JPH05291839A - Audio mixer device - Google Patents

Abstract

PURPOSE:To obtain a proper level simply and quickly by adjusting a level of audio information at a master fader whose level is adjusted by a channel fader and subject to variable control by a cross fader. CONSTITUTION:A channel fader 5 is provided to adjust a level balance of audio data for each channel and to adjust a level balance between VTRs, and the user adjusts the level balance of audio data among channels or the like by adjusting the channel fader 5. Then, each of audio data outputted from each cross fader 12 is fed respectively to a master fader 13 and the user uses the master fader 13 to adjust an output level of each of the audio data. Then, the level of the audio data adjusted by the channel fader 5 and subject to variable control to attain a desired mixing ratio by the cross fader 12 in this way is adjusted by the master fader 13 and the result is outputted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio mixer device for editing audio information which is separately supplied to a plurality of channels.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, for example, an audio mixer device is known which edits audio information supplied by being divided into a plurality of channels. The audio mixer apparatus shown in FIG. 5 edits audio information supplied in 6 channels and outputs audio information in 1 channel. Six channel faders 107 to 112, and first to sixth information lines 113 to 118 connected to the output terminals of the first to sixth channel faders 107 to 112, respectively.
A first bus line 131 connected to the first to sixth information lines 113 to 118, and a second bus line 132 also connected to the first to sixth information lines 113 to 118. , The above first to sixth information lines 11
3 to 118 and first to sixth selection switches 119 to 119 respectively provided at connection points of the first bus line 131.
124 and the first to sixth information lines 113 to 118
And seventh to twelfth selection switches 125 to 130 provided at connection points of the second bus line 132, respectively.
And a cross fader 133 that outputs the audio information supplied via the first and second bus lines 131 and 132 after performing cross fade processing described later.

In the conventional audio mixer device having such a configuration, for example, first and second video tape recorder devices (not shown) for inputting / outputting audio information in 3 channels and inputting audio information in 1 channel. A third video tape recorder device (not shown) that outputs is connected to the audio mixer device as an external device, and the audio information output from the first and second video tape recorder devices is output to the audio device. When the audio information edited by the mixer device is recorded and the edited audio information is recorded by the third video tape recorder device, the 3-channel audio information output from the first video tape recorder device is the audio information of the third channel of the audio mixer device. 1st to 3rd channel input terminals 101 to 1
03 through the above-mentioned first to third channel faders 10
7 to 109, and the audio information of 3 channels output from the second video tape recorder device is input to the 4th to 6th input terminals 104 to 106 of the audio mixer device. It is supplied to the sixth channel faders 110-112.

The above first to sixth channel faders 10
7 to 112 are provided with variable resistors, and the gain of the audio information can be varied by variably adjusting the variable resistors. The user variably adjusts the variable resistances of the first to third channel faders 107 to 109 to adjust the level of the audio information of the three channels from the first video tape recorder device, respectively, and the fourth parameter. ~ The resistance of the sixth channel faders 110 to 112 is varied to adjust the level of the audio information of the three channels from the second video tape recorder. The audio information of which the level is adjusted by the first to sixth channel faders 107 to 112 is the first bus line 131, respectively.
Alternatively, it is supplied to the crossfader 133 via the second bus line 132.

The crossfader 133 is provided with an operating lever that is manually operated up and down, and in accordance with the shift of the operating lever, audio information and second information supplied via the first bus line 131. Bus line 13
The cross-fade processing described below is applied to the audio information supplied via the 2.

That is, the operating lever of the crossfader 133 is set, for example, at the uppermost position before the crossfading process. The cross fader 133 outputs only the audio information supplied via the first bus line 131 when the operation lever is located at the uppermost position. Further, the crossfader 133 gradually lowers (fade out) the audio information supplied via the first bus line 131 in response to the operation lever being gradually moved downward. In addition to outputting, the audio information supplied via the second bus line 132 is gradually leveled up (fade in) and output. The crossfader 133 outputs only the audio information supplied via the second bus line 132 when the operation lever is moved to the lowermost position.

Here, in order to perform such cross-fade processing, program audio information (PGM audio information) that is the audio information that fades in and preset audio information (PST audio information) that is the audio information that fades out. Must be preset. As mentioned above, the first
~ First to sixth selection switches 1 are provided at connection points between the sixth information lines 113 to 118 and the first bus line 131.
19 to 124 are also the first to sixth information lines 1
Seventh to twelfth selection switches 125 to 130 are provided at connection points between the first to twelfth selection switches 119 to 130, respectively, at connection points between the first to twelfth selection switches 119 to 130. Is operated to set the PGM audio information and the PST audio information.

Specifically, the first channel, which is the audio information from the first video tape recorder device, is recorded.
It is desirable to output the audio information of the third channel first, and finally output the audio information of the fourth to sixth channels, which is the audio information from the second video tape recorder device, by the crossfade processing described above. In this case, the above-mentioned first to third selection switches 11
9 to 121 are all turned on and the tenth
~ All of the twelfth selection switches 128 to 130 are turned on.

As a result, the audio information of the first channel to the third channel is transferred to the first bus line 13.
1 to the crossfader 133, and the audio information of the fourth to sixth channels is supplied to the crossfader 133 via the second bus line 132. In this state, by operating the operation lever set so as to be located at the uppermost position so as to gradually move to the lowermost position, the audio information from the first video tape recorder device is first output. , The audio information from the first video tape recorder device is faded out, the audio information from the second video tape recorder device is faded in, and finally the second video tape recorder device is faded in. It is possible to perform crossfade processing such that only audio information from the video tape recorder device is output.

Incidentally, the first to third selection switches 11 described above
9 to 121 and the 10th to 12th selection switches 12
The operation states 8 to 130 are merely examples, and the operation states are performed according to the audio information of the channel to be output.

The audio information that has been subjected to the crossfade processing by the crossfader 133 is output via the output terminal 134 and supplied to the third video tape recorder device that inputs and outputs the 1-channel audio information. , Is recorded together with video information supplied separately.

[0012]

However, the above-mentioned conventional audio mixer apparatus adjusts the level of the audio information of each channel by the first to sixth channel faders 107 to 112, and adjusts this level. Since the crossfader 133 performs the crossfading processing on the audio information and outputs the audio information, if the output level of the audio information after the crossfading processing is not appropriate, the above-mentioned first to sixth channels are restarted. Level adjustments had to be made with faders 107-112. Level adjustment in the above channel fader is very troublesome because it is done for each channel.
It is very difficult to make the level balance between the channels before readjustment and the level balance between the channels after readjustment the same.

In many cases, external devices that perform input / output with audio data that is digital audio information are not provided with means for adjusting the input level of the audio data. Therefore, there is a problem in that the external device cannot process the audio information supplied from the audio mixer device at an optimum level.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an audio mixer device which can easily set an output level to a desired level.

[0015]

An audio mixer device according to the present invention is an audio mixer device for editing audio information supplied by being divided into a plurality of channels, and adjusting the level of the audio information supplied. A channel fader provided for each channel, an information line connected to an output terminal of each channel fader, and a first bus line and a second bus line each having an information line for each output channel, A first selection switch which is provided at a connection point between the information line and the first bus line, which are respectively connected to the output terminals of the channel faders, and which selects the information line according to a selection operation; The information line connected to the output end of the fader and the second line
Second selection switch which is provided at each connection point with the bus line and selects the information line according to the selection operation, and the first selection switch which selects the first information line.
Audio information supplied via the second bus line and audio information selected via the second selection switch and supplied via the second bus line are mixed, and the audio information is transmitted in accordance with the movement of the operation lever. The crossfader provided for the output channels for varying the mixing ratio of the output channels, and the master fader for the output channels for adjusting the level of the audio information from the crossfader are provided. Solve the problem.

[0016]

The audio mixer device according to the present invention has a structure in which the level is adjusted by the channel fader and the level of the audio information variably controlled by the cross fader to obtain a desired mixing ratio is adjusted and output by the master fader. Thus, the output level of the audio information output from the audio mixer device can be adjusted appropriately only by adjusting the level of the master fader.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of an audio mixer device according to the present invention will be described below with reference to the drawings.
The audio mixer device according to the present embodiment handles audio data that is digitized audio information. For example, audio data supplied in 16 channels is edited into 4 channels as shown in FIG. It is designed to output.

Specifically, as shown in FIG. 1, when the decoder 1 for decoding the supplied audio data and the audio data from the decoder 1 are subjected to emphasis processing, A de-emphasis circuit 2 that performs de-emphasis processing on audio data and outputs it, a mute switch 3 that is turned on when the audio data from the de-emphasis circuit 2 is to be muted, and an equalizer section, which will be described later,
The audio processing circuit 4 is composed of a filter section and a delay control section, which processes the audio data through the mute switch 3, and a channel fader 5 which adjusts the level of the audio data from the audio processing circuit 4. Have In addition, the decoder 1
The circuits from to channel fader 5 are 1
There are 6 channels.

In the audio mixer device, the information line 6 connected to the output end of each channel fader 5 and the first bus line 7 and the second bus line having the information lines for four channels, respectively. 8
And a first selection line which is provided at a connection point between the information line 6 and the first bus line 7, which are respectively connected to the output end of the channel fader 5, and which selects the information line according to a selection operation. The switch 9 and the information line 6 respectively connected to the output end of the channel fader 5 and the second bus line 8 are respectively provided at connection points thereof, and the information line is selected in response to a selection operation. Selection switch 10 and a preset bus selector 11 for selecting which of the first bus line 7 and the second bus line 8 is the preset bus described later.

In the audio mixer device, the audio data selected by the first selection switch 9 and supplied via the first bus line 7 and the second audio data selected by the second selection switch 10 are selected. The audio data supplied via the two bus lines 8 are mixed,
A crossfader 12 that outputs by changing the mixing ratio of the audio data according to the movement of the operation lever, a master fader 13 that adjusts the level of the audio data from the crossfader 12, and an audio data from the master fader 13. An emphasis circuit 14 for performing emphasis processing on the output and outputting the same.
4 has an encoder 15 for encoding and outputting the audio data from the A.4.

Each circuit from the crossfader 12 to the encoder 15 is provided for four channels.

The audio mixer device further includes a third selection switch 16 for selecting audio data to be supplied to the monitor speaker device from 16-channel audio data via the channel faders 5. A fourth selection switch 17 for selecting audio data to be supplied to the monitor speaker device from the four-channel audio data via the master faders 13, and the third and fourth selections. It further includes a fifth selection switch 18 for selecting the audio data to be supplied to the monitor speaker device from the audio data selected by the switches 16 and 17.

Next, for example, as shown in FIG.
Video tape recorder device (first to third VTRs) 5
1 to 53, the audio data output by the reproduction of 1 to 53 is edited by the audio mixer device 50 and recorded by the fourth video tape recorder device (fourth VTR) 54 as a specific example. The operation will be explained.

The above-mentioned first to fourth VTRs 51 to 54
Is a digital VTR that records and reproduces video data and audio data, which are digital data, respectively.
Also, the audio data is a digital VT for business use.
According to the so-called AES / EBU format, which is defined as the format of audio data in R, input / output is performed on, for example, 4 channels.

First, the 4-channel audio data from the first VTR 51 is the input terminals 2 for the first to fourth channels of the audio mixer device shown in FIG.
1 to 24, and the 4-channel audio data from the second VTR 52 is supplied to the fifth to eighth channel input terminals 25 to 28, respectively, and the 4-channel audio data from the third VTR 53 is supplied. The data is input terminals 29 to 32 for the 9th to 12th channels.
Is supplied to each.

In this case, since there is no VTR connected to the 13th to 16th channel input terminals 33 to 36 of the audio mixer device, the audio data is not supplied.

From each of the VTRs 51 to 53, the first channel input terminal 21 to the twelfth channel input terminal 3 are connected.
Each audio data supplied via 2 is supplied to the decoder 1 respectively. As described above, since the format of the audio data is in accordance with the AES / EBU format, the audio data includes
In addition to the actual audio data, synchronization data and various data (presence or absence of emphasis, sampling frequency, professional / consumer, etc.) for the actual audio data are added. Therefore, the decoder 1 is
The actual audio data, the synchronization data, and various data are decoded from the audio data of the respective channels, are separated, and the actual audio data of the respective channels are supplied to the de-emphasis 2 and the respective channels The audio data synchronization data and various data are supplied to a system controller (not shown).

The system controller thereafter controls the audio mixer device so as to process the audio data according to the synchronization data and various data.

That is, the system controller is
When the various data are supplied from the decoder 1, it is possible to detect the presence or absence of emphasis processing of the audio data of the channel from the various data, and the de-emphasis circuit 2 is controlled according to the detection result. Thus, the de-emphasis circuit 2 performs de-emphasis processing on the audio data of each channel when the de-emphasis processing is performed on the audio data of each channel, and does not perform de-emphasis processing on the audio data. Supplies the audio data as it is to the mute switch 3.

Each of the mute switches 3 is adapted to mute the output of the audio data of that channel by turning it on. Only when the user wants to mute the audio data of a desired channel, the user can switch the mute switch of that channel. Turn on. The audio data of the channels other than the mute switch 3 which has been turned on are respectively processed by the audio processing circuit 4.
Is supplied to.

The audio processing circuit 4 is provided with an equalizer section, a filter section, and a delay control section for each channel. The equalizer section is divided into a low-frequency control section, a mid-frequency control section, and a high-frequency control section, and the level of the audio data can be controlled for each band.

The filter section is provided with a low-frequency cut section and a high-frequency cut section, which are used when cutting the low-frequency component or high-frequency component of the audio data. The delay control section is used for phase adjustment (lip ink) with the video data. That is, the video data is transmitted not only during editing but with a delay of one frame or more.
Therefore, the transmission timings of the video data and the audio data are matched with each other, for example, the fourth VTR 5
4 is adjusted using the delay control unit.

The audio data of each of the channels supplied to the audio processing circuit 4 is adjusted in high, middle and low frequency levels by the equalizer section in accordance with a user's operation, and the high frequency band or high frequency band by the filter section. The low frequency band is cut, a predetermined time is delayed by the delay control section so as to match the timing with the video data, and the delayed video signal is supplied to the channel fader 5.

The channel fader 5 is used for adjusting the level balance of the audio data of each channel, and
It is provided for adjusting the level balance between VTRs, and the user adjusts the level balance of audio data between the channels by adjusting the channel fader 5. This channel fader 5
The audio data of each channel from is transmitted through the information line 6 of each channel.

Here, each of the crossfaders 12 provided for four channels which are the output channels of the audio mixer device is provided with an operation lever, and the user can move the operation lever up and down. Thus, the cross-fade processing is performed such that only one audio data is first output, the other audio data is gradually overlapped and output, and finally only the other audio data is output. Therefore, the user has to select the audio data to be supplied to each crossfader 12.

The preset bus selector 11 is a bus line for transmitting the audio data output from the crossfader 12 first, and the crossfader 12 is the last.
It is provided to set a bus line for transmitting audio data output from the. Further, a first selection switch 9 having a switch at a connection point between the first bus line 7 and each information line 6 connected to an output end of each channel fader 5, and the second selection switch 9 described above. The second selection switch 10 having a switch at each connection point between the bus line 8 and each information line 6 connected to the output end of each channel fader 5 includes the first and second bus lines 7, It is provided to select the audio data of the channels to be transmitted via the respective channels 8.

The user selects the preset bus selector 1
1, the first bus line 7 is set as a bus line for transmitting audio data output from the cross fader 12 first, and the second bus line 8 is output from the cross fader 12 last. Audio data of a desired channel is selected by turning on each switch provided in the first selection switch 9 and the second selection switch 10 while setting the audio data as a bus line for transmitting the audio data.

Audio data selected by turning on each switch of the first and second selection switches 9 and 10 passes through the first bus line 7 or the second bus line 8 to the cross signal. It is supplied to the fader 12.

The crossfaders 12 are provided, for example, a total of four for the output channels, and each comprises a first variable resistor 12a, a second variable resistor 12b and an adder 12c. The first variable resistor 12a
Are respectively connected to different information lines of the first bus line 7, and the second variable resistors 12b are respectively connected to different information lines of the second bus line 8. The output terminals of the first variable resistor 12a and the second variable resistor 12b are connected to the adder 12c, respectively.

The first and second variable resistors 12a,
The reference numerals 12b are variable in conjunction with the operation of the operation lever. For example, when the operation lever is operated so as to increase the resistance value of the first variable resistor 12a, When the resistance value of the second variable resistor 12b is decreased and, conversely, the operation lever is operated so as to increase the resistance value of the second variable resistor 12b,
The resistance value of the first variable resistor 12a is lowered.

The operating levers of the crossfaders 12 having such a configuration are initially set so as to be located at, for example, the uppermost portion, and only the audio data supplied via the first bus line 7 is set. Is output. Next, when the operation lever is gradually moved downward, the first fader 12a of the crossfader 12 is changed and the crossfader 12 is supplied through the first bus line 7. The level of audio data is gradually lowered (faded out), and the second variable resistor 12
b is changed, the level of the audio data supplied via the second bus line 8 is gradually raised (faded in), and these two audio data are added to the adder 1
2c performs an addition process and outputs them in a superimposed manner.
Then, when the operation lever is moved to the lowermost position, the cross fader 12 outputs only the audio data supplied via the second bus line 8.

Specifically, for example, first, the image of the person shown in FIG. 3A is displayed, then, as shown in FIG. 3B, the image of the mountain is gradually overlapped and finally displayed. When the audio data is edited in accordance with the video editing for displaying only the mountain video shown in FIG. 7C, the audio data supplied to the cross fader 12 via the first bus line 7 Is audio data relating to the human image, and the audio data supplied to the crossfader 12 via the second bus line 8 is
Select audio data relating to the mountain image.

A monitor device (not shown) is shown in FIG.
When the human image shown in (a) is displayed, the operation lever of the crossfader 12 is set to the uppermost position.
As a result, only audio data corresponding to the human image is output from the crossfader 12 as shown by the dotted line in FIG. Next, as shown in FIG. 3B, when a mountain image is gradually displayed together with the human image on the monitor device, the user responds to the displayed mountain image. The operation lever is gradually moved downward. As a result, the crossfader 12 gradually lowers the level of the audio data corresponding to the human image as shown by the dotted line in FIG. 4, and corresponds to the mountain image as shown by the solid line in FIG. The level of the audio data is gradually raised, and these two audio data are overlapped (crossfaded) and output.

Then, as shown in FIG. 3C, when only the mountain image is displayed on the monitor device, the user shifts the operation lever to the lowermost position. As a result, the crossfader 12 sets the level of the audio data corresponding to the human image to the "0" level as shown by the dotted line in FIG. 4, and corresponds to the mountain image as shown by the solid line in FIG. Output audio data only.

As a result, it is possible to perform editing such that audio data corresponding to the changing image is output.

The four-channel output terminals 40 to 43 shown in FIG. 1 are connected to the speaker device 56 via the amplifier 55 shown in FIG. Therefore, when it is desired to hear the audio data of the audio from the channel fader 5, the audio of the selected channel is selected by selecting the desired channel using the third selection switch 16 and the fifth selection switch 18. A voice corresponding to the data is produced from the speaker device 56. Also,
When it is desired to hear the audio data from the crossfader 12, the fourth selection switch 17 and the fifth selection switch 17 are used.
By selecting the channel to be listened to by using the selection switch 18 of, the voice corresponding to the audio data of the selected channel is produced from the speaker device 56.

Therefore, the user is required to use the speaker device 5
The above editing can be performed while listening to the voice pronounced from 6.

The respective audio data output from the respective crossfaders 12 are then respectively supplied to the master fader 13. The master fader 13 has a variable resistance configuration.
Is used to adjust the output level of each audio data.

In this way, the level of the audio data whose level is adjusted by the channel fader 5 and variably controlled by the cross fader 12 to obtain a desired mixing ratio is adjusted by the master fader 13 and output. By doing so, the output level of the audio data output from the audio mixer device can be easily and quickly brought to an appropriate level only by adjusting the level of the master fader 13.

Therefore, when readjusting the output level, it is not necessary to adjust the level of the channel fader 5, and the output level is readjusted while maintaining the level balance between the initially set channels. be able to. Therefore, it is possible to prevent the disadvantage that the level balance between the channels is lost due to the readjustment of the channel fader 5 when the readjustment of the output level is performed.

Further, as described above, since the output level of the audio data from the audio mixer device can be adjusted only by the master fader 13, the channel fader 5 uses the level balance of the audio data between the channels. For adjustment, the crossfader 12 can be operated independently for switching the audio data, and the master fader 13 can be operated independently for adjusting the output level of the audio data from the audio mixer device. It is possible to enable efficient editing work.

The audio data whose output level has been adjusted by the master fader 13 is then supplied to the emphasis circuit 14. The emphasis circuit 14
Performs emphasis processing on the audio data only when specified by the user, and supplies them to the encoder 15.

The encoder 15 adds a synchronizing signal and the above-mentioned various data to the audio data supplied from the emphasis circuit 14, and outputs these via the output terminals 44 to 47 of the four channels. The audio data output from the output terminals 44 to 47 is supplied to the fourth VTR 54 shown in FIG.

The above-mentioned 4 supplied to the above-mentioned fourth VTR 54.
Channel audio data is supplied separately from the audio data, and the first to third VTRs 51 to 5 are supplied.
The third video data is recorded in the fourth VTR 54 together with the video data edited by a video editing device (not shown).

Here, there are few external devices that can input and output audio data in digital format and that can adjust the input level of the audio data. Although there is a problem that the sound quality of the generated audio data is deteriorated, the master fader 13 finally adjusts the level of the audio data from the crossfader 12 as in the audio mixer device according to the above-described embodiment. With this configuration, since the level of the audio data supplied to the external device side can be adjusted on the audio mixer device side, the sound quality deterioration of the audio data on the external device side can be prevented. It is possible to edit without deterioration of sound quality.

In the above description of the embodiments, the audio mixer device according to the present invention processes information by using audio data which is digitized audio information. Information processing may be performed using an audio signal which is information. Although the audio data input in 16 channels is edited into the audio data in 4 channels and output, the input channels and the output channels may of course be arbitrary.

[0057]

The audio mixer device according to the present invention is
The level is adjusted by the channel fader, and the level of the audio information that is variably controlled by the cross fader to obtain the desired mixing ratio is adjusted by the master fader and output. The output level of the audio information can be set to an appropriate level easily and quickly only by adjusting the level of the master fader.

Therefore, when the output level is readjusted, it is not necessary to adjust the level of the channel fader, and the output level is readjusted while maintaining the level balance between the initially set channels. You can Therefore, when readjusting the above output level,
Since the level adjustment of the channel fader is performed again, it is possible to prevent the disadvantage that the level balance between channels is lost.

As described above, since the output level of the audio information from the audio mixer device can be adjusted only by the master fader, the channel fader is used for adjusting the level balance of the audio information between the channels. , The crossfader can be operated independently for switching the audio information, and the master fader can be operated independently for adjusting the output level of the audio information from the audio mixer device, which enables efficient editing. Work can be enabled.

It should be noted that there are few external devices that can adjust the input level of the audio data among the external devices that perform input / output with audio data that is digital format audio information. Although the sound quality deterioration of the input audio data was a problem, the level of the audio data from the cross fader is finally adjusted and output by the master fader like the audio mixer device according to the above-described embodiment. With this configuration, since the level of the audio data supplied to the external device side can be adjusted on the audio mixer device side, the sound quality deterioration of the audio data on the external device side can be prevented, and the sound quality deterioration can be prevented. It can be possible to edit without.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of an audio mixer device according to the present invention.

FIG. 2 is a block diagram for explaining a specific example in the case of editing audio data in the audio mixer device of the above embodiment.

FIG. 3 is a schematic diagram for explaining a crossfade process of a crossfader provided in the audio mixer device of the above embodiment.

FIG. 4 is a schematic diagram showing how audio data is faded in and faded out in the crossfade process.

FIG. 5 is a block diagram of a conventional audio mixer device.

[Explanation of symbols]

 Decoder 2 De-emphasis 3 Mute switch 4 Audio Processing circuit 5 ... System controller 6 ... Information line 7 ... First bus line 8 ... ...... Second bus line 9 ...... First selection switch 10 ・ ・ ・ ・ Second selection switch 11 ・ ・ ・-Preset bus selector 12 --- Crossfader 12a --- First variable resistor 12b --- Second variable resistor 12c-・ ・ ・ Adder 13 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Master fader 14 ・ ・ ・ ・ ・ ・ Emphasis circuit 15 ・ ・ ・ ・ ・ ・ E Coder 16 ......... third selection switch 17 ......... fourth selection switch 18 ......... fifth selection switch

Claims (1)

[Claims] 1. An audio mixer device for editing audio information supplied separately to a plurality of channels, comprising: a channel fader provided for each channel for adjusting the level of the supplied audio information; Information lines connected to the output terminals of each channel fader, first and second bus lines having information lines for each output channel, and information lines connected to the output terminals of the above channel faders And a first selection switch which is provided at a connection point between the first bus line and the first bus line and which selects the information line according to a selection operation, and an information line which is respectively connected to an output end of the channel fader and the first selection switch. It is provided at each connection point with the second bus line, and its information line is Second selection switch and is selected by the first selection switch audio information supplied through the first bus line for selecting the emission, and, second
Are provided for the output channels for mixing the audio information selected by the selection switch of No. 3 and supplied through the second bus line, and varying and outputting the mixing ratio of the audio information according to the movement of the operation lever. An audio mixer device comprising: a cross fader; and master faders provided for the output channels for adjusting the level of audio information from the cross fader.