JP5251731B2 - Mixing console and program - Google Patents

Description

  The present invention relates to a mixing console and a program suitable for use in audio signal adjustment in a concert or the like.

  In mixers used in concerts, etc., multiple audio signals input from microphones etc. are assigned to input channels, and these audio signals are adjusted for sound quality, volume, etc. Is done. The audio signal output from the input channel adjustment unit is output at an arbitrary level to any one of a plurality of “MIX buses”, and the supplied audio signal is mixed in these MIX buses. Here, the gain of the audio signal output from the input channel adjustment unit to the MIX bus is referred to as “send level”. The sound signal mixed in the MIX bus is adjusted again in sound quality, volume, etc. at a location called “MIX output channel”, and the result is emitted through an amplifier and a speaker. Here, assuming that the number of input channels is “128” and the number of MIX buses is “96”, the maximum number of send levels to be adjusted is “128 × 96”. These send levels are individually set by the user using an operator such as a knob. Such a mixer is disclosed in Non-Patent Document 1, for example.

"PM5D / PM5D-RH V2 DSP5D Instruction Manual" Yamaha Corporation, 2004

By the way, the send level from each input channel to each MIX bus can be arbitrarily set by the user, but in a normal operation state, a certain tendency in the send level may be seen. For example, “6” audio signals constituting a 5.1 surround system are assigned to a certain “6” input channel, and a 5.1 surround system is constituted for a certain “6” MIX bus. Assume that “6” signals are assigned. The 5.1 surround system is L (left front), C (center), R (right front), Ls (left surround), Rs (right surround), LFE (low frequency sound effect) "6" system It consists of the signal. In this example, the send level from each input channel to the MIX bus having the same signal type (L, C, R, etc.) (eg, the send level from the L (left front) input channel to the L (left front) MIX bus) ) Is likely to be set to a value near “0” dB. In addition, the send level from each input channel to the MIX bus having a different signal type tends to be set to “−∞”. Therefore, if the send level from each input channel to each MIX bus is set in advance to a value that tends to be adopted in a normal operation state, the required user operation is reduced (for example, the knob rotation angle is reduced). Can be made smaller).
The present invention has been made in view of the circumstances described above, and according to the use of each input channel and MIX bus, by automatically setting an initial value of a send level applied to these, high operability is achieved. The object is to provide a mixing console and program that can be implemented.

In order to solve the above problems, the present invention is characterized by having the following configuration. The parentheses are examples.
In the mixing console according to claim 1, audio signals of a plurality of input channels are appropriately supplied to a plurality of mixing buses (116-1 to 116-96) to appropriately mix the mixing buses (116-1 to 116-96). ) In a send on / off state indicating whether or not to supply the audio signals of the respective input channels to the respective mixing buses (116-1 to 116-96) to the mixing engine (1300) for mixing these audio signals. And an input channel management table (1100) for instructing a send level that is a gain when supplying the audio signal, the input channel management table (1100) capable of classifying the plurality of input channels into a plurality of groups and rewriting the classification state. 300) to store the input channel management table Means (300, 1116), wherein each group is in one of the following categories: mono comprising one input channel, stereo comprising two input channels, and surround comprising three or more input channels. The input channel management table storage means (300, 1116) and the plurality of mixing buses (116-1 to 116-96) to which the system belongs belong to a plurality of groups, and the mixing state management can be rewritten. Mixing bus management table storage means (200, 1116) for storing a table (200), wherein each group includes a monophonic mix comprising one mixing bus, a stereo comprising two mixing buses, and three or more mixings. Any category of surround that consists of buses And a mixing bus management table storage means (200, 1116), and an extraction means (CPU 1114, SP10) for extracting a combination satisfying a predetermined condition from combinations of the input channels and the mixing buses. And an initial value setting means (CPU 1114, SP20) for setting the send level to the mixing bus in the input channel to a predetermined initial value for the extracted combination.
Furthermore, in the configuration according to claim 2, in the mixing console according to claim 1, the two input channels forming the stereo category are input channels of left and right signal types, and The two mixing buses constituting the stereo category are left and right signal type mixing buses, and the initial value setting means (CPU 1114, SP20) is configured such that both the input channel and the mixing bus categories are stereo. For the combination, the send level from the left input channel to the left mixing bus and the send level from the right input channel to the right mixing bus are set to an initial value (“ 1 ”) and the left input channel to the right mixing bus Wherein the the send level and right input channels is to set the send level to the left of the mixing bus to "0" in the linear scale.
Furthermore, in the configuration according to claim 3, in the mixing console according to claim 2, the three or more input channels forming the surround category have at least input signals of left, right and center signal types. And the three or more mixing buses forming the surround category have at least left, right and center signal type mixing buses, and the initial value setting means (CPU 1114, SP20) includes the input channels and For combinations where the mixing bus categories are both surround, the send level from the left input channel to the left mixing bus, the send level from the right input channel to the right mixing bus, and the center input channel Send level to the central mixing bus Set to an initial value (“1”) greater than “0” in near scale, send level from left input channel to right and center mixing bus, and right input channel to left and center mixing bus The send level and the send level from the central input channel to the left and right mixing buses are set to “0” on a linear scale.
Furthermore, in the configuration according to claim 4, in the mixing console according to claim 3, the initial value setting means (CPU 1114, SP 20) is configured such that the category of the input channel is stereo and the category of the mixing bus is surround. For a combination, the send level from the left input channel to the left and center mixing bus and the send level from the right input channel to the right and center mixing bus are greater than “0” on a linear scale. Set to the initial value (“1”, “X21”, “X22”) and linearly set the send level from the left input channel to the right mixing bus and the send level from the right input channel to the left mixing bus. The scale is set to “0”.
Furthermore, in the configuration according to claim 5, in the mixing console according to claim 4, the initial value setting means (CPU 1114, SP 20) is configured such that the category of the input channel is surround and the category of the mixing bus is stereo. For a combination, the send level from the left input channel to the left mixing bus, the send level from the right input channel to the right mixing bus, and the center input channel to the right and left mixing bus Set the send level to the initial value (“X01”, “X02”, “X03”) greater than “0” on the linear scale, and send level and right input from the left input channel to the right mixing bus. Set the send level from the channel to the left mixing bus to “0” on a linear scale. Characterized in that it is intended to.
Furthermore, in the configuration according to claim 6, in the mixing console according to any one of claims 1 to 5, the input channel management table storage means (300, 1116) includes an automatic allocation mode for each input channel. The mixing bus management table storage means (200, 1116) stores the on / off state of the automatic allocation mode for each mixing bus, and sets the initial value. When the means (CPU 1114, SP20) detects a predetermined operation (initialization operation) by the user, the means (CPU 1114, SP20) sets the initial value of the send level for the combination in which both the input channel and the mixing bus automatic allocation modes are on. Set the send on / off status for the combination to off Characterized in that it is intended to set.
In the program according to claim 7, the audio signals of the plurality of input channels are appropriately supplied to the plurality of mixing buses (116-1 to 116-96) to appropriately mix the mixing buses (116-1 to 116-). 96) Send on / off indicating whether or not to supply the audio signals of the respective input channels to the mixing buses (116-1 to 116-96) to the mixing engine (1300) for mixing these audio signals. A program applied to a mixing console (1100) for instructing a state and a send level that is a gain when supplying the audio signal, the mixing console (1100) comprising: a processing device (1114); Classify multiple input channels into multiple groups and rewrite classification status Input channel management table storage means (300, 1116) for storing a possible input channel management table (300), wherein each of the groups is a monophonic unit comprising one input channel, a stereo unit comprising two input channels, And an input channel management table storage means (300, 1116) and a plurality of the mixing buses (116-1 to 116-96) belonging to any of the categories of surround consisting of three or more input channels. Mixing bus management table storage means (200, 1116) for storing a mixing bus management table (200) which can be classified into a plurality of groups and whose classification state can be rewritten, wherein each group has one mixing bus. From a mono, second mixing bus And a mixing bus management table storage means (200, 1116) belonging to one of the categories of surround consisting of three or more mixing buses, and each of the input channels and each of the input channels An extraction process (SP10) for extracting a combination satisfying a predetermined condition from combinations consisting of mixing buses, and for the extracted combination, a send level to the mixing bus in the input channel is set to a predetermined initial value. The initial value setting process (CPU 1114, SP20) is executed by the processing device (1114).

  As described above, according to the present invention, a combination satisfying a predetermined condition is extracted from a combination including each input channel and each mixing bus, and the extracted combination is supplied to the mixing bus in the input channel. Since the send level is automatically set to a predetermined initial value, high operability can be realized.

It is a block diagram of the acoustic system of one Example of this invention. 2 is a block diagram of a console 1100 and an engine 1300. FIG. It is a block diagram of an algorithm implemented in the engine 1300 or the like. It is a block diagram of the principal part of this algorithm. 2 is a plan view of a console 1100. FIG. It is a figure which shows the content of the MIX bus management table. 5 is a diagram showing the contents of an input channel management table 300. FIG. 6 is a diagram illustrating a configuration of a MIX bus setting window 250. FIG. 6 is a diagram showing a configuration of an input channel setting window 350. FIG. It is a flowchart of the initialization process in a present Example. It is operation | movement explanatory drawing of a present Example. It is a figure which shows the content of the send level initial value table. It is a figure which shows the content of the modification of the send level initial value table.

1． Hardware Configuration of Embodiment Hereinafter, a configuration of an acoustic system of an embodiment of the present invention will be described with reference to FIG.
In FIG. 1, reference numeral 1000 denotes an IP network, which transmits digital voice and various control signals as IP packets. Reference numeral 1300 denotes an engine which receives a plurality of channels of audio signals via the IP network 1000, performs processing such as equalizing, mixing, and effects on the audio signals, and converts the resulting plurality of channels of audio signals into an IP packet. And output via the IP network 1000. Reference numeral 1400 denotes a microphone controller, which converts audio signals input from a plurality of microphones 1402 into IP packets and outputs the IP packets to the engine 1300 via the IP network 1000. Reference numeral 1500 denotes an amplifier controller, which converts an IP packet received from the engine 1300 via the IP network 1000 into a digital signal having a predetermined format and supplies the digital signal to a plurality of amplifiers 1502.

  The amplifier 1502 converts and amplifies the supplied digital signal into an analog signal, and emits the sound through a plurality of speakers 1504 connected to each of the amplifiers 1502. Reference numeral 1600 denotes other audio equipment, which includes, for example, a hard disk recorder. Other audio equipment 1600 inputs and outputs audio signals as IP packets to and from the engine 1300 via the IP network 1000. Reference numeral 1100 denotes a main console operated by a user, which instructs the engine 1300, microphone controller 1400, amplifier controller 1500, etc. to set various parameters. That is, when an operation to instruct parameter setting is performed on the main console 1100, the content is supplied to the engine 1300 as an IP packet of a control signal and reflected in the parameter in the engine 1300. A sub-console 1200 is connected to the main console 1100 as necessary. Although only one sub-console 1200 is shown in the example of FIG. 1, up to four sub-console 1200 can be connected to the main console 1100.

  Next, the detailed configuration of the main console 1100 will be described with reference to FIG. In the figure, reference numeral 1110 denotes a panel display group, which is composed of a dot matrix display, LEDs and the like provided on the operation panel. Reference numeral 1112 denotes a panel operator group, which includes buttons, knobs and the like provided on the operation panel. Reference numeral 1114 denotes a CPU which controls other components via the CPU bus 1120 based on a program stored in the memory 1116 (ROM and RAM). Note that the RAM of the memory 1116 is provided with a nonvolatile area that retains stored contents even when the power is turned off. Reference numeral 1122 denotes an electric fader group, which is provided for adjusting the signal level of each input / output channel or the like based on a user operation. Furthermore, the electric fader group 1122 is configured such that when an operation command is supplied via the CPU bus 1120, the operation position is automatically set.

  Reference numeral 1124 denotes an audio I / O unit. When an analog audio signal is input, the audio I / O unit converts the analog audio signal into a digital audio signal, outputs the digital audio signal, and outputs the digital audio signal supplied via the audio bus 1130. Is converted into an analog audio signal and output to the outside. Reference numeral 1126 denotes a DSP (digital signal processor), which performs equalizing processing on the audio signal supplied via the audio bus 1130. In the acoustic system of this embodiment, most of the audio signal processing is executed by the engine 1300, but small-scale audio signal processing and input / output such as talkback and monitoring are also executed by the main console 1100. . The audio I / O unit 1124 and the DSP 1126 are for performing such audio signal processing and input / output.

  Reference numeral 1128 denotes a network I / O unit, which converts a control signal supplied via the audio bus 1130 and a voice signal supplied via the CPU bus 1120 into an IP packet and outputs the IP packet to the IP network 1000. The IP packet received from is converted into a control signal or an audio signal and output via the CPU bus 1120 or the audio bus 1130. A console I / O unit 1118 inputs and outputs control signals and audio signals to and from the sub-console 1200. Reference numeral 1132 denotes an other I / O unit that inputs and outputs data to and from other devices such as a general-purpose personal computer.

  Next, the detailed configuration of the engine 1300 will be described with reference to FIG. In the figure, reference numeral 1310 denotes a panel display group, and 1312 denotes a panel operator group for simple setting and display for the engine 1300. Reference numeral 1314 denotes a CPU, 1316 denotes a memory (ROM and RAM), 1326 denotes a DSP, 1328 denotes a network I / O unit, 1330 denotes an audio bus, 1332 denotes other I / O units, and the component 1114 of the main console 1100, 1116, 1126, 1128, 1130, and 1132 are configured in substantially the same manner. However, since the DSP 1326 is responsible for most of the mixing and equalizing functions of the sound system, it is configured on a larger scale than the DSP 1126. The engine 1300 does not adjust the value of the parameter of the DSP 1326 by itself, and the value of each parameter in the DSP 1326 is adjusted based on the value of the signal processing parameter received from the main console 1100.

2． Next, the content of the algorithm implemented in the engine 1300 and the like will be described with reference to FIG. The algorithm is realized by a program set in the DSP 1326, and the program is loaded from the memory 1316 or the like to the DSP 1326 under the control of the CPU 1314. Various parameters in the algorithm (for example, the on / off state of the switch and the gain of the amplification unit) are control signals supplied from the main console 1100 to the network I / O unit 1328 via the IP network 1000. Is set by the CPU 1314.

  In FIG. 3, reference numeral 102 denotes an analog input unit. When an analog audio signal of a microphone level or a line level is received, it is converted into a digital audio signal and supplied to the engine 1300 via the IP network 1000. Reference numeral 104 denotes a digital input unit. When a digital audio signal is received, it is converted into a format for the engine 1300 and supplied to the engine 1300 via the IP network 1000. The analog input unit 102 and the digital input unit 104 are realized by the microphone controller 1400 and other audio equipment 1600 in FIG. An analog output unit 128 converts a digital audio signal supplied from the engine 1300 via the IP network 1000 into an analog audio signal and outputs the analog audio signal to the outside. A digital output unit 130 converts a digital audio signal in an internal format supplied from the engine 1300 via the IP network 1000 into a digital audio signal in a predetermined format (AES / EBU, ADAT, TASCAM, etc.) and outputs the digital audio signal. The analog output unit 128 and the digital output unit 130 are realized by an amplifier controller 1500 and other audio equipment 1600.

  The configuration described above is realized by hardware separate from the engine 1300, but the configuration other than the above is realized by a program (including a micro program for the DSP 1326) that operates in the engine 1300. Reference numeral 112 denotes an input channel adjustment unit that adjusts the volume, sound quality, and the like of the “128” input channels based on the operation of the electric faders and other controls of the consoles 1100 and 1200. Reference numeral 110 denotes a stereo input channel adjustment unit that adjusts the volume, sound quality, and the like for a maximum of four stereo input channels. It is assumed that “1” stereo audio signals are composed of left and right “2” audio signals.

  Reference numeral 114 denotes an effect return unit that adjusts the volume and sound quality of the audio signal of the “4” channel. The effect return unit 114 is assigned mainly to the audio signal subjected to the effect processing. Reference numeral 108 denotes an input patch unit which converts digital audio signals supplied from a plurality of input ports such as the input units 102 and 104 into arbitrary input channels of the stereo input channel adjustment unit 110, the input channel adjustment unit 112, and the effect return unit 114. Assign to. Reference numeral 106 denotes a built-in effector unit, which is composed of effectors of up to “8” units. The supplied audio signal is subjected to effect processing such as reverb, delay, modulation, etc., and the result is input via the input patch unit 108. It is supplied to the return unit 114 and the like.

  Reference numeral 116 denotes a MIX bus group composed of “96” MIX buses. When these MIX buses are individually indicated, they are expressed as “MIX bus 116-n” (1 ≦ n ≦ 96). In each MIX bus, digital audio signals supplied to the MIX bus among the digital audio signals of each input channel, each stereo input channel, and each effect return (hereinafter referred to as “input channel etc.”) are mixed. In each input channel or the like, whether or not an audio signal is supplied to the MIX bus can be set for each MIX bus. In the case of supply, a send level and a fade mode (pre-fade / post-fade) for each MIX bus can be set. ) Etc. can also be set independently for each system. Reference numeral 118 denotes a stereo bus, which is composed of “1” stereo buses. The configuration of the stereo bus is the same as that of the MIX bus.

  A stereo output channel unit 120 adjusts the level of the mixing result and the sound quality on the stereo bus. Reference numeral 122 denotes a MIX output channel section that adjusts the level of the mixing result and the sound quality of each MIX bus. A matrix bus group 123 includes a “48” channel matrix bus for further mixing the output signals of the stereo output channel section 120 and the MIX output channel section 122. A matrix output channel section 124 adjusts the level of the mixing result and the sound quality in the matrix bus group 123. An output patch unit 126 assigns output signals of the stereo output channel unit 120, the MIX output channel unit 122, and the matrix output channel unit 124 to the output units 128 and 130 or an arbitrary unit of the built-in effector unit 106.

  Next, details of the algorithm configuration in the input channel adjustment unit 112, the stereo output channel unit 120, and the MIX output channel unit 122 will be described with reference to FIG. In the figure, reference numeral 112-n denotes an nth input channel adjustment unit, which adjusts sound quality and volume in the nth input channel (1 ≦ n ≦ 128). Reference numeral 122-m denotes an m-th MIX output channel section, which performs sound quality / volume adjustment in the m-th MIX output channel (1 ≦ m ≦ 96). In the n-th input channel adjustment unit 112-n, reference numeral 150 denotes a sound quality adjustment unit that performs gate processing, compressor processing, equalizer processing, and the like on the n-th input channel. Here, “gate processing” is processing that automatically cuts unnecessary noise, “compressor processing” is processing that compresses or expands the dynamic range, and “equalizer processing” is a parametric equalizer. To set the frequency characteristics of the audio signal of each channel.

  A channel delay unit 152 delays the audio signal of the nth input channel as necessary. A volume adjustment unit 154 adjusts the gain of the audio signal of the nth input channel. An on / off switching unit 156 switches on / off the entire nth input channel. Reference numerals 162-1 to 162-96 denote signal switching units, which switch audio signals that can be output from the nth input channel to the "96" MIX buses according to the fade mode. That is, when the fade mode is set to “pre-fade”, the output signal of the channel delay unit 152 is selected, and when set to “post-fade”, the output signal of the on / off switching unit 156 is selected. Reference numerals 164-1 to 164-96 denote send level adjusting units that adjust the gain, that is, the send level of the signal output to each MIX bus.

  Reference numerals 166-1 to 166-96 denote send on / off switching units, which set the send on / off state for each MIX bus (whether or not to supply an audio signal to each MIX bus). Reference numeral 158 denotes a stereo send on / off switching unit that switches whether or not the audio signal of the nth input channel is supplied to the stereo bus 118. Reference numeral 160 denotes a PAN setting unit that sets a left / right volume balance when the audio signal is supplied to the stereo bus 118. Next, 170 in the stereo output channel section 120 is a sound quality adjustment section, which performs limiter processing, compressor processing, equalizer processing (frequency characteristic adjustment), etc. in the stereo output channel. Reference numerals 172-L and R denote volume control units that adjust the left and right output gains of the stereo output channel. Reference numerals 174-L and R denote on / off switching units for switching the left and right on / off states of the stereo output channel.

  Reference numerals 176-L and R denote channel delay units, which delay the audio signal of the stereo output channel as necessary. Next, in the m-th MIX output channel section 122-m, reference numeral 180 denotes a sound quality adjustment section, which performs a limiter process, a compressor process, an equalizer process, etc. in the m-th MIX output channel in the same manner as the sound quality adjustment section 150 described above. A volume adjusting unit 182 adjusts the output gain of the m-th MIX output channel. An on / off switching unit 184 switches the on / off state of the m-th MIX output channel. A channel delay unit 186 delays the audio signal of the m-th MIX output channel as necessary.

3． External Configuration of Main Console 1100 Next, a plan view of the main console 1100 is shown in FIG. The operation panel (upper plate) of the main console 1100 includes a front panel 1102 and a rear panel 1104. In the front panel 1102, reference numeral 72 denotes a sound quality adjustment unit, and for one selected channel (hereinafter referred to as “selected channel”), the sound quality adjustment units 150, 170, 180 and channel delay units 152, 176 -L, It consists of various controls and indicators for detailed parameter settings such as R and 186. Reference numerals 70-1 to 70-16 denote channel strips, each of which includes an operator for setting various parameters such as a fader level for the channel "16" belonging to the designated "layer".

  One channel strip includes an electric fader 2, a character display 4, a CUE button 6, an f button 8, a SEL button 10, an on / off button 12, and knobs 14 and 18. 74 is a small display, which is composed of a dot matrix display and a touch panel affixed to the upper surface thereof. The small display 74 is for displaying and operating scene recall, user-defined functions, and other various operation modes. 76-L and 76-R are channel strips dedicated to the stereo output channel section 120.

  Next, in the rear panel 1104 of the main console 1100, reference numeral 80 denotes a send level adjustment unit. When the selected channel is an input channel or the like, a send level or the like from the selected channel to each MIX bus is set. Inside the send level adjustment unit 80, a knob group 80a composed of “16” knobs and a layer selection unit 80b composed of a plurality of buttons for selecting a layer to be assigned to the knob group 80a are provided. . Each knob included in the knob group 80a is assigned to one of the send level adjusting units 164-1 to 164-96 (see FIG. 4) in the selected channel, and when the knob is rotated, the corresponding send level is adjusted. The gain of the adjustment unit 164-m (1 ≦ m ≦ 96) is increased or decreased.

  82 is a left main display, and 84 is a right main display, each of which is composed of a dot matrix display and a touch panel affixed to the upper surface thereof. The left and right main displays 82 and 84 are each divided into a plurality of areas, and the functions differ for each area. At the left end of the left main display 82, 82a is a selected channel area, which displays and sets various parameters in the selected channel together with the sound quality adjustment unit 72 and the send level adjustment unit 80. Reference numerals 82b and 84b denote navigation areas for switching the layer to be assigned to the channel strips 70-1 to 70-16. Reference numerals 82e and 84e denote channel display areas, which display channel numbers and channel names of channels assigned to the corresponding channel strips 70-1 to 70-16. Reference numerals 82c and 84c denote parameter areas, which display various parameter contents and setting buttons for the corresponding channel strips 70-1 to 70-16.

Four. Data structure
4.1. MIX bus management table 200
The memory 1116 of the main console 1100 stores a MIX bus management table 200 shown in FIG. 6, an input channel management table 300 shown in FIG. 7, and a send level initial value table 400 shown in FIG.
First, 202 is a channel number column in the management table 200 of FIG. 6, and numbers “Mix 1” to “Mix 96” are sequentially stored for the MIX buses 116-1 to 116-96. Reference numeral 204 denotes a category column, which stores either “monaural”, “stereo”, or “surround” categories. Here, “monaural” is a category in which an audio signal of one MIX bus is independent of an audio signal of another MIX bus, and the send level for the MIX bus should be adjusted independently. “Stereo” is a category in which audio signals of two MIX buses form a group (pair) and the send levels for both MIX buses should be adjusted in conjunction with each other.

  “Surround” is a category in which three or more MIX bus audio signals form a group, and the send levels for these MIX buses should be adjusted in conjunction with each other. More specifically, the category of “surround” is actually classified into “3.1 surround”, “LCR”, “5.1 surround”, “6.1 surround”, “4-channel stereo”, and the like. . In the category column 204, the signal type of the audio signal of the MIX bus in each category is also stored. For example, if the category is “stereo”, the signal type L (left) or R (right) is stored. When the category is “surround”, the signal type varies depending on the type of surround. For example, in “LCR”, the signal types of L (left front), C (center), and R (right front) are used. Is memorized. For example, in a 5.1 surround system, in addition to L (left front), C (center), and R (right front), Ls (left surround), Rs (right surround), and LFE (low frequency sound effect) Are stored.

  The LFE (low frequency sound effect) is a channel that outputs only the low frequency sound effect, and auxiliaryly outputs a heavy bass sound having a frequency component of 120 Hz or lower (with a frequency band of 120 Hz or higher cut). This is to add force to the sound. In the MIX bus corresponding to LFE, an audio signal having a frequency band of 120 Hz or higher is originally supplied from an input channel dedicated to LFE, and an audio signal having a frequency component of 120 Hz or higher is supplied from a normal input channel. It is assumed that it is supplied. For this reason, normally, in the m-th MIX output channel unit 122-m corresponding to LFE, the parameters of the sound quality adjustment unit 180 (see FIG. 4) are set so as to cut the frequency band of 120 Hz or higher. Note that human hearing is not capable of discriminating the direction of the low sound range, so LFE does not contribute to localization of sound images, and sound images are determined by channels other than LFE.

  A name column 206 stores the name of the MIX output channel. However, the same name is memorize | stored in the channel which comprises the same group. Reference numeral 208 denotes a group ID column, which stores a unique identification number for each group of MIX buses. In the example of FIG. 6, the same identification number “1” is assigned to the MIX buses 116-1 and 116-2 (Mix 1 and Mix 2), and a stereo group is formed by both. ing. Similarly, the same identification number “3” is assigned to the MIX buses 116-9 and 116-10 (Mix 9 and Mix 10), and a stereo group is configured by both.

  In addition, the same identification number “2” is assigned to the MIX buses 116-3 to 116-8 (Mix 3 to Mix 8), and a “5.1 surround” group is formed by these. Each of the other MIX buses constitutes a “monaural” group. Reference numeral 210 denotes an automatic allocation mode column that stores the ON / OFF state of the automatic allocation mode. The automatic assignment mode is set to “ON” when the initial value of the send level applied to the MIX bus is automatically set from each input channel, and is set to “OFF” when the initial value is not automatically set. Is set. The ON / OFF state of the automatic allocation mode is set to the same state within the same group. Although the channel number column 202 is fixed in the MIX bus management table 200, the contents of the category column 204, the name column 206, and the automatic allocation mode column 310 can be arbitrarily set by the user. The identification number in the group ID column 208 is automatically assigned based on the setting result of the category column 204 by the user.

4.2. Input channel management table 300
Next, 302 is a channel number column in the input channel management table 300 of FIG. 7, and numbers “Ch 1” to “Ch 128” are sequentially stored in the input channel adjustment units 112-1 to 112-128. Has been. Reference numeral 304 denotes a category column, which stores “mono”, “stereo”, or “surround” categories for each input channel, as in the category column 204 in the MIX bus management table 200 described above. In addition, the category of “surround” is classified into “3.1 surround”, “5.1 surround”, “6.1 surround”, “4-channel stereo”, and the MIX bus in each category. This is also the same as the category column 204 in that the signal type (for example, L (left) or R (right) in the case of stereo) is stored.

  A name column 306 stores the name of the input channel. Further, the same name is stored in the channels constituting the same group. A group ID field 308 stores a unique identification number for each group of input channels. In the example of FIG. 7, the same identification number “101” is assigned to both the first and second input channels (Ch 1 and Ch 2), and a stereo group is configured by both. . Further, the same identification number “106” is assigned to the seventh to twelfth input channels (Ch 7 to Ch 12), thereby forming a “5.1 surround” group. The fourteenth to sixteenth input channels (Ch 14 to Ch 16) are all assigned the same identification number “108”, thereby forming an “LCR” group. Each of the other input channels constitutes a “mono” group.

  Reference numeral 310 denotes an automatic allocation mode column, which stores an on / off state of the automatic allocation mode. The automatic assignment mode for this input channel is set to “ON” when the initial value of the send level applied to each MIX bus is automatically set from the input channel, and the initial value is not automatically set. Is set to “OFF”. The ON / OFF state of the automatic allocation mode is set to the same state within the same group. Similar to the MIX bus management table 200 described above, in the input channel management table 300, the channel number column 302 is fixed, and the contents of the category column 304, the name column 306, and the automatic allocation mode column 310 are arbitrary by the user. Can be set to The identification number in the group ID column 308 is automatically given based on the setting result of the category column 304 by the user. More specifically, there are “128 × 96” combinations of input channels and MIX buses, but the input channel automatic assignment mode is “ON” and the MIX bus automatic assignment mode is “ON”. Only for the combination, the initial value of the send level is automatically set.

4.3. Send level initial value table 400
Next, in the send level initial value table 400 of FIG. 12, the horizontal axis represents the category and signal type of the input channel, and the vertical axis represents the category and signal type of the MIX bus. The intersection of the horizontal axis and the vertical axis represents the initial value of the send level from the input channel to the MIX bus in a linear scale. That is, when converted to decibel notation, “1” in the figure becomes “0 [dB]”, and “0” in the figure becomes “−∞ [dB]”. Variables represented by “X” and a two-digit number such as “X01”, “X02”, “X03”, etc. can be arbitrarily set by the user in the range of “0 to 1” on the linear scale. However, these variables are set to values larger than “0” in a normal use state. In addition, FIG. 12 illustrates only “4” types of “mono”, “stereo”, “LCR”, and “5.1 surround” as input channel and MIX bus categories, and omits other categories. doing.

Five. Operation of the embodiment
5.1. Management parameter setting process
5.1.1. When the MIX bus user performs a predetermined operation on the small display 74, the MIX bus setting window 250 shown in FIG. 8 is displayed on the left and right main displays 82 and 84 in order to set the contents of the MIX bus management table 200 (FIG. 6). Is displayed. In FIG. 8, reference numeral 252 denotes a channel number column, which displays the contents of the channel number column 202 in the MIX bus management table 200 (FIG. 6). Reference numeral 254 denotes a category selection field, which includes a list box provided for each channel in order to set the contents of the category field 204 in the management table 200.

  Reference numeral 256 denotes a name setting column, which includes text boxes provided for each channel in order to set the contents of the name column 206 in the management table 200. A check box 258 toggles the automatic assignment mode ON / OFF state each time it is pressed by the user. Note that the MIX bus with a check indicates that the automatic allocation mode is “ON”, and the empty MIX bus has the automatic allocation mode “OFF”. When an OK button 260 is pressed by the user, the contents of the MIX bus management table 200 are updated to reflect the setting contents in the MIX bus setting window 250, and then the MIX bus setting window 250 is closed. Reference numeral 262 denotes a cancel button. When pressed by the user, the MIX bus setting window 250 is closed without updating the management table 200. Reference numeral 264 denotes a scroll button that scrolls the MIX bus displayed in the MIX bus setting window 250 (increases or decreases by "16" channel).

  In the list box of the category selection field 254, categories such as monaural, stereo, and surround can be selected. In stereo and surround, when a category of a MIX bus of a certain channel is set, the category is automatically set for a channel having a number subsequent thereto. For example, when the category of a certain MIX bus 116-n is set to “stereo”, the signal type of the MIX bus 116-n is set to stereo L (left), and the MIX bus 116 whose number is increased by “1”. -(N + 1) signal type is set to stereo R (right) of the same group. Also, when the “LCR” category is set for the MIX bus 116-n, a “3” channel MIX bus starting from the MIX bus is secured, and these form an LCR group. These signal types are set to L (front left), C (center), and R (right front) in the order of the channel numbers of the MIX bus. Similarly, when the “5.1 surround” category is set for the MIX bus 116-n, a “6” channel MIX bus starting from the MIX bus is secured, thereby forming a surround group. Is done. These signal types are set to L (front left), C (center), R (right front), Ls (left surround), Rs (right surround), and LFE (low frequency sound effect) in the order of the channel numbers of the MIX bus. The

  In the illustrated example, the category of the MIX bus 116-1 (Mix 1) is set to “stereo”, so that the category of the MIX bus 116-1, 116-2 (Mix 1, Mix 2) is “ It is set to “Stereo”. Further, the signal type of the MIX bus 116-1 (Mix 1) is set to L (left), and the signal type of the MIX bus 116-2 (Mix 2) is set to R (right). In addition, as a result of the category of the MIX bus 116-3 (Mix 3) being set to “5.1 surround”, the “5.1 surround” of the MIX bus 116-3 to 116-8 (Mix 3 to Mix 8) is set. A group is formed, and the signal types related to these MIX buses are L (front left), C (center), R (front right), Ls (left surround), Rs (right surround), and LFE (low frequency effect sound). It is set sequentially.

5.1.2. Input Channel When the user performs another predetermined operation on the small display 74, the input channel window 350 shown in FIG. 9 is displayed on the left and right main displays 82 in order to set the contents of the input channel management table 300 (FIG. 7). , 84. In FIG. 9, reference numeral 352 denotes a channel number column, which displays the contents of the channel number column 302 in the input channel management table 300 (FIG. 7). Reference numeral 354 denotes a category selection column, which includes a list box provided for each channel in order to set the contents of the category column 304 in the management table 300. As in the case of the MIX bus setting window 250 described above, when the category of the input channel in the category selection field 354 is set to “stereo” or “surround”, the same number is also applied to the required number of channels following this. The category is automatically set.

  Reference numeral 356 denotes a name setting field, which is composed of text boxes provided for each channel in order to set the contents of the name field 306 in the management table 300. A check box 358 toggles the ON / OFF state of the automatic allocation mode each time it is pressed by the user. As in the case of the MIX bus setting window 250, the MIX bus that is checked has the automatic assignment mode “ON”, and the empty MIX bus has the automatic assignment mode “OFF”. Reference numeral 360 denotes an OK button. When pressed by the user, the contents of the input channel management table 300 are updated to reflect the setting contents in the input channel window 350, and then the input channel window 350 is closed. Reference numeral 362 denotes a cancel button. When pressed by the user, the input channel window 350 is closed without updating the management table 300. Reference numeral 364 denotes a scroll button that scrolls the input channel displayed in the input channel window 350 (increase or decrease by "16" channel).

5.2. Initialization Processing Even when the MIX bus management table 200 or the input channel management table 300 described above is updated, the parameters in the mixing algorithm are not updated as they are, and a predetermined initialization operation (for example, a predetermined operation on the small display 74) is performed. When detected, the initialization processing routine shown in FIG. 10 is started in the CPU 1114 of the main console 1100, and these parameters are updated. Therefore, the operation of the routine will be described. When the process proceeds to step SP10 in FIG. 10, the automatic allocation mode columns 210 and 310 in the management tables 200 and 300 are searched, and the range in which the send level is automatically allocated is extracted. That is, the range of combinations in which the automatic allocation mode of the input channel is “ON” and the automatic allocation mode of the MIX bus is “ON” is the automatic allocation range. The send on / off switching unit 166 in this automatic allocation range (in the nth input channel adjustment unit (1 ≦ n ≦ 128) in which the automatic allocation mode is “ON”, the send on / off switching unit 166 in which the automatic allocation mode is “ON”). -M (1 ≦ m ≦ 96)) are all set to the off state. As a result, the supply of signals from these input channels to the MIX bus is stopped.

  Next, when the process proceeds to step SP20, the automatic allocation mode is “ON” in the send level in the automatic allocation range (the nth input channel adjustment unit (1 ≦ n ≦ 128) in which the automatic allocation mode is “ON”). The send level adjuster 164-m (1 ≦ m ≦ 96) gain is automatically based on the category and signal type of each input channel and MIX bus, and the send level initial value table 400 (FIG. 12). To be determined. Here, an outline of the automatic allocation process will be described with reference to FIG. 11 shows an outline of the send level setting state when the state of the management tables 200 and 300 is as shown in FIGS. In FIG. 11, each horizontal axis corresponds to an input channel, and each vertical axis corresponds to a MIX bus. Of the intersections between the horizontal axis and the vertical axis, an intersection with a circle is given a send level greater than “−∞” dB, and an intersection without a circle is given a send level of “−∞” dB. .

5.3. Details of Send Level Setting Next, details of the send level set from each input channel to each MIX bus in step SP20 will be described with reference to FIG. 12 again. Here, the send level notation method in the following description will be described. First, the send level from the n-th input channel to the MIX bus 116-m (the gain of the send level adjustment unit 164-m) is expressed as “send level SL (n, m)” using the channel number. be able to. Further, instead of the channel number, the signal type, “_in” representing the input channel, and “_out” representing the MIX bus may be used for description. That is, if both the signal type of the nth input channel and the MIX bus 116-m are L (left), it can be expressed as “send level SL (L_in, L_out)”.

In addition, a character string such as L_in and L_out representing a signal type also represents a “signal level” of the linear scale, and by expressing L_out as a linear function of L_in, the send level of the linear scale can be represented. For example,
L_out = X00 ・ L_in
It is a mathematical formula like this. In this equation, “L_out” on the left side is a signal level appearing on the corresponding MIX bus. Further, “L_in” on the right side is a signal level output to the MIX bus when the send level to the certain MIX bus is “0” dB. The coefficient “X00” for “L_in” is a value representing the send level SL (L_in, L_out) with a linear scale.

(1) Input: Stereo → Output: Stereo The nth and (n + 1) th input channels form a “stereo” group, and the MIX buses 116-m and 116- (m + 1) form a “stereo” group. Assume that both automatic assignment modes are “ON”. In such a case, according to FIG. 12, the send levels expressed in a linear scale are as follows.
SL (L_in, L_out) = 1
SL (L_in, R_out) = 0,
SL (R_in, L_out) = 0,
SL (R_in, R_out) = 1 (1)
The signal type of the nth input channel and MIX bus 116-m is L (left), and the signal type of the (n + 1) th input channel and MIX bus 116- (m + 1) is R (right). When a channel number is used instead of the type and the send level is represented by a log scale, each send level can be expressed as follows.

SL (n, m) = 0 [dB],
SL (n, m + 1) = − ∞ [dB],
SL (n + 1, m) = − ∞ [dB],
SL (n + 1, m + 1) = 0 [dB] ... Formula (2)
Here, L_in, L_out, R_in, and R_out representing signal types also represent “signal levels” of a linear scale, and when the signal levels R_in and R_out are expressed by mathematical expressions using the above send levels as coefficients, It becomes like this.
L_out = 1 ・ L_in + 0 ・ R_in = L_in
R_out = 0 · L_in + 1 · R_in = R_in (3)
Expressions (1) to (3) are equivalent, and hereinafter, various send levels are expressed mainly in the form of Expression (3). For example, in FIG. 11, the send level corresponds to the intersection of the first and second input channels (Ch 1 and Ch 2) and the MIX buses 116-1 and 116-2 (Mix 1 and Mix 2).

(2) Input: LCR → Output: Stereo The nth to (n + 2) th input channels form an “LCR” group, and the MIX buses 116-m and 116- (m + 1) form a “stereo” group. Assume that both automatic assignment modes are “ON”. In such a case, according to FIG. 12, in the above-mentioned step SP20, each send level is set based on the following equation.
SL (L_in, L_out) = X01,
SL (L_in, R_out) = 0,
SL (R_in, L_out) = 0,
SL (R_in, R_out) = X02,
SL (C_in, L_out) = X03,
SL (C_in, R_out) = X03 (4)
Further, the expression (4) can be expressed as follows according to the expression method of the above expression (3).
L_out = X01 ・ L_in + X03 ・ C_in
R_out = X02 / R_in + X03 / C_in (5)
For example, in FIG. 11, the send level corresponds to the intersection of the 14th to 16th input channels (Ch 14 to Ch 16) and the MIX buses 116-1 and 116-2 (Mix 1 and Mix 2).

(3) Input: 5.1 surround → Output: Stereo The nth to (n + 5) th input channels form a “5.1 surround” group, and the MIX buses 116-m and 116- (m + 1) are “stereo” groups. And these automatic allocation modes are both “ON”. In such a case, according to FIG. 12, in the above-mentioned step SP20, each send level is set based on the following equation.
L_out = X11 · L_in + X13 · Ls_in + X15 · C_in + X16 · LFE_in,
R_out = X12 · R_in + X14 · Rs_in + X15 · C_in + X16 · LFE_in (6)
For example, in FIG. 11, the send level corresponds to the intersection of the seventh to twelfth input channels (Ch 7 to Ch 12) and the MIX buses 116-1 and 116-2 (Mix 1 and Mix 2).

(4) Input: Stereo → Output: LCR
The nth and (n + 1) th input channels form a “stereo” group, the MIX buses 116-m to 116- (m + 2) form an “LCR” group, and these automatic allocation modes are both “ON”. Suppose. In such a case, according to FIG. 12, in the above-mentioned step SP20, each send level is set based on the following equation.
L_out = L_in,
C_out = X21 · L_in + X22 · R_in,
R_out = R_in (7)

(5) Input: LCR → Output: LCR
The nth to (n + 2) th input channels form an “LCR” group, the MIX buses 116-m to 116- (m + 2) form an “LCR” group, and these automatic allocation modes are both “ON”. Suppose. In such a case, according to FIG. 12, in the above-mentioned step SP20, each send level is set based on the following equation.
L_out = L_in,
C_out = C_in,
R_out = R_in (8)

(6) Input: 5.1 surround → Output: LCR
The nth to (n + 5) input channels form a “5.1 surround” group, the MIX buses 116-m to 116- (m + 2) form an “LCR” group, and both of these automatic allocation modes are “ON”. ”. In such a case, in step SP20, each send level is set based on the following equation.
L_out = X31 · L_in + X33 · Ls_in + X36 · LFE_in,
C_out = C_in + X36 · LFE_in,
R_out = X32 · R_in + X34 · Rs_in + X36 · LFE_in (9)

(7) Input: Stereo → Output: 5.1 Surround The nth and (n + 1) th input channels form a “stereo” group, and the MIX buses 116-m to 116- (m + 5) are “5.1 surround” groups. And these automatic allocation modes are both “ON”. In such a case, according to FIG. 12, in the above-mentioned step SP20, each send level is set based on the following equation.
L_out = L_in,
C_out = X41 · L_in + X41 · R_in,
R_out = R_in,
Ls_out = L_in,
Rs_out = R_in,
LFE_out = X42 · L_in + X42 · R_in (10)

(8) Input: LCR → Output: 5.1 surround The nth to (n + 2) th input channels form an “LCR” group, and the MIX buses 116-m to 116- (m + 5) are “5.1 surround” groups. And these automatic allocation modes are both “ON”. In such a case, according to FIG. 12, in the above-mentioned step SP20, each send level is set based on the following equation.
L_out = L_in,
C_out = C_in,
R_out = R_in
Ls_out = C_in + X51 · L_in,
Rs_out = C_in + X52 · R_in,
LFE_out = C_in + X53 · L_in + X54 · R_in (11)

(9) Input: 5.1 surround → Output: 5.1 surround The nth to (n + 5) th input channels form a “5.1 surround” group, and the MIX buses 116-m to 116- (m + 5) are “ It is assumed that a “5.1 surround” group is formed and both of these automatic allocation modes are “ON”. In such a case, according to FIG. 12, in the above-mentioned step SP20, each send level is set based on the following equation.
L_out = L_in,
C_out = C_in,
R_out = R_in
Ls_out = Ls_in,
Rs_out = Rs_in,
LFE_out = LFE_in (12)

(10) When the input or output is monaural When the automatic allocation mode of the nth input channel and the MIX bus 116-m is both “ON” and the category of the nth input channel is “monaural”, FIG. Therefore, regardless of the category of the MIX bus 116-m, in step SP20, the send level from the nth input channel to the MIX bus 116-m is set to “1” on the linear scale. When both the nth input channel and the automatic allocation mode of the MIX bus 116-m are “ON” and the category of the MIX bus 116-m is “monaural”, according to FIG. 12, the nth input channel Regardless of the category, in step SP20, the send level from the nth input channel to the MIX bus 116-m is set to “1” on a linear scale.

  As described above, according to the present embodiment, the combination of each input channel and each MIX bus can be automatically set to the initial value of the send level based on the send level initial value table 400. Can be realized.

6． Modifications The present invention is not limited to the above-described embodiments, and various modifications can be made as follows, for example.
(1) In the above embodiment, devices such as the consoles 1100 and 1200, the engine 1300, the microphone controller 1400, the amplifier controller 1500, and other audio equipment 1600 are accommodated in separate casings, and these devices are accommodated in the IP network 1000. However, all or part of these devices may be housed in the same housing.

(2) In the above embodiment, the initial value of the send level stored in the send level initial value table 400 is arbitrarily set by the user as fixed to “1” or “0” on the linear scale. However, the user may arbitrarily set all initial values stored in the table. Thereby, for example, an initial value “1” on the linear scale can be set to an arbitrary initial value larger than “0”.

(3) In the send level initial value table 400 shown in FIG. 12, the send level initial values are set for all the combinations shown in the figure. Good. In the “combination without setting initial values”, the initial value is not set in step SP20 even if the automatic allocation mode of the input channel and the MIX bus is both “ON”. For example, when the send level from a monaural input channel to a MIX bus belonging to a category other than monaural is set to “a combination in which no initial value is set”, the contents of the send level initial value table 400 are changed as shown in FIG. Good.

(4) In the above embodiment, the initial value of the send level is set by a program operating on the CPU 1114 of the main console 1100, but only this program is stored in a recording medium such as a CD-ROM or a memory card. It can also be distributed through a transmission line.

2: Electric fader, 4: Character display, 5.1 Surround:
6 CUE button, 8: f button, 10: SEL button, 12: on / off button, 14, 18: knob, 70-1: channel strip, 70-1 to 70-16: channel strip, 72: sound quality adjustment Section, 74: small display, 76-L, 76-R: channel strip, 80: send level adjustment section, 80a: knob group, 80b: layer selection section, 82: left main display, 82a: selected channel area, 82, 84: Left and right main display, 82b, 84b: Navigation area, 82c, 84c: Parameter area, 82e, 84e: Channel display area, 82a: (Image display means), 84: Right main display, 102: Analog input section, 104: Digital input unit 106: Built-in effector unit 108: Input patch unit 1 10: stereo input channel adjustment unit, 112: input channel adjustment unit, 112-1 to 112-128: input channel adjustment unit, 112-n: nth input channel adjustment unit, 114: effect return unit, 116: MIX bus group 116-1 to 116-96: MIX bus (mixing bus), 118: stereo bus, 120: stereo output channel section, 122: MIX output channel section, 122-m: m-th MIX output channel section, 123: matrix bus group 124: Matrix output channel section, 126: Output patch section, 128: Analog output section, 130: Digital output section, 150, 170, 180: Sound quality adjusting section, 152: Channel delay section, 154: Volume adjusting section, 156: On / off switching unit, 158: stereo send on / off switching unit, 60: PAN setting unit, 162-1 to 162-96: signal switching unit, 164-1 to 164-96: send level adjusting unit, 166-1 to 166-96: send on / off switching unit, 172-L, R: Volume adjustment unit, 174-L, R: On / off switching unit, 176-L, R: Channel delay unit, 182: Volume adjustment unit, 184: On / off switching unit, 186: Channel delay unit, 200: MIX bus management table (MIX Bus management table storage means), 202: channel number column, 204: category column, 206: name column, 208: group ID column, 210, 310: automatic allocation mode column, 250: MIX bus setting window, 252: channel number column 254: Category selection field, 256: Name setting field, 258: Check box, 260: OK button, 262: Card Cell button, 264: scroll button, 300: input channel management table (input channel management table storage means), 302: channel number column, 304: category column, 306: name column, 308: group ID column, 350: input channel window 352: Channel number field, 354: Category selection field, 356: Name setting field, 360: OK button, 364: Scroll button, 400: Send level initial value table, 1000: IP network, 1100: Main console (mixing console) 1102: Front panel, 1104: Rear panel, 1110: Panel display group, 1112: Panel operator group, 1114: CPU (processing device), 1116: Memory, 1118: Console I / O unit, 1120: CPU bus 1122: Electric Fe 1124: Audio I / O unit, 1126: DSP, 1128: Network I / O unit, 1130: Audio bus, 1132: Other I / O unit, 1200: Sub console, 1300: Engine, 1310: Panel Display group, 1312: Panel operator group, 1314: CPU, 1316: Memory, 1326: DSP, 1328: Network I / O unit, 1330: Audio bus, 1332: Other I / O unit, 1400: Microphone controller, 1402: Microphone, 1500: Amplifier controller, 1502: Amplifier, 1504: Speaker, 1600: Other audio equipment.

Claims (7)

By appropriately supplying audio signals of a plurality of input channels to a plurality of mixing buses, the audio signals of the input channels are supplied to the mixing buses to a mixing engine that mixes the audio signals in the mixing bus. In a mixing console that indicates a send on / off state that indicates whether or not and a send level that is a gain in supplying the audio signal,
Input channel management table storage means for storing an input channel management table in which the plurality of input channels are classified into a plurality of groups and the classification state can be rewritten, wherein each group is a monaural composed of one input channel. Input channel management table storage means belonging to one of the following categories: stereo consisting of two input channels and surround consisting of three or more input channels;
Mixing bus management table storage means for classifying the plurality of mixing buses into a plurality of groups and storing a mixing bus management table in which the classification state can be rewritten, wherein each group comprises a single mixing bus. A mixing bus management table storage means belonging to one of the following categories: monaural, stereo composed of two mixing buses, and surround composed of three or more mixing buses;
Extracting means for extracting a combination satisfying a predetermined condition from among the combinations of the input channels and the mixing buses;
An initial value setting means for setting a send level to the mixing bus in the input channel to a predetermined initial value for the extracted combination. The two input channels constituting the stereo category consist of input channels of the left and right signal types, and the two mixing buses constituting the stereo category consist of mixing buses of the left and right signal types. Is,
The initial value setting means includes a send level from the left input channel to the left mixing bus and a right input channel to the right mixing bus for a combination in which the input channel and the mixing bus category are both stereo. And the send level from the left input channel to the right mixing bus and the send level from the right input channel to the left mixing bus. The mixing console according to claim 1, wherein the value is set to “0” on a linear scale. The three or more input channels forming the surround category have at least left, right, and center signal type input channels, and the three or more mixing buses forming the surround category include left, right, and center input channels. It has at least a signal type mixing bus,
The initial value setting means includes a send level from the left input channel to the left mixing bus, and a right input channel to the right mixing bus for a combination in which the input channel and the mixing bus category are both surround. The send level to the center and the send level from the center input channel to the center mixing bus are set to an initial value greater than “0” on a linear scale, and the left input channel to the right and center mixing buses The send level and the send level from the right input channel to the left and center mixing bus, and the send level from the center input channel to the left and right mixing bus must be set to “0” on a linear scale. The mixing console according to claim 2. The initial value setting means includes a send level from the left input channel to the left and center mixing buses, and a right input for a combination in which the input channel category is stereo and the mixing bus category is surround. The send level from the channel to the right and center mixing bus is set to an initial value greater than “0” on the linear scale, and the send level from the left input channel to the right mixing bus and the left from the right input channel are set to the left. The mixing console according to claim 3, wherein the send level to the mixing bus is set to "0" on a linear scale. The initial value setting means includes a send level from the left input channel to the left mixing bus, and a right input channel for a combination in which the input channel category is surround and the mixing bus category is stereo. Set the send level to the right mixing bus and the send level from the center input channel to the right and left mixing buses to an initial value greater than “0” on a linear scale, and from the left input channel to the right The mixing console according to claim 4, wherein the send level to the mixing bus and the send level from the right input channel to the left mixing bus are set to “0” on a linear scale. The input channel management table storage means stores an on / off state of an automatic allocation mode for each input channel,
The mixing bus management table storage means stores an on / off state of an automatic allocation mode for each mixing bus,
When the initial value setting means detects a predetermined operation by the user, the initial value setting means sets an initial value of the send level for a combination in which both the input channel and the mixing bus automatic allocation mode are on, and The mixing console according to any one of claims 1 to 5, wherein a send on / off state related to the combination is set to an off state. By appropriately supplying audio signals of a plurality of input channels to a plurality of mixing buses, the audio signals of the input channels are supplied to the mixing buses to a mixing engine that mixes the audio signals in the mixing bus. A program applied to a mixing console that indicates a send on / off state indicating whether or not and a send level that is a gain in supplying the audio signal,
The mixing console is
A processing device;
Input channel management table storage means for storing an input channel management table in which the plurality of input channels are classified into a plurality of groups and the classification state can be rewritten, wherein each group is a monaural composed of one input channel. Input channel management table storage means belonging to one of the following categories: stereo consisting of two input channels and surround consisting of three or more input channels;
Mixing bus management table storage means for classifying the plurality of mixing buses into a plurality of groups and storing a mixing bus management table in which the classification state can be rewritten, wherein each group comprises a single mixing bus. A mixing bus management table storage means belonging to one of the following categories: monaural, stereo composed of two mixing buses, and surround composed of three or more mixing buses,
An extraction process for extracting a combination satisfying a predetermined condition from the combinations of the input channels and the mixing buses;
A program that causes the processing device to execute an initial value setting step of setting a send level to the mixing bus in the input channel to a predetermined initial value for the extracted combination.

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