JP6946872B2 - Sound signal processing device and sound signal processing method - Google Patents

Description

The present invention relates to a sound signal processing device and a sound signal processing method, and more particularly to a sound signal processing device and a sound signal processing method for controlling the volume.

The acoustic signal processing device described in Patent Document 1 is an acoustic processing device that automatically makes desired settings according to each function of a mixer such as a connected fader.

The acoustic signal processing device described in Patent Document 1 assigns an acoustic signal input from a device such as a microphone or an instrument to each channel, and controls various parameters such as a signal level (volume value) for each channel. The mixer of the acoustic signal processing device described in Patent Document 1 has a plurality of input terminals and output terminals. An acoustic signal is input to each input terminal from each musical instrument or microphone such as a keyboard or a guitar. Further, from the output terminal, an acoustic signal obtained by electrically adding and processing the input acoustic signal is output.

Japanese Unexamined Patent Publication No. 2017-68948

By the way, in the mixer (sound signal processing device) of the acoustic signal processing device described in Patent Document 1, the acoustic signal (sound signal) output for each of a plurality of channels (for example, an instrument and a microphone) is output to a plurality of buses. It is configured as follows. However, in such a sound signal processing device, when outputting sound signals of different levels (volumes) to each of a plurality of buses, it may be necessary to individually control each of the plurality of buses for each channel. there were.

Therefore, an object of the present invention is to provide a sound signal processing device and a sound signal processing method capable of automatically controlling the level of sound signals output to a plurality of buses.

As described above, the sound signal processing device includes the first bus for inputting the first output signal, the second bus for inputting the second output signal, the first level adjuster, the operation unit, and the second level adjuster. And. The first level regulator is electrically connected to the first bus, outputs the first output signal to the first bus, and determines the signal level of the input first input signal based on the adjustment level. Control. The operation unit receives the adjustment level of the first input signal input to the first level adjuster. The second level regulator is electrically connected to the second bus, outputs the second output signal to the second bus, and is input in conjunction with the first level regulator. Control the signal level of the signal.

The sound signal processing device and the sound signal processing method can automatically control the level of the sound signal output to a plurality of buses.

It is a block diagram which shows the structure of the sound signal processing apparatus. It is explanatory drawing explaining an example of the main part of the operation panel of a sound signal processing apparatus. It is a block diagram which shows the signal processing function executed by the CPU, the waveform I / O, and the signal processing unit. It is a block block diagram which shows an example of the input channel i. FIG. 5 (A) is an explanatory diagram illustrating an example of the operation of the first input signal and the second input signal, and FIG. 5 (B) shows the first output signal and the second output when only the first threshold value is used. FIG. 5C is an explanatory diagram for explaining an example of signal operation, and FIG. 5C is an explanatory diagram for explaining an example of operation of the first output signal and the second output signal when only the second threshold value is used. It is a flowchart which shows the sound signal processing method of input channel i. It is a block block diagram which shows an example of the main part of the input channel i which concerns on modification 1. FIG. It is a block block diagram which shows an example of the main part of the input channel i which concerns on modification 2. FIG. It is a flowchart which shows the operation of the sound signal processing apparatus of the input channel i which concerns on modification 3. FIG.

FIG. 1 is a block diagram showing a configuration of a sound signal processing device 1 (audio mixer). The sound signal processing device 1 includes a display 11, a storage unit 12, a CPU 13, a RAM 14, a waveform I / O 15, a signal processing unit 16, an operation unit 17, and other I / O 18. .. These configurations are electrically connected to each other via a bus.

The display 11 comprises, for example, an LCD (Liquid Crystal Display) and displays various information. Further, the display 11 may display a GUI (Graphical User Interface) screen and accept a user's operation.

The storage unit 12 is a storage medium, for example, a flash memory. Various programs, a level control threshold value T1 (hereinafter referred to as a first threshold value T1) and a switching threshold value T2 (hereinafter referred to as a second threshold value T2) are stored in the storage unit 12. The first threshold value T1 is a higher value than the second threshold value T2.

The CPU 13 controls the operation of the sound signal processing device 1. The CPU 13 performs various operations by reading various programs stored in the storage unit 12 into the RAM 14 and executing the programs. For example, the CPU 13 controls input / output of a sound signal in the waveform I / O 15, mixing processing and effect processing in the signal processing unit 16. Further, the CPU 13 changes the values of the parameters related to these processes.

The waveform I / O 15 is electrically connected to an input / output device such as a musical instrument and a microphone by wire or wirelessly. The waveform I / O 15 includes one or more A / D converters and one or more D / A converters. The waveform I / O 15 converts analog signals input from each of the input / output devices into digital signals, and transmits the converted signals to the signal processing unit 16. Further, the waveform I / O 15 receives the digital signal processed by the signal processing unit 16 and converts it into an analog signal, and transmits the converted signal to the input / output device. At least one channel is assigned to each of the input / output devices.

The signal processing unit 16 is composed of a plurality of DSPs. The signal processing unit 16 performs various signal processing such as mixing processing and effect processing. The signal processing unit 16 performs signal processing such as characteristic adjustment processing such as equalizing, mixing processing, and effect processing on the sound signal supplied via one or a plurality of A / D converters of the waveform I / O 15. The signal processing unit 16 outputs the digital sound signal after signal processing to the input / output device via the D / A converter of the waveform I / O 15.

The operation unit 17 is composed of a plurality of types of controls of the operation panel 6 described later (see FIG. 2). The operation unit 17 receives various operations from the controls operated by the user.

Others The I / O 18 is electrically connected to an external device and transmits / receives signals as needed.

Here, the operation panel 6 will be described. FIG. 2 is an explanatory diagram showing an example of a main part of the operation panel 6. The operation panel 6 has a plurality of channel strips 61 having one-to-one correspondence with the plurality of channels. Faders 611, switches 612, selector switches (SEL) 614, and knobs 613 are arranged vertically (from the lower side to the upper side in FIG. 2) in each of the plurality of channel strips 61.

The fader 611 causes the knob (fader position) to operate along the strip to change the level of the corresponding sound signal. The switch 612 is an alternate type switch. The knob 613 is moved clockwise or counterclockwise to, for example, change the level of the corresponding sound signal. Each time the select switch 614 is pressed, the function and state of the corresponding operator are changed.

Further, the operation panel 6 has a channel strip 62 corresponding to the output side of the first bus 41. An operator similar to that of the channel strip 61 is arranged on the channel strip 62. The operation panel 6 is not limited to the form shown in FIG. 2, and a touch panel, knobs, switches, and the like may be provided in addition to the controls shown in FIG.

FIG. 3 is an equivalent block diagram showing a signal processing function 2 executed by the CPU 13, the waveform I / O 15, and the signal processing unit 16. As shown in FIG. 3, the signal processing function 2 includes an input patch (input terminal) 21, an input channel 3 composed of a plurality of (for example, 32) input channels i, a first bus 41, and a plurality (for example, 16). A second bus 42 composed of the output channel j of the above is provided. Further, the signal processing function 2 includes a first output channel 51 corresponding to the first bus 41, a second output channel 52 composed of a plurality of (for example, 16) output channels j corresponding to the second bus 42, and an output patch. (Output terminal) 22 is provided.

The input patch 21 receives sound signals from one or more input / output devices.

A sound signal is supplied from the input patch 21 to each input channel i of the input channel 3. The input channel 3 processes the sound signal supplied to the input patch based on the adjustment level of the sound signal received by the operation unit 17. Then, the input channel 3 selectively transmits the sound signal after signal processing to either or both of the first bus 41 and the second bus 42.

The first bus 41 mixes the sound signals supplied from the input channel 3 based on, for example, the signals received from the operators arranged on the channel strip 62, and outputs the sound signals to the first output channel 51.

The first output channel 51 performs signal processing such as equalizing and compression processing on the input sound signal. The sound signal after the signal processing is sent to the output patch 22 (waveform I / O 15).

The second bus 42 mixes the sound signals supplied from the input channel 3 based on, for example, the signals received from the operators arranged on the channel strip 62, and outputs the sound signals to the second output channel 52.

The second output channel 52 performs characteristic adjustment processing such as equalizing and compression processing on the sound signals input to each of the plurality of output channels j. The sound signal after the signal processing is sent to the output patch 22 (waveform I / O 15).

The output patch 22 is electrically connected to an input / output device such as a speaker and headphones. The output patch 22 outputs a sound signal corresponding to each of the input / output devices.

FIG. 4 is a block configuration diagram showing an example of a certain input channel i. As shown in FIG. 4, each input channel i includes a characteristic control circuit 30, a first level regulator 31, and a plurality of second level regulators 32. Further, each input channel i further includes a switch To1, a panning block PAN1, and a plurality of selectors PP1.

The characteristic control circuit 30 is electrically connected to the first level regulator 31. The characteristic control circuit 30 is configured to output a first input signal to the first level regulator 31. The characteristic control circuit 30 includes an equalizer 301, a compression circuit 302, and the like. The characteristic control circuit 30 performs processing such as equalizing and compression processing on the sound signal supplied from the input patch 21.

The first level regulator 31 is electrically connected to the first bus 41 and outputs a first output signal to the first bus 41. The first level regulator 31 controls the signal level of the input first input signal based on the adjustment level operated by the user. In other words, the adjustment level (fader value CF (i)) of the first input signal received by the operation unit 17 is input to the first level adjuster 31.

As shown in FIG. 4, the first level regulator 31 includes a level control circuit 311 and a switching circuit 322. The level control circuit 311 corresponds to, for example, the fader 611 of the operation panel 6 shown in FIG. Further, the switching circuit 312 corresponds to, for example, the switch 612 of the operation panel 6 shown in FIG.

The first input signal processed by the characteristic control circuit 30 is input to the first level regulator 31. The first level adjuster 31 continuously (linearly) adjusts the level of the first input signal based on the fader value CF (i). That is, the first level adjuster 31 adjusts the gain value MV (i) of the first output value based on the fader value CF (i). Further, the CPU 13 controls the first input signal on / off by turning the switch 612 on / off by the user. In the sound signal processing device 1 of the present embodiment, the variable range of the fader value CF (i) of the fader 611 is set to −∞ dB to +6 dB. However, the variable range of the fader value CF (i) is not limited to the above.

As shown in FIG. 4, the first level regulator 31 further outputs a first output signal to the first bus 41 via the switch To1 and the panning block PAN1. The switch To1 corresponds to an operator (for example, a switch) of the operation panel 6 and controls the connection between the first level regulator 31 and the first bus 41 on / off. The panning block PAN1 adjusts the balance of the first output signal transmitted to the first bus 41. The panning block PAN1 corresponds to the knob 613 (see FIG. 4) of the operation panel 6. The user adjusts the balance of the first output signal sent to the first bus 41 by rotating the knob 613 of the operation panel 6 clockwise or counterclockwise.

The second level regulator 32 is electrically connected to the second bus 42. The second level regulator 32 outputs a second output signal to the second bus 42. More specifically, the plurality of second level regulators 32 are electrically connected one-to-one with the plurality of output channels j of the second bus 42. Each of the plurality of second level regulators 32 outputs a second output signal to the corresponding output channel j. Further, each of the plurality of second level regulators 32 includes a level control circuit 321 that controls the signal level of the second input signal. Further, each of the plurality of second level regulators 32 includes a switching circuit 322 for turning on / off the second input signal. As a result, the plurality of second level regulators 32 can control the signal level of the second input signal for each output channel j.

Each level control circuit 321 of the plurality of second level adjusters 32 corresponds to the fader 611 of the operation panel 6. Further, each switching circuit 322 of the plurality of second level regulators 32 corresponds to the switch 612 of the operation panel 6.

Each of the plurality of second level adjusters 32 adjusts the second input signal continuously (linearly) based on the fader value SL (i, j) by moving the knob (fader position) of the fader 611. do. Further, the second level adjuster 32 controls the on / off of the second input signal by the user operating the switch 612 on / off.

By the way, as shown in FIG. 2, the select switch 614 corresponds to the fader 611 and the switch 612 (a state corresponding to the first level adjuster 31 or a plurality of second level adjusters 32) for each input channel i. (The state corresponding to) is switched. More specifically, for example, when the user presses the select switch 614 once while the fader 611 corresponds to the level control circuit 311 the fader 611 corresponds from the level control circuit 311 to the level control circuit 321. Be changed. Further, when the user presses the select switch 614 once while the switch 612 corresponds to the switching circuit 312, the corresponding destination of the switch 612 is changed from the switching circuit 312 to the switching circuit 322.

Further, the select switch 614 may be configured to switch the output channel j of the second bus 42. For example, each time the user presses the select switch 614, the fader 611 and the switch 612 correspond to the second level adjuster 32 of the output channel (j = 1) from the state corresponding to the first level adjuster 31. Switch to the state. When the user further presses the select switch 614, the fader 611 and the switch 612 change from the state corresponding to the second level adjuster 32 of the output channel (j = 1) to the second level adjuster 32 of the output channel (j = 2). It switches to the state corresponding to. As a result, the operation unit 17 receives an operation on the first level regulator 31 and the second level regulator 32 of each output channel j by one fader 611 and one switch 612 provided for each input channel i. Can be done.

As shown in FIG. 4, each of the plurality of second level regulators 32 is electrically connected to the characteristic control circuit 30 via the selector PP1 corresponding to each of the plurality of second level regulators 32. .. Each of the plurality of second level regulators 32 is configured to receive a signal output from the characteristic control circuit 30 as a second input signal.

Each of the plurality of selectors PP1 is a unipolar double throw type switch. The one pole side of the plurality of selectors PP1 is electrically connected to the second level adjuster 32 on a one-to-one basis. Further, one end of each of the plurality of selectors PP1 on the double throw side is connected to the characteristic control circuit 30. Further, the other end of each of the plurality of selectors PP1 on the double throw side is connected to the output side of the first level adjuster 31. That is, the second input signal is a signal output by the characteristic control circuit 30 or a signal output by the first level regulator 31. The sound signal processing device 1 can selectively select the input destination of the second input signal by using the selector PP1 in each input channel i. In other words, in each input channel i, the second output signal output to the second bus 42 can avoid the first level regulator 31.

When the second level adjuster 32 is connected to the characteristic control circuit 30 via the selector PP1, the state Pre (j) is set to 1. On the other hand, when the second level regulator 32 is connected to the output side of the first level regulator 31 via the selector PP1, the state Pre (j) is set to 0.

By the way, each of the plurality of second level regulators 32 controls the level (gain value CV (i, j)) of the input second input signal in conjunction with the first level regulator 31. More specifically, in each input channel i, each of the plurality of second level regulators 32 links the level of the input second input signal with the fader value CF (i) of the first level regulator 31. To control. In other words, each of the plurality of second level adjusters 32 adjusts the level of the second output signal (gain value CV (i, j)) in conjunction with the adjustment level (fader value CF (i)).

Therefore, the first threshold value T1 and the second threshold value T2 are stored in advance in the storage unit 12. When the signal output from the first level regulator 31 is smaller than the first threshold value T1, the second level regulator 32 is input according to the level of the signal output from the first level regulator 31. 2 Control the input signal. Further, the second level regulator 32 turns off the second input signal when the signal output from the first level regulator 31 is smaller than the second threshold value T2.

FIG. 5A is an explanatory diagram illustrating an example of the operation of the first output signal and the second output signal. FIG. 5B is an explanatory diagram illustrating an example of the operation of the first output signal and the second output signal when only the first threshold value T1 is used. FIG. 5C is an explanatory diagram illustrating an example of the operation of the first output signal and the second output signal when only the second threshold value T2 is used. The first output signal is shown by a solid line in FIGS. 5 (A), 5 (B), and 5 (C). The second output signal is shown by a broken line in FIGS. 5 (A), 5 (B), and 5 (C).

When the switch 612 is on in each input channel i, the gain value MV (i) of the first output signal is a fader as shown in FIGS. 5 (A), 5 (B) and 5 (C). It changes continuously (linearly) according to the fader value CF (i) by the operation of 611.

Here, the second input signal shown in FIG. 5A will be described. In each input channel i, as shown in FIG. 5A, the gain value CV (i, j) of the second output signal is the fader value SL (when the fader value CF (i) is equal to or higher than the first threshold value T1. A value based on i, j) (for example, the gain value CV (i, j) of the second output signal is a value obtained by adding the fader value SL (i, j) and the output side gain value SO (i, j). ). When the fader value CF (i) is smaller than the first threshold value T1 and equal to or higher than the second threshold value T2, the gain value CV (i, j) of the second output signal is a value based on the fader value CF (i) ( For example, the gain value CV (i, j) of the second output signal is a value obtained by adding the fader value CF (i) and the output side gain value SO (i, j)). When the fader value CF (i) is smaller than the second threshold value T2, the gain value CV (i, j) of the second output signal becomes −∞ dB. The output-side gain value SO (i, j) is a value whose gain is controlled by the second output channel 52 or the like.

For example, the user moves the fader position of the fader 611 so that the fader value CF (i) becomes smaller than the first threshold value T1. In this case, when the fader value CF (i) becomes smaller than the first threshold value T1, the gain value CV (i, j) of the second output signal is changed from the value based on the fader value SL (i, j) to the fader value CF ( It switches to the value based on i). Further, the user moves the fader position of the fader 611 so that the fader value CF (i) becomes smaller than the second threshold value T2. In this case, when the fader value CF (i) becomes smaller than the second threshold value T2, the gain value CV (i, j) of the second output signal becomes −∞ dB.

The second output signal shown in FIG. 5B will be described. In each input channel i, as shown in FIG. 5B, the gain value CV (i, j) of the second output signal is the fader value SL when the fader value CF (i) is larger than the first threshold value T1. It is a value based on (i, j). When the fader value CF (i) is smaller than the first threshold value T1, the gain value CV (i, j) of the second output signal becomes a value based on the fader value CF (i). For example, the user moves the fader position of the fader 611 so that the fader value CF (i) becomes smaller than the first threshold value T1. In this case, when the fader value CF (i) becomes smaller than the first threshold value T1, the gain value CV (i, j) of the second output signal becomes the fader value CF (i) and the output side gain value SO (i, j). ) And is added.

Further, the second input signal shown in FIG. 5C will be described. In each input channel i, as shown in FIG. 5C, the gain value CV (i, j) of the second output signal is the fader value SL (when the fader value CF (i) is the second threshold value T2 or more. It is a value based on i and j). When the fader value CF (i) is smaller than the second threshold value T2, the gain value CV (i, j) of the second output signal becomes −∞. For example, the user moves the fader position of the fader 611 so that the fader value CF (i) becomes smaller than the second threshold value T2. In this case, when the fader value CF (i) becomes smaller than the second threshold value T2, the gain value CV (i, j) of the second output signal becomes −∞.

In this way, the gain value CV (i, j) of the second output signal changes depending on the fader value CF (i). That is, the second level regulator 32 that controls the second output signal is interlocked with the first level regulator 31 that controls the first output signal. This eliminates the need for the second level regulator 32 to individually control the second output signal. Therefore, the sound signal processing device 1 of the present embodiment can automatically control the level (gain value) of the sound signal output to the plurality of buses (second bus 42).

For example, as one aspect of the sound signal processing device 1 of the present embodiment, the sound signal processing device 1 is used in an acoustic facility, the first bus 41 is connected to a speaker for spectators, and the second bus 42 is a monitor of the performer. Assume that it is connected to a speaker. For the input channel i with the operator, in order to set the sound level of the speaker for the audience to -∞ (off state) dB, the fader position of the input channel i of the fader 611 corresponding to the first bus 41 is set to -∞. Move towards dB. Conventionally, even if the sound level of a certain input channel i for the audience is reduced, the sound level of the monitor speaker does not change, so that the performer cannot know that the sound level of the input channel i is reduced. rice field. However, in the sound signal processing device 1 of the present embodiment, even if the sound level of the monitor speaker (fader value SL (i, j)) is different from the sound level of the speaker for the audience, the second level adjuster 32 is used. By interlocking with the first level adjuster 31, the performer can know that the speaker for the audience is operated in the off state.

Further, as another embodiment of the sound signal processing device 1 of the present embodiment, the sound signal processing device 1 is used for reporting, the first bus 41 is connected to the output device for broadcasting, and the second bus 42 is the relay destination. Assume that it is connected to a speaker. Here, too, the second level adjuster 32 is interlocked with the first level adjuster 31, so that the user at the relay destination can know that the output device for broadcasting is operated in the off state.

When the fader value CF (i) is smaller than the first threshold value T1 and equal to or greater than the second threshold value, the gain value CV (i, j) of the second output signal is not a value based on the fader value CF (i). You may. For example, when the fader value CF (i) is smaller than the first threshold value T1 and equal to or larger than the second threshold value, the gain value CV (i, j) of the second output signal is the gain value MV (i) of the first output signal. It may be configured to change based on the amount of change in.

Further, the sound signal input to the first output channel 51 is controlled by using, for example, an operator such as a fader 621 of the operation panel 6, and the gain is controlled by the output side gain value CO (i). Further, the second output channel 52 is controlled by using, for example, an operator such as a fader 621 of the operation panel 6, and the gain is controlled by the output side gain value SO (i, j). The select button (SEL) 622 changes the function and state of the corresponding operator each time it is pressed.

FIG. 6 is a flowchart showing a sound signal processing method for a certain input channel i. In the sound signal processing method of the present embodiment, the operation unit 17 receives an adjustment level (fader value CF (i)). Further, the sound signal processing method controls the level of the first input signal based on the adjustment level (fader value CF (i)). Further, the sound signal processing method outputs the signal-processed first input signal to the first bus 41 as a first output signal. Further, the sound signal processing method controls the level of the sound signal of the second output signal output to the second bus 42 in conjunction with the first output signal.

The details of the sound signal processing method will be described below with reference to FIG. The following description is an example, and the sound signal processing method is not limited to this.

First, in the fader value CF (i), a value corresponding to the fader position of the fader 611 of the operation panel 6 is input (step S11). A value obtained by adding the fader value CF (i) and the output-side gain value CO (i) is input to the gain value MV (i) of the first output signal (step S12). It is determined whether or not the fader value CF (i) is equal to or higher than the first threshold value T1 (step S13). When the fader value CF (i) is equal to or greater than the first threshold value T1, (step S13: Yes), the second level adjuster 32 connected to the selector PP1 whose state Pre (j) is 1 is targeted. A value obtained by adding the fader value SL (i, j) and the output side gain value SO (i, j) is input to the signal gain value CV (i, j) (step S14). Then, the display value of the display 11, the gain value MV (i) of the first output signal, and the gain value CV (i) of the second output signal are updated (step S15).

If the fader value CF (i) is smaller than the first threshold value T1 (step S13: No), it is determined whether or not the fader value CF (i) is smaller than the second threshold value T2 (step S16). When the fader value CF (i) is smaller than the first threshold value T1 (step S13: No) and equal to or higher than the second threshold value T2 (step S16: No), it is connected to the selector PP1 whose state Pre (j) is 1. For the second level adjuster 32, the gain value CV (i, j) of the second signal includes the fader value CF (i) and the output side gain value SO (i, j) of the second bus 42. Is input (step S17). Then, the process proceeds to step S15.

Further, when the fader value CF (i) is smaller than the first threshold value T1 (step S13: No) and the fader value CF (i) is smaller than the second threshold value T2 (step S16: Yes), the state Pre. For the second level adjuster 32 connected to the selector PP1 in which (j) is 1, −∞ dB is input to the gain value CV (i, j) of the second signal (step S18). .. Then, the process proceeds to step S15.

As described above, in the sound signal processing method of the present embodiment, for example, when the user makes the fader value CF (i) smaller than the first threshold value T1, the gain value CV (i, j) of the second output signal is set. Is a value linked to the fader value CF (i). Further, when the user makes the fader value CF (i) smaller than the second threshold value T2, the gain value CV (i, j) of the second output signal becomes −∞ dB (see FIG. 5A).

In this way, the gain value CV (i, j) of the second output signal varies depending on the fader value CF (i). That is, the second level regulator 32 that controls the second output signal is interlocked with the first level regulator 31 that controls the first output signal. As a result, the second level adjuster 32 does not need to individually control the gain value CV (i, j) of the second output signal. Therefore, the sound signal processing method of the present embodiment can automatically control the level (gain value) of the sound signal output to the plurality of buses (second bus 42).

The sound signal processing device 1 of the first modification of the present embodiment will be described with reference to FIG. 7. FIG. 7 is a block configuration diagram showing an example of a main part of each input channel i according to the first modification. In the first modification, as shown in FIG. 7, each input channel i has a switch SW1.

The switch SW1 is a unipolar double throw type switch. The one-pole side of the switch SW1 is electrically connected to the second level adjuster 32 via the selector PP1. Further, one end of the switch SW1 on the double throw side is electrically connected to the input side of the compression circuit 302. Further, the other end of the switch SW1 on the double throw side is electrically connected to the output side of the compression circuit 302.

In this case, the user selectively selects either the pre-fader signal (previous stage signal) or the post-fader signal (post-stage signal) of the compression circuit 302 as the second input signal by using the switch SW1. be able to. As a result, the sound signal processing device 1 and the sound signal processing method of the modification 1 of the present embodiment can be operated flexibly.

Further, the sound signal processing device 1 of the second modification of the present mobile phone will be described with reference to FIG. FIG. 8 is a block configuration diagram showing an example of a main part of each input channel i according to the modified example 2. In the second modification, as shown in FIG. 8, each input channel i has a selector PP2 instead of the selector PP1.

The selector PP2 is a one-pole, three-throw switch. One pole side of the selector PP2 is electrically connected to the second level regulator 32. Further, each end of the selector PP2 on the 3-throw side is connected to each output side of the equalizer 301, the compression circuit 302, and the first level adjuster 31.

As a result, the user can selectively select any one of the equalizer 301, the compression circuit 302, and the first level regulator 31 as the second input signal. In other words, the second level regulator 32 can receive signals from the output sides of the equalizer 301, the compression circuit 302, and the first level regulator 31. As a result, the sound signal processing device 1 and the sound signal processing method of the second modification of the present embodiment can be operated flexibly.

Further, the sound signal processing device 1 of the third modification of the present embodiment will be described with reference to FIG. In the sound signal processing device 1, the DCA function may be used to collectively control the levels of sound signals of a plurality of input channels i. In the DCA function, a plurality of desired input channels i are regarded as one DCA group g, and the signal level of each input channel i of the DCA group g is controlled by one fader (DCA fader) corresponding to the DCA group g. Is what you do. As a result, in the sound signal processing device 1 and the sound signal processing method, the gain value CV (i, j) of the second output signal of the second level regulator 32 corresponding to the output channel j of each input channel i is collectively controlled. Will be done.

Specifically, the DCA fader value DCA (g) set by the DCA fader is added to the fader value SL (i, j) of each input channel i in the group. The added value becomes the level of the second output signal of each input channel i in the group. For example, the user can set in advance or appropriately whether or not each of the plurality of DCA groups g belongs to each of the plurality of DCA groups g for each input channel i on a touch screen or the like. The operation unit 17 receives the adjustment level of the sound signal of the output channel j in each input channel i of the group from the fader corresponding to each input channel i. This allows the user to adjust the level of the sound signal for the entire group with the DCA fader while maintaining the volume balance between the channels.

FIG. 9 is a flowchart showing the operation of the sound signal processing device 1 of the input channel i according to the modification 3. The sound signal processing device 1 of the third modification controls the second output signal by using the DCA function.

A value corresponding to the fader position of the fader 611 on the operation panel 6 is accepted as the fader value SL (i, j) (step S31). It is determined whether or not the input channel i is included in the DCA group g (step S32). When the input channel i is included in the DCA group g (step S32: Yes), the value obtained by adding the fader value SL (i, j) and the DCA fader value DCA (g) is the gain value CV of the second output signal. (I, j) (step S33).

On the other hand, when the input channel i is not included in the DCA group g (step S32: No), the fader value SL (i, j) is set as the gain value CV (i, j) of the second output signal (step S34). ..

As a result, in the sound signal processing device 1 and the sound signal processing method of the third modification of the present embodiment, the user can adjust the sound signal level of the entire group by the DCA fader while maintaining the volume balance between the channels. ..

1 ... Sound processing device 30 ... Characteristic control circuit 31 ... First level regulator 32 ... Second level regulator 321 ... Level control circuit 322 ... Switching circuit 41 ... First bus 42 ... Second bus T1 ... First threshold value (level) Control threshold)
T2 ... Second threshold (switching threshold)

Claims (11)

The first bus that inputs the first output signal and
The second bus that inputs the second output signal and
With a first level regulator that is electrically connected to the first bus, outputs the first output signal to the first bus, and controls the signal level of the input first input signal based on the adjustment level. ,
An operation unit that receives the adjustment level of the first input signal input to the first level adjuster, and
A second that is electrically connected to the second bus, outputs the second output signal to the second bus, and controls the signal level of the input second input signal in conjunction with the first level regulator. 2 level regulator and
Equipped with a,
When the first output signal output from the first level regulator is smaller than the level control threshold value, the second level regulator is input according to the adjustment level of the first level regulator. It is configured to control the second input signal ,
A sound signal processing device characterized by the fact that. The first bus that inputs the first output signal and
The second bus that inputs the second output signal and
With a first level regulator that is electrically connected to the first bus, outputs the first output signal to the first bus, and controls the signal level of the input first input signal based on the adjustment level. ,
An operation unit that receives the adjustment level of the first input signal input to the first level adjuster, and
A second that is electrically connected to the second bus, outputs the second output signal to the second bus, and controls the signal level of the input second input signal in conjunction with the first level regulator. 2 level regulator and
With
The second level regulator is configured to turn off the second input signal when the first output signal output from the first level regulator is smaller than the switching threshold.
A sound signal processing device characterized by the fact that. The first bus that inputs the first output signal and
The second bus that inputs the second output signal and
With a first level regulator that is electrically connected to the first bus, outputs the first output signal to the first bus, and controls the signal level of the input first input signal based on the adjustment level. ,
An operation unit that receives the adjustment level of the first input signal input to the first level adjuster, and
A second that is electrically connected to the second bus, outputs the second output signal to the second bus, and controls the signal level of the input second input signal in conjunction with the first level regulator. 2 level regulator and
Characteristic control circuit and
With
The characteristic control circuit is electrically connected to the first level regulator, outputs the first input signal to the first level regulator, and is electrically connected to the second level regulator. It is configured to output the second input signal to the two-level regulator.
A sound signal processing device characterized by the fact that. The second level regulator includes a level control circuit that controls the signal level of the second input signal.
The sound signal processing device according to any one of claims 1 to 3, wherein the sound signal processing device is characterized. The second level regulator includes a switching circuit that turns the second input signal on and off.
The sound signal processing device according to any one of claims 1 to 4, wherein the sound signal processing device is characterized. The characteristic control circuit has a compression circuit and has a compression circuit.
The second level regulator is electrically connected to the input side of the compression circuit and is configured to receive a signal input to the compression circuit as the second input signal.
The sound signal processing device according to claim 3. The characteristic control circuit has a compression circuit and has a compression circuit.
The second level regulator is electrically connected to the output side of the compression circuit and is configured to receive a signal output from the compression circuit as the second input signal.
The sound signal processing device according to claim 3. The second input signal is the first output signal output by the first level regulator.
The sound signal processing device according to any one of claims 1 to 5, wherein the sound signal processing device is characterized. The operation unit accepts the adjustment level
Based on the adjustment level, the signal level of the first input signal is controlled by the first level adjuster.
The controlled first input signal is output to the first bus as an output signal, and the first input signal is output to the first bus.
In conjunction with the output signal, the signal level of the second input signal output to the second bus is controlled by the second level adjuster.
When the output signal output from the first level regulator is smaller than the level control threshold value, the second input input to the second level regulator according to the adjustment level of the first level regulator. Control the signal,
A sound signal processing method characterized by the fact that. The operation unit accepts the adjustment level
Based on the adjustment level, the signal level of the first input signal is controlled by the first level adjuster.
The controlled first input signal is output to the first bus as an output signal, and the first input signal is output to the first bus.
In conjunction with the output signal, the signal level of the second input signal output to the second bus is controlled by the second level adjuster.
When the output signal output from the first level regulator is smaller than the switching threshold value, the second input signal is turned off.
A sound signal processing method characterized by the fact that. The operation unit accepts the adjustment level
Based on the adjustment level, the signal level of the first input signal is controlled by the first level adjuster.
The controlled first input signal is output to the first bus as an output signal, and the first input signal is output to the first bus.
In conjunction with the output signal, the signal level of the second input signal output to the second bus is controlled by the second level adjuster.
The first input signal is output to the first level regulator from the characteristic control circuit electrically connected to the first level regulator.
The second input signal is output to the second level regulator from the characteristic control circuit electrically connected to the second level regulator.
A sound signal processing method characterized by the fact that.

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