JP2018117245A - Sound processing device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform setting for preparing a bus for mixing only tone signals of respective channels belonging to a specific group, without trouble.SOLUTION: A sound processor 10 includes a first bus 11, a second bus 12, multiple channels 13 having a first multiplier 14 for delivering a sound signal to the first bus 11 while controlling the level with a first gain and a second multiplier 15 for delivering a sound signal to the second bus 12 while controlling the level with a second gain, and a supply section 18 for supplying a parameter to each channel. The supply section 18 executes group setting processing 16 for forming a group consisting of some of the multiple channels in response to a grouping instruction, and performing group operation, and collective setting processing 17 for setting the second gain of a channel belonging to some group to the same value as the first gain of that channel, in response to a collective setting instruction, and setting the second gain of each channel not belonging to that group to mute.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sound processing apparatus and method suitable for use in, for example, an audio mixer.

  An audio mixer (hereinafter also referred to as a “mixer”) is basically used to control various characteristics and adjust the level of an input sound signal in each of a plurality of input channels (hereinafter abbreviated as “ch”). Signal processing is performed, the processed sound signal is mixed in the main bus of the main output system, the mixed sound signal is processed in the main bus ch corresponding to the main bus, and the processed sound signal is processed into the main speaker. And so on.

  A conventional mixer has a group function in which a plurality of input channels are grouped and one or more parameters of each input channel belonging to the group are controlled by one operator. For example, in the DCA group, the user can adjust the level of each of the plurality of input channels belonging to the DCA group while maintaining the level difference between the input channels by operating one DCA fader. This function is convenient, for example, when adjusting the level of one drum set. In addition to the DCA group function for controlling the level, the mute group function for controlling mute on / off, or a desired part of a plurality of parameters such as a head amplifier, an equalizer, and a compressor can be operated for the group function. There are various types such as a ch link function (see, for example, Non-Patent Document 1 and Non-Patent Document 2 below).

  However, the conventional group function only controls the parameters of each input channel belonging to a specific group with one operator. Therefore, in the conventional group function, an equalizer, a compressor, a reverb, a spatial localization control, etc. are performed on a mixed sound signal (in other words, a sum sound signal of a plurality of grouped sound signals) of one group of sound signals. Signal processing could not be performed. If the processing is as light as level control or on / off control, the sound signals are processed by the existing multiplier resources of each input channel and mixed in the main bus, thereby affecting the signals of buses other than the main bus. However, the signal processing (predetermined signal processing) exemplified here cannot be processed using resources of each input channel without affecting the buses other than the main bus.

  In the prior art, complicated settings are required to perform signal processing on the entire sound signal of one group. Specifically, first, the sound signal transmission from each input channel belonging to a group to the main bus is turned off, and then a bus for mixing the sound signals of each input channel belonging to the group is prepared, The transmission of the sound signal from each input channel to the bus is turned on, and the transmission of the sound signal from the bus ch corresponding to the bus to the main bus is turned on. After such complicated work, finally, various signal processing for the mixed sound signal of the sound signals of each input channel belonging to a certain group can be performed on the bus channel corresponding to the prepared bus. Is done. In addition, after this setting, when the “signal processing for the mixed sound signal” is stopped and the bus and the bus ch are to be used for another purpose, the work opposite to the above work, that is, the bus ch Is turned off, the sound signal from each input channel belonging to the group to the bus is turned off, and the sound signal from each input channel to the stereo bus is turned on. Is necessary.

"DIGITAL MIXING CONSOLE M7CL Version3 M7CL-32 / M7CL-48 / M7CL-48ES Instruction Manual", [online], May 2014, Yamaha Corporation [searched August 29, 2016], Internet <URL: http : //download.yamaha.com/api/asset/file/? language = en & site = ae.yamaha.com & asset_id = 47575> "DIGITAL MIXING CONSOLE LS9 LS9-16 / LS9-32 Instruction Manual", [online], 2012, Yamaha Corporation [searched on August 29, 2016], Internet <URL: http: //download.yamaha. com / api / asset / file? language = en & site = countrysite-master.prod.wsys.yamaha.com & asset_id = 58273>

  The present invention has been made in view of the above points. For predetermined signal processing, only the sound signals of a plurality of channels belonging to a specific group among the sound signals of a plurality of channels mixed in the main bus are mainly processed. It is an object of the present invention to provide a sound processing apparatus and method which can be easily set without taking time and effort to take out from a bus and mix at the same mixing level in another bus.

  The present invention relates to a first bus for mixing sound signals, a second bus for mixing sound signals, a first characteristic control unit for controlling the characteristics of one sound signal in accordance with the adjustment parameters, and a sound signal after the characteristic control A first multiplier for level-controlling according to a first gain and sending it to the first bus, and a second multiplication for level-controlling the sound signal after characteristic control to send to the second bus after level control A plurality of channels having a plurality of channels, and a supply unit that individually supplies a plurality of parameters including the adjustment parameter, the first gain, and the second gain to each channel according to various instructions by a user. When a group consisting of a part is formed, at least one parameter of each channel belonging to the group is collectively controlled, and the group is set according to a batch setting instruction. The second gain of each channel belonging to a group is set to the same value as the first gain of the channel, and the second gain of each channel not belonging to the group is collectively set to a mute value. A sound processing apparatus.

  According to the present invention, since the second gain of each channel belonging to a specific group is set to the same value as the first gain of each channel, each channel belonging to that group is assigned a sound to the first bus. The processed sound signal can be sent to the second bus in the same state as the signal transmission. Further, the second gains of all channels not belonging to the group are set to mute. Therefore, in the second bus, only the sound signals of the channels belonging to the group can be mixed.

  In addition, the present invention may be configured and implemented as an apparatus invention, and may be implemented and configured as a method invention including each component constituting the apparatus.

  According to the present invention, for predetermined signal processing, among the sound signals of a plurality of channels mixed on the main bus, only the sound signals of each channel belonging to a specific group are mixed at the same mixing level on another bus. There is an excellent effect that the setting can be easily performed without trouble.

The conceptual block diagram which shows the structural example of the sound processing apparatus which concerns on this invention. The block diagram which shows the electrical hardware structural example of the audio mixer to which the sound processing apparatus of FIG. 1 is applied. The figure which shows the structural example of the operation panel of an audio mixer. The block diagram explaining the signal processing example of an audio mixer. (A) is a detailed configuration example of an input channel, (b) is a block diagram illustrating a detailed configuration example of a bus channel. The figure explaining the 1st-4th gain concerning this example. The flowchart which shows the process example which adds an input channel to a group. The flowchart which shows the example of a process which removes an input channel from a group. The flowchart which shows the process example according to the fader operation of a channel. The flowchart which shows the process example according to the fader operation of a group. The flowchart which shows the process example according to the batch setting instruction | indication of a group. The flowchart which shows the process example according to the fader operation of the group in a special mode. The flowchart which shows the process example according to the mute inversion operation of a group. The flowchart which shows the process example according to the mute inversion operation of the group in a special mode. The flowchart which shows the process example according to the encoder operation of a channel.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a conceptual block diagram illustrating a configuration example of a sound processing apparatus according to the present invention. In FIG. 1, a sound processing apparatus 10 includes a first bus 11 that mixes sound signals, a second bus 12 that mixes sound signals, and a characteristic control unit 130 that controls the characteristics of one sound signal according to adjustment parameters. And the first multiplier 14 for level-controlling the sound signal after the characteristic control according to the first gain and sending it to the first bus 11, and the sound signal after the characteristic control being level-controlled according to the second gain. 2 includes a plurality of channels (abbreviated as “ch”) 13 having a second multiplier 15 to be sent to the bus 12, and a supply unit 18 for supplying parameters to the plurality of channels. A group setting process 16 for forming a group consisting of a part of a plurality of channels 13 and performing a predetermined group operation on the channels belonging to the group. The second gain of the second multiplier 15 of each channel 13 belonging to the group is set to the same value as the first gain of the first multiplier 14 of the channel, and the group is assigned to the group. A batch setting process 17 for setting the second gain of the second multiplier 15 of each channel 13 not belonging to the mute value is executed.

  According to the sound processing apparatus 10 of FIG. 1, the supply unit 18 sets the same value as the first gain 14 of each ch 13 to the second gain 15 of each ch 13 belonging to a specific group by the batch setting process 17. Further, by setting the second gain 15 of all the channels 13 not belonging to the group to mute, the sound signals of the channels 13 belonging to a specific group among the plurality of channels 13 that have supplied the sound signal to the first bus 11 Are sent to the second bus 12 only. At this time, the sound signals of the respective channels 13 belonging to the group are transmitted to the second bus 12 at the same level as the transmission to the first bus 11 before the batch setting. That is, in the batch setting process 17, the supply unit 18 sends the sound signal of each ch 13 that does not belong to a specific group to the first bus 11, and the sound signal of each ch 13 that belongs to a specific group differs from the first bus 11. The settings to be sent to the second bus 12 are collectively performed for all the channels 13 (operations in steps S13 and S14 described later). After the batch setting, the second bus 12 mixes only the sound signals of the respective channels 13 belonging to a specific group. Therefore, the user uses the bus ch 19 corresponding to the second bus 12, such as an equalizer for the mixed sound signal on the second bus 12 (that is, the sum of the sound signals of each ch 13 belonging to a specific group). Predetermined signal processing can be performed (operations in steps S17, S24, and S25 described later).

  The sound processing apparatus 10 of FIG. 1 can be applied to an acoustic device that handles sound signals such as an audio mixer, for example. In the following embodiment, an example in which the sound processing apparatus 10 is applied to an audio mixer (hereinafter also simply referred to as “mixer”) will be described. The mixer 20 is a digital mixer that processes sound signals exclusively through digital signal processing.

  FIG. 2 is a block diagram showing an example of the electrical hardware configuration of the mixer 20. The mixer 20 includes a CPU (central processing unit) 21, a memory 22, a display 23, an operator group 24, a waveform interface (“waveform I / O”) 25, a signal processing unit 26, and other interfaces (“other I / O”). ”) 27, and the CPU 21 and each of the units 22 to 27 are connected to be communicable.

  The CPU 21 executes various software programs stored in the memory 22 and controls the overall operation of the mixer 20. The CPU 21 is a controller of the mixer 20 (sound processing device 10). Each process of FIGS. 7 to 14 described later is provided by a software program executed by the CPU 21. The memory 22 is configured by appropriately combining various memory devices such as a read-only memory, a random access memory, a flash memory, and a hard disk. The memory 22 stores various programs executed by the CPU 21 and various data in a nonvolatile manner, and is used for a load area and a work area for programs executed by the CPU 21.

  The display 23 displays various information based on the display control signal given from the CPU 21 by various images, character strings, and the like, and includes, for example, a touch panel that can be input by finger contact. The operating element group 24 includes a plurality of operating elements arranged on the operation panel of the mixer 20 and related interface circuits. The user operates the operators of the operator group 24 to perform sound signal path setting, adjustment of various parameter values, and the like. The CPU 21 controls various operations of the mixer 20 in accordance with an input operation on the operator group 24 or the display 23 by the user.

  The mixer 20 receives a plurality of sound signals from an external device (not shown) via a plurality of input ports of the waveform I / O 25, and receives a plurality of sound signals via a plurality of output ports of the waveform I / O 25. Output to an external device not shown. The waveform I / O 25 includes an analog-digital converter, a digital-analog converter, and a digital-digital converter.

  The signal processing unit 26 includes, for example, a DSP (Digital Signal Processor) or a signal processing device virtually realized by a software program stored in the CPU 21 and the memory 22. The signal processing unit 26 performs signal processing on one or a plurality of sound signals input from the outside via the waveform I / O 25 by executing a signal processing program, and the processed sound signals are Output to the outside via the waveform I / O 25. The signal processing includes mixing processing, characteristic control processing, level control processing, and the like as shown in FIGS. This signal processing is controlled based on the values of various parameters stored in the memory 22.

  The other I / O 27 includes a USB interface, and the mixer 20 can connect peripheral devices such as a personal computer via the other I / O 27.

  FIG. 3 shows a configuration example of an operation panel in which the display 23 and the operator group 24 are arranged. The operation panel includes a plurality of (for example, eight) ch strips 30 and first bus ch strips 31. Each ch strip 30, 31 includes a fader 32, an encoder 33 to which an arbitrary parameter can be assigned, a CUE key 34, a ch on / off key 35, and a SEL key 36. For example, the fader 32 is an electric fader capable of controlling the position of the knob portion by the CPU 21.

  As an example, the mixer 20 has 32 input channels with channel numbers 1 to 32. The “layer 1” key 40, “layer 2” key 41, “layer 3” key 42, and “layer 4” key 43 are operated by the user to assign eight input channels to be operated to the eight channel strips 30. Key. Eight ch strips 30 are assigned eight channels of one layer corresponding to one operated key 40 to 45.

  In accordance with the key operated by the user, for example, the input channel of channel numbers 1 to 8 is input by the “Layer 1” key 40, the input channel of channel numbers 9 to 16 is input by the “Layer 2” key 41, and “ An input channel of channel numbers 17 to 24 is assigned to the channel strips 30 by the “Layer 3” key 42, and an input channel of channel numbers 25 to 32 is assigned to the 8 channel strip 30 by the “Layer 4” key 43. In addition, a first bus ch (reference numeral 54 in FIG. 4), which will be described later, is fixedly assigned to the master ch strip 31 as an operation target.

  The “DCA” key 44 is operated by the user in order to assign eight DCA groups of the DCA layer to each ch strip 30. Each DCA group is a group to which a plurality of input channels belong. When the DCA group is assigned, the operators 32 to 36 of the ch strip 30 are used for control as a group of a plurality of input channels belonging to the assigned DCA group. DCA is an abbreviation for “Digital-Controlled Amplifier”.

  The “master” key 45 is operated by the user to assign the eight output channels of the master layer to each channel strip 30.

  Eight bus keys ("B1" to "B8" in the figure) 37 are used to select a second bus ch (reference numeral 55 in FIG. 4) described later. Eight display keys (“D1” to “D8” in the figure) 38 are used to select a screen to be displayed on the display 23. Also, six user-defined keys ("U1" to "U6" in the figure) 39 are used for executing functions assigned by the user (for example, scene switching).

  FIG. 4 is a block diagram equivalently showing an example of signal processing executed by the CPU 21, the waveform I / O 25, and the signal processing unit 26 of FIG. The mixer 20 includes a plurality (32 in the illustrated example) of input channels 51. The input patch 50 supplies any of the sound signals received by the plurality of input ports to the plurality of input channels 51 in accordance with the patch parameters. Each input channel 51 performs processing such as characteristic control and level control (see FIG. 5 described later) on the supplied sound signal, and selectively outputs the processed sound signal to one or a plurality of buses 52 and 53. To do.

  The mixer 20 includes one first bus 52 (corresponding to reference numeral 11 in FIG. 1) and a plurality of (for example, eight) second buses 53 (corresponding to reference numeral 12 in FIG. 1). As a simple example, each of the first bus 52 and each second bus 53 is a monaural bus having a 1ch configuration.

  In this embodiment, the first bus 52 is used to mix sound signals sent to the main output such as a main speaker. The second bus 53 is used, for example, as a bus for mixing sound signals of a plurality of input channels belonging to one group in a batch setting process described later. The second bus 53 may be a bus that always exists, or may be a temporary bus generated by a batch setting process described later.

  The buses 52 and 53 respectively mix a plurality of supplied sound signals, and the first bus ch 54 and the second bus ch 55 corresponding to the buses 52 and 53 are mixed sound signals from the corresponding buses 52 and 53, respectively. Are subjected to processing such as characteristic control and level control (see FIG. 5 described later). The output patch 56 supplies any one of the plurality of sound signals processed by the plurality of bus channels 54 and 55 to each output port according to the patch parameter, and each output port outputs the supplied sound signal to the outside. To do.

  Further, the user can insert a desired insertion effector 57 (“Ins. EF”) at desired insertion points of the channels 51, 54, and 55. The insertion effector 57 inserted at a certain insertion point is used for the insertion effector. The sound signal supplied to the insertion point is subjected to the effect processing according to the parameters and returned to the insertion point.

  FIG. 5A shows an example of components of one input ch 51, and FIG. 5B shows an example of components of the first bus ch 54 and one second bus ch 55. The variable “i” represents the channel numbers “1” to “32” of the input channel. The variable “j” is the channel number of the bus ch, and j = 0 represents the first bus ch54, and j = 1-8 represents each second bus ch55. In addition, the value of each parameter that controls each element of the sound signal described below is stored in the memory 22.

  The characteristic controller 60 (reference numeral 130 in FIG. 1) of the input ch (i) controls the characteristic of the sound signal supplied to the input ch (i) according to various parameters CP1 (i) to CPN (i). The characteristic control unit 60 includes one or more various characteristic control units such as an equalizer (“EQ”), a compressor (“COMP”), and the like, and an insertion point for the insertion effector 57 in series with the characteristic control unit ( The volume 61 (“CV”) controls the level of the sound signal after the characteristic control according to the parameter CV (i). Further, the ch switch 62 (“CO”) supplies a level-controlled sound signal to the switches 63 and 64 if the parameter CO (i) is on, and a silent sound signal to the switch 63 if it is off. , 64 (that is, a sound signal including sound is not supplied to the switches 63, 64). The volume 61, the switch 62, and the switch 63 as a whole are a first multiplier that multiplies one sound signal by one coefficient corresponding to the parameters CV (i), CO (i), and To # 1 (FIG. 1). 14). The first bus transmission switch 63 (“To # 1”) supplies the sound signal from the ch switch 62 to the first bus 52 if the parameter To # 1 (i) is on, and if the parameter To # 1 (i) is off, The sound signal is not supplied to the first bus 52.

  The input ch (i) further corresponds to each of the eight second buses (j), and a pre / post switch 64 (“PP”), a send volume 65 (“SV”), and a second bus transmission A switch 66 (“To # 2”) is provided. The pre / post switch 64 selects either the pre signal before the volume 61 or the post signal after the ch switch 62 according to the parameter PP (i, j), and supplies it to the send volume 65. The send volume 65 controls the level of the supplied sound signal in accordance with the parameter SV (i, j) and supplies it to the second bus transmission switch 66. The second bus transmission switch 66 supplies the supplied sound signal to the second bus (j) if the parameter To # 2 (i, j) is on, and outputs the sound signal if it is off. Do not supply to the second bus (j). As a whole, the volumes 61 and 65 and the switches 62, 64, and 66 have parameters CV (i), CO (i), PP (i, j), SV (i, j), To # 2 for one sound signal. It can be regarded as a second multiplier (reference numeral 15 in FIG. 1) that multiplies one coefficient according to (i, j).

  Further, as shown in FIG. 5B, the first bus ch 54 and the second bus ch 55 are input except that the first bus ch 54 does not have the first bus sending switch 77 (“To # 1”). The configuration is the same as ch (i). The characteristic control units 70 and 71 control the characteristics of the sound signals mixed in the corresponding buses 52 and 53 according to various parameters BP1 (j) to BPN (j), respectively. Volumes (“BV”) 72 and 73 respectively control the level of the sound signal after the characteristic control according to the parameter BV (j). In the ch switches (“BO”) 74 and 75, if the parameter BO (j) is on, the level-controlled sound signal is supplied to the output patch 56, and if it is off, the sound signal is sent to the output patch 56. Do not supply. Volumes 72 and 73 and switches 74 and 75 can be regarded as a fourth multiplier that multiplies one sound signal by one coefficient corresponding to parameters BV (j) and BO (j). Further, the first bus transmission switch 77 (“To # 1”) of the second bus ch (j) 55 receives the sound signal from the switch 75 when the parameter To # 1 (j) is on. If the signal is off, the sound signal is not supplied to the first bus 52. The volume 73, the switch 75, and the switch 77 as a whole are a third multiplier that multiplies one sound signal by one coefficient corresponding to the parameters BV (j), BO (j), and To # 1 (j). I can think of it.

  5A and 5B, for a plurality of elements (for example, CV 61 and CO 62) surrounded by a dotted line, one coefficient is generated by the CPU 21 based on each parameter of these elements, and the signal processing unit 26 Multiplies the sound signal by the generated coefficient. That is, a plurality of elements surrounded by a dotted line correspond to one multiplication of the signal processing unit 26.

  FIG. 6 shows an example of gains of the first to fourth multipliers that control the level of the sound signal. In the case of the configuration example of the input channel 51 shown in FIG. 5A, the first gain “G1” of the first multiplier that controls the level of the sound signal sent from the certain input channel (i) 51 to the first bus 52. i) "(14 in FIG. 1) is the sum of CV (i), CO (i), and To # 1 (i). The variable i of G1 (i) takes any one of ch numbers 1 to 32. Further, the second gain “G2 (i, j)” of the second multiplier for controlling the level of the sound signal sent from a certain input ch (i) 51 to a certain second bus (j) 53 (FIG. 1). In the case of sending a post signal to the second bus (j) (PP (i, j) = 0), CV (i), CO (i), SV (i, j) and To # 2 (I, j), and when a pre-signal is sent to the second bus (j) (PP (i, j) = 1), CV (i), CO (i), SV (i, j) and To # 2 (i, j). The variable i of G2 (i, j) takes any one of ch numbers 1 to 32, and the variable j takes any one of bus ch numbers 1 to 8.

  The third gain “G3 (j)” of the third multiplier for controlling the level of the sound signal sent from the certain second bus ch (j) 55 to the first bus 52 is BV (j), BO This is the sum of (j) and To # 1 (j) (see FIG. 7). The variable j of G3 (j) takes one of the bus numbers 1 to 8 of the eight second buses 53. The fourth gain “G4 (j)” of the fourth multiplier that controls the level sent from the first bus ch (j = 0) 54 or a certain second bus ch (j) 55 to the output patch 56 is: It is the sum of BV (i) and BO (i). The variable j of G4 (j) takes any of bus numbers 0-8.

  Here, each of the parameters CV (i), SV (i), BV (j), CO (constituting the above-mentioned various gains G1 (i), G2 (i, j), G3 (j), G4 (j). The values of i), To # 1 (i), To # 2 (i, j), and To # 1 (j) are expressed in units of decibels (abbreviated as “dB”). The values of CV (i), SV (i) and BV (j) for level control take values in a continuous range from “−∞ dB” to an upper limit value (for example, “+10 dB”), and are “0 dB”. The level of the input sound signal is not changed when (reference level), and the sound signal is muted when the mute value is “−∞ dB”. Also, the values of CO (i), To # 1 (i), To # 2 (i, j), and To # 1 (j) for the switch should be “0 dB” if the switch is on, and off. Takes the value of “−∞ dB”. In the addition of a plurality of parameters, if any parameter is “−∞ dB”, the result is “−∞ dB” even if any other parameter is added. That is, the sound signal of the corresponding ch is muted and unmuted according to each CO (i), To # 1 (i), To # 2 (i, j), and To # 1 (j).

  The signal processing shown in FIGS. 4 and 5 basically processes the input sound signal for each input ch (i) and mixes the processed sound signal in the first bus 52 of the main output system. The mixed sound signal is processed by the first bus ch 54 and then output from the main speaker or the like. The user uses the “layer 1” key 40, “layer 2” key 41, “layer 3” key 42 or “layer 4” key 43 to input ch (i) to each of the plurality of ch strips 30 on the operation panel. Can be assigned. Then, the user can adjust the values of various parameters (see FIG. 5A) of the input ch (i) assigned to the ch strip 30 using the operators 32 to 36 of the ch strip 30. Further, the user can adjust the values of various parameters (see FIG. 5B) of the first bus ch 54 using the operators 32 to 36 of the first bus ch strip 31.

  Further, the user assigns eight DCA groups (g) of the DCA layer to the eight ch strips 30 using the “DCA” key 44. In this case, the user can collectively adjust the parameters of the input channels belonging to the DCA group assigned to the ch strip 30 using the operators 32 to 36 of the ch strip 30. Such a group function has been conventionally used. In this embodiment, this group function will be described using an example of a DCA group. In this mixer 20, either the normal mode or the special mode is selected by the user or automatically for each DCA group (g), and the CPU 21 relates to the DCA group (g) in the normal mode. The same control as that of the conventional DCA group is performed, and control different from the control is performed for the DCA group (g) in the special mode. The variable “g” is a group number for identifying the group.

  The user is not limited to DCA, and can generally define a group composed of an arbitrary plurality of channels as a group used for the group function. 7 and 8 are flowcharts for explaining an example of group definition processing in response to a grouping instruction by the user. FIG. 7 is an example of processing for adding a certain input ch (i) to a certain group (g). FIG. 8 shows an example of processing for excluding a certain input ch (i) from a certain group (g). The variable “g” is a group number for identifying the group. The “grouping instruction” is an instruction given by the user to define the group ch of the group. For example, on the display 23, the target group (g) and the input ch (i) to be added or excluded are designated. Any operation such as operation may be performed.

  In response to an instruction by the user to add a certain input ch (i) to a certain group (g), the CPU 21 adds the input ch (i) to the list (g) of the group (FIG. 7). Step S1). Further, in response to a user instruction to exclude a certain input ch (i) from a certain group (g), the CPU 21 excludes the input ch (i) from the list (g) of the group (FIG. 8 step S2).

  The list (g) is a list in which information (for example, ch numbers) specifying all input ch (i) belonging to the group (g) is registered. The memory 22 stores a list (g) of each of the plurality of groups (g).

  A plurality of desired inputs ch (i) can be added to the desired group (g) by the processing of S1 and S2, and the desired input ch (i) can be removed from the desired group (g). One group of desired input channels 51 among the input channels 51 is formed. For example, a user can form multiple DCA groups (eg, up to 8 groups). In this embodiment, for the sake of simplicity, it is assumed that one input ch (i) belongs to only one DCA group (g).

  Next, processing performed by the CPU 21 of the mixer 20 in accordance with the operation of the operators 32 to 36 of the ch strip 30 will be described. FIG. 9 is a flowchart showing the level adjustment process executed by the CPU 21 when the fader 32 of the ch strip 30 to which a certain input channel (i) is assigned is operated. In step S <b> 3, the CPU 21 sets a gain value corresponding to the knob position of the operated fader 32 in the parameter FD (i) of the input ch (i) stored in the memory 22. The gain value corresponding to the knob position of the fader 32 is expressed in decibels. For example, when the knob position is at a predetermined reference position, the reference level (“0 dB”), and when the knob position is at the lowest end, “−∞ dB”. The upper limit is set to the upper limit (for example, “+10 dB”). The memory 22 stores FD (i) for each input ch (i).

In step S4, the CPU 21 checks whether or not the input ch (i) belongs to the group based on a list (g) for each group described later. When the input ch (i) does not belong to any DCA group in the normal mode (described later) (No in step S4), in step S5, the CPU 21 determines that the set FD (i) is the input ch. The parameter CV (i) of (i) is set. As a result, the CV (i) of the input ch (i) stored in the memory 22 is changed. The signal processing unit 26 supplies the changed CV (i) to the ch volume 61 of the input ch (i) and controls the level of the sound signal of the input ch (i).
In the volume 61 processing, the level of the sound signal of the input ch (i) is controlled according to the changed CV (i).

  On the other hand, when the input channel (i) subjected to the fader operation belongs to any DCA group (g) (Yes in step S4), the CPU 21 sets the FD (i) corresponding to the fader operation in step S6. The DCA group is added to the parameter DCA (g) indicating the level of the DCA group, and the sum of the FD (i) and DCA (g) is set in the CV (i) of the input ch (i). The memory 22 stores DCA (g) for each DCA group (g). The signal processing unit 26 supplies the changed CV (i) to the ch volume 61 of the input ch (i) and controls the level of the sound signal of the input ch (i). Although the DCA group has been described here, the process of linking some parameters between input channels of groups other than DCA may be the same as the process of FIG. 9 or may be as shown in FIG.

  FIG. 10 is a flowchart showing a processing example executed by the CPU 21 when the DCA fader 32 of a certain DCA group (g) in the normal mode is operated. In step S <b> 7, the CPU 21 sets a gain value corresponding to the knob position of the DCA fader 32 in the parameter DCA (g) of the DCA group (g) stored in the memory 22.

  In step S8, the CPU 21 calculates the value of CV (i) of each input ch (i) belonging to the DCA group (g) based on the set DCA (g). Specifically, as in step S4, the set DCA (g) is added to the FD (i) of a plurality of input channels (i) belonging to the DCA group (g), and the sum is The parameter CV (i) of the input ch (i) is set. As a result, the CV (i) of each input ch (i) belonging to the DCA group (g) is changed. The signal processing unit 26 controls the level of the sound signal according to the changed CV (i) in the volume 61 processing of each input ch (i) belonging to the DCA group. As a result, the level of each input ch (i) belonging to the DCA group (g) changes by the amount of operation of the DCA fader 32 performed this time while maintaining the level difference between them. For example, DCA (g) is 1 dB, FD (1) = “1 dB”, FD (2) = “− 2 dB”, and FD (3) = “0 dB” of three input channels of a certain DCA group (g) In this case, CV (1) is “2 dB”, CV (2) is “−1 dB”, and CV (3) is “1 dB”.

  The level adjustment processing of each input channel (i) belonging to the DCA group (g) by the processing of FIG. 10 is convenient when adjusting the level of one set of drums, for example. More specifically, if a plurality of input channels to which sound signals of a plurality of musical instruments constituting one drum set are supplied as one DCA group, a layer of the input channel is assigned to the ch strip 30 and the channel While adjusting the level balance of the instrument sounds of the multiple musical instruments of the drum set for each input channel with a strip, assigning a DCA layer to the channel strip 30 and operating the fader 32 of the DCA group with the channel strip allows input. While maintaining the level balance of individual instrument sounds adjusted in the channel layer, the levels of these instrument sounds can be adjusted together with the DCA fader. However, in the level adjustment processing for each DCA group (g) in FIG. 10, the instrument sound level of each input ch (i) belonging to the DCA group (g) is adjusted according to the operation of one DCA fader 32. It is only done. When the user wants to perform signal processing on the entire sound signal of one DCA group (g) (that is, the mixed sound signal of each input ch (i) belonging to the DCA group (g)), the user is all in the DCA group (g). For the input ch (i) of the input signal, the transmission of the sound signal to the first bus 52 of the main output system is muted and transmitted to the second bus 53 at the same level (same as the transmission level to the first bus before mute). It is necessary to make settings for each channel. In the mixer 20 according to this embodiment, only the input ch (i) belonging to a specific group (g) among all the channels is excluded from the mixing in the first bus 53, and at the same level in the second bus 53. One feature is that the setting for mixing is performed collectively in response to one instruction. In this specification, the setting performed collectively is referred to as “collective setting”.

  FIG. 11 is a flowchart illustrating an example of processing performed by the CPU 21 in response to a batch setting instruction from the user. In the batch setting instruction, one DCA group (g) is designated. Further, the second bus (j) used for mixing sound signals of a plurality of input channels of the DCA group (g) may be designated. For example, the user can press the bus key 37 corresponding to one of the second buses (j) while pressing the SEL key 36 of the ch strip 30 to which one DCA group (g) is assigned. It is issued by. Since the second bus (j) and the second bus ch (j) have a one-to-one correspondence, the designation of one target second bus (j) is assigned to the second bus (j). This is substantially equivalent to the designation of the corresponding second bus ch (j).

  In step S9, the CPU 21 displays an execution confirmation dialog for reconfirming the execution or cancellation of the batch setting to the user on the display 23. When the user gives an instruction to cancel (No in step S10), the CPU 21 End the process. When the execution is instructed by the user (Yes in step S10), the CPU 21 sets “−∞ to BV (j) of the second bus ch (j) corresponding to the designated second bus (j) in step S11. dB ”is set, and the signal processing unit 26 once mutes the sound signal of the second bus ch (j). At this time, the CPU 21 may gradually lower the value of BV (j) to “−∞ dB” and cause the signal processing unit 26 to fade out the sound signal.

  In step S12, the CPU 21 resets the values of the various parameters BP1 (j) to BPN (j) of the characteristic control unit 71 of the designated second bus ch (j) to settings for sound signal through. The setting for sound signal through includes, for example, setting EQ to a flat frequency characteristic, and setting the threshold value of the compressor to a maximum value. With this setting, in the signal processing unit 26, the characteristic control unit 60 of the second bus ch (j) outputs the sound signal without changing the characteristic.

  In step S13, the CPU 21 sets parameters for the first bus and the second bus (j) as follows for each input ch (i) belonging to the designated DCA group (g). That is, the value of To # 1 (i) of the input ch (i) is set in To # 2 (i, j) of the input ch (i), and the To # 1 (i) of the input ch (i) is set. ) Is set to OFF = “− ∞ dB”, PP (i, j) of the input ch (i) is set to “post”, and the second specified from the input ch (i) is set. “0 dB” is set in SV (i, j) to the bus (j). Thus, the second gain of the sound signal to the second bus (j) designated from each input ch (i) belonging to the DCA group (g) in the signal processing unit 26 is G2 (i, j) = CV (I) + CO (i) + “0 dB” + To # 1 (i), and the first gain G1 (j) = CV (i) + CO (i) of the input ch (i) immediately before (step S13 execution) It is set to the same value as + To # 1 (i). Since To # 1 (i) is off, the first gain of the same sound signal is “−∞ dB”, and the signal processing unit 26 applies the first gain from each input ch (i) belonging to the DCA group (g). Transmission of the sound signal to the bus 52 is turned off (muted).

  In step S <b> 14, the CPU 21 performs the following parameter setting for each input ch (i ′) that does not belong to the designated DCA group (g). That is, OFF = “− ∞ dB” is set for To # 2 (i ′, j) from the input ch (i ′) to the second bus (j), and “−∞ is set for SV (i ′, j). “dB” is set (or if only one is set to “−∞ dB”, the other can have any value). Thus, the second gain of the sound signal from each input ch (i ′) not belonging to the designated DCA group (g) to the second bus (j) is G2 (i ′, j) = CV (i ′ ) + CO (i ′) + “− ∞ dB” + “− ∞ dB” or G2 (i ′, j) = “− ∞ dB” + “− ∞ dB”, that is, the mute value (−∞ dB) ). Accordingly, in the signal processing unit 26, the transmission of the sound signal from each input ch (i ′) not belonging to the designated DCA group (g) to the designated second bus (j) is turned off (muted). .

  In step S15, the CPU 21 sets “0 dB” to BV (j) of the designated second bus ch (j), and BO (j) and To # 1 ( Set j = ON = "0 dB". As a result, in the signal processing unit 26, the third gain of the sound signal transmitted from the designated second bus ch (j) 53 to the first bus 52 is turned on “0 dB” (that is, a non-mute value). At this time, the CPU 21 may gradually increase the value of BV (j) from “−∞ dB” to “0 dB”, and cause the signal processing unit 26 to fade in the sound signal.

  Only the sound signals of the input channels (i) belonging to the designated DCA group (g) are removed from the mixing in the first bus 52 by the collective setting process of FIG. 11, and the designated second bus (j) 53, mixing is performed at the same mixing level as the original mixing level in the first bus 52, and the mixing result is set to be sent to the first bus 52 via the second bus ch (j) 55. (See FIGS. 4 and 5B). On the other hand, each input ch (i ′) that does not belong to the designated DCA group (g) does not change from before the batch setting except that the transmission to the designated second bus (j) is muted. The sound signal sent to the 1 bus 52 is sent to the first bus 52 as before the batch setting. This batch setting process can be applied to groups other than DCA as they are.

At the end of the batch setting process, the second gain G2 (i, j) of each input ch (i) belonging to the designated DCA group (g) is the first gain G1 (i) of that input ch (i). Therefore, there is no change in the mixing level of each sound signal of the DCA group (g) included in the mixing result of the first bus 52 (the output signal of the first bus ch54) before and after the batch setting. . In step S13, To # 2 (i, j) of each input ch (i) belonging to the designated DCA group (g) is set to the same value as To # 1 (i) before the batch setting. Therefore, for example, the ON / OFF setting of the sound signal from each input ch (i) belonging to the designated DCA group (g) to the second bus (j) is set to each input ch ( The sound signal on / off setting from i) to the first bus 52 is taken over. Therefore, among the input channels (i) belonging to the DCA group (g), the input channel (i) for which the user has set the transmission of the sound signal to the first bus 52 off is set after the collective setting. As intended for the bus transmission off setting, the transmission of the sound signal to the second bus (j) is turned off.
Therefore, at the end of the batch setting process in FIG. 11, the sound signal output from the first bus ch 54 (mixed sound signal of the first bus 52) output from the main speaker or the like is the same as that before the batch setting. It should be noted that the sound signal of each input ch (i) belonging to the designated DCA group (g) for a very short time during which steps S11 to S15 in FIG. 11 are performed is transmitted from the first bus ch 54 output from the main speaker or the like. The sound signal is interrupted, but it will be restored soon. In the signal processing of the signal processing unit 26, the timing of mute “−∞ dB” of the sound signal from each input ch (i) to the first bus 52 in step S13 and the second bus ch ( j) The ON timing of the sound signal from 53 to the first bus 52 may be matched with the timing of “0 dB” to prevent the interruption.

  After the batch setting process of FIG. 11, the DCA group is switched from the normal mode to the special mode, so that the designated first DCA fader 32 of the ch strip 30 to which the designated DCA group (g) is assigned is designated. BV (j) of 2 buses ch (j) may be assigned. In the special mode, for each input ch (i) belonging to the DCA group (g), the value of FD (i) is directly used as the volume CV (i), and in the designated second bus ch (j), DCA ( The value of g) is directly used as the volume BV (j). When the user operates the DCA fader 32, the value of the BV (j) changes. FIG. 12 shows an example of processing executed by the CPU 21 when the DCA fader 32 of the designated DCA group (g) is operated by the user after batch setting in the processing of FIG. 11 and switching to the special mode. It is a flowchart to show.

  In step S <b> 16, the CPU 21 sets a gain value corresponding to the knob position of the operated DCA fader 32 in the DCA (g) of the DCA group (g) stored in the memory 22. In step S17, the CPU 21 sets the value of the DCA (g) to the BV (j) of the second bus ch (j) corresponding to the designated second bus (j) of the DCA group (g). To do. When the DCA group (g) is in the special mode, the value of BV (j) of the designated second bus ch (j) changes according to the DCA fader 32 by the user. When the value of BV (j) changes, the third gain G3 (j) of the second bus ch (j) and the fourth gain G4 (j) of the second bus ch (j) change. The signal processing unit 26 controls the level of the sound signal of the second bus ch (j) according to BV (j) set in step S17.

  For the desired DCA group (g), the user simply designates the second bus used for mixing the sound signals and performs “batch setting instruction”, and the desired 1DCA group (g) of all the input channels of the mixer It is possible to set so that only the sound signal of the input channel is mixed on the designated second bus (j) (steps S13 and S14). Further, in the special mode, the user operates the DCA fader 32 of the DCA group (g) to operate the DCA group (g) mixed sound signal (that is, the DCA group ( The level of the mixed sound signal of each input ch (i) belonging to g) can be adjusted (step S17).

  For the ch strip 30 of the DCA group (g) that has not been switched to the special mode (that is, in the normal mode), the CPU 21 performs a normal DCA group control operation. That is, according to the operation of the DCA fader 32 of the DCA group (g), the CPU 21 changes the CV (i) of each of the plurality of input channels (i) belonging to the DCA group (g) (FIG. 10). S7, S8).

  The operation of the mute group and the DCA group has a function of switching the CO (i) of the ch switch 62 of each input ch (i) belonging to the group at a time. FIG. 13 is a flowchart showing an example of processing executed by the CPU 21 in response to an operation of the ch on / off key 35 of the ch strip 30 to which a certain DCA group (g) is assigned. In step S18, the CPU 21 inverts the mute value ("MUTE (g)" in the figure) of the operated group (g). MUTE (g) is a parameter for controlling mute / unmute of each group (g), and the value of MUTE (g) for each group (g) is stored in the memory 22.

  When MUTE (g) is set to mute release (Yes in step S19), the CPU 21 turns on CO = i of each of the plurality of input channels (i) belonging to the DCA group (g) = “0 dB”. Set (step S20). When MUTE (g) is set to mute (No in step S19), the CPU 21 turns off CO (i) of each input ch (i) belonging to the DCA group (g) = “− ∞ dB”. (Step S21). Through steps S20 and S21, the CO (i) value of each of the plurality of input channels (i) belonging to the group (g) is changed. The signal processing unit 26 controls supply / non-supply of the sound signal to the next stage in the ch switch 62 of each input ch (i) belonging to the group (g) according to each changed CO (i).

  When the DCA group (g) is in the special mode, the ch on / off key 35 of the ch strip 30 to which the group (g) is assigned has the second bus ch () designated as the destination of the group (g). j) BO (j) is assigned. The user uses the ch on / off key 35 of the ch strip 30 to switch the value of BO (j) of the designated second bus ch (j), and thereby the sound signal of the designated group (g). It is possible to mute / unmute (mixed result of each input ch (i) belonging to group (g)). FIG. 14 is a flowchart showing an example of processing executed by the CPU 21 in accordance with the operation of the ch on / off key 35 of the ch strip 30 to which the group (g) switched to the special mode is assigned after the batch setting of FIG. It is. In step S22, the CPU 21 inverts the mute value of the group (g) (“MUTE (g)” in the figure). When MUTE (g) is set to mute release (Yes in step S23), the CPU 21 sets BO (j) of the second bus ch (j) specified in the batch setting to ON = 0 dB (step S23). S24) When MUTE (g) is set to mute (No in step S23), the CPU 21 turns off BO (j) of the designated second bus ch (j) = “− ∞ dB”. (Step S25). Through the steps S24 and S25, the value of BO (j) of the second bus ch (j) is changed. The signal processing unit 26 supplies / not supplies the sound signal in the ch switches 74 and 75 of the second bus ch (j) that processes the mixed sound signal of the group (g) according to the changed value of BO (j). To control.

  In another embodiment, the group operation is a ch link operation that collectively adjusts parameters of various characteristic control units 60 of the input channels belonging to one group. The parameters CP1 (i) to CPN (i) of the various characteristic control units 60 are adjusted using the encoder 33, for example. FIG. 15 is a flowchart showing processing executed by the CPU 21 when the user rotates the encoder 33 of the ch strip 30 to which a certain input channel (i) is assigned. In FIG. 15, a variable p indicates any one parameter of CP1 (i) to CPN (i). In step S30, the CPU 21 sets the rotation data of the knob of the operated encoder 33 in the parameter RD. A parameter RD indicates rotation data of the operated encoder 33. The rotation data indicates the amount of rotation of the knob of the encoder 33. If the user rotates the knob to the right, the rotation data has a positive value, and if the user rotates to the left, the rotation data has a negative value.

  In step S31, the CPU 21 checks whether or not the input ch (i) belongs to the group based on the list (g) for each group. When the input ch (i) does not belong to any group in the normal mode (No in step S31), in step S32, the CPU 21 calculates the sum of CPp (i) and Δp (RD) as the input ch ( Set to CPp (i) of i). Δp indicates the amount of change of the parameter p according to RD. The change characteristic of the parameter p according to RD is defined for each parameter p. The signal processing unit 26 supplies CPp (i) set in step S32 to the characteristic control unit 60 of the input ch (i), and controls the characteristics of the sound signal of the input ch (i).

  When the input ch (i) belongs to any group (g) (Yes in step S31), in step S33, the CPU 21 determines whether the link of the parameter p is valid in the group g. When the link of the parameter p is valid in the group g (Yes in step S33), the CPU 21 adds the sum of CPp (k) and Δp (RD) to the CP (k) of each input ch (k) belonging to the group g. Set. The signal processing unit 26 supplies CPp (k) set in step S33 to the characteristic control unit 60 of each input ch (k) belonging to the group g, and controls the characteristic of the sound signal of each input ch (k). . When the link of the parameter p is not valid in the group g (No in step S33), in the step S32, the CPU 21 sets only CPp (i) of the input ch (i).

  As described above, in the normal group ch link operation, the CPU 21 belongs to the group (g) according to the operation of the encoder 33 of the ch strip to which the input ch (i) belonging to the certain group (g) is assigned. The parameters p of each input ch (k) are adjusted together. On the other hand, after group setting in FIG. 11, when the group (g) is in the special mode, the group (g) is transmitted to the encoder 33 of the ch strip 30 to which the group (g) is assigned. Any one parameter p among BP1 (j) to BPN (j) of the second bus ch (j) specified previously is assigned. In response to the operation of the encoder 33 of the ch strip 30, the CPU 21 sets the rotation data of the knob of the operated encoder 33 to RD, and the designated second amount is changed by the change amount Δp (RD) corresponding to the RD. The value of BPp (j) of bus ch (j) is changed. The signal processing unit 26 supplies the BPp (j) to the characteristic control unit 60 of the second bus ch (j) and controls the characteristics of the sound signal of the second bus ch (j). As a result, the user can operate the EQ and filter for the sound signal of the specific group (g) (the mixed result of the sound signals of the input channels (k) belonging to the group (g)) by operating only one operator. Can be adjusted. Regardless of the embodiment shown here, the group operation is any operation that adjusts at least one parameter of each input ch (k) belonging to one group collectively using one operator. It may be anything. The group operation may be an arbitrary combination of the group operations of the various embodiments described above.

  In the signal processing configuration examples of FIGS. 4 and 5, the example in which both the first bus 52 and the first bus ch 54 are configured as monaural channels has been described. However, the first bus 52 and the first bus ch 54 are respectively stereo. It may be a 2ch configuration. In this case, each input ch (i) has a pan control unit that controls the localization of the stereo signal after the first bus transmission switch 63 (“To # 1”). The first bus ch of the stereo 2ch configuration has the same structure as the first bus ch 54 of FIG. 5B except that it is a stereo 2ch configuration. That is, in the first bus ch of the stereo 2ch configuration, the right ch and the left ch each have a characteristic control unit 70, a volume (“BV”) 72, and a ch on / off (“BO”) 74. Each parameter of each block 70, 72, 74 has the same value for the right channel and the left channel.

  In each of the embodiments described above, the CPU 21 corresponds to the supply unit, steps S1 and S2 performed by the CPU 21 correspond to the group setting process 16, and steps S13 and S14 performed by the CPU 21 correspond to the batch setting process 17. Further, when steps S17, S24, and S25 by the CPU 21 are performed by the user to adjust the first gain of the channels belonging to the group after the collective setting by the collective setting unit, This corresponds to change control processing for changing the third gain of the bus channel instead of the first gain of each channel.

  In the flowcharts of FIGS. 7 to 14, the CPU 21 setting the parameter value includes the CPU 21 changing the parameter value stored in the memory 22.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the claims and the technical idea described in the specification and drawings. Can be modified.

  The present invention can be applied to any sound processing apparatus having a plurality of channels for adjusting sound signals and a plurality of buses for mixing the adjusted sound signals. For example, the sound processing apparatus 10 can be applied to a recorder, an amplifier, a processor, and the like. The sound processing apparatus 10 may be composed of a dedicated hardware device (such as an integrated circuit) configured to execute the operations of the units 11 to 17 illustrated in FIG. Moreover, the sound processing apparatus 10 may be configured by a processor device having a function of executing a program for performing the operations of the units 11 to 17 illustrated in FIG.

  In addition, the present invention can be applied to DAW (digital audio workstation) software applications such as Cubase (registered trademark) and ProTools (registered trademark) software applications or video editing software applications executed on a personal computer. .

  The present invention also relates to a sound processing apparatus comprising a first bus for mixing sound signals, a second bus for mixing sound signals, and a plurality of channels each processing one sound signal. The parameter setting method is executed by each of the channels, a characteristic control unit for controlling the characteristic of one sound signal according to the adjustment parameter, and a sound signal after the characteristic control is sent to the first bus according to a first gain. And a second multiplier for sending the sound signal after characteristic control to the second bus according to a second gain, and according to a grouping instruction by a user, the plurality of channels A group setting procedure for defining a group consisting of a part and performing a predetermined group operation on a channel belonging to the group, and a batch setting instruction by the user The second gain of each channel belonging to the group is set to the same value as the first gain of the channel, and the second gain value of each channel not belonging to the group is set to the mute value. The invention may be configured and implemented as an invention of a method including a collective setting procedure. Further, the steps constituting the method may be configured and implemented as a program invention that causes a computer to execute the steps. Steps S1 and S2 correspond to a group setting procedure, and steps S13 and S14 correspond to a batch setting procedure.

10 sound processing devices, 11 first bus, 12 second bus, 13 channels, 14 first gain, 15 second gain, 16 group setting processing, 17 collective setting processing, 20 mixer, 21 CPU, 22 memory, 23 display, 24 operator group, 25 waveform I / O, 26 signal processor

Claims (6)

A first bus for mixing sound signals;
A second bus for mixing sound signals;
A first characteristic control unit for controlling the characteristic of one sound signal according to the adjustment parameter, a first multiplier for level-controlling the sound signal after characteristic control according to a first gain and sending it to the first bus; and A plurality of channels having a second multiplier for level-controlling the sound signal after the characteristic control in accordance with a second gain and sending it to the second bus;
A supply unit that individually supplies a plurality of parameters including the adjustment parameter, the first gain, and the second gain to each channel according to various instructions by a user, wherein one group including a part of the plurality of channels includes When formed, at least one parameter of each channel belonging to the group is collectively controlled, and in response to a collective setting instruction, the second gain of each channel belonging to the group is changed to the first gain of the channel. And a supply unit that collectively sets the second gain of each channel not belonging to the group to a mute value. A bus channel having a second characteristic control unit for controlling the characteristic of the mixed signal of the second bus, and a third multiplier for controlling the level of the sound signal after the characteristic control according to a third gain and sending it to the first bus Further comprising
In response to the collective setting instruction, the supply unit further sets the first gain of each channel belonging to the group to a mute value and sets the third gain to a non-mute value. The sound processing apparatus according to claim 1. After the collective setting in response to the collective setting instruction, when an instruction to change the first gain values of the channels belonging to the group is given, the supply unit changes the first gain value of each channel. 3. The sound processing apparatus according to claim 2, wherein the value of the third gain of the bus channel is changed instead.   The said supply part changes the said 1st gain of each channel which belongs to the said group collectively according to the level change instruction | indication of the said group, when the said group is formed. The sound processing apparatus as described.   When the group is formed, the supply unit collectively sets the first gain of each channel belonging to the group to a mute value or a non-mute value according to a mute on / off operation of the group. The sound processing apparatus according to claim 1, wherein A parameter setting method executed by a controller of a sound processing apparatus in a sound processing apparatus including a first bus for mixing sound signals, a second bus for mixing sound signals, and a plurality of channels each processing one sound signal The channels each have a first characteristic control unit for controlling the characteristic of one sound signal according to the adjustment parameter, and a first multiplication for sending the sound signal after the characteristic control to the first bus according to a first gain. And a second multiplier for sending the sound signal after the characteristic control to the second bus according to the second gain,
A group setting procedure for defining one group consisting of a part of the plurality of channels in accordance with a grouping instruction by a user, and causing a channel belonging to the group to perform a predetermined group operation;
In response to a collective setting instruction from the user, the second gain of each channel belonging to the group is set to the same value as the first gain of the channel, and the second gain of each channel not belonging to the group is set. And a batch setting procedure for setting a mute value.

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