JP2021132354A - Radio system, slave machine, and main device - Google Patents

Abstract

To provide a radio system that makes it possible to suppress distortion in voice caused by sound volume adjustment, reduce a load on a main device, and further maintain linearity in sound volume variation.SOLUTION: A radio system comprises a slave machine 2 and a main device 3. The slave machine 2 comprises: a second transmission unit 25 that transmits, as main voice information, voice input to the slave machine 2 to the main device 3; a mixing amount determination unit 26 that generates mixing amount information according to setting of a sub-volume S and transmits the mixing amount information to the main device 3; and a sound volume adjustment unit 22 that adjusts a sound volume of mixed voice information according to setting of a main volume M. The main device 3 comprises: a mixing amount adjustment unit that according to the mixing amount information, adjusts a mixture ratio between the main voice information and sub-voice information received from an external voice apparatus or another slave machine 2; a first mixing unit that mixes the main voice information and the sub-voice information on the basis of the mixture ratio to create the mixed voice information; and an output unit that outputs the mixed voice information to a master machine 4.SELECTED DRAWING: Figure 3

Description

The present invention relates to a wireless system having an improved volume adjustment function, and a slave unit and a main device constituting the wireless system.

One of the wireless systems such as wireless intercom is known to be composed of a slave unit, a main unit, and a master unit. In this wireless system, the audio transmitted from the slave unit and the external audio device or another slave unit to the main unit is mixed in the main unit and then transmitted to the slave unit again via the master unit. For example, the slave unit of the wireless system shown in FIG. 8 (a) can receive audio from the slave unit and the external audio device at the same time, and the slave unit of the wireless system shown in FIG. 8 (b) is the slave unit. And the voice from other slave units can be received at the same time. That is, the slave unit can receive the audio of the two systems at the same time, and the audio of the two systems is the audio from the slave unit and the audio from the external audio device or another slave unit. Such wireless systems are mainly used in broadcasting stations and theaters. Although not particularly shown, transmission from the slave unit and the external audio device or another slave unit to the main unit is also performed via the master unit in the same manner as transmission from the main unit to the slave unit.

In this wireless system, the slave unit includes two volume adjustment volumes for individually adjusting the volume of these two systems of audio. By operating this volume adjustment volume, the user can individually adjust the volume of the two received audio systems. For example, in FIGS. 8A and 8B, of the two volume adjustment volumes provided in the slave unit, the volume A, the external audio device, or the volume adjusting volume for adjusting the volume of the audio data transmitted from the slave unit is used. Volume B is used to adjust the volume of audio data transmitted from another slave unit. The volumes A and B generate volume information VA and VB, respectively, by being individually operated by the user, and transmit the volume information VA and VB to the main device. The main device individually adjusts the volume of the two audio data based on the volume information VA and VB. After that, the main unit mixes the audio data of the two systems whose volume is individually adjusted, and transmits the audio data to the slave unit via the master unit. The slave unit can simultaneously listen to two systems of audio data whose volume has been adjusted individually.

Japanese Unexamined Patent Publication No. 2013-058872

In the prior art, there are the following three problems. First, since the upper and lower limits of the adjustable volume are specified for the entire wireless system including the main unit, when the slave unit transmits volume information VA and VB that exceed these upper and lower limits, it is mainly used. The volume-adjusted audio in the device was sometimes distorted.

Secondly, the main device has two volume information VAs that control audio data and these two systems of audio data from one slave unit in addition to audio data transmitted from an external audio device or another slave unit. And VB need to be received. In addition, the main device must adjust the volume based on the volume information VA and VB, and also mix the audio data of the two systems. Therefore, as the number of slave units connected to the main unit increases, the load on the main unit increases.

Third, the slave unit transmits volume information VA and VB to the main unit by wireless communication, but in order to shorten the time required for data transmission / reception and improve the responsiveness of volume adjustment, volume information It is necessary to thin out the data that composes VA and VB. In addition, data thinning is required to reduce the load on the main unit as described above and prevent a large delay. As a result, the linearity of the volume change is lost.

In order to solve the above problems, the present invention provides a wireless system capable of suppressing audio distortion due to volume adjustment, reducing the load on the main device, and maintaining the linearity of volume change. The purpose.

The wireless system of the present invention has the following configuration.
(1) A wireless system composed of a plurality of slave units provided with a main volume and a sub volume, a main device that outputs mixed audio information, and a master unit that transmits the mixed audio information to the slave unit. Is.
(2) The slave unit generates mixing amount information according to the setting of the transmission unit that transmits the voice input to the slave unit to the main device as the main voice information and the sub volume, and the mixing amount. It includes a mixing amount determining unit that transmits information to the main device, and a volume adjusting unit that adjusts the volume of the mixed audio information according to the setting of the main volume.
(3) The main device includes a mixing amount adjusting unit that adjusts the mixing ratio of the main audio information and the sub audio information received from an external audio device or another slave unit according to the mixing amount information, and the mixing. It includes a mixing unit that mixes the main audio information and the sub audio information based on the ratio to obtain the mixed audio information, and an output unit that outputs the mixed audio information to the master unit.

Further, the wireless system of the present invention may further include the following configurations.
(1) The main device includes a plurality of sets of the mixing amount adjusting unit and the mixing unit, and mixes a plurality of the mixed audio information mixed by each of the plurality of sets of the mixing amount adjusting unit and the mixing unit. A mixing unit is further provided.

A slave unit and a main device constituting the wireless system are also aspects of the present invention.

The wireless system of the present invention can suppress distortion of sound due to volume adjustment, reduce the load on the main device, and maintain the linearity of volume change.

The schematic which shows the wireless system which concerns on embodiment. The external view which shows the slave unit which concerns on embodiment. The functional block diagram of the slave unit which concerns on embodiment. The functional block diagram of the main apparatus which concerns on embodiment. The block diagram which shows a part of the wireless system which concerns on embodiment. The flowchart which shows the operation of the wireless system which concerns on embodiment. The block diagram which shows the wireless system which concerns on other embodiment. Block diagram showing a conventional wireless system.

[Embodiment]
[composition]
[1. Wireless system]
As shown in FIG. 1, the wireless system 1 of the present embodiment includes a plurality of slave units 2a, 2b, 2p, 2q, 2x, 2y and a plurality of slave units 2a, 2b, 2p, 2q, which include a headset H. A plurality of main devices 3 that wirelessly communicate with 2x and 2y, and a plurality of slave units 2a, 2b, 2p, 2q, 2x, 2y that are connected to the main device 3 via a wire such as a LAN cable and wirelessly communicate with each other. It includes master units 4a and 4b. As the frequency of wireless communication, for example, a 2.4 GHz band corresponding to a general wireless LAN, a 1.9 GHz band corresponding to the DECT standard, or the like can be used. When the slave units 2a, 2b, 2p, 2q, 2x, and 2y are described without distinction or collectively, the slave units 2a, 2b, 2p, 2q, 2x, and 2y are simply referred to as the slave unit 2. Notated as. The same notation is used for other codes.

[2. Cordless handset]
The slave unit 2 will be described with reference to FIGS. 2 and 3. As shown in FIG. 2, the slave unit 2 includes two volume control volumes. In the slave unit 2 of the present embodiment, of the two volume adjustment volumes, one is the main volume M and the other is the sub volume S. The main volume M adjusts the volume of the mixed voice information transmitted from the master unit 4. The sub volume S adjusts the mixing ratio of the two systems of audio data in the mixed audio information. Specifically, the mixing amount of the other of the two audio data is adjusted. As shown in FIG. 3, the slave unit 2 includes a first receiving unit 21, a volume adjusting unit 22, a first transmitting unit 23, a second receiving unit 24, and a second transmitting unit 25. A mixing amount determining unit 26 is provided. A processor such as an electronic circuit or a DSP can be used for each of these configurations.

The first receiving unit 21 receives the voice data transmitted from the master unit 4. Although details will be described later, this audio data is obtained by further mixing mixed audio information generated by mixing in a plurality of signal processing units 32 of the main device 3.

The volume adjusting unit 22 is provided after the first receiving unit 21, and adjusts the volume of the mixed voice information input from the first receiving unit 21 according to the setting of the main volume M. The first transmission unit 23 is provided after the volume adjustment unit 22, and transfers the mixed voice information whose volume has been adjusted by the volume adjustment unit 22 to the headset H (see FIG. 1) attached to the slave unit 2. Send.

The second receiving unit 24 receives the voice emitted by the user to the headset H attached to the slave unit 2 as voice data. The second transmission unit 25 is provided after the second reception unit 24, and transmits this audio data to the headset H and the main device 3 attached to the slave unit 2. That is, the user of the slave unit 2 can hear his / her own voice with almost no delay. The audio data and the mixing amount information MS described later are transmitted from the slave unit 2 to the main unit 3 via the master unit 4, but in the following description and figures in order to make the data path easy to understand. Not shown in particular.

The mixing amount determination unit 26 includes a mixing amount information generation unit 261 and a mixing amount information transmission unit 262. The mixing amount information generation unit 261 generates the mixing amount information MS according to the setting of the sub volume S. The mixing amount information MS determines the mixing ratio of the audio data of the two systems. Specifically, the mixing amount of the audio data transmitted from the external audio device 5 or another slave unit 2b to the main unit 3 described later with respect to the audio data transmitted from the slave unit 2a to the main unit 3 is determined. The mixing amount information transmission unit 262 transmits the mixing amount information MS generated by the mixing amount information generation unit 261 to the main device 3. It should be noted that once the mixing amount information MS of the present embodiment is transmitted, it is not generated and transmitted unless the setting of the sub-volume S is changed.

[3. Main device]
As shown in FIG. 4, the main device 3 includes a plurality of receiving units 31, a plurality of signal processing units 32 each including a mixing amount adjusting unit 321 and a first mixing unit 322, and a second mixing unit 33. And an output unit 34 and a transmission command unit 35. A processor such as an electronic circuit or a DSP can be used for each of these configurations.

The number of the receiving unit 31 and the signal processing unit 32 is provided at least corresponding to the number of slave units 2. In the present embodiment, the receiving unit 31 and the signal processing unit 32 provided in the main device 3 are equal to the number of slave units 2. The receiving unit 31 that receives audio data from the slave unit 2a as main audio information is referred to as a receiving unit 31a, and the signal processing unit 32 that performs signal processing on the main audio information and the sub audio information described later is referred to as a signal processing unit 32a.

The main voice information for the slave unit 2a is, for example, voice data transmitted and received between the slave units 2a, 2p, and 2q in the group 1 to which the slave units 2a, 2p, and 2q belong, and is transmitted from the slave unit 2a to the receiving unit 31a. This is audio data to be transmitted. This voice data is signal-processed by the signal processing unit 32a and transmitted to the slave units 2p and 2q via the master unit 4. Further, the audio data transmitted from the slave units 2p and 2q to the receiving units 31p and 31q, respectively, processed by the signal processing units 32p and 32q, and then transmitted to the slave unit 2a via the master unit 4 is also obtained. , This is the main audio information for the slave unit 2a.

The sub-audio information for the slave unit 2a is, for example, audio data transmitted from the external audio device 5 to the receiving unit 31a, or transmitted / received between other slave units 2b, 2x, and 2y belonging to the group 2 to which the slave unit 2a does not belong. The voice data to be generated is, for example, voice data transmitted from another slave unit 2b to the receiving unit 31a. The external audio device 5 transmits audio data to the wireless system 1 and is not included in the wireless system 1. The external audio device 5 is, for example, a voice adjustment console or a wired intercom. The audio data transmitted by the external audio device 5 includes, for example, an instruction related to program progress.

The sub-audio information will be described in more detail with reference to FIGS. 5A and 5B. In addition, in FIGS. 5A and 5B, only the main ones among the above-mentioned configurations are shown. First, FIG. 5A shows a case where the voice data from the external voice device 5 becomes the sub voice information. In this case, the sub-audio information for the slave unit 2a is audio data transmitted from the external audio device 5 to the receiving unit 31a, and after the signal processing is performed by the signal processing unit 32a, the child unit 4 via the master unit 4. This is audio data transmitted to the machine 2a.

Next, FIG. 5B shows a case where voice data from another handset 2 belonging to a group different from that of the handset 2a serves as sub-voice information. In this case, the sub-audio information for the slave unit 2a is, for example, audio data transmitted from another slave unit 2b to the receiving unit 31a, and after signal processing by the signal processing unit 32a, the sub-audio information is processed via the master unit 4. This is audio data transmitted to the handset 2a. Further, the voice data transmitted from the other handset 2x and 2y belonging to the group 2 different from the handset 2a to the receiving unit 31a can also be the sub voice information for the handset 2a.

The receiving unit 31a receives audio data from the second transmitting unit 25 of the slave unit 2a, and receives the mixing amount information MS from the mixing amount information transmitting unit 262 of the slave unit 2a. Further, the receiving unit 31a also receives audio data from the external audio device 5 or the second transmitting unit 25 of the other slave unit 2b. However, in the following description, when the audio data from the slave unit 2a is used as the main audio information, the audio data from the external audio device 5 is used as the sub audio information, and the audio data from the other slave unit 2b is used as the sub audio information. The description of the above will be omitted.

The signal processing unit 32 is provided after the receiving unit 31, and performs signal processing on the two systems of audio data received by the receiving unit 31.

The mixing amount adjusting unit 321 included in the signal processing unit 32 adjusts the mixing amount of the sub-audio information with respect to the main audio information based on the mixing amount information MS. The ratio of the mixing amount of the audio data of these two systems is equal to the ratio of the volume of both. This volume ratio does not change before and after the mixed audio data is transmitted from the main device 3 to the slave unit 2 and the volume is adjusted by the volume adjusting unit 22. Further, the mixing amount adjusting unit 321 adjusts the mixing amount of the sub-audio information with respect to the main audio information based on the latest mixing amount information MS. That is, the mixing amount once adjusted does not change until a new mixing amount information MS is transmitted.

The first mixing unit 322 included in the signal processing unit 32 mixes the main audio information with the sub audio information whose mixing amount has been adjusted by the mixing amount adjusting unit 321 to generate mixed audio information.

The second mixing unit 33 is provided after the plurality of signal processing units 32, and mixes a plurality of mixed audio information generated by each of the plurality of signal processing units 32. At this time, the mixed audio information mixed by the second mixing unit 33 differs depending on the transmission destination slave unit 2. For example, mixed voice information including voice data from the user of the handset 2a is not transmitted to the handset 2a. This is because it is difficult for the user of the slave unit 2a to speak while listening to his / her own voice, which is heard late. That is, this mixed voice information is transmitted to the slave units 2p and 2q belonging to the same group 1 as the slave unit 2a. As described above, the mixed audio information mixed by the mixing unit 33 is different between the slave unit 2 that has transmitted the audio data as the main audio information and the slave unit 2 that belongs to the same group.

The output unit 34 is provided after the second mixing unit 33, and outputs the audio data in which a plurality of mixed audio information is mixed in the second mixing unit 33 to the master unit 4. The transmission command unit 35 instructs the master unit 4 to transmit the audio data output to the master unit 4 by the output unit 34 to the plurality of slave units 2. The output unit 34 and the transmission command unit 35 are connected to the master unit 4 via a wire such as a LAN cable.

[4. Master unit]
The master unit 4 transmits the voice data input from the output unit 34 to the plurality of slave units 2 in response to a command from the transmission command unit 35. It is preferable that the master unit 4 is provided as many as the number of groups to which the plurality of slave units 2 belong. Further, the number of slave units 2 that can be transmitted by one master unit 4 at a time is, for example, 10. The master unit 4 includes a processor such as an electronic circuit and a DSP.

[Action]
The operation of the wireless system 1 in the present embodiment will be described with reference to the flowchart of FIG. First, as shown in FIG. 3, the second receiving unit 24 of the handset 2a receives the voice emitted by the user as voice data via the headset H attached to the handset 2a. The second transmitting unit 25 transmits the voice data input from the second receiving unit 24 to the main device 3 (step S01). This voice data is the main voice information for the slave unit 2a.

Next, the mixing amount information generation unit 261 of the mixing amount determination unit 26 generates the mixing amount information MS according to the setting of the sub volume S. The sub volume S may be set to an initial value in advance, or may be set to a value operated by the user. As a result, the mixing amount information MS generated by the mixing amount information generation unit 261 is determined. The mixing amount information transmission unit 262 transmits the mixing amount information MS generated by the mixing amount information generation unit 261 to the main device 3 (step S02).

Further, the external audio device 5 transmits the audio data generated by the external audio device 5 to the main device 3 (step S03). It should be noted that this voice data is sub-voice information for the slave unit 2a.

The above steps S01 to S03 may be performed in any order. For example, steps S02, S03, and S01 can be performed in this order.

After steps S01 to S03, as shown in FIG. 4, the receiving unit 31a of the main device 3 receives the main audio information and the mixing amount information MS from the slave unit 2a, and the sub audio information from the external audio device 5. The mixing amount adjusting unit 321 of the signal processing unit 32a adjusts the mixing amount of the sub-audio information with respect to the main audio information based on the mixing amount information MS received by the receiving unit 31a (step S04). The first mixing unit 322 mixes the main audio information with the sub audio information whose mixing amount has been adjusted by the mixing amount adjusting unit 321 to generate mixed audio information (step S05).

After step S05, the second mixing unit 33 mixes the plurality of mixed voice information generated by the plurality of signal processing units 32 (step S06). The output unit 34 outputs the audio data in which a plurality of mixed audio information is mixed in the second mixing unit 33 to the master unit 4 (step S07). The master unit 4 transmits the voice data input from the output unit 34 to the plurality of slave units 2 in response to a command from the transmission command unit 35 (step S08). As described above, this voice data including the voice data from the slave unit 2a as the main voice information is not transmitted to the slave unit 2a. Therefore, in the description of the following steps, it is assumed that the voice data including the voice data from the slave unit 2p is transmitted to the slave unit 2a through the steps S01 to S08 as the main voice information.

After step S08, the first receiving unit 21 of the slave unit 2a receives the audio data mixed by the second mixing unit 33 from the master unit 4. Finally, the volume adjusting unit 22 of the slave unit 2a adjusts the volume of the mixed voice information input from the first receiving unit 21 according to the setting of the main volume M (step S09). The main volume M is set to an initial value in advance, and in the present embodiment, the initial value is set to 0 (silence). The first transmission unit 23 transmits the mixed voice information whose volume has been adjusted by the volume adjustment unit 22 to the headset H attached to the slave unit 2a. The headset H separately outputs the main voice information and the sub voice information from the mixed voice information by a signal processing unit and an output unit (not shown). As a result, the user of the slave unit 2a listens to the audio of the two systems at the same time.

[effect]
(1) The wireless system 1 of the present embodiment includes a main volume M and a sub volume S provided in the slave unit 2, a volume adjusting unit 22 and a mixing amount determining unit 26 provided in the slave unit 2, and a main device 3. The mixing amount adjusting unit 321 and the first mixing unit 322 provided in the above are provided. As a result, when the volume ratio of the main audio information and the sub audio information is appropriate, the volume of the audio data of the two systems can be adjusted at once simply by operating the main volume M. On the other hand, if it is difficult to hear only one of the main audio information and the sub audio information, operate the sub volume S and adjust the volume ratio of the main audio information and the sub audio information to make it difficult to hear without changing the overall volume. You can clearly hear the voice information of. By operating the two volumes M and S in this way, the overall volume and the mixing amount can be freely adjusted.

Further, since the upper and lower limit values of the adjustable volume depend on the slave unit 2, the volume information from the slave unit 2 exceeds the upper and lower limit values as in the case of adjusting the volume in the main unit, and the volume adjustment There is no risk of the later voice being distorted. In this way, the volume can be adjusted by the slave unit 2 alone without distorting the audio data without changing the upper and lower limit values defined for the entire wireless system.

Further, as shown in FIGS. 8A and 8B, the main device in the conventional wireless system has voice data of voice emitted by the user from one slave unit and two volume information, that is, the voice. It was necessary to receive the volume information VA related to the data and the volume information VB related to the voice data from the external audio device or another slave unit. The main unit must also adjust the volume. In this case, as the number of slave units connected to the main unit increases, the load on the main unit increases. However, the main device 3 of the wireless system 1 of the present embodiment only needs to receive the voice data of the voice emitted by the user and one mixing amount information MS from the slave unit 2. Moreover, since this mixing amount information MS is for adjusting the volume of the sub-audio information, which is less frequently adjusted in volume than the main audio information, its reception frequency is also relatively low. Further, the main device 3 does not adjust the volume, and only needs to mix the audio data of two systems based on the mixing amount information MS. As a result, even if the number of slave units 2 connected to the main unit 3 increases, the burden on the main unit 3 is small, so that the resources of the main unit 3 can be used for multi-functionality and high speed.

In addition, in the wireless system 1 of the present embodiment, the slave unit 2 adjusts the volume instead of transmitting the volume information VA and VB to the main device by wireless communication as in the prior art. As a result, there is no need to thin out the volume information data in order to reduce the load on the main unit and eliminate a large delay, so that the linearity of the volume change related to the volume adjustment is not lost.

(2) The wireless system 1 of the present embodiment further includes a second mixing unit 33 provided in the main device 3. As a result, the plurality of mixed audio information mixed by the plurality of first mixing units 322 can be further mixed to transmit the plurality of mixed audio information at one time.

[Other Embodiments]
The present invention is not limited to the above-described embodiment, and at the implementation stage, the components can be modified and embodied within a range that does not deviate from the gist thereof. In addition, various inventions can be formed by an appropriate combination of the plurality of components disclosed in the above-described embodiment. For example, some components may be removed from all the components shown in the embodiments. Specifically, it also includes other embodiments such as the following.

(1) The wireless system 1 of the above embodiment includes six slave units 2a, 2b, 2p, 2q, 2x, 2y, one main unit 3, and two master units 4a, 4b. The number of the machine 2, the main device 3, and the master unit 4 is not limited to this. For example, as shown in FIG. 7, the present invention can be applied to a large-scale wireless system including 60 slave units 2, one main device 3, and 16 master units 4. Is. In this wireless system, one main device 3 includes 60 sets of receiving units 31 and signal processing units 32. Further, it is assumed that the sub-audio information for the plurality of slave units 2 is audio data from the external audio device 5. In a wireless system provided with a large number of such slave units 2, high computing performance is required for the main unit 3, but the information transmitted from each slave unit 2 is relatively small, so that the burden on the main unit 3 is increased. The effect of reducing is more remarkable.

(2) In the wireless system 1 of the above embodiment, the mixing amount of the sub-audio information is adjusted with respect to the main audio information, but the mixing amount of the main audio information may be adjusted with respect to the sub-audio information.

(3) In the wireless system 1 of the above embodiment, the sub-audio information for the slave unit 2 of the group 1 is the audio data transmitted and received between the other slave units 2 belonging to different groups 2, but the same group 1 It may be voice data transmitted and received between the slave units 2 belonging to. For example, the user of the slave unit 2a can listen to the audio data transmitted from the slave unit 2q as the sub audio information while listening to the audio data from the slave unit 2p as the main audio information.

(4) Although one main device 3 of the above embodiment is provided, a plurality of main devices 3 may be provided. In this case, a mixing unit may be further provided after the plurality of main devices 3.

(5) The main device 3 of the above embodiment includes a number of receiving units 31 and signal processing units 32 corresponding to the number of slave units 2, but one set of receiving units 31 for a plurality of slave units 2. And the signal processing unit 32 may be provided. For example, it is suitable when the number of slave units 2 connected to the main device 3 is relatively small.

(6) Although each configuration of the above embodiment is connected by wire or wirelessly, all of them may be connected by wireless.

1 ... Wireless system 2 ... Slave unit 21 ... First receiving unit 22 ... Volume adjusting unit 23 ... First transmitting unit 24 ... Second receiving unit 25 ... Second transmitting unit 26 ... Mixing amount determining unit 261 ... Mixing Amount information generation unit 262 ... Mixing amount information transmission unit 3 ... Main device 31 ... Reception unit 32 ... Signal processing unit 321 ... Mixing amount adjustment unit 322 ... First mixing unit 33 ... Second mixing unit 34 ... Output unit 35 ... Transmission command unit 4 ... Master unit 5 ... External audio device

Claims (5)

A wireless system consisting of a plurality of slave units provided with a main volume and a sub volume, a main device that outputs mixed audio information, and a master unit that transmits the mixed audio information to the slave unit. ,
The slave unit
A transmission unit that transmits the voice input to the slave unit as main voice information to the main device, and
A mixing amount determining unit that generates mixing amount information according to the setting of the sub volume and transmits the mixing amount information to the main device.
A volume adjusting unit for adjusting the volume of the mixed audio information according to the setting of the main volume is provided.
The main device is
A mixing amount adjusting unit that adjusts the mixing ratio of the main audio information and the sub audio information received from the external audio device or another slave unit according to the mixing amount information.
A mixing unit that mixes the main audio information and the sub audio information based on the mixing ratio to obtain the mixed audio information.
An output unit that outputs the mixed audio information to the master unit is provided.
Wireless system. The main device is
A plurality of sets of the mixing amount adjusting unit and the mixing unit are provided.
A mixing unit for mixing a plurality of the mixed audio information mixed by the plurality of sets of the mixing amount adjusting unit and the mixing unit is further provided.
The wireless system according to claim 1. A slave unit constituting the wireless system according to claim 1 or 2.
A transmission unit that transmits the voice input to the slave unit as main voice information to the main device, and
A mixing amount determining unit that generates mixing amount information according to the setting of the sub volume and transmits the mixing amount information to the main device.
A slave unit including a volume adjusting unit that adjusts the volume of the mixed audio information according to the setting of the main volume. A main device constituting the wireless system according to claim 1 or 2.
A mixing amount adjusting unit that adjusts the mixing ratio of the main audio information and the sub audio information received from the external audio device or another slave unit according to the mixing amount information.
A mixing unit that mixes the main audio information and the sub audio information based on the mixing ratio to obtain the mixed audio information.
A main device including an output unit that outputs the mixed audio information to the master unit. A plurality of sets of the mixing amount adjusting unit and the mixing unit are provided.
A mixing unit for mixing a plurality of the mixed audio information mixed by the plurality of sets of the mixing amount adjusting unit and the mixing unit is further provided.
The main device according to claim 4.

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