and four types of parameters are added with the ID “0008” as illustrated as additional parameters. Further, the notification (steps S49 and S50) in the processing example of FIG. 6 corresponds to a sound quality setting data update instruction and may be processed in the same manner.

  In the content switching instruction of the processing example of the second embodiment, the ID is “0004” and a value (not shown) indicating the previous skip (or subsequent skip) is added as an additional parameter. For switching the source input to the source device 1 described as an application, an instruction for selecting a sound source with ID “0003” can be used.

  As shown in FIG. 9C, the instruction response packet 45 used in step S72 describes “01h” corresponding to the instruction response in the packet type. The packet 45 is given an ID indicating that it is described as “description” in the table 46 of FIG. 9D, and a parameter (additional parameter) is added as necessary. This ID is the same as the ID at the time of instruction. For example, the sound quality setting data sending (steps S4 and S28), which is a response to the sound quality setting data sending instruction (steps S3 and S23) in the processing examples of FIGS. An ID may be set, and sound quality setting data may be included as an additional parameter. As this description method, for example, the description method similar to the IDs “0007” and “0008” in Table 44 can be adopted. Also, responses (steps S12 and S36) to the sound quality change instruction (steps S8 and S32) in the processing examples of FIGS. 4 and 5 and responses (steps S49 and S50) of the processing example in FIG. 6 (not shown in FIG. 6). "0007" or "0008", an instruction execution result (including information indicating that reservation is made when a sound quality change is reserved) is added as an additional parameter.

  In addition, as an instruction response to the content switching instruction in the processing example of the second embodiment, the ID is “0004”, and an instruction execution result and a value (not shown) indicating the designation operation are added as additional parameters. Become. The value indicating the designation operation may be a value indicating that if, for example, the content is skipped before.

  The second communication method will be described. 10A is a diagram illustrating an example of a packet used for a request in the second communication method of FIG. 7B, and FIG. 10B is an example of an ID (request type) described in the packet of FIG. 10A and a parameter defined for each ID. FIG. 10C is a diagram showing an example of a packet used for a request response in the second communication method of FIG. 7B. FIG. 10D is defined for each ID (request response type) and ID described in the packet of FIG. 10C. It is a figure which shows an example of a parameter.

  As shown in FIG. 10A, the request packet 51 used in step S73 describes “02h” corresponding to the request in the packet type. The packet 51 is given an ID that means “description” in the table 52 of FIG. 10B, and a parameter (additional parameter) is added as necessary. For example, regarding the sound quality change request (steps S10, S11, S34, and S35) in the processing examples of FIGS. 4 and 5, if the frequency is changed, ID “0004” and the number of stations and 4 are exemplified as an additional parameter. A kind of parameter is added. Although not shown in FIG. 10B, if the sound quality change is a change in the sound mode, the ID and sound mode values may be determined in the same manner as in Table 44, and such a request may be transmitted. For the individual sound quality data request (steps S24 and S25) in the processing example of FIG. 5, an ID (not shown) may be set.

  As shown in FIG. 10C, the request response packet 53 used in step S74 describes “03h” corresponding to the request response in the packet type. The packet 53 is given an ID that means “description” in the table 54 of FIG. 10D, and a parameter (additional parameter) is added if necessary. This ID is the same as the ID at the time of instruction. For example, the response to the sound quality change request (steps S10, S11, S34, S35) of FIGS. 4 and 5 and the individual sound quality setting data transmission (steps S27, S28) of FIG. Similarly to the above, the ID and the request execution result as an additional parameter may be defined.

  The third communication method will be described. FIG. 11A is a diagram illustrating an example of a packet used for notification in the third communication method of FIG. 7C, and FIG. 11B is an example of an ID (notification type) described in the packet of FIG. 11A and a parameter defined for each ID. FIG.

  As shown in FIG. 11A, the request packet 61 used in step S75 describes “04h” corresponding to notification in the packet type. The packet 61 is given an ID that means “description” in the table 62 of FIG. 11B, and a parameter (additional parameter) is added as necessary. For example, for the notification of the sound source information change as exemplified as the notification at the time of variable processing in the processing example of the second embodiment, the ID is “0000” and the value indicating the change in the information of the sound source such as the number of channels as an additional parameter. (Not shown) is added.

(Other)
The system according to each embodiment of the present invention has been described above. However, this system may not employ the technology premised on WiSA. For example, in WiSA, each speaker device is equipped with an IC (Integrated Circuit) chip that can receive an audio signal wirelessly, but a plurality of signal processing units may be provided in one speaker device.

  The parts other than the speaker unit in the source device and the speaker device illustrated in FIG. 1 include hardware such as a peripheral device such as a microprocessor (or DSP), a memory, a bus, an interface, and a remote controller, and the hardware. It can be realized with software that can be executed in A part of the hardware can be mounted as an IC / IC chip set. In that case, the software may be stored in the memory. Also, all the components of the present invention may be configured by hardware, and in that case as well, a part of the hardware can be mounted as an IC / IC chip set.

  Further, a recording medium in which a program code of software for realizing the functions in the various configuration examples described above is recorded is supplied to the source device and the speaker device, and the program code is executed by the microprocessor or DSP in each device. This also achieves the object of the present invention. In this case, the software program code itself realizes the functions of the above-described various configuration examples. Even if the program code itself or a recording medium (external recording medium or internal storage device) on which the program code is recorded is used. The present invention can be configured by the control side reading and executing the code. Examples of the external recording medium include various media such as an optical disk such as a CD-ROM or a DVD-ROM and a non-volatile semiconductor memory such as a memory card. Examples of the internal storage device include various devices such as a hard disk and a semiconductor memory. The program code can be downloaded from the Internet and executed, or received from a broadcast wave and executed.

  The audio wireless transmission system according to the present invention has been described above. As described in the processing procedure, the present invention transmits a plurality of speaker devices and audio signals to the plurality of speaker devices by wireless communication. A voice wireless transmission method in a voice wireless transmission system including a source device that performs the above-described process may be employed.

  The audio wireless transmission method includes a step in which the speaker device receives a user operation and outputs the audio signal changed according to an operation signal indicated by the user operation. Other application examples are the same as those described for the audio wireless transmission system, and the description thereof is omitted.

  In other words, the program code itself is a program for causing the computer on the source device side and the computer on the speaker device side to execute the audio wireless transmission method. That is, this program includes a reception side program for causing a computer on the speaker device side to receive a user operation and to execute the step of outputting the audio signal changed according to the operation signal indicated by the user operation. Further, the program described above is a transmission side for causing a computer on the source device side to execute a step of changing the audio signal or the audio signal processing parameter in accordance with an operation signal indicated by a user operation received by the speaker device. Includes programs. Other application examples are the same as those described for the audio wireless transmission system, and the description thereof is omitted.

DESCRIPTION OF SYMBOLS 1 ... Source device, 2, SP1, SP2, SP3, SP4, SP5, SP6, SP7, SP8 ... Speaker device, 2a, 2b ... Speaker group, 3 ... Portable terminal device, 10 ... Source device control unit, 11 ... Audio Input terminal, 12 ... communication unit of source device, 13 ... audio input processing unit, 14 ... signal processing unit of source device, 15 ... wireless communication unit of source device, 16 ... operation unit of source device, 17 ... display unit, 20 DESCRIPTION OF SYMBOLS CONTROL UNIT FOR SPEAKER EQUIPMENT, 21 WIRELESS COMMUNICATION UNIT FOR SPEAKER EQUIPMENT, 22 SIGNAL PROCESSING UNIT FOR SPEAKER EQUIPMENT, 23. Unit, 27... Communication unit of the speaker device.

Claims (12)

An audio wireless transmission system comprising a plurality of speaker devices and a source device that transmits audio signals to the plurality of speaker devices by wireless communication,
The said speaker apparatus receives a user operation, and outputs the said audio | voice signal changed according to the operation signal which this user operation shows, The audio | voice radio transmission system characterized by the above-mentioned. The speaker device transmits the operation signal to the source device,
The audio according to claim 1, wherein the source device changes an audio signal or an audio signal processing parameter to be output to the plurality of speaker devices based on the operation signal received from the speaker device. Wireless transmission system.   The speaker device performs signal processing on the audio signal received from the source device with an audio signal processing parameter indicated by the operation signal, and transmits an execution notification of the signal processing to the source device. The voice radio transmission system according to claim 1.   The audio wireless transmission system according to claim 1, wherein the speaker device includes a receiving unit that receives the operation signal indicated by the user operation from a mobile terminal device by wireless communication. One speaker device among the plurality of speaker devices that receives the sound signal from a source device that transmits the sound signal to the plurality of speaker devices by wireless communication,
The speaker device receives a user operation and outputs the audio signal changed according to an operation signal indicated by the user operation. The speaker device transmits the operation signal to the source device,
6. The speaker device according to claim 5, wherein an audio signal or an audio signal processing parameter for the plurality of speaker devices changed by the source device based on the operation signal is received from the source device. .   The speaker device performs signal processing on the audio signal received from the source device with an audio signal processing parameter indicated by the operation signal, and transmits an execution notification of the signal processing to the source device. The speaker device according to claim 5.   The speaker device according to any one of claims 5 to 7, further comprising a receiving unit configured to receive the operation signal indicated by the user operation from a mobile terminal device by wireless communication. A source device for transmitting audio signals to a plurality of speaker devices by wireless communication,
A source device, wherein the audio signal or the audio signal processing parameter is changed in accordance with an operation signal indicated by a user operation received by the speaker device.   10. The audio signal or the audio signal processing parameter for receiving the operation signal transmitted from the speaker device and outputting the operation signal to the plurality of speaker devices is changed based on the operation signal. Source equipment described in.   The source device according to claim 9, wherein the audio signal processing parameter after being changed is received on the speaker device side and transmitted from the speaker device. The source device according to any one of claims 9 to 11, wherein the operation signal indicated by the user operation is a signal received from the mobile terminal device by wireless communication with the speaker device.

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