JP3988692B2 - Acoustic signal processing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an acoustic signal processing apparatus that performs signal processing on an acoustic signal and outputs the signal.
[0002]
[Prior art]
In an acoustic signal processing device such as a digital mixer that performs signal processing on an acoustic signal and outputs it, the acoustic signal processing is controlled in accordance with current data indicating the current state of the device, and this current data is changed in accordance with the operation of the operator. In general, the contents of the acoustic signal processing can be edited. Then, when the user designates a scene number and instructs “Store”, the current data is saved in the scene memory as the designated number of scenes (setting data), or vice versa. By instructing “recall (calling)”, the scene of that number can be read out to become current data. By providing such a function, it is possible to call a wide variety of settings with simple operations and reflect them in signal processing.
[0003]
Also, in a sound signal processing apparatus having such a store / recall function, when a scene is recalled, a part of the data included in the scene is excluded from the recall target and the current before the recall is performed. There is also known an apparatus that allows data to be left as it is.
For example, Non-Patent Document 1 describes a digital mixer in which scene data is divided into a plurality of groups, and protection settings for setting whether to execute recall can be performed for each group. In this digital mixer, protection setting can be performed for each input channel (ch) or output channel, for each parameter group in the selected channel, or for each effector.
[0004]
[Non-Patent Document 1]
“DM2000 Instruction Manual”, Yamaha Corporation, 2002, p. 157-163
[0005]
Here, the processing executed when a scene is recalled in such a digital mixer is shown in the flowchart of FIG. 9, for example.
That is, first, in step S101, the data of the selected scene is read from the setting data memory to the work memory. In step S102, this is set so that the contents of the current memory being rewritten are not reflected in control such as signal processing until rewriting at the time of recall is completed.
[0006]
Thereafter, the processing of steps S103 to S107 refers to the protection setting for each group, and the current data stored in the current memory is read from the work memory and only the parameters of the group for which recall execution disabled (protection) is not set. The corresponding data is overwritten to make the current data.
Then, after overwriting is completed for all necessary parameters, in step S108, the contents of the current memory are set to be reflected in the control again, and the process is terminated.
[0007]
By performing such processing, even when a scene is recalled, it is possible to leave the original current data unchanged for parameters for which protection is set. Therefore, according to such a digital mixer, it is possible to recall only a part of the scene, or to recall the scene while retaining the parameters to be controlled manually according to the situation at that time. The operability of the function can be improved.
[0008]
[Problems to be solved by the invention]
However, in the conventional digital mixer, when transferring parameter data from the work memory to the current memory, the protection setting is sequentially checked for each group, and if the protection is not set, the data of the group is transferred. ing. Therefore, the amount of data sent in one transfer is inevitably small. In addition, since this process is a process of filtering scene data, it is necessary to determine whether or not there is transfer for all groups.
[0009]
On the other hand, the protection setting is often set such that only a part of data cannot be recalled and most data can be recalled. In such a case, in the above-described method, although almost all parameter data is transferred to the current memory as a result, the transfer is repeated in a small number of times. In other words, it is necessary to transfer as many times as the number of groups that can be recalled. For this reason, there has been a problem that the processing load increases and the recall processing takes time.
An object of the present invention is to solve such problems and to speed up scene data calling processing in an acoustic signal processing apparatus that performs signal processing on an acoustic signal and outputs the processed signal.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, in an acoustic signal processing apparatus that performs signal processing on an acoustic signal and outputs the same, a plurality of scene data each including a plurality of groups of data indicating a setting state of the apparatus is obtained. and scene data memory for storing a current memory for storing current data indicating the current state of the device, and a control means for controlling the signal processing based on the current data, the scene that is stored in the scene data memory Recalling means for recalling data to the current memory as the current data; protection setting accepting means for accepting a protection setting for determining a group that maintains the state of the current data when the scene data is recalled by the recalling means among the plurality of groups; the provided, on the recall means, the recall should do sheet Means for invoking the work memory emissions data from the scene data memory, the data of the group that is defined that maintain the state of the current data by the protection settings of the current data, is read from the current memory, the and protection means for overwriting the corresponding data among the scene data calls to the work memory, the scene data that all necessary data are stored in the work memory is overwritten by the data of the current memory, the current data Current data changing means to be used as the above.
[0011]
In such an acoustic signal processing device, the current data changing means is means for using the scene data stored in the work memory as the current data by copying the contents of the work memory to the current memory. It is good to do.
Alternatively, the current data changing means may be means for using the scene data stored in the work memory as the current data by changing at least a part of the work memory to the current memory.
Further, in these audio signal processing apparatuses, the protection setting receiving means receives the protection setting, performs a first mode for receiving selection of a group that maintains the state of the current data, and recalls the scene data. Means for performing a selection in a second mode for accepting selection of a group is provided, and when the protection setting acceptance means accepts the protection setting in the second mode for the calling means, the protection means and the current data The changing means is not operated, and the recalled group data among the scene data to be recalled is read from the scene data memory and overwritten on the corresponding data among the current data stored in the current memory. Means may be provided.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described below with reference to the drawings.
First, the configuration of a digital mixer which is an embodiment of the acoustic signal processing apparatus of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of the digital mixer.
As shown in FIG. 1, this digital mixer (hereinafter also simply referred to as “mixer”) includes a CPU 11, a flash memory 12, a RAM 13, an external device interface (I / F) 14, a display 15, an acoustic signal input / output unit 16, A signal processing unit (DSP) 17, a switch 18, an electric fader 21, and a rotary encoder 24 are provided, and these are connected by a system bus 19. And it has the function to perform various signal processing with respect to the input acoustic signal, and to output.
[0013]
The CPU 11 is a control unit that performs overall control of the operation of the entire mixer, and detects operations of the switch 18, the electric fader 21, and the rotary encoder 24 by executing a predetermined program stored in the flash memory 12. The parameter value is changed according to the operation, the setting data is stored and recalled, and the operation of the DSP 17 is controlled according to the set parameter.
The flash memory 12 is a rewritable nonvolatile storage unit that stores a control program executed by the CPU 11.
[0014]
The RAM 13 functions as a current memory to store current data that is setting data indicating the current state of the mixer, functions as a scene data memory to store a library of setting data to be described later, or a work memory of the CPU 11 It is a storage means to be used as. Of course, the RAM 13 can perform these functions simultaneously.
The external device I / F 14 is an interface for exchanging information with an external device such as a personal computer connected to the mixer.
The display 15 is a display means provided on the operation panel of the mixer and configured by a liquid crystal display (LCD) or the like. The screen includes a display 50 for displaying a setting reference, change, storage, and the like, an operation state of the mixer, a scene number display 42 for displaying the number of a scene to be saved / recalled, and the like. .
[0015]
The acoustic signal input / output unit 16 is an interface for receiving an input of an acoustic signal to be processed by the DSP 17 and outputting the processed acoustic signal. The acoustic signal input / output unit 16 has an A / D conversion board capable of four-channel analog input by one board, a D / A conversion board capable of four-channel analog output by one board, and eight by eight. A plurality of digital input / output boards capable of digital input / output of channels can be mounted in appropriate combinations, and signals are actually input / output through these boards.
The DSP 17 is a module that performs signal processing according to the values of various parameters set as current data for the acoustic signal input from the acoustic signal input / output unit. Details of the processing will be described later.
[0016]
The switch 18, the electric fader 21, and the rotary encoder 24 are provided on the operation panel of the mixer, and are operators for the user to set parameters relating to the processing of the acoustic signal. Of these, the electric fader 21 is a slider operator having a motor, and the knob can be moved to a designated position by an instruction from the CPU 11. The rotary encoder 24 has a function of detecting the rotation amount of the knob as an operation amount. The switch 18 refers to various operators other than the electric fader 21 and the rotary encoder 24 provided on the operation panel.
[0017]
Here, FIG. 2 shows the configuration of the DSP 17 in more detail. As shown in FIG. 2, the mixing process executed by the DSP 17 includes a built-in effector 123, an input patch 125, an input channel 140, various buses 127, an output channel 150, and an output patch 130. An analog input 121, a digital input 122, an analog output 131, and a digital output 132 indicate an input / output unit using the board described above that is mounted on the acoustic signal input / output unit 16.
The built-in effector 123 is a multi-block effector that gives a selected effect to an input signal and outputs it. The channel configuration can be switched between monaural and stereo.
The input patch 125 performs arbitrary connection for allocating each input of the analog input 121 and the digital input 122 and the signal input from the built-in effector 123 to the input channels 140 having 48 channels. The input signal allocated by the input patch 125 is input to each channel of the input channel 140.
[0018]
FIG. 3 shows the configuration of one channel constituting the input channel 140. As shown in FIG. 3, each channel of the input channels 140 includes an equalizer 141, a noise gate 142, a compressor 143, a fader & on 144, a pan & routing 145, and an AUX on & send level 146. Here, the equalizer 141 is a parametric equalizer having three bands of LOW, MID, and HIGH, and the noise gate 142 is a gate and compressor for closing so that no noise remains when the signal level is lowered (blocking the signal line). Reference numeral 143 denotes a module for performing automatic gain adjustment, and fader & on 144 is a module having a volume for adjusting level (volume) and a function for setting output on / off.
[0019]
In the input channel 140, predetermined processing is performed on the signals input by these modules, and the processed signals are output to various buses 127. Of these, the signals are output to the MIX bus via the pan & routing 145. This module consists of pan for setting the left / right balance when outputting to the stereo bus, and routing for setting whether to output to each bus. Further, the data is output to the AUX bus via the AUX on & send level 146. This module consists of AUX ON for setting the presence / absence of output to each bus and a send level for setting the level of output to each bus.
Here, it is possible to output from one input channel to a plurality of buses, or to output from a plurality of input channels to one bus. Signals input to the various buses 127 are output to the corresponding output channels 150. At this time, in the buses to which signals are input from the plurality of input channels 140, mixing processing is performed on these signals.
[0020]
The output channels 150 are provided in 16 channels so as to correspond to the various buses 127 on a one-to-one basis. Each channel has modules corresponding to the equalizer 141, the noise gate 142, the compressor 143, and the fader & on 144 in the configuration of the input channels shown in FIG. The output channel 150 performs predetermined processing on the signals input by these modules, and outputs the processed signals to the output patch 130.
The output patch 130 performs arbitrary connection for allocating a signal input from the output channel 150 to each output of the analog output 131 and the digital output 132 and the built-in effector 123. It is also possible to assign a signal from one output channel to a plurality of output units. The signal assigned to the analog output 131 or the digital output 132 is output from here, and the signal assigned to the built-in effector 123 is input to the input patch 125 again after the processing here.
[0021]
The DSP 17 can also mix the signals selected from the input channel 140 and the output channel 150 and output the mixed signals to a monitor output (not shown).
Each element of the DSP 17 described above may be realized by a circuit or by arithmetic processing.
[0022]
Next, FIG. 4 shows a schematic configuration of the operation panel of this digital mixer.
The operation panel 100 includes a display 50, and operates various operators while referring to a display screen displayed here, thereby instructing change of parameters used for signal processing in the DSP 17 and the like. Is for editing. As operators for this purpose, a ch strip 20, a layer selection key group 30, a cursor key 60, an increase / decrease operator 70, an enter key 80, and the like are provided. In addition, the scene operation unit 40 is provided with an operator and a display for receiving and displaying operations related to storage (store) and recall (recall) of scenes (setting data).
[0023]
First, an outline of the function of the operator provided in a portion other than the scene operation unit 40 will be described.
As for the ch strip 20, here, 16 ch strips 20 are provided side by side. Each channel strip 20 is assigned an electric fader 21 for setting an output level, an on switch 22 for setting on / off, a selection switch 23 for selecting a corresponding channel, and a parameter selected by the user. And a rotary encoder 24 used for controlling the parameters. If there is no problem in terms of cost and space, an operator or a rotary encoder corresponding to another parameter may be provided.
Each channel strip 20 is assigned either the input channel 140 or the output channel 150 shown in FIG. 2, and each operator of the channel strip 20 basically controls the parameters of the channel and sets the value. Functions as an operator for setting.
[0024]
Further, although the channel assignment to the ch strip 20 is performed using layers, each key of the layer selection key group 30 is a key for selecting this layer and assigning a channel to the ch strip 20. . For example, when the layer 1 selection key 31 is pressed, the first layer can be selected and the first to sixteenth input channels can be assigned to each channel strip 20. Other layers can also be selected by pressing other layer selection keys. The layer to which the output channel 150 is assigned is prepared as a master layer, and this layer can be selected by the master layer selection key 35.
[0025]
The cursor key 60 is an operator for operating a cursor displayed on the display screen of the display device 50 (not limited to the recall safe setting screen 200 described later). The increase / decrease operator 70 is an operator for increasing / decreasing the parameter displayed at the cursor position on the display screen. The increase / decrease operation element 70 is composed of a rotary encoder 71 and an increase key 72 and a decrease key 73, and either can be used to instruct increase / decrease. Then, after the increase / decrease setting is made, the changed value can be validated by pressing the enter key 80. However, for parameters that can be changed continuously, the changed value is validated each time an increase / decrease instruction is given. Parameter editing can also be performed by selecting parameters to be changed sequentially on the display screen of the display 15 by using these operators and instructing the change.
[0026]
Next, functions of the scene operation unit 40 will be described.
This mixer stores a plurality of setting data indicating the setting state of the device as scenes with numbers, and stores them in the scene data memory on the RAM 13 in a library format, and calls an arbitrary scene from them according to the user's operation. Current data and control the operation of the entire mixer including signal processing in the DSP 17 in accordance with the current data. The scene operation unit 40 has a function of receiving and displaying an operation for instructing the storage (store) and recall (recall) of the scene.
[0027]
As shown in FIG. 4, the scene operation unit 40 includes a protection status indicator 41, a scene number indicator 42, an up key 43, a down key 44, a recall key 45, a store key 46, and a recall safe setting screen display key. 47 is provided. Of these, the indicators 41 and 42 correspond to the indicator 15 in FIG. 1, and the other keys 43 to 47 correspond to the switch 18.
The protection state display 41 is a display that displays which protection setting is reflected in the scene with the number currently displayed on the scene number display 42. The protection setting and its type will be described later.
[0028]
The scene number display 42 is a display that displays the number of the scene to be recalled or stored in three digits, and is in ascending order when the up key 43 is pressed, and in descending order when the down key 44 is pressed. Change the number.
When a desired number is selected with these keys and then the recall key 45 is pressed, the scene of that number is read from the scene data memory and is recalled by making it the current data. Then, the signal processing in the DSP 17 is controlled in accordance with the new current data, and the display data of the display 50 and the position of the electric fader 21 are changed. The scene read here is finally stored in the current memory on the RAM 13 as current data, but there are several possible processes so far, which will be described in detail later.
[0029]
Here, when the electric fader 21 or the switch 18 is operated after the display 50 or the position of the electric fader 21 is changed, the current data is changed in accordance with the operation. Therefore, the scene can be edited by operating the electric fader 21 and the switch 18. When the store key 46 is pressed, the current data at that time is stored and stored in the scene data memory as the selected scene number. The CPU 11 controls the scene recall, edit, and store processes.
[0030]
The contents of the scene data memory can be stored in the flash memory 12 in response to a user's save instruction. Conversely, a scene library stored in the flash memory 12 is stored in the RAM 13 in accordance with a user's load instruction. It can be read out to the scene data memory. This is an operation different from the recall and store for each scene described here. Since the flash memory 12 has a limited number of rewrites, detailed editing for each scene is stored in the scene data memory on the RAM 13. In this state, after editing as many scenes as necessary, the final result can be stored in the flash memory 12.
[0031]
The recall safe setting screen display key 47 is a key for causing the display device 50 to display the recall safe setting screen 200. FIG. 5 shows a display example of the screen. In this figure, hatching indicates that the key is in an ON state or a selected state. In addition, pressing of keys on the screen can be performed using the cursor key 60 and the enter key 80, a pointing device such as a trackball, a touch panel, or the like.
[0032]
The recall safe setting screen 200 is a screen for accepting a protection setting for determining a parameter for leaving the original current data without performing the recall when the scene is recalled. Then, as shown in FIG. 5, a local setting key 201, a global setting key 202, a valid / invalid key 203, a clear all key 204, a safe mode key 205, a recall mode key 206, and a protection setting for performing general operations. An input channel selection unit 207, a bus selection unit 208, an effector selection unit 209, and a parameter selection unit 210, which are provided with keys for selecting channels and parameters to be performed.
[0033]
First, the local setting key 201 is a key for selecting a mode in which the protection setting is a local setting that is a scene-specific setting, and the global setting key 202 is a global setting that is a setting for the entire apparatus. This is a key for selecting a mode. Here, the protection setting made as a local setting becomes a part of the current data, and is stored as a local setting for the destination scene when the current data is stored, and the setting is reflected only when the scene is recalled. Is done. On the other hand, the protection setting performed as a global setting is a common setting for each scene. Note that these keys 201 and 202 are toggled, and when one of them is pressed, the ON / OFF state of all the other keys reflects the current setting state for the selected mode. Changed to
[0034]
The valid / invalid key 203 is a key for setting the validity / invalidity of the protection setting with a toggle. For scenes for which local settings are enabled, local protection settings are reflected at the time of recall, and for scenes for which local settings are disabled, global protection settings are reflected at the time of recall. If the global setting is also invalid at this time, the parameters are not protected, and all parameters are recalled.
When using a mixer, a common protection setting is used for most scenes, and special protection settings are often made only for some scenes. Therefore, by doing this, you can set global settings for common protection settings, enable local settings only for scenes with special protection settings, and reflect the local settings without changing the global settings. Therefore, a mixer with good operability that is well suited to the use case can be configured. In this case, since the local setting can be performed without considering the relationship with the global setting, the result of the calling process can be easily predicted when the setting is performed, and the setting can be easily performed.
[0035]
The clear all key 204 is a key for returning all the keys of the selection units 207 to 210 to the OFF state, and is provided for improving operability when setting is repeated from the beginning.
A safe mode key 205 and a recall mode key 206 are keys for selecting a selection mode when selecting a channel or a parameter by using the keys of the selection units 207 to 210. A safe mode key 205 is a key for selecting a safe mode, which is a first mode to be selected by turning on a channel or parameter key that is not recalled (protected), and a recall mode key 206 is a recall mode (recall mode). This is a key for selecting a recall mode, which is a second mode to be selected by turning on the ch and parameter keys (not protected). If it is desired to recall many parameters, the safe mode can be selected for efficient setting. Conversely, if only a few parameters are desired to be recalled, selecting the recall mode is efficient.
[0036]
Further, the selection by these keys 205 and 206 is a toggle, and when this selection is changed, the ON / OFF state of each key of each selection unit 207 to 210 is also changed so as to maintain the setting state at that time. Is done. When the clear all key 204 is pressed, all the keys of the selection units 207 to 210 are returned to the OFF state regardless of which method is used.
[0037]
The input channel selection unit 207 is provided with a key for selecting an input channel whose protection setting is to be changed, and is provided with 48 keys corresponding to 48 input channels. When any key is pressed, a key group for performing detailed protection settings for the input channel is displayed on the parameter selection unit 210 in a state reflecting the current setting contents.
These protection settings are performed for each predetermined group. Here, the FADER and ON keys are keys for selecting or deselecting the fader and ON parameters of fader & ON 144 in FIG. 3, respectively, PAN and ROUTING are pan & routing 145, EQ is equalizer 141, COMP Is a compressor 143, GATE is a noise gate 142, AUX SND and AUX ON are keys for selecting or deselecting each parameter of AUX on & send level 146, respectively, and ALL key 211 is a key for the selected channel. It is a key for selecting or deselecting all parameters at once. The parameters corresponding to these keys are the parameters of one group, and the protection setting is performed in units of groups. Some groups include a plurality of parameters such as a frequency characteristic, a gain, and a Q value for each of the three bands of LOW, MID, and HIGH, such as a parameter of the equalizer 141. Some include only one parameter.
[0038]
By operating these keys, it is possible to perform protection settings for the parameters of each group for each channel. For a channel for which recall execution is disabled for at least some groups (recall execution is possible in the recall mode), a key corresponding to that channel is displayed in the ON state in the input channel selection unit 207. ing.
[0039]
As in the case of the input channel selection unit 207, the bus selection unit 208 is provided with keys for selecting various buses 127 whose protection settings are to be changed. When these are pressed, a key group for performing detailed protection settings for the various buses 127 is displayed on the parameter selection unit 210 in a state reflecting the current setting contents. The display in this case is different from the display in the case of the input channel shown in FIG. 5 due to the different types of parameters, but the functions are the same, and detailed illustration and description are omitted.
In addition, the effector selection unit 209 is provided with a key for performing protection setting for the parameters of the built-in effector 123. With respect to the built-in effector 123, the entire parameters for one effector are grouped into one group. The protection is directly selected or deselected by a key provided at 209.
[0040]
This digital mixer accepts, as the above-described recall safe setting screen 200, protection settings for setting parameters not to be recalled at the time of recall as a group unit as settings for each scene and settings common to each scene. For each scene, it is possible to accept the valid / invalid setting of the protection setting for the scene. In the recall safe setting screen 200, the selection method of the protection target is different between the safe mode and the recall mode, but the content of the protection setting is finally the ON / OFF of the key (selection / non-selection for each group) and the mode. Depending on whether or not protection is performed, it is recognized and flagged indicating whether protection is performed or not for each group of parameters.
Further, the processing relating to the reception of the protection setting described above is performed by the CPU 11 executing a required control program, and in this processing, the CPU 11 and the operation elements on the operation panel 100 function as protection setting receiving means.
[0041]
Next, processing executed when a scene is recalled in this digital mixer will be described with reference to FIG. FIG. 6 is a flowchart showing this processing.
In this digital mixer, when a scene is selected in the scene operation unit 40 and the recall of the scene is instructed, the CPU 11 executes a required control program stored in the flash memory 12 to execute the flowchart of FIG. The process shown in FIG. The CPU 11 functions as a recall unit by executing this process.
[0042]
In this process, first, in step S1, the data of the selected scene is read from the scene data memory to the work memory.
Then, the processing of step S2 to S9, referring to the protection setting for each group of parameters, recall not (protection) is read only the parameters of a group that is set from the current memory, the scene calls to the work memory Overwrite the corresponding data. Here, regarding the protection setting, if the local setting for the selected scene is valid, the local protection setting is referred to. If the local setting is invalid, the current global protection setting is referred to. If the global protection setting is also invalid, it is treated that no protection is set for any parameter.
In the processes of steps S2 to S9 described above, the CPU 11 functions as a protection unit. Note that the processes in steps S9, a work memory, so that the scene change parameter is not performed recall of the recall scene to the same value as the current data is stored. Therefore, if the scene stored in the work memory at this time is used as current data, the scene is recalled according to the protection setting.
[0043]
Therefore, the subsequent steps S10 to S12 are performed, and the process is terminated by copying the scene in the work memory to the current memory and using it as new current data. In this case, as in the case of FIG. 9 described in the prior art, the contents of the current memory being copied are not reflected in the control such as signal processing. In these processes of steps S10 to S12, the CPU 11 functions as a current data changing unit.
[0044]
By doing in this way, even when it is possible to set a part of the data not to be recalled at the time of recall, a high-speed recall process can be performed.
In other words, during normal use, the number of parameters with protection set is often small, so by sequentially transferring parameters with protection set instead of parameters with no protection set, The number of times of individually transferring data can be greatly reduced. If protection is set for only two groups out of 100 groups of parameters, the conventional method described with reference to FIG. 9 requires 98 transfers, but if the method described here is 2 Only one transfer is required.
However, in the method described here, it is necessary to finally transfer the work memory scene to the current memory. However, if burst transfer is used, data up to a certain size can be transferred in the same amount of time, so this processing is much less than when transferring small data many times. A big time is not required. Accordingly, the time required for data transfer as a whole can be greatly reduced, and the speed of the recall process can be increased.
This is a feature of the present invention.
[0045]
Instead of transferring the scene to the current memory, the scene can be used as the current data even if at least the area storing the scene in the work memory is changed to the current memory. Such a change can be made, for example, by changing the value of the pointer indicating the address of the current memory. In this way, memory management becomes somewhat complicated, but the time required for data transfer can be further reduced, and the recall process can be further speeded up.
Further, it is not essential to perform the determinations in steps S3 and S6 for each group, and once it is determined which protection setting is to be referred to, the setting may be directly referred to.
[0046]
[Modification: FIGS. 7 and 8]
Next, a modification of the above-described embodiment will be described.
First, in the above-described embodiment, as in the conventional case described with reference to FIG. 9, the parameters of a group for which protection is not set may be copied from the work memory to the current memory. In this case, the process executed when the scene is recalled is as shown in the flowchart of FIG.
In this process, first, in step S21, the data of the selected scene is read from the scene data memory to the work memory. Then, in step S22, that is set so that the contents of the current memory being rewritten are not reflected in the control of signal processing or the like until rewriting at the time of recall is completed.
[0047]
Thereafter, by referring to the protection setting for each parameter group by the processing of steps S23 to S30, only the parameters of the group for which recall execution is possible (no protection is set) are read from the work memory and read out from the current memory. Overwrite the corresponding data among the current data stored in, and make it the current data. The protection setting to be referred to is the same as in the case of the process shown in FIG.
Then, after overwriting is completed for all necessary parameters, in step S31, the contents of the current memory are set to be reflected in the control again, and the process is terminated.
In this case, the speed of the recall process is about the same as in the conventional case, but the effect of improving the operability by accepting the setting of the protection local setting valid / invalid is the same as that of the above-described embodiment. It can be obtained in the same way as the case.
[0048]
By the way, when selection of parameters to be protected is accepted in the recall mode, it is conceivable that many parameters are set to be protected. As described above, the recall mode is a mode that allows efficient setting in such a case. In such a case, in the process shown in FIG. 6, it is conceivable that the number of times of data transfer increases and the speed of the recall process becomes slow. Conversely, it is considered that the number of times of data transfer can be reduced by reading the parameters of the group for which protection is not set as in the prior art and overwriting the current memory.
[0049]
Therefore, remember whether the protection setting was accepted in safe mode or recall mode, and at the time of scene recall processing, select the protection setting to be referenced after reading the selected scene data into the work memory. The type is checked, and the processing shown in FIG. 6 is selectively performed in the safe mode, and the processing shown in FIG. 7 is selectively performed in the recall mode, depending on which mode the protection setting is received in. You may do it.
In this way, it is possible to perform a transfer process suitable for the contents of the protection setting expected from the mode, and it is possible to further speed up the recall process as a whole.
[0050]
As another modification, the conventional mixer as described with reference to FIG. 9, such as the embodiment described above, protection of the scene that called the work memory is read the parameter set from the current memory Processing for overwriting corresponding data may be applied. In this case, the process executed when the scene is recalled is as shown in the flowchart of FIG. The processing of each step constituting this processing is the same as the processing of the same number shown in FIG. 6 or FIG. However, the branch direction is reversed for step S104 ′.
In such a case, the effect of improving the operability in the above-described embodiment is naturally not obtained, but the effect of speeding up the recall process can be obtained in the same manner as in the above-described embodiment.
[0051]
In addition, as for the method for reflecting the local and global protection settings, the method for excluding the parameter set to the recall inexecutable at least on the other hand as described in the section of the problem to be solved by the invention is not necessarily the above-mentioned method. It is not necessarily inferior to the system of the embodiment, and may be preferable to the system of the embodiment. Therefore, any one of these methods may be selected. In this way, the optimum method can be selected according to the user's wishes, and the operability of the entire mixer can be further improved.
[0052]
In addition to an enable / disable setting, an operator for temporarily disabling all local protection settings may be provided. In this case, when this operation element is operated, the CPU 11 performs the processing shown in FIG. 6 on the assumption that the local protection setting for all the scenes is invalid. Processing is performed according to the valid / invalid setting. In this way, even if it is inconvenient to reflect the local protection settings, such as when a situation different from the schedule occurs, you can disable the local protection settings and reflect the global protection settings with a single touch. The convenience of the apparatus can be improved.
An operator with the same function may be provided for global protection settings.
In the above-described embodiment, the example in which the protection setting of the parameters of each group can be performed for each channel using the keys of the input channel selection unit 207 and the parameter selection unit 210 has been described. The protection setting performed by the parameter selection unit 210 may be commonly applied to all the channels selected by the selection unit 207.
[0053]
Furthermore, the arrangement of the controls, screen display, parameter types, grouping units, selection methods, and the like are not limited to those described above. Of course, the present invention can be applied not only to the digital mixer as described above but also to various acoustic signal processing apparatuses including a recorder, an editing apparatus, and an electronic musical instrument.
Further, a program for realizing the above functions in the above-described mixer is stored in advance in the flash memory 12 or the like, and is provided by being recorded in a non-volatile recording medium (memory) such as a CD-ROM or a flexible disk. The CPU 11 causes the program to be read from the memory into the RAM 13 and executed, or downloaded from an external device having a recording medium storing the program or an external device stored in a storage means such as a hard disk drive (HDD). Even if it is executed, the same effect can be obtained.
[0054]
【The invention's effect】
As described above, according to the audio signal processing device of the present invention, the recall processing result can be changed while changing the parameters to be recalled for each scene data without changing the setting of the entire device. It can be easily predicted.
Further, according to the program of the present invention, the above features can be realized by causing a computer to function as such an acoustic signal processing device, and similar effects can be obtained.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a digital mixer which is an embodiment of an acoustic signal processing apparatus of the present invention.
FIG. 2 is a block diagram showing the configuration of the DSP shown in FIG. 1 in more detail.
3 is a block diagram showing a configuration of one channel constituting the input channel shown in FIG. 2. FIG.
4 is a diagram showing a schematic configuration of an operation panel of the digital mixer shown in FIG. 1; FIG.
FIG. 5 is a diagram showing an example of a recall safe setting screen displayed on the display shown in FIG. 4;
6 is a flowchart showing processing executed when a scene is recalled in the digital mixer shown in FIG. 1; FIG.
FIG. 7 is a flowchart showing processing corresponding to FIG. 6 in a modification of the embodiment of the present invention.
FIG. 8 is a flowchart showing processing in another modified example.
FIG. 9 is a flowchart showing an example of processing executed when a scene is recalled in a conventional digital mixer.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... CPU, 12 ... Flash memory, 13 ... RAM, 14 ... External device I / F, 15 ... Display, 16 ... Sound signal input / output unit, 17 ... DSP, 18 ... Switch, 19 ... System bus, 20 ... ch Strip, 21 ... Electric fader, 22 ... On switch, 23 ... Selection switch, 24 ... Rotary encoder, 30 ... Layer selection key group, 40 ... Scene operation unit, 41 ... Protection status indicator, 42 ... Scene number indicator, 43 ... Up key, 44 ... Down key, 45 ... Recall key, 46 ... Store key, 47 ... Recall safe setting screen display key, 50 ... Display, 60 ... Cursor key, 70 ... Increase / decrease operator, 80 ... Enter key, 100 ... Operation panel 200 ... Recall safe setting screen 201 ... Local setting key 202 ... Global setting key 203 ... Valid / No Key 204 ... clear all key 205 ... safe mode keys, 206 ... recall mode key, 207 ... input ch selection unit, 208 ... bus selection unit, 209 ... effector selection section, 210 ... parameter selection unit, 211 ... ALL key

Claims (4)

An acoustic signal processing device that performs signal processing on an acoustic signal and outputs the signal,
A scene data memory for storing a plurality of scene data each consisting of a plurality of groups of data indicating a setting state of the device;
Current memory for storing current data indicating the current state of the device;
Control means for controlling the signal processing based on the current data;
Recall means for recalling scene data stored in the scene data memory to the current memory as the current data;
Protection setting reception means for receiving a protection setting for determining a group that maintains the state of the current data when recalling scene data by the recall means among the plurality of groups,
The recall means includes
Means for recalling scene data to be recalled from the scene data memory to a work memory;
Of the current data, the data of the group that is determined to maintain the state of the current data by the protection setting is read from the current memory, and overwritten on the corresponding data of the scene data called to the work memory Protective measures to
Acoustic signal processing , comprising: current data changing means for using scene data stored in the work memory in which all necessary data is overwritten by data in the current memory as the current data apparatus. The acoustic signal processing device according to claim 1,
The acoustic data, wherein the current data changing means is means for using the scene data stored in the work memory as the current data by copying the contents of the work memory to the current memory. Processing equipment. The acoustic signal processing device according to claim 1,
The current data changing means is means for changing at least a part of the work memory to the current memory so that the scene data stored in the work memory is used as the current data. Acoustic signal processing device. The acoustic signal processing device according to any one of claims 1 to 3,
A first mode for accepting selection of a group for maintaining the state of the current data, and a second mode for accepting selection of a group for recalling the scene data ; Means to do in
When the protection setting accepting unit accepts the protection setting in the second mode, the calling unit prevents the protection unit and the current data changing unit from operating, and sets the scene data to be recalled . An acoustic signal processing apparatus comprising means for reading out the data of the group to be recalled from the scene data memory and overwriting the corresponding data among the current data stored in the current memory.

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