JP4134905B2 - Acoustic signal processing apparatus and program - Google Patents

Description

  The present invention relates to an acoustic signal processing device for processing an acoustic signal according to predetermined parameters, in particular, an acoustic signal processing device having a function of receiving and processing MIDI system exclusive data, and such an acoustic signal processing device to a computer. It is related with the program for controlling.

Conventionally, the MIDI (Musical Instruments Digital Interface: registered trademark) standard is known as a format for describing data relating to acoustic signal processing. In the MIDI standard, a format called system exclusive data is defined. This format of system exclusive data is a format for transmitting device-specific data, and the content of the format can be freely defined by the device manufacturer. Examples of the contents of this definition include those described in Non-Patent Document 1.
Further, in an apparatus that handles MIDI standard data, generally, a storage area (start address) and a storage capacity (data amount) in the internal memory are fixedly determined for each parameter type, so that the storage area of the internal memory is set. Assigning to each parameter accurately and efficiently was performed. An example of such assignment is also described in Non-Patent Document 1.

By the way, since the start address and the data amount of each parameter are known in the apparatus performing such assignment, when trying to rewrite a specific parameter, the predetermined data is obtained from the start address of the parameter in the internal memory. It is only necessary to rewrite the amount of data.
On the other hand, the device receiving the system exclusive data knows the capacity of data to be written to the specified address, and does not record if the data instructed to write does not match that capacity. It was like that. This is to prevent the amount of data from being too large and overwriting a part of the next parameter, or conversely being too small to partially leave the previous data.
“MU1000 MU2000 TONE GENERATOR List Book”, Yamaha Corporation, 1999, p. 91-121

  However, even if the data capacity does not match the predetermined value, it is not preferable to ignore the received data. For example, there are cases where the capacity of the corresponding parameter differs depending on the model because the parameters can be set finely in the higher model, etc. In such a case, it is preferable that the received parameter can be recorded.

  The present invention solves such a problem, and in an acoustic signal processing apparatus that processes an acoustic signal according to a predetermined parameter value, the amount of parameter data received in the format of MIDI system exclusive data is secured in the internal memory. It is an object of the present invention to appropriately store the contents of received parameters even if they do not match the storage capacity.

In order to achieve the above object, in an acoustic signal processing apparatus for processing an acoustic signal according to a value of a predetermined parameter, parameter storage means for storing the value of the parameter in a predetermined recording address with a predetermined amount of data , The specification information storage means for storing the specification information specifying the recording address and data amount of the parameter for each type, the receiving means for receiving the system exclusive data of the MIDI standard, and the system exclusive data received by the means from the system exclusive data Discriminating means for discriminating the type of parameter included in the exclusive data, data amount acquiring means for acquiring the data amount corresponding to the parameter type discriminated by the means with reference to the specified information, and receiving means receiving the data Parameters in the system exclusive data The data amount of data values, if the data amount acquisition unit does not match the data amount, and converts the parameter values to the data of the upper Symbol data amount acquisition unit acquires the amount of data, the parameter storage Recording means for recording at a recording address in accordance with the above-mentioned regulation information .

  In such an acoustic signal processing device, the recording means is provided with means for performing the conversion by a plurality of conversion methods, and the conversion is performed for each type of the parameter as the specified information in the specified information storage means. Means for storing information defining which of the plurality of conversion methods is to be used, and when the conversion is performed on the recording means, a conversion method corresponding to the type of parameter determined by the determination unit is provided. It is preferable to provide means for obtaining the reference information and performing the conversion using the acquired conversion method.

Further, the program of the present invention includes a parameter storage means for storing a parameter value relating to acoustic signal processing in a predetermined recording address with a predetermined data amount, and a recording address and data amount of the parameter for each type of the parameter. Stipulated information storage means for storing stipulated information, receiving means for receiving system exclusive data of the MIDI standard, and the type of parameter included in the system exclusive data is determined from the system exclusive data received by the means A determination unit, a data amount acquisition unit that acquires a data amount corresponding to the type of parameter determined by the unit with reference to the regulation information, and a data amount of a parameter value in the system exclusive data received by the reception unit However, the above data amount acquisition If the stage does not match the acquired data amount, and converts the parameter values to the data of the upper Symbol data amount acquisition unit acquires the amount of data of the parameter memory means, a recording address in accordance with the regulatory information It is a program for making it function as a recording means to record.

  According to the acoustic signal processing system of the present invention as described above, in the acoustic signal processing device that processes the acoustic signal according to the value of the predetermined parameter, the data amount of the parameter received in the MIDI system exclusive data format is stored in the internal memory. Even if the storage capacity does not match the storage capacity, the contents of the received parameter can be stored appropriately. Further, according to the program of the present invention, the same effect can be obtained by causing the computer to control the acoustic signal processing device.

Hereinafter, the best mode for carrying out the present invention will be specifically described with reference to the drawings.
First, the configuration of a mixer engine which is an acoustic signal processing device of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of the mixer engine.
In the mixer engine 10, the acoustic signal processing unit is configured using a processor that can operate according to a program, and a computer such as an external PC (personal computer) is made to function as an editing device, and signal processing edited using the computer is performed. This is an acoustic signal processing apparatus that can process an acoustic signal based on the configuration.

  The CPU 11, flash memory 12, RAM 13, display 14, operator 15, PC input / output unit (I / O) 16, MIDII / O 17, other I / O 18, waveform I / O 19, signal processing unit (DSP) 20 , Cascade I / O 21, which are connected by a CPU bus 22. A function for generating a microprogram for controlling the DSP 20 according to the signal processing configuration received from the PC 30, operating the DSP 20 according to the microprogram, performing various signal processing on the input acoustic signal, and outputting it. Have.

The CPU 11 is a control unit that performs overall control of the operation of the mixer engine 10, and by executing a predetermined program stored in the flash memory 12, communication in each I / O 16 to 19, 21 and display on the display 14 are performed. A microprogram for operating the DSP 20 is generated from the signal processing configuration information received from the PC 30 and set in the DSP 20. Process.
The flash memory 12 is a rewritable nonvolatile storage unit that stores a control program executed by the CPU 11 and an assignment table and a parameter table described later.

The RAM 13 is a storage means for storing data to be temporarily stored and used as a work memory for the CPU 11.
The display device 14 is a display means constituted by a liquid crystal display (LCD) or the like. Then, a screen showing the current state of the mixer engine 10, a screen for referring to, changing, storing, etc., parameters relating to signal processing are displayed.
The operation element 15 is configured by a key, a switch, a rotary encoder, and the like, and is an operation element for the user to directly operate the mixer engine 10 to edit parameters.

The PCI / O 16 is an interface for communicating with the PC 30 and can be, for example, a USB (Universal Serial Bus) type interface or an interface for performing communication by Ethernet (registered trademark).
MIDII / O17 is an interface for exchanging data in accordance with the MIDI standard including system exclusive data. For example, MIDII / O17 communicates with an electronic musical instrument compatible with MIDI or a computer equipped with an application program for outputting MIDI data. Used to do.

  The waveform I / O 19 is an interface for receiving an input of an acoustic signal to be processed by the DSP 20 and outputting the processed acoustic signal. This waveform I / O 19 includes 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 channels by one board. A plurality of digital input / output boards capable of digital input / output can be mounted in an appropriate combination, and signals are actually input / output through these boards.

  The cascade I / O 21 is an interface for exchanging acoustic signals, data and commands from the PC 30, etc. with other mixer engines when using a plurality of mixer engines 10 connected in cascade. When a plurality of mixer engines 10 are used in cascade connection, a plurality of mixer engines 10 can be operated cooperatively to perform a series of acoustic signal processing. Then, the PC 30 edits such acoustic signal processing, transfers the editing result to other mixer engines 10 via the mixer engine 10 directly connected to the PC 30, and edits each mixer engine 10. Can be operated according to.

The other I / O 18 is an interface for connecting and inputting devices other than those described above. For example, an interface for connecting an external display, a mouse, a keyboard for inputting characters, an operation panel, and the like is prepared.
The DSP 20 is a signal processing unit that includes a signal processing circuit and performs signal processing on the acoustic signal input from the waveform I / O 19 in accordance with the current data that determines the set microprogram and acoustic signal processing parameters. This current data is stored in a memory provided in the RAM 13 or the DSP 20 itself, and the storage means for storing the current data corresponds to the parameter storage means.

  Such a mixer engine 10 changes the parameter value in the current data set in the DSP 20 according to the MIDI standard system exclusive data received via the PCI / O16, MIDII / O17 or the cascade I / O21. Can do. In this case, the I / O that received the system exclusive data and the CPU 11 correspond to the receiving means. It is also possible to transmit system exclusive data to another mixer engine cascade-connected via the cascade I / O 21 and change the parameter value accordingly.

Next, the system exclusive data (hereinafter referred to as “exclusive data”) and the parameter changing process according to this data will be described.
First, FIG. 2 shows the structure of exclusive data. As shown in this figure, the exclusive data is roughly divided into “identification data”, “start address”, and “parameter value” data. In the mixer engine 10, the format of the exclusive data in the conventional apparatus is used as it is, but the meaning of each data is different from the conventional one.

  That is, among the data shown in FIG. 2, the “start address” data is data indicating the write address itself of the internal memory in the conventional apparatus, but in the mixer engine 10 this is indirectly parameterized. It is used as data representing the type of The “parameter value” is data to be written to the write address in the conventional apparatus, but in the mixer engine 10, the parameter value is data indicating the parameter value to be written to the write address determined according to the type of parameter. is there. “Identification data” is data indicating information such as the company ID, device number, and model ID of the apparatus that created the exclusive data, and this point is not different from the conventional one.

In addition to these, there are data indicating a status byte and end-of-exclusive data, but the meaning of these data is the same as in the prior art, and illustration of these is omitted.
Further, the mixer engine 10 stores the following assignment table and parameter table in a storage unit such as the flash memory 12 in order to interpret the contents of the exclusive data as described above.

First, FIG. 3 shows an example of an assignment table.
This assignment table is a table showing the correspondence between the “first address” shown in FIG. 2 and the parameter ID. However, since the data of the “start address” is data that indirectly represents the type of parameter in the mixer engine 10 as described above, the data amount of the parameter is not taken into consideration, and a continuous number is assigned to each parameter. assign. It is also conceivable that the parameter ID is directly written at the address indicated by the “first address” without using the assignment table in the table format.
That is, the assignment table is a table used to determine the type of parameter included in the exclusive data from the data of the “first address” included in the exclusive data, and any format may be used as long as this requirement is satisfied. .

Such an assignment table may be shared with a device on the exclusive data transmission side, and the “head address” corresponding to the parameter ID may be described and transmitted in the exclusive data in the device on the transmission side. Alternatively, if the transmitting device recognizes that the address itself is described in the “starting address” as in the past, the conventional starting address and parameter type specified in the transmitting device The correspondence relationship between the address and the parameter ID may be described in the assignment table so as to match the correspondence relationship. In the latter case, it is not necessary for the transmitting apparatus to store the assignment table.
Depending on the signal processing configuration, there may be a case where a plurality of components having the same function are included and a plurality of parameters having the same name are used accordingly. However, even in such a case, when these constituent elements are distinguished by a unique ID or the like, the parameters are also distinguished and given different IDs.

Next, FIG. 4 shows an example of a parameter table.
This parameter table is a table that records, for each parameter, definition information indicating the correspondence between the “parameter ID” shown in FIG. 3, the data amount of the parameter, the recording address, and the conversion method. The storage means for storing this parameter table corresponds to the regulation information storage means.
Of the above data, “data amount” is data indicating how many bytes the parameter value is. “Recording address” is data indicating the leading address of the position where the parameter data is to be stored in the internal memory. “Conversion method” is data that specifies the conversion method of data conversion to be performed when the number of bytes of “parameter value” in the received system exclusive data does not match the number of bytes indicated in the data amount item. is there. The mixer engine 10 supports a plurality of conversion methods, “# 1” corresponds to relative conversion, and “# 2” corresponds to absolute conversion.

Next, these data conversion methods will be described.
FIG. 5 is an explanatory diagram for relative conversion.
Relative conversion is a conversion method applied when the position of a parameter value number is within a possible range of the parameter value, that is, when the relative value of the parameter is meaningful. Therefore, even when changing the number of bytes of data, the conversion is performed so as to maintain the relative value of the parameter. Such conversion can be applied to, for example, a master tune or a master volume.

In the data of the MIDI standard, the most significant bit of each byte is a flag indicating whether the byte is a status byte or a data byte. Therefore, data can be written in the other 7 bits in each byte. it can. Accordingly, 2 ¹⁴ kinds of values from 0 to 2 ¹⁴ −1 can be expressed with 2 bytes of data. The 2 ⁷ kinds is one byte of data, it is possible to represent 2 ²⁸ different values are 4-byte data.

Then, for example, parameters, consider the case where taking a 2 ¹³ values of approximately corresponds to a central value that can be represented by 2 bytes, as shown in FIG. In this case, if the relative conversion to 4 bytes by increasing the number of bytes the parameter, its value may be set to 2 ²⁷ hit approximately in the center of the values that can be represented by 4 bytes. As a specific process, the lower byte of all zeros may be added to the original data of 2 bytes, which is 2 bytes, which is an increase in the number of bytes.

Conversely, if the number of bytes of this parameter is reduced to 1 byte by relative conversion, the value may be ²⁶ , which is approximately the center of the value that can be expressed by 1 byte. As a specific process, it is only necessary to delete the lower byte of the original two-byte data by 1 byte, which is a reduced number of bytes, and make the remaining upper byte data only. If the value of the most significant data bit among the deleted bytes is 1, 1 is added to the least significant byte of the remaining bytes, and rounding such as rounding is performed.
By such processing, conversion that maintains the relative values of the parameters is realized.

Next, FIG. 6 shows an explanatory diagram of absolute conversion.
The absolute conversion is a conversion method applied when the parameter number itself, that is, the absolute value of the parameter is meaningful. Therefore, even when the number of data bytes is changed, the conversion is performed so as to maintain the numerical value indicated by the parameter. Such conversion can be applied to the effect type number, for example.
As an example of absolute conversion, consider a case in which a certain 2-byte parameter has a value of “4” (“100” in binary). Even if the number of bytes of this parameter is increased to 4 bytes by absolute conversion, the value remains “4”. Therefore, in this case, it is only necessary to add the upper bytes of all zeros to the original 2 bytes of data, that is, 2 bytes, which is an increase in the number of bytes.

Conversely, even if the number of bytes of this parameter is reduced to 1 byte by absolute conversion, the value remains “4”. Therefore, it is only necessary to delete the upper byte of the original two bytes of data by 1 byte, which is a decrease in the number of bytes, and use only the remaining lower bytes. If the byte data to be deleted is not 0, the original value cannot be expressed only by the remaining lower bytes. In such a case, for example, it is conceivable to set the converted data to all 1 to indicate the maximum value.
By such processing, conversion that maintains numerical values of parameters is realized.
Needless to say, the above relative conversion and absolute conversion can be similarly applied to data other than the number of bytes shown in FIG.

Next, processing performed using each table described above when the mixer engine 10 receives exclusive data will be described. This process is shown in FIG.
When the mixer engine 10 receives exclusive data from any I / O, the CPU 11 starts a process shown in the flowchart of FIG. 7 by executing a required control program.
First, in step S1, the “identification data” of the exclusive data is referred to, and it is determined whether or not the exclusive data is data created by an appropriate device. If an appropriate device has been created, the process proceeds to step S2 and subsequent steps. If not, the process ends. This is because the following processing cannot be normally performed when the data creator does not recognize at least the contents of the assignment table.

In the next step S2, the type of parameter described in the exclusive data is determined with reference to the assignment table shown in FIG. 3 based on the information of the “start address” in the received exclusive data. Specifically, the parameter ID is read out. In this process, the CPU 11 functions as a determination unit.
Next, in steps S3 and S4, the data amount of the parameter in the received exclusive data is confirmed, and the “data amount” value corresponding to the parameter type determined in step S2 is obtained by referring to the parameter table. To do. Among these, in the process of step S4, the CPU 11 functions as a data amount acquisition means. Here, the “parameter type” is indicated by, for example, the parameter ID read in step S2. The same applies to the following.

In step S5, the data amounts obtained in steps S3 and S4 are compared. If they do not match, the process proceeds to step S6 and subsequent steps. In steps S6 and S7, a conversion method corresponding to the type of parameter is obtained by referring to the parameter table, the data amount of the parameter in the exclusive data received by the conversion method is converted, and stored in the mixer engine 10 The amount of data is suitable for. In steps S8 and S9, the recording address corresponding to the parameter type is obtained by referring to the parameter table, the converted parameter value is written to the address, and the process is terminated.
On the other hand, if they match in step S5, in steps S10 and S11, the recording address corresponding to the parameter type is obtained by referring to the parameter table, and the value of the parameter in the received exclusive data is written to that address. The process ends.
In the processes of steps S5 to S11 described above, the CPU 11 functions as a recording unit.

By performing the above process, the mixer engine 10 can record the parameters described in the exclusive data at an appropriate recording address when the exclusive data is received. Further, even when the amount of received data does not match the storage capacity secured in the internal memory, it can be recorded after being converted into data of an appropriate amount of data. Furthermore, even when the parameter recording address or data amount is changed, it is possible to easily cope with this change by editing the parameter table, and it is not necessary for the sender of the exclusive data to recognize this change. Therefore, it is possible to flexibly cope with the configuration change of the parameter storage area.
Note that the type of parameter can be changed by changing the contents of the assignment table. In this case, however, it is necessary for the source of the exclusive data to recognize the changed contents.

For example, when the mixer engine 10 receives a new signal processing configuration from the PC 30 and switches the signal processing content in the DSP 20 to the content according to the new signal processing configuration, the type and number of parameters change. Accordingly, the configuration of the parameter storage area in the memory is also changed.
In this case, the processing shown in the flowchart of FIG. 8 is performed to change the contents of the assignment table and the parameter table to those corresponding to the signal processing configuration after switching. This process is started when the CPU 11 receives an instruction to change the signal processing configuration in the DSP 20, and at that time, for each parameter that performs communication using exclusive data in the new signal processing configuration, the "start address" ”,“ Parameter ID ”,“ data amount ”,“ storage address ”, and“ conversion method ”information are acquired, and the contents of the assignment table and parameter table are changed according to the information. This change may be made by partially changing an existing table or by creating a new table.
In this way, when exclusive data is received, parameters can be stored with a storage address and data length corresponding to a new signal processing configuration.

In addition to when changing the signal processing configuration, when the user gives an instruction to add a parameter, change the data amount, etc., the processing shown in FIG. 9 is performed, and the contents of each table according to the received instruction. Should be changed. This process is started when the CPU 11 receives an instruction to add a parameter or change a data amount. At this time, for each parameter to be added or changed, a “start address”, “parameter ID”, “ Information of “data amount”, “storage address”, and “conversion method” is acquired or set, and the contents of the assignment table and parameter table are changed according to the contents. This change may also be made by changing a part of an existing table or by creating a new table.
In this way, even when the parameter configuration is changed according to the user's wishes, the data can be stored according to the configuration set by the user when the exclusive data is received.

  As a result of these changes, the contents of the parameter table may be different for each apparatus. Even in this way, each device that receives the exclusive data can refer to its own parameter table and store the parameters included in the exclusive data with an appropriate storage address and data amount. That is, even when the configuration of the parameter storage area is different for each device, communication can be performed using common exclusive data.

On the other hand, it is preferable to notify (send) the change contents of the assignment table to all devices sharing the assignment table with the mixer engine 10. This is because it is not essential that the contents of the assignment table be completely the same between the apparatuses, but at least the part related to the parameter to be communicated needs to be the same.
Such notification may be performed only for the PC 30 if communication is performed only in the system as shown in FIG. 1. What is necessary is just to go to the mixer engine in addition to PC30. And these other parties are the other parties who normally communicate. Therefore, when communication is performed only within a limited system, the point that notification is required is not particularly problematic.

  However, there are cases where communication with an unspecified number of devices such as all devices of a certain model is assumed. Although it is conceivable that the mixer engine 10 can receive and process exclusive data from a MIDI-compatible electronic musical instrument, for example, this is the case. In such a case, it is extremely difficult to notify all of these devices of the contents of the assignment table. Therefore, in such a case, it is preferable not to allow the assignment table to be changed.

In such a case, it is preferable that all possible parameter types are described in the assignment table in advance. Since the contents of the parameter table can be freely changed on the mixer engine 10 side, there is no problem. By doing so, it is possible to widely cope with the addition of parameter types without converting the assignment table. On the other hand, since only the information of “head address” and “parameter ID” is registered in the assignment table, even if a large number of parameters are registered, the capacity can be relatively small.
It is also conceivable to store a plurality of assignment tables on the mixer engine 10 side and select an assignment table to be used according to the model of the exclusive data transmission source. In this way, detailed response according to the model of the communication partner becomes possible.

In the embodiment described above, an example in which the conversion method itself is described as the parameter conversion method in the parameter table has been described. However, it is also conceivable to describe whether each parameter value is a relative value or an absolute value, and to select a conversion method according to the contents.
Also, the conversion method is not limited to that described above. For example, a method of storing a table in which the state in the number of bytes before conversion and the state in the number of bytes after conversion are stored for each data value, and converting the number of bytes of data by referring to the table Is also possible. Of course, other methods can be adopted, and the number of selectable conversion methods is not particularly limited.
Further, data indicating the number of converted data bytes and the conversion method may be described in the exclusive data, and the conversion may be performed in accordance with the contents.

  Also, it is not essential to provide the assignment table and the parameter table separately. The content of the assignment table needs to be recognized by the sender of the exclusive data at least for the part used for communication. The content of the parameter table may be freely changed on the mixer engine 10 side, and may be changed relatively frequently. These are separated from each other in order to simplify handling at the time of change due to the difference in characteristics. However, these can be combined into one table.

Furthermore, in the embodiment described above, the example in which the present invention is applied to a so-called programmable mixer has been described, but it goes without saying that the present invention is not limited to this. The present invention can be applied to any acoustic signal processing apparatus capable of handling MIDI standard data, such as a digital mixer, a synthesizer, a sound generator, an electronic musical instrument, and a computer having an application for acoustic signal processing. There is no problem even if the parameter storage area has a fixed configuration.
Similarly, the device on the transmission side of the exclusive data may be any acoustic signal processing device capable of handling MIDI standard data.

  Further, the above-described program of the present invention is stored in advance in the flash memory 12 or the like of the mixer engine 10 and is also provided by being recorded in a non-volatile recording medium (memory) such as a CD-ROM or a flexible disk. The program is read from the RAM 13 of the mixer engine 10 and executed by the CPU 11, or the program is downloaded from an external device provided with a recording medium storing the program or an external device stored in storage means such as an HDD and executed. However, the same effect can be obtained.

  As is apparent from the above description, according to the acoustic signal processing device or program of the present invention, in the acoustic signal processing device that processes the acoustic signal according to the value of the predetermined parameter, the parameter received in the format of the MIDI system exclusive data Even if the amount of data does not match the storage capacity secured in the internal memory, the contents of the received parameters can be stored appropriately. Therefore, it is possible to provide an acoustic signal processing device with a high degree of freedom of communication.

It is a block diagram which shows the structure of the mixer engine which is embodiment of the acoustic signal processing apparatus of this invention. It is a figure which shows the structure of the exclusive data of a MIDI standard. It is a figure which shows the structure of the assignment table which the mixer engine shown in FIG. 1 memorize | stores. It is a figure which similarly shows the structure of a parameter table. It is a figure for demonstrating the relative parameter value conversion which a mixer engine similarly performs. It is a figure for demonstrating absolute parameter value conversion similarly. It is a flowchart which shows the process performed when the mixer engine shown in FIG. 1 receives exclusive data. Similarly, it is a flowchart showing processing when the signal processing configuration is switched. Similarly, it is a flowchart showing processing when an instruction to change table contents is received.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Mixer engine, 11 ... CPU, 12 ... Flash memory, 13 ... RAM, 14 ... Display, 15 ... Operator, 16 ... PCI / O, 17 ... MIDII / O, 18 ... Other I / O, 19 ... Waveform I / O, 20 ... DSP, 21 ... Cascade I / O, 22 ... CPU bus, 30 ... PC

Claims (3)

An acoustic signal processing device that processes an acoustic signal according to a value of a predetermined parameter,
Parameter storage means for storing the value of the parameter in a predetermined recording address with a predetermined amount of data ;
Prescription information storage means for storing prescription information prescribing the recording address and data amount of the parameter for each type of the parameter;
Receiving means for receiving MIDI standard system exclusive data;
Discriminating means for discriminating the type of parameter included in the system exclusive data from the system exclusive data received by the means;
A data amount acquisition means for acquiring a data amount corresponding to the type of parameter determined by the means with reference to the regulation information;
The data amount of parameter values in the system exclusive data received by the receiving unit has when said data amount acquisition unit does not match the data amount, to acquire the parameter value before Symbol data amount acquisition device data is converted to the amount of data, the parameter storage means, recording means and the audio signal processing apparatus characterized in that a recording on a recording address in accordance with the definition information. The acoustic signal processing device according to claim 1,
The recording means is provided with means for performing the conversion by a plurality of conversion methods,
The provision information storage means includes means for storing, as the provision information, information for prescribing which of the plurality of conversion methods is adopted when the conversion is performed for each type of the parameter,
When the recording unit performs the conversion, the conversion unit corresponding to the parameter type determined by the determination unit is acquired with reference to the regulation information, and the conversion is performed using the acquired conversion method. An acoustic signal processing device comprising: Computer
Parameter storage means for storing a parameter value relating to acoustic signal processing in a predetermined recording address with a predetermined amount of data ;
Prescription information storage means for storing prescription information prescribing the recording address and data amount of the parameter for each type of the parameter;
Receiving means for receiving MIDI standard system exclusive data;
Discriminating means for discriminating the type of parameter included in the system exclusive data from the system exclusive data received by the means;
A data amount acquisition means for acquiring a data amount corresponding to the type of parameter determined by the means with reference to the regulation information;
The data amount of parameter values in the system exclusive data received by the receiving unit has when said data amount acquisition unit does not match the data amount, to acquire the parameter value before Symbol data amount acquisition device data is converted to the amount of data, said parameter storage means, a program to function as a recording means for recording the address in accordance with the definition information.

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