JPH04347998A - Acoustic device - Google Patents

Abstract

PURPOSE:To easily perform ON/OFF control of a speaker in the area by a remote control operation when listening to music in other area than the equipment main body is installed. CONSTITUTION:When an ON/OFF command is transmitted using an infraredray transmitter 122 from a subroom 108, a photodiode 126 receives this. The light receiving signal is transferred to a main room 106 through a cable 115, and its code is identified by a microcomputer 178. In the case of the system ON command, a relay coil 127 is excited by turning on a transistor 190 and speaker switches 123 and 125 are turned on, permitting listening to the music in a subroom 108. In the case of the system OFF command, the relay coil 127 is degaussed by turning off the transistor 190, and both speakers 123 and 125 are turned off, resulting in stopping the music.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio device that allows music to be heard in a plurality of divided areas, such as rooms in a house, and which facilitates turning on and off speakers.

0002

BACKGROUND OF THE INVENTION Custom installations have recently been booming, mainly in the United States, and many systems exist. Generally, custom installations are ideal for a system that allows you to listen to music anywhere in the house, and devices that require power such as amplifiers and CD players are placed in a room called the main room (in many cases, the guest room is used as the main room). ), and in-wall speakers in other sub-rooms (kitchen, children's room, etc. Also, it may be outdoors instead of in the room), the amplifier in the main room,
The idea is to install an operation panel or an infrared remote control light receiving unit to control devices such as CDs.

As an example, FIG. 2 shows the simplest system, in which music can be enjoyed in a main room 10 and one sub-room 12. In the main room 10, a multi-room compatible receiver 14 (receiver: an audio device that combines an amplifier and a tuner) and speakers 16, 17 are installed, and in the sub room 12, speakers 18, 19 and a light receiving unit 2 are installed.
0 is set. The speaker terminal of receiver 14 is A
System and B system are available. The speakers 16 and 17 in the main room 10 are connected to the A-system speaker terminals of the receiver 14 via cables 30 and 31, and the speakers 18 and 19 in the sub-room 12 are connected to the B-system speaker terminals of the receiver 14 via cables 32 and 33. connected to the terminal. In the main room 10, the infrared command signal 23 from the remote controller 22 is received by the light receiving unit 24 of the receiver 14, and in the sub room 12, the infrared command signal 28 from the remote controller 26 is received by the light receiving unit 20 and sent to the receiver 14 via the cable 34. Input to the received light signal input terminal.

[0004] The remote controllers 22 and 26 have speakers A and B.
Keys are provided to turn each system on and off, and if you command the A system to turn on, the speakers 16 and 17 in the main room 10 will be activated by switching in the receiver 14, and the B system will be turned on. Then, the speakers 18 and 19 in the sub-room 12 will be activated, and if the A and B systems are turned on, the speakers 16 to 1 in both rooms 10 and 12 will be activated.
9 can be utilized to enjoy music in each room.

The example of FIG. 3 shows two
This system uses two power amplifiers. There are two power amplifiers 36 (A) and 37 (B) in the main room 35.
A CD player 38 and a tuner 40 are provided, respectively.
is connected as a source. power amplifier 36,3
7's output is fixed to an appropriate volume. Further, speakers 39 and 41 and an operation panel 42 are arranged in the main room 10. The operation panel 42 is provided with a changeover switch 44 for switching outputs from the power amplifiers 36 and 37 and an attenuator 46 for adjusting the volume. The sub-room has first and second sub-rooms 48 and 50. The first sub-room 48 has speakers 52 and 54 and an operation panel 56, and the second sub-room 50 has speakers 58 and 60 and an operation panel 62. It is set up. The operation panels 56 and 62 are constructed similarly to the operation panel 42 in the main room 35. Each power amplifier 36,3
The output of 7 is commonly supplied to each operation panel 42, 56, 62, and is led from these operation panels 42, 56, 62 to each speaker 39, 41, 52, 54, 58, 60. According to this, one of the outputs of the power amplifiers 36(A) and 37(B) can be independently selected for each room 35, 48, and 50 by manual operation of the operation panels 42, 56, and 62. , you can listen at your preferred volume.

The example shown in FIG. 4 is a system using an infrared re-emitter called a repeater. A receiver 66, speakers 68, 70, a speaker on/off switch 72, a repeater light receiving section 74, and a repeater re-emitting section 76 are arranged in the main room 64. The first subroom 78 is provided with speakers 80, 82, a speaker on/off switch 84, and a repeater light receiving section 86, and the second subroom 88 is provided with speakers 90, 92, a speaker on/off switch 94,
A repeater light receiving section 96 is provided. Each room 64,7
When the remote controllers 98, 100, 102 are operated from 8, 88, the light is received by the repeater light receiving parts 74, 86, 96, respectively, and the received light signals are collected in the repeater re-emitting part 76 in the main room and re-emitted from there. . This re-emitted light is then received by the light receiving section 104 of the receiver 66. Thereby, the receiver 66 can be operated from each room 64, 78, 88.

[0007]

[Problems to be Solved by the Invention] In the system shown in FIG. 2, the speakers in each room 10 and 12 can be turned on and off by remote control operation from each room 10 and 12, but this switching operation is not possible in a system. Since this is done for each room, you must know which system your room belongs to, and if you operate the system incorrectly, you will end up switching the speakers in other rooms on and off. Ta. In particular, when there are many rooms (number of systems), there is a high possibility of such erroneous operation, and the remote control also has the drawback of increasing the number of keys since keys for each system must be arranged.

Furthermore, in the system shown in FIG. 3, each room 3
Turning on and off the speakers 5, 48, and 50 must be done manually by operating the attenuators 46 on the operation panels 42, 56, and 62 provided in each room, and cannot be switched by remote control, which is troublesome. there were.

Furthermore, in the system shown in FIG. 4, similarly to the system shown in FIG. This has to be done by manual operation of the switches 72, 84, and 94, and cannot be changed by remote control operation, which is troublesome.

[0010] The present invention solves the problems in the conventional technology and provides an audio system that allows music to be heard in multiple rooms, in which speakers in one's own room can be turned on and off by simple operation using a remote control. This is to make it possible to do this.

[0011]

[Means for Solving the Problems] The present invention provides speakers disposed in a plurality of areas, remote control receiving means disposed in these areas, and command signals from the remote control received by these remote control receiving means. a device main body that commonly inputs a command to execute corresponding command contents and supplies audio signals to speakers in each area; and a command signal transmission line that transmits a command signal received by the receiving means to the device main body. , an acoustic signal transmission line for transmitting an acoustic signal sent from the device main body to each of the speakers, and a transmission line on that is disposed on each of these acoustic signal transmission lines and turns on and off each of these acoustic signal transmission lines; A reception signal from the off switch means and the remote control receiving means is input, and if this is a command to turn on or off the acoustic signal transmission path, the area where the remote control receiving means that received this command is installed is determined. and switch control means for identifying and controlling the transmission line on/off switch means for that area.

0012

According to the present invention, when a speaker is turned on or off by remote control in one area, the operation signal is received by the remote control receiving means in that area and sent to the switch control means. Then, the switch control means identifies the area in which this operation signal has been received, turns on and off the transmission line in that area, turns on the speaker in that area, and turns on the speaker in that area.
Turn off.

According to this, if the listener uses a remote control to instruct the speaker to turn on or off in the area he or she wants to listen to, the speaker in that area will be turned on or off, so that There is no need for complicated manual operations, and unlike the system shown in FIG. 2, it is possible to easily and reliably turn on and off the speakers in the area where the user is located, even without knowing the speaker system.

[0014]

【Example】

(Embodiment 1) An embodiment of the present invention is shown in FIG. Here, for ease of explanation, it is assumed that there is a main room 106 and one sub-room 108, and a case will be described in which a repeater (re-emission) system is used to control the speakers in the sub-room 108 on and off. A receiver 110 (equipment body) and a re-emission unit 112 are installed in the main room 106. The receiver 110 is configured as a combination of an amplifier and a tuner, and is housed in a place that cannot be seen from the outside, such as inside a wall. Re-emission unit 1
12 is fixed to, for example, a wall surface. A re-emitting infrared LED 114 is connected to the re-emitting unit 112 via a movable or fixed cable 113 . The re-emitting infrared LED 114 is disposed near the receiver 110,
The infrared command signal 140 re-emitted from there is transmitted to the receiver 11.
The light is received by the light receiving unit 111 of No. 0, and the operation corresponding to the contents of the command is executed.

[0015] The sub-room 108 has speakers 116,1
18 and a light receiving unit 120 that receives an infrared light command signal 124 from an infrared transmitter 122 (remote control). The infrared transmitter 122 has various keys for operating the receiver 110 as well as keys for turning on the entire system.
off (i.e. re-emission and speakers 116, 11
A system on/off key (for turning on/off the transmission of music signals to 8) is provided. The system on/off key consists of one key, and each press serves as a command to switch the system on/off. That is, in response to a system-on command, the speakers 116 and 118 are turned on and repeater operation becomes possible. Furthermore, in response to a system-off command, the speakers 116 and 118 are turned off and the repeater operation is stopped.

The light-receiving unit 120 is fixed to the wall of the sub-room 108, and is connected to the re-emitting unit 112 of the main room 106 by a multi-wire cable 115 passed through the wall. Further, speaker cables 119 (right channel) and 121 (left channel) from receiver 110 are passed through the wall and connected to speakers 116 and 118 via light receiving unit 120, respectively. There is a light receiving unit 1 in the middle of the speaker cables 119, 121.
Relay contacts 123 and 125 are disposed within the speaker switch 20 as speaker switches (transmission line on/off switch means), and are commonly turned on and off by a relay coil 127.

The light receiving unit 120 is provided with a photodiode 126 (remote control receiving means) for receiving an infrared command signal 124 from an infrared transmitter 122. A light reception signal from the photodiode 126 is amplified by an amplifier 128, and only a necessary band is extracted by a filter amplifier 130. The output of filter amplifier 130 is input to the base of transistor 132, converted into a current change, and guided to terminal 134.

Power supply +B (=12V) is supplied to the terminal 142 of the light receiving unit 120 via the re-emission unit 112. In addition, the terminal 144 is connected to the re-emitting unit 112.
connected to ground via. Said relay coil 1
27 is connected between the power supply +B and ground via a transistor 146. The base of the transistor 146 is connected to a terminal 150 via a resistor 148, and when the voltage at this terminal 150 becomes positive, the transistor 146 turns on, energizing the relay coil 127 and turning on the speaker switches 123 and 125. . Further, when the voltage at the terminal 150 becomes 0, the transistor 146 is turned off, demagnetizing the relay coil 127, and causing the speaker switches 123 and 125 to turn off.
Turn off.

The light receiving unit 120 is provided with a push button switch 152 for manually turning the system on and off. This pushbutton switch 152 is manually operated, conducts only when it is pressed, and shuts off when it is released. Pushbutton switch 152 connects power +B and terminal 15
Connected between 0 and 0. When the pushbutton switch 152 is turned on, the relay coil 127 is excited and the speaker switches 123 and 125 are turned on. The ON state of the relay coil 127 is determined by the push button switch 152 as described later.
Even if it is released, it is held by the re-emission unit 112. When the pushbutton switch 152 is pressed again, the relay coil 127 is demagnetized, and thereafter, the excitation and demagnetization are repeated every time the pushbutton switch 152 is turned on.

A power supply +B (=+12V) is supplied to the terminal 151 in the relighting unit 112. terminal 154
is connected to ground. A re-emitting infrared LED 114 is connected between the terminals 156 and 158 via a cable 113. The regulator 160 generates a +5V power source from a +12V power source. Re-emission unit 11
Terminals 162, 164, 166, 168 in 2 are connected to terminals 142, 13 of light receiving unit 120 via cable 115.
4, 144, and 150, respectively.

The light receiving signal output from the terminal 134 of the light receiving unit 120 is inputted from the terminal 164 of the re-emitting unit 112 via the cable 115, and is supplied to the re-emitting infrared LED 114 via the resistor 170 and the diode 172. It will be re-emitted. Re-emitted infrared command signal 14
0 is received by the light receiving unit 111 of the receiver 110, and the commanded content is executed. In addition, the light reception signal input to the terminal 164 is converted into a voltage change by the resistor 170, the DC is cut by the capacitor 174, and the wave is detected by the detection circuit 176.
entered into the input.

The G input of the microcomputer 178 is connected to ground, and the power supply +5V is input to the V input. Terminal 166,1
A resistor 180 and a Zener diode 182 (Zener voltage=7V) are connected between the two, and the voltage at the midpoint thereof is input to the B input of the microcomputer 178. The microcomputer 178 has a C output and a D output, and these output voltages at opposite levels, such that when one is at the "H" level, the other is at the "L" level.

When the microcomputer 178 inputs the received light signal detection output from the A input, it identifies the code and turns on the system.
Each time an off command is identified, the C and D outputs are inverted. Furthermore, each time the B input becomes +, the C and D outputs are similarly inverted. A transistor 186 is connected between the light receiving signal line 184 for re-emission and ground, and the C output of the microcomputer 178 is inputted to its base via a resistor 188. Therefore, when this C output is "H", the transistor 186
is turned on, the light receiving signal line 184 is grounded, and re-emission is stopped. Further, when the C output is "L", the transistor 186 is turned off, and the light reception signal is transmitted to the light reception signal line 1.
The light is supplied to the re-emitting LED 114 via 84 and re-emitted.

The terminal 168 of the relighting unit 112 is connected to the power supply +5 via a diode 192 and a transistor 190 as a current buffer. The D output of the microcomputer 178 is input to the base of the transistor 190. Therefore, the D output of the microcomputer 190 is “H”
When , transistor 190 is turned on and voltage from power supply +5 is applied to transistor 146 via cable 152a.
is applied to the base of As a result, the transistor 14
6 is turned on, the relay coil 127 is excited, and the speaker switches 123 and 125 are turned on. Further, when the D output is "L", the transistor 190 is turned off, which turns off the transistor 146, and the relay coil 127
is demagnetized, and the speaker switches 123 and 125 are turned off. Further, when the pushbutton switch 152 is pressed, +12V is applied to the Zener diode 182 via the cable 115a, and the B input of the microcomputer 178 is applied to +5V.
As a result, the C and D outputs are inverted. At this time, the D output is “
When the voltage is reversed from “L” (system off) to “H” (system on), the voltage from the power supply +5V is applied to cable 11.
Transistor 14 in light receiving unit 120 via 5a
6, the excitation state of the relay coil 127 is maintained even if the pushbutton switch 152 is released.

The operation of the circuit shown in FIG. 1 will be explained. It is assumed that the system is initially turned off. At this time, the C output of the microcomputer 178 is "H" and the D output is "L". Further, the transistor 186 is turned on, and the light receiving unit 1
The light reception signal from 20 is not supplied to the re-emission infrared LED 14. Further, the relay coil 127 is demagnetized. Therefore, the output of the receiver 110 is transmitted to the speakers 116,
118, and no sound is produced. Further, even if a key of the infrared transmitter 122 is operated, the receiver 110 does not respond.

When the system on/off key of the infrared transmitter 122 is pressed, the light is received by the photodiode 126, transmitted via the cable 115, and sent to the microcomputer 17.
8, the C and D outputs are inverted, and the C output becomes "L" and the D output becomes "H". Therefore, transistor 146 is turned on, relay coil 127 is excited, speaker switches 123 and 125 are turned on, and sound is output from speakers 116 and 118. Also, transistor 1
86 is turned off, the re-emitting infrared LED 114 is enabled to re-emit, and the receiver 110 is turned off to the infrared transmitter 12.
2 can be controlled. Infrared transmitter 12
Press the system on/off key again to turn on the microcomputer 17.
The C and D outputs of 8 are inverted again and the system is turned off again.

By the way, it is convenient to perform operations such as volume, source switching, tuner selection, etc. using the remote control 118.
If you just want to turn 08's sound on and off, it may be faster and more convenient to have a switch in this room and press it manually. For this reason, in the system shown in FIG. 1, the manual pushbutton switch 152 is installed in the light receiving unit 120 as described above. This push button switch 152
has exactly the same function as the system on/off key of the infrared transmitter 122. Here, in order to reduce the number of wires, one cable 115a is used to connect the pushbutton switch 1.
The re-emission unit 112 displays information indicating that 52 has been pressed.
It also serves as a relay drive signal transmission from the re-emission unit 112 to the light-receiving unit 120.

When the pushbutton switch 152 is pressed from the system off state, the transistor 146 is turned on, the relay coil 127 is energized, and the speaker switches 123, 1
25 turns on. Additionally, +12V is led to terminal 168 of re-emission unit 112 via cable 115a. At this time, +5V, which is lowered by 7V by the Zener diode 182, is applied to the B input of the microcomputer 178, and this signal inverts the C and D outputs. Since the D output remains "H" even after releasing the pushbutton switch 152, the voltage at the terminal 168 is approximately +3.8V, and the cable 115
The transistor 146 continues to be turned on via a, and the speaker switches 123 and 125 are kept on. In addition,
Since this +3.8V voltage is lower than the Zener voltage (+7V) of the Zener diode 182, it is not applied to the B input of the microcomputer 178.

When the pushbutton switch 152 is pressed again, the C and D outputs of the microcomputer 178 are inverted, and when the button is released, the D output is "L", so the terminal 168 is at 0V.
Therefore, the transistor 146 is turned off and the speaker switches 123 and 125 are turned off. This pushbutton switch 1
Figure 5 shows the voltage changes at terminals 150 and 168 due to the operation of 52.
Shown below.

As described above, infrared transmitter 1
Each time the system on/off key 22 or the push button switch 152 is pressed, the system is switched on (re-emission possible, speakers 116, 118 in the user's room turned on) and system off (re-emission stopped, speakers 116, 118 in the user's room turned off). According to the configuration shown in FIG. 1, there is no need for any special device in the receiver 110 to realize the present invention, and existing components can be used, so that the present invention can be easily realized. In addition, a speaker on/off relay (relay coil 127 and speaker switches 123, 12) is installed in the light receiving unit 120.
5), the speakers 116, 118 and speaker cables 119, 121 need only be connected to the terminals of this light receiving unit, making the connection easy, and even in the event of a failure, the entire light receiving unit 120 can be replaced. You can easily restore it by doing so. Also, speaker switch 1
Since the on/off of 23 and 125 is linked with the on/off of the repeater function, an easy-to-use system with fewer erroneous operations has been realized. (Embodiment 2) In the embodiment shown in FIG. 1, one light receiving unit 120 and one input system for the re-emitting unit 112 were used for ease of explanation, but in an actual system, control from multiple rooms is required. Since the purpose is to
Correspondingly, the input of is also multiple input. In this case, a plurality of re-emission outputs of the re-emission unit 112 are not necessarily required, and the receiver 110 can be controlled by mixing light reception signals from each room and supplying the mixture to one re-emission LED 114. Re-emission unit 11 in FIG.
The diode 172 in the diodes 2 is for preventing current backflow at that time, and the function of the transistor 186 for stopping the re-emission operation is also made independent for each system.

FIG. 6 shows an example of a system with four rooms (one main room and three sub-rooms). With this system, you can use a remote control or pushbutton switch to output sound and control the receiver only from the room where the system is turned on. Here, too, the on/off of the speaker is linked to the on/off of the repeater function, creating an easy-to-use system with fewer erroneous operations.

[0032] The main room 200 has a receiver 110 (
device body), speakers 116, 118, light receiving unit 1
20, a re-emission unit 206 is provided. The re-emission unit 206 is connected to an infrared LE for re-emission via a cable 113.
D114 is connected, and this LED114 is connected to the receiver 11.
It is arranged at a position where light can be received by the light receiving section of 0. The main room 200 is the room where the receiver 110 is located, and the receiver 110 can be directly controlled by the infrared transmitter 122, but in general, in such systems, equipment is often housed and hidden from view, so the main room 200 is the room where the receiver 110 is located. A light receiving unit 120 is also provided in the room 200. The light receiving unit 120 has the same structure as the light receiving unit 120 shown in FIG.

The re-emitting unit 206 is configured by preparing the re-emitting unit 112 of FIG. 1 for each room and housing them all together as one device. The re-emitting unit 112 has the same structure as the re-emitting unit 112 of FIG.
58 (FIG. 1) to each other and connect the cables 113 thereto.
The infrared LEDs 114 for re-emission are commonly connected through. Each re-emitting unit 112 is connected via a cable 115 to a light-receiving unit 120 in each room. In this case, each re-emitting unit 112 is made independent by the diode 172 (FIG. 1) as described above, so that each room 200
, 208, 210, and 212 are independently guided to an infrared LED 114 for re-emission.

[0034] First to third subrooms 208, 210, 2
12 are provided with speakers 116, 118 and a light receiving unit 120, respectively. Light receiving unit 120
has the same configuration as the light receiving unit 120 of FIG. 1, and is provided with a photodiode 126 for receiving an infrared light command signal from a remote controller and a push button switch 152 for manually turning the system on and off. The speakers 116 and 118 in each room each have a speaker cable 119
(right channel) and 121 (left channel) are commonly connected to speaker terminals 200 and 222 of receiver 110.

In the system shown in FIG. 6, when the system on/off key of the infrared transmitter 122 is operated in any room, the light is received by the light receiving unit 120 of that room.
It is input to the corresponding re-emission unit 112 in the re-emission section 206, identified by the microcomputer 178 therein, and C,
Inverts the D output, turns on transistors 146 and 186,
It switches off to enable or disable operation of the receiver 110 from this room, and also turns on or off the speaker switches 123, 125 for that room (FIG. 1). The same applies when the push button switch 152 is pressed. In this way, by commanding the system to turn on or off in each room, the system can be turned on or off only for that room.
Can be turned off.

[0036]

[Modification example] In the above embodiment, the speaker switch 123, 1
25 is disposed within the light receiving unit 120, but the present invention is not limited thereto, and the acoustic signal transmission path to each room may be disposed at any position as long as it can be turned on and off individually. Furthermore, the relay coil 127 is not limited to being disposed within the light receiving unit 120, but may be disposed anywhere as long as the speaker switches 123 and 125 can be turned on and off.

Furthermore, in the above embodiment, the re-emission unit 11
2 is arranged in the main room, but it can also be arranged in a sub-room (for example, inside the light receiving unit 120) (only the re-emitting infrared LED 114 is arranged near the receiver 110). Furthermore, in the embodiment of FIG. 6, the re-emission unit 1
12 is provided in each room, but one microcomputer 178 (FIG. 1) can also be shared. In that case, for example, the detection circuit 176 attaches information identifying which room the signal is coming from to the detection output and sends it to the microcomputer 178, or the microcomputer 178 itself inputs the signals from each room through separate ports. With this configuration, it is possible to control whether the system is turned on or off for the corresponding room.

Further, in the above embodiment, the system on/off key of the infrared transmitter 122 and the pushbutton switch 1
In 52, one key or pushbutton is used for both on and off, but separate keys can be provided for on and off.

Furthermore, in the above embodiment, the case where the main body of the device is constituted by the receiver 110 has been described, but various other devices can be used. Further, the device main body does not need to be one device, and can be composed of a plurality of devices.

Further, in the embodiment described above, the present invention is applied to a repeater, but it can also be applied to other systems (for example, a system in which the light receiving unit 120 is transmitted to the main body of the device by wire).

Further, in the above embodiment, the case where the remote controller transmits infrared light has been described, but radio waves or other wireless signals may also be used. Music signals can also be transmitted to speakers in each area by wireless transmission.

Furthermore, the present invention can be applied to a plurality of various divided areas in addition to rooms in a house.

[0043]

[Effects of the Invention] As explained above, according to the present invention, when a listener uses a remote control to instruct the speaker to turn on or off in the area where the listener wants to listen, the speaker in that area can be turned on or off. , there is no need for troublesome manual operations as shown in Figures 3 and 4, and you can easily and reliably turn on and off the speakers in your area without knowing the speaker system like in the system shown in Figure 2. Switching can be performed.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a conventional system.

FIG. 3 is a schematic diagram showing a conventional system.

FIG. 4 is a schematic diagram showing a conventional system.

5 is a diagram showing changes in voltage at terminals 150 and 168 due to operation of pushbutton switch 152 in FIG. 1. FIG.

FIG. 6 is a circuit diagram showing another embodiment of the invention.

[Explanation of symbols]

106,200 Main room (room) 108,20
8,210,212 Sub room (room) 110
Receiver (equipment body) 128, 130, 132, 115, 170, 184, 1
72, 113, 114, 140 Command signal transmission line 11
6,118 speakers

Claims (1)

[Claims] [Claim 1] Speakers arranged in a plurality of areas, remote control receiving means arranged in these areas, and command signals from the remote controllers received by these remote control receiving means are commonly input and handled. a device main body that executes command contents and supplies audio signals to speakers in each area; a command signal transmission path that transmits command signals received by the receiving means to the device main body; an acoustic signal transmission line for transmitting an acoustic signal to each of the speakers; a transmission line on/off switch disposed on each of these acoustic signal transmission lines for turning on and off each of these acoustic signal transmission lines; and the remote control receiver. Input the received signal from the means,
If this is a command to turn on or off the acoustic signal transmission path, identify the area where the remote control receiving means that received this command is installed, and turn on or turn off the transmission path in that area.
An audio device comprising switch control means for controlling on/off of the off switch means.