JP3522446B2 - Fader control device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fader control device for operating a slider by prerecording and reproducing the operation of a slider of a fader in an audio device.

[0002]

2. Description of the Related Art Conventionally, a fader control device of this type is known as shown in FIG. FIG. 5 is a block diagram showing the configuration of an example of such a conventional fader control device. Hereinafter, as an example, a configuration of a conventional fader control device will be described with reference to FIG.

In FIG. 5, reference numeral 1 denotes a position data indicating the position of the slider of the fader, which is preliminarily written in a time series so as to be read and used as time elapses.
When the recording medium 2 composed of a writable ROM or the like compares the slider position data from the position detecting means 5 indicating the position where the slider has slid and the position data from the recording medium 1 and they match each other. The match detection means 3 displayed on the display means 3 indicates a match between the slider position data and the position data from the recording medium 1, and the match display means 4 indicates the sliding of the fader 6 based on the position data from the recording medium 1. Fader control means 5 for driving the child is a position detecting means for detecting the position of the slider and outputting the slider position data.

Further, 6 is provided with a slider of a variable resistor and a driving means thereof, and outputs the slider position data based on the position of the slider by automatically or manually driving the slider. , A fader adapted to adjust the volume of the reproduced sound by the slider position data in the audio signal processing means 7, 7 is an audio signal processing means for adjusting the volume of the audio signal, and 8 is manually operated by an operator. Operation means for switching the / automatic changeover switches 9 and 10, and 9 and 10 are manual / automatic changeover switches for switching the fader control device between the manual mode and the automatic mode.

Next, with reference to FIG. 5 as well, the operation of the conventional fader control device configured as described above will be described. First, when the operator operates the operation means 8, the contacts of the manual / automatic changeover switches 9 and 10 are simultaneously switched, and the manual control mode is set on the manual side and the automatic control mode is set on the automatic side.

In the manual control mode, since the manual / automatic changeover switch 9 is open, the position data recorded on the recording medium 1 is not input to the fader control means 4 and the slider of the fader 6 is not automatically controlled. . On the other hand, the position of the slider of the fader 6 is detected by the position detecting means 5, and the position detecting means 5 outputs the slider position data at that time. The slider position data is input to the audio signal processing means 7 via the manual / automatic changeover switch 10. Therefore, the operator can adjust the volume of the reproduced sound by manually adjusting the slider of the fader 6 to a desired position.

In the automatic control mode, the position data recorded on the recording medium 1 is input to the fader control means 4.
The fader control means 4 drives the slider of the fader 6 according to the input position data to reproduce the recorded slider position. At the same time, the position data recorded on the recording medium 1 is input to the audio signal processing means 7, and the volume of the reproduced sound is automatically adjusted according to the position data.

In either mode, the coincidence detecting means 2 compares the current position of the slider output by the position detecting means 5 with the position data output from the recording medium 1, and if the two coincide, the display means 3 To drive. As a result, the operation is performed to notify the operator that the two match.

[0009]

However, in the conventional fader control device as described above, regardless of where the slider of the fader is located, the position data or the slide data input to the audio signal processing means is irrelevant. Since the child position data is completely switched by switching the manual / automatic changeover switch, noise due to sudden volume changes must be prevented when returning to automatic control after a temporary manual operation during automatic control. Therefore, the operator has to perform a complicated operation that the operator has to manually operate the slider while watching the display of the matching display means to match the matching position and then perform the mode switching by the manual / automatic changeover switch. There was a problem that had to be.

Further, in this case, if an attempt is made to increase the matching accuracy by narrowing the matching determination window or the like, the returning operation becomes extremely difficult, and the matching accuracy and the operability cannot be made compatible. On the other hand, when the position data read from the recording medium changes from time to time,
There is a problem that such a returning operation is almost impossible.

The present invention has been made to solve the above-mentioned conventional problems, and it is possible to automatically return to the operation of the automatic control mode without generating noise due to a sudden change in volume. It is an object of the present invention to provide a fader control device capable of automatically returning to position data from a recording medium that changes in time series, by improving easiness of operation and position accuracy at the time of returning to the automatic control mode at the same time. .

[0012]

A fader control device according to the present invention comprises, as a first means, an integrator connected to an output of a recording medium, between an output of the integrator and an input of an audio signal processing means, and A non-match / match switch that is controlled by the match detection means is provided between the output of the integrator and the input of the fader control means, and the position data output of the recording medium when the manual control mode is switched to the automatic control mode is performed. Is input to the audio signal processing means and the fader control means through an integrator, and when the slider moves and the recording medium position data and the slider position data match, the recording medium position data is directly converted into an audio signal. It is adapted to be inputted to the processing means and the control means of the fader.

According to the present invention, the difference between the position data of the recording medium and the slider position data, which occurs when returning from the manual control to the automatic control, is gradually reduced by the integration process so that the two position data are matched. By thus preventing the sudden change of the position data, it is possible to obtain a fader control device capable of automatically performing a highly accurate return operation without generating noise.

The fader control device according to the present invention is
As the second means, the operating means of the manual / automatic changeover switch is also used as the slider of the fader, and the operation detecting means for detecting the presence or absence of the operation by the slider is provided, and when the operation by the slider is detected. The manual / automatic changeover switch is switched to the manual control mode, and when the operation by the slider is not detected, the automatic control mode is restored.

According to the present invention, since the manual control mode is automatically set only while the operator touches the slider of the fader to operate it, no special manual / automatic switching operation is required and the operability is remarkably improved. It is possible to obtain a fader control device that is improved to.

Further, the fader control device according to the present invention is
As the third means, the operating means of the manual / automatic changeover switch is also used as the slider of the fader, and the operation detecting means for detecting the presence / absence of operation by the slider is provided, and a switch or the like is provided separately from the slider. A control mode is provided so that only the switching from the automatic control mode to the manual control mode is performed by the slider, and only the switching when returning from the manual control mode to the automatic control mode is performed by the operating means such as a switch. The switching function of is divided.

According to the present invention, when troubles such as howling or dropping of a microphone occur, the control can be immediately switched to the manual control by touching the slider, and during the trouble occurrence, the manual control mode can be performed without touching the slider. Since it is confirmed that the cause of the trouble has been eliminated and the automatic control mode can be switched over again, the fader control device that enables safer and more reliable operation in the event of a sudden manual intervention. Can be obtained.

The fader control device according to the present invention is
As a fourth means, an integration constant varying means such as a variable resistor is provided for the integrator, and the integration constant is changed to a desired value by operating the integration constant varying means.

According to the present invention, when the automatic control mode is restored after the intervention of the manual operation, the optimal time constant for each situation is adjusted according to the purpose of the intervention, the type of the sound source, and the sounding situation. It is possible to obtain a fader control device capable of

[0020]

DETAILED DESCRIPTION OF THE INVENTION According to a first aspect of the present invention includes a fader provided with a slider and driving means, and a recording medium which holds the position data of the <br/> fader, the position and control means fader for controlling the drive position of the slider of the fader in accordance with the data, a position detecting means for detecting a position of the slider of the fader, manual / automatic switching for switching between manual control mode and the automatic control mode Switch and the manual /
And operating means for operating the automatic changeover switch, and match detection means for detecting whether matches or non-matches by comparing the position data and the slider position data from said recording medium, said matching detection
The display means for displaying the result of the output means and the audio signal level
A fader controller with the audio signal processing means for adjusting the sound volume corresponding to the position data, and means for gently changing toward the position data from the recording medium to the slider position data, the position If data and said slider position data of disagreement through said means for slowly changing the position data from the recording medium the signal switching means for connecting the output to the control unit and the audio signal processing means of the fader with the door, said control means of said fader through means and said position data and said slider position data is the gradual change in the case of non-matching the location data when the fader control is switched to the automatic control mode the sound <br/> voice signal processing connected to the unit, control of directly the fader the position data if said position data and said slider position data is consistent with It is obtained by so as to supply the the unit to the audio signal processing unit, by performing the processing to mitigate an abrupt change in the position data occurs when returning from the manual control mode to the automatic control mode, to generate a noise It has an effect that a highly accurate return operation can be automatically performed without any trouble.

According to a second aspect of the present invention, the means for gently changing is an integrator, and the signal switching means is a non-matching / matching changeover switch. The manual control mode is automatically controlled. By integrating the abrupt change of the position data that occurs when returning to the mode, there is an effect that a highly accurate return operation can be automatically performed without generating noise.

According to a third aspect of the present invention, the operating means for operating the manual / automatic changeover switch is a slider of the fader, and the fader control device includes operation detecting means for detecting an operation of the operating means. The manual / automatic changeover switch and the match detecting means are controlled by detecting / non-detecting the operation of the operating means by the operation detecting means, and the operator touches the slider of the fader. Since the manual control mode is automatically set only during the operation, a special manual / automatic switching operation is not required and the operability is significantly improved.

According to a fourth aspect of the present invention, a resetting means is connected to the operation detecting means, and when the operation detecting means detects an operation of the operating means, the operation control means is switched to a manual control mode, and an automatic control mode is set. The switching to the control means is performed by operating the resetting means.For example, when a trouble such as howling or dropping of a microphone occurs, the slider can be touched to immediately switch to the manual control mode. Will continue in manual control mode without touching the slider, and will switch to automatic control again after confirming that the cause of the trouble has been eliminated.
This has the effect of enabling a quicker, safer and more reliable operation in the event of a sudden manual intervention.

According to a fifth aspect of the present invention, an integration constant varying means is connected to the integrator, and an integration constant of the integrator is changed to change a period in which the position data is matched with the slider position data. When returning to the automatic control mode after manual intervention, it is possible to adjust to the optimum time constant according to the purpose of the intervention, the type of sound source, and the pronunciation status. Has the effect of becoming.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and FIGS. 1 to 4. FIG. 1 is a block diagram showing a configuration of a fader control device according to a first embodiment of the present invention, FIG. 2 is a block diagram showing a configuration of a fader control device according to a second embodiment of the present invention, and FIG. FIG. 4 is a block diagram showing a configuration of a fader control device according to a third embodiment of the invention, and FIG. 4 is a block diagram showing a configuration of a fader control device according to a fourth embodiment of the present invention.

First, the configuration of a fader control device according to the first embodiment of the present invention will be described with reference to FIG. In FIG. 1, reference numeral 1 is a recording medium, such as a writable ROM, in which position data indicating the position of a slider of a fader is preliminarily written in time series so as to be read and used over time. The match detecting means 3 for displaying on the display means 3 when the slider position data from the position detecting means 5 indicating the position where the slider has slid and the position data from the recording medium 1 are compared and matched, It is a display means for displaying a match between the slider position data and the position data from the recording medium 1. Here, the position data represents the position of the slider of the fader 1 and means data for adjusting the audio signal level in the audio signal processing means 7 to a corresponding volume.

Further, 4 is a fader control means for driving the slider of the fader 6 based on the position data from the recording medium 1, and 5 is a position detection for detecting the position of the slider and outputting the slider position data. The means 6 includes a slider of a variable resistor and a driving means thereof, and outputs the slider position data based on the position of the slider by automatically driving or manually driving the slider, and an audio signal. A fader for adjusting the volume of the reproduced sound by the slider position data in the processing means 7,
Is a voice signal processing means for adjusting the volume of a voice signal, and 8 is an operating means for operating the manual / automatic changeover switches 9 and 10 by an operator.

Further, 9 and 10 are manual / automatic changeover switches for switching the fader control device between the manual mode and the automatic mode, and 11 and 12 have non-matching contacts and matching contacts, and are controlled by the matching detecting means. A non-matching / matching changeover switch that is connected to the non-matching contact side when the position data of the recording medium and the slider position data do not match and is connected to the matching contact side when they match, 13 is the non-matching This is an integrator which is controlled by the / match changeover switches 11 and 12 to integrate the position data of the recording medium and output the result to the audio signal processing means 7 and the fader control means 4 only when they do not match.

Next, referring to FIG. 1 as well, the operation of the fader control device according to the first embodiment of the present invention configured as described above will be described. In the following, the terms non-match and match mean non-match and match between the position data of the recording medium and the slider position data from the position detecting means 5.

First, when the operator operates the operating means 8, the contacts of the manual / automatic changeover switches 9 and 10 are switched at the same time. When the manual side is connected, the manual control mode is set, and when the automatic side is connected. The automatic control mode is set. At the same time, the output of the operating means 8 is input to the match detecting means 2. As a result, in the manual control mode, the non-matching / matching changeover switches 11 and 12 are fixed to the matching side regardless of the match detection result. On the other hand, in the automatic control mode, the non-match / match switch 1 is determined by the result of match detection by the match detection means 2.
Both contacts 1 and 12 are switched at the same time, and if they match, they are connected to the matching side, and if they do not match, they are connected to the non-matching side.

In the manual control mode, the position data read from the recording medium 1 is not input to the fader control means 4 because the manual / automatic changeover switch 9 is turned off, and the slider of the fader 6 is automatically controlled. Not done. Further, in the manual control mode, since the non-match / match switch 12 is connected to the match side, the output of the position detecting means 5,
That is, the slider position data is directly transferred to the audio signal processing means 7
And the operator manually adjusts the position of the slider of the fader 6 to adjust the volume of the reproduced sound.

In the automatic control mode, the non-matching / matching changeover switches 11 and 1 are detected according to the detection result of the match detecting means 2.
The operation of 2 is different. When the detection result of the match detecting means 2 is non-match, the contacts of the non-match / match changeover switches 11 and 12 are connected to the non-match side, and the position data recorded and read on the recording medium 1 is changed to non-match / match. Fader control means 4 passing through the non-matching contact of the switch 11 and the integrator 13
Entered in. The fader control means 4 drives the slider of the fader 6 by the position data integrated according to the time constant of the integrator 13 with the recorded and read position data as the target. At the same time, the integrated position data is input to the audio signal processing means 7, and the volume of the reproduced sound is gradually changed according to the time constant of the integrator 13 with the volume corresponding to the recorded position data as a target.

In this way, the values of the slider position data from the position detecting means 5 and the position data recorded on the recording medium 1 approach each other, and the predetermined time determined by the integration constant of the integrator 13 elapses. After doing, it reaches a match. When the detection result of the match detecting means 2 becomes a match, the contacts of the non-match / match changing switches 11 and 12 are connected to the match side, and the position data recorded on the recording medium 1 is directly input to the control means 4 of the fader. . The fader control means 4 drives the slider of the fader 6 according to the position data to reproduce the position according to the recorded position data. At the same time, the position data recorded on the recording medium 1 is directly input to the audio signal processing means 7 through the matching contact of the non-match / match switch 11, and the volume of the reproduced sound is adjusted so as to correspond to the volume corresponding to the position data. It

In either mode, the coincidence detecting means 2 compares the slider position data output by the position detecting means 5 and indicating the current position of the slider with the position data output by the recording medium 1. , The display means 3 is driven when the two match. By this, the operator knows that both position data match.

The operation means 8 and the manual / automatic changeover switches 9 and 10 are, for example, multi-circuit interlocking switches,
It is also possible to realize all at once. In addition to the manual / automatic changeover switches 9 and 10, the switching means such as the non-matching / matching changeover switches 11 and 12 may be realized by using, for example, a relay, or by using a semiconductor device such as a photoMOS or an analog switch. . Further, the output of the fader control means 4 is connected to the D / A converter and the position detection means 5.
Is equipped with an A / D converter at the input of, and means other than means for operating and displaying, and in particular, the integrator 13 means for gently changing the position data from the recording medium toward the slider position data. Can also be realized by software, and all other means can also be realized by software as a digital system.

As described above, according to the present embodiment, the difference between the position data of the recording medium and the slider position data, which occurs when returning from the manual control to the automatic control, is gradually reduced by the integration process. By making both position data coincide with each other and preventing abrupt changes in position data, a fader control device capable of automatically performing a highly accurate return operation without generating noise is obtained. be able to.

Next, with reference to FIG. 2, the configuration of the fader control device according to the second embodiment of the present invention will be described. 2, the components having the same reference numerals and the same names as those in FIG. 1 are the same as those in FIG. 1, and therefore a more detailed description will be omitted. Reference numeral 14 is an operation detection that detects manual contact with the slider of the fader 6 and informs the manual / automatic changeover switches 9 and 10 and the match detection means 2 that manual operation is to be performed, and returns to the automatic control mode when the manual contact is released. It is a means.

The operation of the fader control device according to the second embodiment of the present invention configured as described above will be described with reference to FIG. Operation detecting means 14
In this embodiment, for example, a capacitance detection circuit using the slider itself of the fader 6 as an input terminal is used, but any other electrical or mechanical means may be used. manual/
The contacts of the automatic changeover switches 9 and 10 are simultaneously changed over by the control of the output of the operation detecting means 14, and the fader 6
When you touch and operate the slider, it is automatically connected to the manual side and enters the manual control mode. When you stop operating the fader 6 and release your hand from the slider, it is automatically connected to the automatic side and automatically controls mode. Becomes

The operation in each mode of the fader control device according to the second embodiment of the present invention and other operations are the same as in the case of the above-mentioned first embodiment, and therefore a repetitive description will be omitted.

The operation detecting means 14 may use any other electric or mechanical means other than the above, for example, a small switch built in a knob attached to the slider, The output may be controlled by manual contact.

As described above, according to the present embodiment, the manual control mode is automatically set only while the operator touches and operates the slider of the fader, so that a special manual / automatic switching operation can be performed. It becomes unnecessary and the operability is remarkably improved.

Next, with reference to FIG. 3, the configuration of the fader control device according to the third embodiment of the present invention will be described. In FIG. 3, the components having the same reference numerals and the same names as those in FIG. 1 are the same as those in FIG. Reference numeral 14 is an operation detection means similar to that in the second embodiment, and reference numeral 15 is a return switch for generating an output for returning the manual control mode to the automatic control mode from the operation detection means 14 by operating.

Next, with reference to FIG. 3 as well, the operation of the fader control device according to the third embodiment of the present invention configured as described above will be described. The contacts of the manual / automatic changeover switches 9 and 10 are simultaneously switched by the control of the output of the operation detecting means 14, and when the slider of the fader 6 is touched and operated, it is automatically connected to the manual side and the manual control mode is set. However, even if the fader 6 is stopped and the hand is released, the manual control mode is continued.

That is, the operation detecting means 14 manually /
The contact switching of the automatic changeover switches 9 and 10 works only when the automatic control mode is changed to the manual control mode, and the return switch 15 must be operated when the manual control mode is changed to the automatic control mode. Return switch 1
5 may use, for example, a mechanical switch, an electric switch such as a touch panel or an LED,
It is a generic term for return means. By operating the return switch 15, the contacts of the manual / automatic changeover switches 9 and 10 are connected to the automatic side, and the automatic control mode is set.

The operation and other operations in each mode of the fader control device according to the third embodiment of the present invention are the same as in the case of the above-mentioned first embodiment, and therefore their repetitive description will be omitted.

In this embodiment, the operation detecting means 14 uses a capacitance detecting circuit having the slider itself of the fader 6 as an input terminal, but any other electrical or mechanical means is used. Alternatively, for example, a small switch incorporated in a knob attached to the slider may be used to control the output by manual contact.

As described above, according to the present embodiment, when a trouble such as howling or dropping of a microphone occurs, the manual control mode can be immediately switched to by simply touching the slider, and the trouble can be prevented. During the occurrence, the manual control mode can be continued without touching the slider, and it can be switched to the automatic control mode again after confirming that the cause of the trouble has been eliminated. It can be operated more quickly, safely and surely.

Next, with reference to FIG. 4, the configuration of the fader control device according to the fourth embodiment of the present invention will be described. 4, the components having the same reference numerals and the same names as those in FIG. 1 are the same as those in FIG. 1, and therefore a more detailed description will be omitted. 16 is connected to the integrator 13 and the integrator 1
It is an integral constant varying means capable of changing the time constant of 3 to a desired value.

The operation of the fader control device according to the fourth embodiment of the present invention configured as described above will be described with reference to FIG. As the integration constant varying means 16, for example, a variable resistor is used as an example.
The time constant of the response to the matching control is determined according to the resistance value of the variable resistor.

The operation in each mode of the fader control device in the fourth embodiment of the present invention and the other operations are the same as in the case of the first embodiment, and therefore the repetitive description will be omitted. In addition, the integration constant changing means 16
Can be realized by combining not only the variable resistor but also a plurality of fixed resistors, capacitors, switches and the like. In addition to the change in the physical constant of RC, the integrator 13 is realized by a digital circuit and the integration constant changing means 16
May be executed by software.

As described above, according to the present embodiment, when returning to the automatic control mode after the manual intervention, each situation is changed depending on the purpose of the intervention, the type of the sound source, and the sounding situation. It becomes possible to adjust to an optimum time constant.

[0052]

The multiplex method according to the present invention is configured as described above, and in particular, the rapid change in the position data that occurs when returning from the manual control mode to the automatic control mode is integrated. In order to prevent noise, the automatic control mode can be set by easily and automatically performing high-precision alignment without generating noise without performing difficult and low-precision alignment that was conventionally performed manually. It is possible to restore it. Furthermore, it is possible to automatically restore position data that changes momentarily in time series, which has been impossible in the past.

Further, the multiplexing method according to the present invention is constructed as described above, and in particular, the manual control mode is automatically set only while the operator touches and operates the slider of the fader. Therefore, in the past, when performing manual intervention, first operating the operating means (changeover switch) and then manually operating the slider to return to the automatic control mode, the operator manually operates the slider while watching the matching display. A series of complicated operations for aligning the positions and operating the operating means are not necessary at all, and the operability is remarkably improved.

Further, the multiplexing method according to the present invention is constructed as described above, and in particular, when troubles such as howling or dropping of a microphone occur, conventionally, manual operation cannot be performed without operating the operating means. However, it was confirmed that touching the slider immediately switched to manual control, and during trouble, the manual control mode was continued without touching the slider, eliminating the cause of the trouble. Since it is possible to switch to the automatic control mode again, it is possible to obtain a fader control device capable of safer and more reliable operation in the event of a sudden manual intervention when a serious trouble of unclear recovery occurs. .

Further, the multiplexing method according to the present invention is configured as described above, and particularly when returning to the automatic control mode after the manual intervention, depending on the purpose of the intervention, the type of the sound source, and the pronunciation condition, A fader control device that can adjust to the optimum time constant for each situation at a speed that is not possible with conventional manual alignment, and that enables smooth and highly accurate recovery that is impossible with the conventional method. Can be obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a fader control device according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a fader control device according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a fader control device according to a third embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a fader control device according to a fourth embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration of an example of a conventional fader control device.

[Explanation of symbols]

1 recording medium 2 Match detection means 3 display means 4 Control means 5 Position detection means 6 faders 7 Audio signal processing means 8 means of operation 9 Manual / automatic changeover switch 10 Manual / automatic changeover switch 11 Non-matching / matching switch 12 Non-match / match switch 13 Integrator 14 Operation detection means 15 Return switch 16 Integral constant changing means

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Claims (5)

(57) [Claims] And 1. A slider and fader with its driving means, a recording medium that holds the position data of the fader,
Manual switching and control means fader for controlling the drive position of the slider of the fader in accordance with the position data, a position detecting means for detecting a position of the slider of the fader, and a manual control mode and the automatic control mode / An automatic changeover switch,
And operating means for operating the該手dynamic / automatic selector switch, a match detecting means for detecting whether the position data and the matching or non-matching by comparing the slider position data from the <br/> recording medium, before
Display means for displaying the result of the coincidence detection means , and voice for adjusting the voice signal level to the volume corresponding to the position data.
A fader controller with a signal processing unit, said means for slowly changing the position data from the recording medium toward the slider position data, the position data and the slider position data and non and a signal switching means for connecting through the output means for the gradual change the position data from the case of matching the recording medium to the control unit and the audio signal processing means of the fader, the automatic said fader control connected to said audio signal processing means and the control means of the fader through means and said position data and said slider position data is the gradual change when the position data of disagreement when switched to the control mode, to supply the position data if said position data and said slider position data matches the control means direct the fader and the audio signal processing means Fader control, characterized in that the. 2. The fader control device according to claim 1, wherein the gradual change means is an integrator, and the signal switching means is a non-match / match change switch. 3. The operation means for operating the manual / automatic changeover switch comprises a slider of the fader, and the fader control device comprises operation detection means for detecting the operation of the operation means, and the operation detection means. 3. The fader control device according to claim 1, wherein the manual / automatic changeover switch and the coincidence detecting means are controlled by detecting / non-detecting the operation of the operating means by. 4. The operation detecting means is connected to a returning means, and when the operation detecting means detects an operation of the operating means, the operation is switched to a manual control mode, and the automatic control mode is switched to the returning means. The fader control device according to claim 3, wherein the fader control device is performed by the operation of. 5. An integrator constant variable means is connected to the integrator, and an integration constant of the integrator is changed to change a period for matching the position data with the slider position data. The fader control device according to claim 2, 3 or 4.