JPH09130492A - Remote control system for electroacoustic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the configuration of the system independently of a distance between an operation device and an electroacoustic device by connecting the operation device and the electroacoustic device located apart from the operation device by a telephone line and controlling the electroacoustic device through the telephone line. SOLUTION: In the state of the connection between the operation device 1 and an amplifier main body 2, an operation command representing adjustment of a variable resistor 24 in the main body 2 to minimize a sound volume of a speaker is given to a CPU 12 from an operation section 13 of the operation device 1. The CPU 12 provides an output of control data corresponding to the command. The control data are modulated by a MODEM 31 and sent to the amplifier main body 2 via telephone line 3. Then the data are demodulated by a MODEM 32 and fed to the amplifier main body 2. A CPU 26 in the amplifier main body 2 varies the variable resistor 24 to minimize the sound volume of the speaker according to the received control data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control system for an electro-acoustic apparatus capable of controlling an electro-acoustic apparatus such as an amplifier and a graphic equalizer from a position remote from the electro-acoustic apparatus.

[0002]

2. Description of the Related Art Conventionally, there is a system as shown in FIG. 4, for example. The system shown in the figure is such that an electroacoustic device, for example, an amplifier main body 2 located at a position distant from the operating device 1 can be remotely controlled by the operating device 1.
And are connected to each other by a remote control cable 103 dedicated to this system. The remote control cable 103 is connected to the remote control terminals 11 and 21 provided on the operating device 1 and the amplifier main body 2, respectively.

By the way, the amplifier body 2 has a built-in buffer amplifier 2 for receiving an audio signal input from an external sound source such as a microphone or a cassette tape recorder (not shown).
2 and the power amplifier 23, and the amplified signal is output to a speaker (not shown). Regarding the amplification factor (volume adjustment of the speaker) for the audio signal, the variable resistor 2 provided in the amplifier main body 2
4 is variable, but according to this system, variable operation of the variable resistor 24 (volume adjustment of the speaker) and the like can be remotely controlled from the operation device 1. Hereinafter, a case will be described in which, for example, the variable operation of the variable resistor 24 in the amplifier main body 2 is remotely controlled by the operation device 1 so as to minimize the volume of the speaker (−∞).

That is, the operating device 1 has a central processing unit (hereinafter referred to as CPU) 12, and this CP
An operation command for changing the variable resistor 24 in the amplifier main body 2 is given to the U12 from the operation unit, for example, the keyboard 13, so as to minimize the volume of the speaker. CPU
In accordance with this operation command, the reference numeral 12 outputs control data corresponding to the control instruction, and the control data is output from the remote control terminal 11 via the input / output interface (hereinafter referred to as I / O) 14. The control data output from the remote control terminal 11 is the remote control cable 10
It is transmitted to the amplifier main body 2 through 3 and is supplied into the amplifier main body 2 via the remote control terminal 11 of the amplifier main body 2.

Like the operating device 1, the amplifier main body 2 also has an I / O 25 and a CPU 26 built therein. The control data supplied to the amplifier main body 2 via the remote control terminal 21 is transferred to the C via the I / O 25.
It is input to the PU 26. The CPU 26 varies the variable resistor 24 according to the input control data (specifically, the control data is decoded and based on the decoding result) so as to minimize the volume of the speaker. This minimizes the speaker volume, i.e. provides remote control of speaker volume adjustment.

When the control data is supplied from the operating device 1 side, the CPU 26 in the amplifier main body 2 sends a confirmation signal indicating that the control data is received, to the operating device 1 side in detail. It transmits to CPU12 in 1. The CPU 12 in the operating device 1 receives the confirmation signal, and thus the control data is surely transmitted to the amplifier main body 2
The receiver side confirms that the signal has been received, and after receiving this confirmation signal, prepares to transmit the next control data to the amplifier body 2 side. That is, data is transmitted between the controller device 1 and the amplifier main body 2 by the asynchronous confirmation method (handshake method), thereby improving the reliability of remote control. The CPU in the amplifier body 2
Regarding the confirmation signal output from the controller 26, the operating device 1 is also transmitted via the I / O 25 in the amplifier body 2, the remote control terminal 21, the remote control cable 103, and the remote control terminal 11 and the I / O 14 on the operating device 1 side. Needless to say, the data is supplied to the CPU 12 inside.

Further, the operating device 1 is provided with a display portion, for example, a display (CRT) 15, and when the CPU 12 receives the confirmation signal, a message indicating this is displayed on the display 15. Is configured. As a result, the operator who operates the operating device 1 can confirm that the control data is surely received by the amplifier main body 2 side. In addition,
The operations of the CPUs 12 and 26 described above are controlled based on programs stored in storage units (not shown) provided in the operating device 1 and the amplifier main body 2, respectively,
This storage unit is composed of, for example, a ROM or a RAM.

[0008]

However, in the prior art shown in FIG. 4, since the operating device 1 and the amplifier main body 2 are connected by the dedicated remote control cable 103 as described above, this remote control is performed. To configure the control system, it is necessary to lay the remote control cable 103. Therefore, the work for laying the remote control cable 103 is required, and the cost therefor is also high. Therefore, as the distance between the operating device 1 and the amplifier main body 2 becomes longer, the remote control cable 103 becomes operative and costly. There is a problem that laying becomes difficult.

Further, even when the distance between the operating device 1 and the amplifier main body 2 is not so long as described above,
If either one of the operation device 1 and the amplifier main body 2 is moved to another place, there is a problem that the remote control cable 103 has to be laid again.

Therefore, an object of the present invention is to solve the above problem by connecting the operation device 1 and the amplifier main body 2 by a public telephone line instead of the remote control cable 103.

[0011]

In order to achieve the above object, the invention according to claim 1 of the present invention is an operating device which outputs control data according to an operation command given from the outside, and this operating device. Is connected to an electroacoustic device which is provided at a position away from the device and which is controlled so as to process the audio signal according to the control data and output the processed audio signal to the speaker through a general telephone line. The above-mentioned control data is transmitted via the above.

According to a second aspect of the present invention, in the remote control system for the electroacoustic apparatus according to the first aspect, the electroacoustic apparatus detects a controlled result of the electroacoustic apparatus itself based on the control data. A detection means for outputting a detection signal according to the controlled result; and a detection data output means for outputting detection data corresponding to the detection signal from the remote control terminal and transmitting the detection data to the operation device via the telephone line. The operating device includes an output unit that outputs a controlled result of the electroacoustic apparatus according to the detection data.

That is, the controlled result of the electroacoustic apparatus itself based on the control data transmitted from the operating device can be detected (confirmed) by the output of the output means on the operating device side.

According to a third aspect of the present invention, there is provided the first or second aspect.
The remote control system for an electroacoustic apparatus according to claim 1, wherein the electroacoustic apparatus collects a voice output from the speaker, and a monitor signal output from the microphone via the telephone line. And a monitor signal transmitting means for transmitting the voice signal according to the monitor signal to the monitor speaker. is there.

That is, the sound output from the speaker on the electroacoustic device side can be confirmed (monitored) by the sound output from the monitor speaker on the operating device side.

[0016]

1 is a block diagram of a remote control system for an electroacoustic apparatus according to the present invention.
This will be described with reference to FIG. The system shown in the figure is similar to that of the prior art shown in FIG.
The electroacoustic device, for example, the amplifier main body 2 located at a position distant from the operating device 1 can be remotely controlled. However, the system shown in FIG. 1 uses a general telephone line (also called a public telephone line or a switched line) 3 for connecting the operation device 1 and the amplifier main body 2 to each other. 3 is configured to perform data transmission via the remote control cable 1 and the dedicated remote control cable 1
This is a big difference from the above-mentioned conventional technique using 03.

In the system shown in FIG. 1, in order to enable data transmission using the telephone line 3, the remote control terminals 11 and 21 of the operating device 1 and the amplifier main body 2 are respectively provided. It is connected to the telephone line 3 via modems 31 and 32. Further, the operating device 1 and the amplifier main body 2 are normally in a non-connected state, that is, when the operating device 1 controls the amplifier main body 2, the operating device 1
The amplifier main body 2 (modem 32) is called from, and the above-described control is possible only when the operating device 1 and the amplifier main body 2 are connected to each other. Since the configuration other than this is the same as the above-mentioned conventional technique,
The same parts are designated by the same reference numerals, and detailed description thereof will be omitted.

That is, it is assumed that the operating device 1 and the amplifier main body 2 are not connected to each other. From this state, a case where the operating device 1 remotely controls the variable operation of the variable resistor 24 in the amplifier body 2 so as to minimize the volume of the speaker connected to the amplifier body 2 (−∞) will be described.

First, in the operating device 1, when an operation command to call (dial) the modem 32 on the amplifier body 2 side is given from the keyboard (operation unit) 13 to the CPU 12, the CPU 12 follows the operation command. The modem 32 on the main body 2 side is called. The modem 32 on the amplifier body 2 side sends a signal of a called display (CI) indicating that the call is being made to the CPU 26 in the amplifier body 2.
Then, the CPU 26 prepares for data reception after receiving the called display, and then starts the connection operation with the modem 32. As a result, the modem 32 responds to the call, that is, the operating device 1 and the amplifier main body 2 are connected, and the CPU 12 and the amplifier main body 2 in the operating device 1 are connected.
The data transmission (transmission / reception) to / from the internal CPU 26 is enabled.

Then, in the state where the operating device 1 and the amplifier main body 2 are connected as described above, the keyboard 13 of the operating device 1 instructs the CPU 12 to minimize the volume of the speaker in the amplifier main body 2. An operation command for changing the variable resistor 24 is given. The CPU 12 outputs control data corresponding to this operation command. This control data is output from the remote control terminal 11 via the I / O 14, modulated in the modem 31 (converted into an analog signal), and then the amplifier main body 2 through the telephone line 3.
Transmitted to the side. Then, it is demodulated (converted into a digital signal) by the modem 32 on the amplifier main body 2 side and supplied to the inside of the amplifier main body 2 via the remote control terminal 21.

The control data supplied to the amplifier main body 2 is input to the CPU 26 via the I / O 25. C
The PU 26 varies the variable resistor 24 according to the input control data (specifically, the control data is decoded and based on the decoding result) so as to minimize the volume of the speaker. This minimizes speaker volume,
That is, remote control of the amplifier main body 2 from the operating device 1 via the telephone line 3 is realized.

In the system shown in FIG. 1 as well, similar to the above-mentioned conventional technique, data transmission is performed by the asynchronous confirmation method. That is, the CPU of the amplifier body 2 side
When receiving the control data from the operating device 1 side, the reference numeral 26 transmits a confirmation signal indicating this to the operating device 1 side, and the CPU 12 of the operating device 1 side receives the confirmation signal and then receives the next control data. Is configured to be transmitted to the amplifier body 2 side. Regarding the transmission (transmission / reception) of this confirmation signal, it is also supplied from the CPU 26 on the amplifier body 2 side to the modem 32 via the remote control terminal 21 and the I / O 25, where it is modulated (converted into an analog signal),
After being transmitted to the modem 31 on the operating device 1 side through the telephone line 3 and demodulated (converted into a digital signal) here, C in the operating device 1 is transmitted via the remote control terminal 11 and the I / O 14.
It is supplied to the PU 12. Then, the CPU on the operating device 1 side
When the confirmation signal is received by the receiver 12, a message indicating the confirmation signal is displayed on the display 15, as in the conventional technique.

When terminating the remote control, an operation command to that effect is sent from the keyboard 13 of the operating device 1 to the C command.
By giving to the PU 12, C in the operating device 1
The same data transmission as described above is performed between the PU 12 and the CPU 26 on the side of the amplifier main body 2, whereby the two are disconnected and the remote control is terminated. Note that a program for controlling the calling / called operation between the CPUs 12 and 26 and the remote control (call) end operation is also stored in the storage unit described above.

As described above, according to the first embodiment, the operating device 1 and the amplifier main body 2 are connected by the general telephone line 3, so that the conventional technique shown in FIG. There is no need to lay a dedicated remote control cable 103 in the. Therefore, the system can be easily configured regardless of the distance between the operating device 1 and the amplifier main body 2. Also,
Even when either one of the operating device 1 and the amplifier main body 2 is moved to another place, the system can be easily reconfigured if the telephone line 3 is laid in advance at the place of the movement. it can.

In the first embodiment, the case where the variable resistor 24 for adjusting the volume in the amplifier body 2 is remotely controlled by the operating device 1 has been described, but the present invention is not limited to this, and the tone color adjusting device is not limited to this. This technique may be applied to control of other functions such as controlling the variable resistor of (1) or controlling the ON / OFF operation of the power source of the amplifier main body 2. Also,
This technique may be applied not only to the amplifier main body 2 but also to other electroacoustic devices such as a graphic equalizer and a voice switch.

Further, a plurality of amplifier main bodies (electro-acoustic apparatus) 2 are provided for one operating device 1, and an arbitrary amplifier main body 2 can be called by the one operating device 1 for remote control. You may. On the contrary, a plurality of operating devices 1 may be provided for one amplifier main body 2 so that any one of the operating devices 1 can call the one amplifier main body 2 to perform remote control. Further, a plurality of both the operating device 1 and the amplifier main body 2 may be provided, and the arbitrary amplifier main body 2 may be called from any operating device 1 to be remotely controlled. When a plurality of electro-acoustic devices are provided, not only the amplifier main body 2 but also other devices such as the above-described graphic equalizer and voice switching device may be mixed and provided.

When the operating device 1 calls the amplifier main body 2 (modem 32) and the operating device 1 and the amplifier main body 2 are connected, a message indicating this is displayed.
You may comprise so that it may be displayed on the display 15 of the operating device 1. With this configuration, the operator can display on the display 15 that the operating device 1 and the amplifier main body 2 are in a connected state, that is, the operating device 1 can control the amplifier main body 2. You can check.

In this system, data is transmitted between the controller device 1 and the amplifier main body 2 by the asynchronous confirmation method, but the present invention is not limited to this. For example, a synchronous non-confirmation method in which confirmation signals are not transmitted and received. Data may be transmitted based on another transmission method.

Further, the modems 31 and 32 may be built in the operating device 1 and the amplifier main body 2, respectively.

Next, a second embodiment according to the present invention will be described with reference to FIG. As shown in the figure, in this remote control system, a detector (sensor) 27 is provided for the amplifier main body 2 of the system shown in FIG. The detector 27 detects, for example, the variable state of the variable resistor 24 and outputs a detection signal corresponding to the variable state, and the CPU 26 can read (access) the detection signal. . And C
The PU 26 is configured to transmit detection data corresponding to the detection signal to the operating device 1, and in the operating device 1, the variable state of the variable resistor 24 is displayed on the display 15 according to the detection data. Since the configuration other than this is the same as that shown in FIG. 1, the same portions are denoted by the same reference numerals and detailed description thereof will be omitted.

That is, similar to the above-described first embodiment, for example, the operating device 1 is adapted to minimize the volume of the speaker.
When remotely controlling the variable resistor 24 in the amplifier body 2 from the CPU 26 in the amplifier body 2 that receives the control data transmitted from the operating device 1 side, after variably controlling the variable resistor 24 according to the control data. , The detection signal output from the detector 27 is read. Then, the detection data corresponding to this detection signal is output from the remote control terminal 21 via the I / O 25, that is, the modem 32, the telephone line 3,
It is transmitted to the controller device 1 through the modem 31.

On the side of the operating device 1 that receives this detection data, the above-mentioned detection data is sent to the remote control terminal 11 and I.
It is input to the CPU 12 via / O14. CPU 12
Is the variable state of the variable resistor 24 according to the input detection data (specifically, the detection data is decoded and based on the decoding result), that is, the variable resistor 24 is changed so as to minimize the volume of the speaker. What has been done is displayed on the display 15 by characters or an image (graphic). Therefore, on the operating device 1 side, the variable resistor 2 in the amplifier body 2 is displayed by the display on the display 15.
The controlled result of No. 4 can be confirmed.

The detector 27 provided in the amplifier main body 2 corresponds to the detecting means described in the claims, and the detection data corresponding to the detection signal output from the detector 27 is sent to the operating device 1 side. The CPU 26 configured (programmed) to transmit to the device corresponds to the detection data output means described in the claims. Further, the display 15 on the operating device 1 side and the (programmed) CPU 12 configured to display a character or an image corresponding to the detection data on the display 15 are output means described in claims. Corresponding to.

As described above, according to the second embodiment, the controlled result of the amplifier main body 2 can be grasped on the operating device 1 side, so that the reliability of the remote control in this system is as described above. There is an effect that it is improved as compared with the case of only the asynchronous confirmation method. In particular, when the distance between the operating device 1 and the amplifier main body 2 is long, it is difficult for the operator to actually visually check the controlled state of the amplifier main body 2, so that the above-mentioned effect is very great. It is valid.

In the second embodiment, only the detector 27 for detecting the variable state of the variable resistor 24 in the amplifier body 2 has been described, but the present invention is not limited to this, and for example, a variable for tone color adjustment. A detector for detecting a resistor, a detector for detecting ON / OFF operation of the power supply of the amplifier main body 2, and the like are provided, and a message corresponding to the output of these detectors is displayed on the display 15 on the operating device 1 side. It may be configured as follows. Further, the present invention is not limited to this display 15, and a simple indicator such as an LED or a pilot lamp may be used to indicate the controlled state of the amplifier body 2.

Further, instead of using the display (visible) means such as the display 15 to represent the controlled state of the amplifier main body 2, for example, a speaker is used, and the amplifier main body is output by the sound output from the speaker. It may be configured to represent two controlled states.

The system shown in FIG. 3 is a third embodiment according to the present invention.
FIG. This system is the system shown in FIG. 2 described above (the system of the second embodiment).
In the above, the audio output from the speaker 41 connected to the amplifier main body 2 can be heard (monitored) on the operating device 1 side.

That is, in this system, a microphone amplifier 43 for collecting (monitoring) the voice of the speaker 41 by the microphone 42 and amplifying a so-called monitor signal output from the microphone 42 to a predetermined level is provided. There is. The monitor signal amplified by the microphone amplifier 43 is coupled to the telephone line 3 by the coupler 44.

The coupler 44 is arranged between the remote control terminal 21 of the amplifier body 2 and the modem 32, and encodes (digitizes) the monitor signal supplied via the microphone amplifier 43. This coded monitor signal is time-division multiplexed with the detection data output from the CPU 26 in the amplifier body 2 described above, and this is multiplexed into the modem 32.
Is configured to supply. And the modem 32
Modulates the data supplied from the combiner 44 (converts it into an analog signal), and then transmits this to the modem 31 on the operating device 1 side through the telephone line 3. The coupler 44
The above-mentioned monitor signal is based on a voice data compression technique that is generally widely used when encoding the monitor signal (a compression technique for suppressing data quality deterioration due to quantization noise in voice data transmission). Is compressed and the compressed monitor signal is encoded.

On the other hand, on the operating device 1 side, a distributor 51 is provided between the remote control terminal 11 and the modem 31, and the data transmitted from the modem 31 on the amplifier body 2 side is the modem 31. Demodulated (digitalized)
Then, it is supplied to the distributor 51. Distributor 51
Separates the data supplied from the modem 31 into the above-mentioned detection data and an encoded monitor signal, of which the detection data is inputted via the remote control terminal 11 to the operating device 1.
Supply within. On the other hand, the monitor signal is converted into an analog signal, and the monitor signal converted into the analog signal is based on the decompression technique having characteristics completely opposite to the compression technique in the coupler 44 on the amplifier body 2 side. After the extension, it is configured to be supplied to the monitor speaker 53 via the power amplifier 52. The monitor speaker 53 is provided in the vicinity of the operating device 1 and outputs sound by supplying the monitor signal.

The coupler 44 in the third embodiment corresponds to the monitor signal transmitting means described in the claims. Further, the configuration including the distributor 51, the power amplifier 52, and the monitor speaker 53 on the operating device 1 side corresponds to the monitor means described in the claims.

As described above, according to the third embodiment, since the voice output from the speaker 41 on the amplifier body 2 side can be heard (monitored) on the operating device 1 side, the amplifier can be used. Not only is the main body 2 controlled reliably, but also the sound according to the control is surely controlled by the speaker 4
It is possible to confirm whether the data is output from 1, that is, whether the amplifier body 2 is operating normally. Therefore, the reliability of the remote control system is much higher than that of the systems according to the first and second embodiments described above. Further, since the operator who operates the operating device 1 can feel the presence on the amplifier main body 2 side while being on the operating device 1 side, the operability of the operating device 1 is further improved.

Although the microphone amplifier 43 for amplifying the monitor signal output from the microphone 42 is provided in the third embodiment, this microphone is used when it is not particularly necessary to amplify the monitor signal. The amplifier 43 may not be provided. Similarly, a power amplifier 52 for amplifying a monitor signal distributed by the distributor 51 is also provided on the operating device 1 side, but this is also provided when it is not particularly necessary to amplify the monitor signal. You don't have to.

In this embodiment, the amplifier body 2
On the side, the combiner 44 encodes the monitor signal,
The encoded monitor signal and the detection data are time-division multiplexed and transmitted to the operation device 1 side. At the operation device 1 side, the data transmitted from the amplifier main body 2 side is detected by the distributor 51 as the detection data. Although it is configured to be separated from the monitor signal, the present invention is not limited to this and may be configured as follows, for example.

That is, on the amplifier body 2 side, the coupler 44 always detects whether or not the detection data is output from the CPU 26 in the amplifier body 2. Then, when the detection data is output, the detection data is transmitted to the operation device 1 side, and when the detection data is not output, the monitor signal from the microphone 42 is transmitted to the operation device 1 side. The container 44 is configured.
When transmitting the monitor signal, the signal converted into the digital signal in the coupler 44 may be transmitted in the same manner as described above, or the analog signal may be used as it is without being converted into the digital signal. May be configured to be transmitted.

On the other hand, on the operating device 1 side, the distributor 5
1 identifies whether the data transmitted from the amplifier main body 2 side is detection data or a monitor signal. If the data is detection data, it is supplied to the operating device 1, and if it is a monitor signal, it is supplied to the monitor speaker 53 via the power amplifier 52. 51 is configured.

With this configuration, except when the CPU 26 in the amplifier body 2 is outputting the detection data, that is, except when the amplifier body 2 is remotely controlled from the operating device 1, the operating device 1 side is provided. The sound output from the speaker 41 on the amplifier body 2 side can be heard (monitored) by the monitor speaker 53.

[0048]

According to the invention described in claim 1, the operating device and the electroacoustic device are connected by a general telephone line.
Therefore, unlike the prior art shown in FIG. 4 described above, it is not necessary to lay a dedicated remote control cable 103,
The system can be easily configured regardless of the distance between the operating device and the electroacoustic device. In addition, even when either one of the operating device and the electro-acoustic device is moved to another place, it is easy to move the device and move the system as long as a telephone line is laid in advance at the destination place. The effect is that it can be configured.

According to the second aspect of the invention, the control result of the electroacoustic apparatus itself based on the control data transmitted from the operating device can be confirmed on the operating device side. That is, since the controlled result of the electroacoustic apparatus can be grasped on the operation device side, the reliability of the remote control in this system is further improved as compared with the case of only the asynchronous confirmation method in the above-mentioned conventional technique. There is.
In particular, when the distance between the operating device and the electroacoustic device is long, it is difficult for the operator who operates the operating device to actually check the controlled state of the electroacoustic device with his / her own eyes. As such, this effect is very effective.

According to the third aspect of the present invention, the sound output from the speaker on the electroacoustic device side can be monitored by the monitor speaker on the operating device side.
That is, not only is the electroacoustic device reliably controlled, but it is possible to confirm on the operation device side whether or not the sound as controlled is surely output from the speaker,
That is, the operating state of the electroacoustic device can be confirmed on the operating device side. Therefore, there is an effect that the reliability as the remote control system is improved as compared with the first or second invention. Further, since the operator who operates the operating device can experience the realism on the electroacoustic device side while staying on the operating device side, the first or second operation is possible.
There is also an effect that the operating device can be operated more easily than the invention of.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a first embodiment of a remote control system for an electroacoustic apparatus according to the present invention.

FIG. 2 is a schematic configuration diagram showing a second embodiment according to the present invention.

FIG. 3 is a schematic configuration diagram showing a third embodiment according to the present invention.

FIG. 4 is a schematic configuration diagram showing an example of a conventional remote control system for an electroacoustic apparatus.

[Explanation of symbols]

 1 Operation Device 2 Amplifier Main Body (Electroacoustic Device) 3 Public Telephone Line 11, 21 Remote Control Terminal 12, 26 Central Processing Unit (CPU) 13 Keyboard (Operation Unit) 14, 25 Input / Output Interface (I / O) 15 Display (Display) 22 buffer amplifier 23 power amplifier 24 variable resistor 31, 32 modem

Claims (3)

[Claims] 1. An operating device for outputting control data according to an operation command given from the outside, a telephone line for transmitting the control data, and a remote connected to the telephone line provided at a position distant from the operating device. An electro-acoustic device having a control terminal, the sound signal being processed according to the control data supplied via the remote control terminal, and being controlled to output the processed sound signal to a speaker. Remote control system for electro-acoustic equipment. 2. The remote control system for an electroacoustic apparatus according to claim 1, wherein the electroacoustic apparatus detects a controlled result of the electroacoustic apparatus itself based on the control data and detects the controlled result. The operating device includes: a detecting device that outputs a signal; and a detecting data output device that outputs the detecting data corresponding to the detecting signal from the remote control terminal and transmits the detecting data to the operating device through the telephone line. A remote control system for an electroacoustic apparatus, comprising: an output unit that outputs a controlled result of the electroacoustic apparatus according to detection data. 3. The remote control system for an electroacoustic apparatus according to claim 1, wherein the electroacoustic apparatus collects a sound output from the speaker, and a monitor signal output from the microphone. And a monitor signal transmitting means for transmitting to the operating device via the telephone line, wherein the operating device detects the monitor signal and outputs monitor sound corresponding to the monitor signal from a monitor speaker. A remote control system for an electro-acoustic apparatus, comprising: