JP3508494B2 - Automatic performance data conversion system and medium recording program - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic performance data conversion technique, and more particularly to an automatic performance data conversion technique for converting one form into another form of automatic performance data.

[0002]

2. Description of the Related Art MIDI data is unified performance information that can be commonly used for electronic musical instruments. The GM standard is a rough standard for MIDI data. The GM standard merely determines the rules of basic performance information.
The GS standard is a more detailed version of the GS standard.
There are standards and XG standards. The GS and XG standards are both G
Although they comply with the M standard, the two are slightly different in detail. For example, the tone color numbers of both do not match in part. Moreover, the type of effect or the parameter of the effect is different.

Among electronic musical instruments or sound sources, there are those for GS standard and those for XG standard. For example, when MIDI data of the GS standard is supplied to an XG standard electronic musical instrument, the sound may be produced but may not be produced with a desired tone color or effect.

On the other hand, in recent years, online karaoke has become popular rapidly. To add a new song to this karaoke apparatus, automatic performance data for the song is created and the automatic performance data is supplied to the karaoke apparatus by communication. Therefore, as the number of songs increases, the automatic performance data also increases. In online karaoke, since automatic performance data for new songs are being created one after another, a large amount of automatic performance data is already available in the world.

The automatic performance data used for communication karaoke is based on MIDI data. MIDI
There are two types of data, the GS standard and the XG standard. Correspondingly, there are two types of automatic performance data, one of GS standard and one of XG standard.

For example, when the GS standard automatic performance data is played by an XG standard karaoke apparatus, the feeling of the music is slightly different due to a difference in tone color arrangement, and the original performance of the music cannot be expected. Further, even if a large amount of automatic performance data of a certain standard is held, it cannot be used in a karaoke device of a different standard, and resources of the automatic performance data are wasted.

[0007]

If the standard of MIDI data or automatic performance data is different, a slightly different sound is produced in the electronic musical instrument or the karaoke device,
Virtually unusable. Further, even if a large amount of MIDI data or automatic performance data is accumulated from the past to the present, it cannot be used in electronic musical instruments or karaoke devices of different standards, and a large amount of data is wasted.

An object of the present invention is to provide an automatic performance data conversion system, an automatic performance data conversion method or a medium having a program recorded therein, which can convert automatic performance data of a certain format into automatic performance data of another format. Is.

[0009]

According to one aspect of the present invention, an automatic performance data conversion system includes a plurality of first-form automatic performance data having tone color information including a plurality of tone colors in one tone color set. An automatic performance data conversion system for converting tones of a variety of types into automatic performance data of a second format having tone color information included in a plurality of tone color sets.
Inputting means for inputting automatic performance data in the form of, and timbre information contained in the automatic playing data in the first format inputted by the input means is converted into timbre information in the second format, and after conversion. Data conversion means for converting the second format automatic performance data in which channel information is organized for each tone format of the second format, and automatic performance after conversion of the second format data string converted by the data conversion means. And output means for outputting as data.

[0010]

[0011]

[0012]

[0013]

1 in the automatic play data of the first format
One channel information is sufficient, but a plurality of channel information may be required in the second type automatic performance data. In that case, one channel information in the automatic performance data of the first format is divided into a plurality of channel information to generate the automatic performance data of the second format. By dividing into a plurality of channel information, it is possible to perform proper automatic performance even in the automatic performance data of the second format.

[0015]

[0016]

According to still another aspect of the present invention, a first tone color set has tone color information including a plurality of tone colors.
An automatic performance data conversion method for converting the automatic performance data in the form of into a second format automatic performance data having tone color information in which the plurality of types of tone colors are included in a plurality of tone color sets,
(A) an input step of inputting the first-format automatic performance data; and (b) converting the tone color information contained in the first-format automatic performance data into the second-format tone color information. A data conversion step of converting and converting into second format automatic performance data in which channel information is organized for each tone format set of the second format after conversion; and (c) a second data converted by the data conversion step. And an output step of outputting a data string of the format as converted automatic performance data.

[0018]

[0019]

According to still another aspect of the present invention, a first tone color set has tone color information including a plurality of tone colors.
A program for causing a computer to execute an automatic performance data conversion program for converting the automatic performance data of the second format into the second format of the automatic performance data having the tone color information in which the plurality of types of tone colors are included in the plurality of tone color sets. The computer-readable recording medium according to claim 1,
Input procedure for inputting automatic performance data in the form of (b)
The tone color information included in the first-format automatic performance data input by the input procedure is converted into the second-type tone color information, and the channel information is organized for each converted second-type tone color set. It includes a data conversion procedure for converting into automatic performance data in the second format, and (c) an output procedure for outputting the data string in the second format converted by the data conversion procedure as converted automatic performance data.

[0021]

1 is a conceptual diagram showing the overall configuration of an automatic performance data conversion system according to an embodiment of the present invention.

The automatic performance data 2 of the first format is converted into the automatic performance data 6 of the second format via the computer 3. The computer 3 has a conversion rule file 4 storing conversion rules and a conversion processing unit 5. The conversion processing unit 5 converts the automatic performance data 2 into the automatic performance data 6 according to the conversion rules stored in the conversion rule file 4. The computer 3 may be a general-purpose computer such as a personal computer or a dedicated conversion device.

The automatic musical performance data 2 of the first format can be reproduced (played) by the electronic musical instrument 1 of the first format, and the automatic musical performance data 6 of the second format can be reproduced by the electronic musical instrument of the second format. The musical instrument 7 can be reproduced (played).

The automatic performance data 2 of the first format can be correctly reproduced (played) on the electronic musical instrument 1 for the first format, but cannot be correctly reproduced (played) on the electronic musical instrument 7 of the second format. . On the other hand, the second-format automatic musical performance data 6 can be correctly played (played) on the second-format electronic musical instrument 7, but cannot be correctly played (played) on the first-format electronic musical instrument 1.

Each of the electronic musical instruments 1 and 7 has a floppy disk drive (FDD), and the automatic performance data 2 or 6 can be stored in a floppy that can be inserted into and removed from the FDD. For example, the automatic performance data 2 used in the electronic musical instrument 1 is stored in the first floppy, and the first floppy is inserted into the computer 3.
The computer 3 reads the automatic performance data 2 stored in the first floppy and writes the automatic performance data 6 in the second floppy. If the second floppy in which the automatic performance data 6 is written is inserted into the electronic musical instrument 7, the electronic musical instrument 7
You can perform the correct performance in.

FIG. 2 shows the conversion rule file 4 shown in FIG.
It is a figure which shows the content of. The conversion rule file 4 has a header 4a, a conversion rule 4b, and a conversion table 4c.
The header 4a describes the file name necessary for conversion such as the conversion source format name, the conversion destination format name, the file name, and the file creation date.

The conversion table 4c is a melody tone color conversion table 4d for converting tone color numbers of melody tone colors (excluding rhythm tone color) and a rhythm tone color conversion table for converting tone color numbers of rhythm tone colors (excluding melody tone color). 4e, a velocity conversion table 4f for converting velocity data (initial touch) for each timbre, a volume conversion table 4g for converting a volume (volume) for each timbre, and another conversion table 4h for performing other conversions. .

The conversion table 4c converts data values. For conversion of data format (notation method), conversion is performed according to conversion rule 4b described later.
If only data values are converted, conversion table 4
It can be easily converted using c. For example, a program change (tone color number) or velocity (initial touch) during a note-on event can be converted by the conversion table 4c.

The conversion table 4c is a part that performs basic conversion, and is a conversion that must be performed in many cases. Therefore, the maker has previously prepared the conversion table 4c.
Can be created. In that case, the user can edit and change the conversion table 4c created by the manufacturer according to his / her preference. Of course, the user can also create a new conversion table.

The conversion rule 4b can be described in a simple language in a text format, and is for performing advanced conversion which is difficult to convert with the conversion table 4c. For example, conversion is performed for data with different data formats (description methods).

The conversion rule 4b converts, for example, effect imparting data. The effects include, for example, reverb (reverberation), phaser (phase modulation), vibrato, pitch change, and the like. These effects differ in the number of effects that can be supported (reverb, phaser, etc.) or effect parameters (depth of reverberation in the case of reverb, amplitude and speed in the case of vibrato), etc., depending on the model of the sound source. .

The effect imparting device often has a uniquely expanded function for each standard. Correspondingly, even in the automatic performance data, the code (data) system of the data regarding the effect is different for each standard.

If the code systems are different, it is difficult to perform conversion using the conversion table 4c described above.
Conversion is performed according to the conversion rule 4b. The conversion rule 4b is
Complex conversions can be performed, such as when the code systems are different. The maker or the user can describe the conversion rule 4b in a simple language. The format example of the conversion rule 4b is shown below.

Data? = Length1, data1 ..., type, length2, data2 ... <, length3, data3 ...> (1) where? Is the conversion rule number, length1, length2, le
ngth3 is the length of the data string of data1 ..., data2 ..., data3 ..., respectively. type indicates the type of conversion. Details of type will be shown later. <> Indicates that the format can be omitted.

In the above equation (1), the data string data1 ... is da
It is a rule for converting to ta2 ... If there is a data1 ... column in the automatic performance data, replace it with a data2 ... column.

If type is 0, unconditionally from data1 ...
Convert to data2 ... When type is 1, basically da
Convert ta1 ... to data2 ... However, data1 ...
If the conversion from data1 to data2 ... cannot be performed normally, the conversion from data1 ... to data3 ... is performed. Data string da
ta3 ... is an error code, for example.

Next, a specific example of a conversion rule for converting effect data will be shown. First form (form 1)
And there are two types of automatic performance data of the second format (format 2). The data string of each format is as follows. It should be noted that the following format is not used in a real electronic musical instrument, but is a virtual one.

Format 1: aa, CH, bb, Eff-type, Param-byte, Param ... Format 2: cc, CH, Eff-type (MSB), Eff-type (LSB), Param-byte, Param ... (2) where CH is the channel number to which the effect is added, Eff-type
Is the type of effect, Param is a parameter (variable length) specified for each effect, Param-byte is the number of bytes of the variable length parameter, and aa, bb, cc are constants.

In order to convert the automatic performance data of format 1 into the automatic performance data of format 2, the following conversion rule is described in the conversion rule file in text format in accordance with the format of the above expression (1). do it. REG1, RE
G2 is a register. Registers can be used when the data is a variable. The same register shows the same variable.

Data1 = 6, aa, REG1, bb, 1, 1, REG2, 0, 6, cc, REG1, 0, 1, 1, REG2: Rev Tbl (3) Data string of format 1 data1. .. is "aa, REG1 (= CH), bb, 1
(= Eff-type), 1 (= Param-byte), REG2 (= Param) ", and the length length1 of the data string data1 ... is 6 bytes.

The data string data2 ... of format 2 is "cc, REG1
(= CH), 0 (= Eff-type (MSB)), 1 (= Eff-type (LSB)), 1 (= Pa
ram-byte), REG2: RevTbl (= Param) ", and the data string da
The length length2 of ta2 ... is 6 bytes.

Expression (3) shows the conversion rule when reverb is specified as the effect type. Reverb is expressed as Eff-type = 1 in format 1 and Eff-type (MSB) = in format 2.
Expressed as 0, Eff-type (LSB) = 1.

Since it is not efficient to create a conversion rule for each value of the reverb parameter Param ..., conversion is performed using the register REG2 with Param ... as a variable. In most cases the parameters Param ...
It can be handled by converting the numerical value. Here, the format 1 parameters (for example, reverb level) are converted into the conversion table.
Converted to format 2 parameters by RevTbl.
The notation of REG2: RevTbl uses the value of REG2 as an index.
Refers to the RevTbl table.

In equation (3), type = 0. This means unconditionally converting from format 1 to format 2.

If type = 1, the data string of format 1
When the conversion from data1 to the data string data2 of format 2 cannot be performed normally, the data string data1 of format 1 can be converted to another data string data3.

For example, the number of parts that can be logically handled may differ between the two automatic performance data. If both parts have the same number of parts, conversion can be performed without problems. However, when the number of parts is different, some parts cannot be assigned. In that case,
The parts that have not been assigned can be converted to embed special data (error code) that does not affect the performance so that the location can be specified. The user can find and edit the location by searching the special data using a computer or a sequencer.

As described above, by writing the conversion rule 4b in a simple language in the text format, the conversion table 4
A data string that is difficult or impossible to convert only by c can be converted. Conversion table 4c
By creating the conversion rule 4b and the conversion rule 4b, complicated conversion can be performed.

For example, in order to convert the tone color number, since only the numerical value is converted without changing the code system, the conversion can be performed using the conversion table 4c. on the other hand,
Since conversion of effect data and the like requires conversion of the code system, conversion is performed using the conversion rule 4b. The conversion of effect data and the like is complicated and cannot be converted only by the conversion table 4c. If the conversion rule 4b is used, it is possible to convert effect data and the like.

In the conversion rule 4b, the register REG
By using 1, REG2 or table RevTbl, conversion rules can be efficiently described.

FIG. 3 is a diagram showing a hardware configuration for realizing the automatic performance data conversion system according to this embodiment.

The bus 16, CPU 11, ROM 12,
RAM13, floppy disk drive (FDD) 1
4, hard disk drive (HDD) 15, operator 1
7 and the display 18 are connected.

The floppy disk drive 14 or the hard disk drive 15 stores the conversion source automatic performance data and the converted automatic performance data. If both automatic performance data are stored in the floppy, they can be used in the electronic musical instruments 1 and 7 shown in FIG.

The display 18 can display a file of the automatic performance data stored in the floppy disk drive 14 or the hard disk drive 15 as a list. The user can select from the list of files
A file for which data conversion is desired can be selected using the manipulator 17. Then, the operator 17 sets the format (standard) of the converted automatic performance data to be converted.
Can be used to select or enter.

The ROM 12 stores computer programs and various parameters. CPU11 is R
According to the computer program stored in the OM 12, processing such as control of the floppy disk drive 14 or data conversion is performed. The RAM 13 has a working area for the CPU 11 including registers, flags, and buffers.

The conversion rule file 4 includes a floppy disk drive 14, a hard disk drive 15, and a ROM.
12 or stored in the RAM 13. In order to perform data conversion processing at high speed, the conversion rule file 4 is
13 or ROM 12 is preferably stored. However, when rewriting the conversion rule, it is preferable to store the conversion rule in the RAM 13.

To store the conversion rules for a long time, the floppy disk drive 14 or the hard disk drive 1
The conversion rule is stored in 5, and RAM 13 is used only when converting data.
You can transfer the data to.

The HDD 15 is a storage device for storing various data such as operation programs, automatic performance data, and conversion rule files. If the operation program is not stored in the ROM 12, the operation program is stored in the hard disk in the HDD 15, and the operation program is stored in the RAM 13
The CPU 11 can be caused to perform an operation similar to that when the operation program is stored in the ROM 12 by reading it into the CPU 11. By doing so, it is possible to easily add an operation program or upgrade the version. CD-ROM
The (compact disc-read only memory) drive 21 is a device for reading out an operation program and various data stored in the CD-ROM 32. The read operation program and various data are stored in the hard disk in the HDD 15. New installation and version upgrade of the operating program can be done easily. In addition to the CD-ROM drive 21, a device for using various types of media such as a magneto-optical disk (MO) device may be provided as an external storage device.

The communication interface 22 is connected to a communication network 41 such as a LAN (local area network), the Internet or a telephone circuit, and is connected to the server computer 31 via the communication network 41. If the operation program and various data are not stored in the HDD 15, the server computer 31
Used to download programs and data from. The automatic performance data conversion system, which is a client, communicates a command requesting a download of an operation program and data to the server computer 31 via the communication interface 22 and the communication network 41. Upon receiving this command, the server computer 31 distributes the requested operation program and data to the automatic performance data conversion system via the communication network 41, and the automatic performance data conversion system sends these to the automatic performance data conversion system via the communication interface 22. The download is completed by receiving the programs and data and storing them in the HDD 15.

The present embodiment may be carried out by a commercially available personal computer or the like in which an operation program corresponding to the present embodiment and various data are installed. In that case, the operation program and various data corresponding to the present embodiment may be provided to the user while being stored in a storage medium readable by a personal computer such as a CD-ROM or a floppy disk. . When the personal computer or the like is connected to a communication network such as a LAN, the Internet, or a telephone line, the operation program and various data may be provided to the personal computer or the like via the communication network.

FIG. 4 is a flowchart of the main routine of the processing performed by the CPU 11 shown in FIG.

In step S1, the registers, flags, buffers, etc. are initialized. For example, the tone bank number is initially set to 0. Normally, a tone color is designated by a combination of a bank number (bank select) and a program number (program change). However, if the tone color is specified only by the program change without the bank number, it is considered that the bank number is 0. Bank number 0 is
This is a bank showing standard melody tones.

In step S2, a conversion source automatic performance data file (hereinafter referred to as a conversion source file) is designated.
All the automatic performance data files stored in the floppy disk drive or hard disk drive are displayed on the display. The user selects a file to be converted from among the files by the operator.

In step S3, the format of the converted automatic performance data is designated. The format is, for example, GS standard or XG standard. All the formats are displayed on the display unit, and the user can select from among them by the operator. Further, the user may input the format name using the operator.

In step S4, the format of the conversion source automatic performance data is detected. The format is, for example, XG standard or G
S standard. The format of the automatic performance data can be detected by reading a certain event in the automatic performance data and discriminating the format of the event.

For example, at the beginning of the XG standard automatic performance data, a reset signal for the XG standard is included.
A reset signal for the GS standard is included at the beginning of the standard automatic performance data. By discriminating the reset signal, it is possible to discriminate whether the format of the automatic performance data is the XG standard or the GS standard.

In step S5, it is checked whether or not an event in the format converted in the previous step is detected. In the previous step, the conversion source format is detected. If the format of the conversion source is the same as the converted format specified by the user,
If you do not need to convert, or if you force conversion,
It may generate abnormal data.

If the format of the conversion source is the same as the format after the conversion, the process proceeds to step S11, and the fact that the conversion has not been performed is displayed on the display to inform the user (user). Then, the processing of the main routine ends.

On the other hand, if the format of the conversion source is different from the format after the conversion, the data conversion is performed, and thus the process proceeds to step S6.

In step S6, a channel information table is created. Specifically, the automatic performance data is read from the conversion source file and the channel number used is checked. Then, the channel number used in the conversion source automatic performance data is recorded in the channel information table.

In step S7, a file for recording the converted data (hereinafter referred to as a converted file) is newly created. Here, only the header portion is written in the converted file. The automatic performance data is written in the file by the subsequent processing.

In step S8, an event is read (retrieved) from the conversion source file. In step S9, data conversion processing of the read event is performed. Events in the source format are converted to events in the converted format,
Written to file after conversion. Details of this processing will be described later with reference to the flowcharts of FIGS. 5 and 6.

In step S10, it is checked whether or not the conversion is completed for all the events of the automatic performance data of the conversion source. If not completed for all events, the process returns to step S8 and the process for the next event is repeated.

When all the events are completed, the processing of the main routine is completed. All the conversion-source automatic performance data are converted into the converted automatic performance data.

5 and 6 show the step S shown in FIG.
It is a flowchart which shows the detail of the event conversion process of 9.

In the automatic performance data, the tone colors are roughly classified into the following two types. [1] Melody tone [2] Drum tone Also, the events for the above tone are usually arranged in the following order.

(1) Bank select (2) Program change (3) Note event In addition, other information (for example, effect) exists as necessary.

First, the processing for a melody tone color will be described, and then the processing for a drum tone color will be described.

[1] Melody Tone (1) Bank Select A case where a bank select event is read from the conversion source file will be described. When the read event is bank select, the process proceeds to step S62 via steps S21, S41 and S61.

In step S62, the bank number designated by the bank select is stored. Bank number is
It is only stored in the internal register, not recorded in the converted file. Then, the process returns to the main routine process (FIG. 4).

The tone color number is designated by a combination of a bank number (bank select) and a program number (program change). Program numbers are 0 to 127
Up to 128 kinds of tones. If the bank number is changed, there are tones (128 tones) having different program numbers. That is, there are 128 banks of tone colors. Bank numbers are MSB (most significant byte) and LS
It is specified by 2 bytes of B (least significant byte).

(2) Program Change A case where the program change is read from the conversion source file will be described. If the read event is a program change, the process proceeds to step S21 through step S21.
Proceed to 22.

In step S22, it is checked whether the bank number designated by the bank select is a drum bank or a melody bank. The drum bank is a bank containing a drum tone color, and the melody bank is a bank containing a melody tone color. For example, when the bank number MSB is 7F in hexadecimal notation, it is a drum bank. Other than that, it is a melody bank. However,
A certain timbre may belong to a drum bank in automatic play data of a certain format, and may belong to a melody bank in automatic play data of another format.

Here, the case of a melody tone color is shown. In the case of a melody tone, the bank is not a drum bank, so the process proceeds to step S23.

In step S23, the converted bank number and program number are obtained according to the stored bank number (S62) and the program number designated by the program change.

Specifically, the melody tone color conversion table 4
Using d (FIG. 2), the converted bank number and program number are obtained based on the conversion source bank number and program number. The melody tone color conversion table 4d stores both numerical values (bank number and program number) in association with each other.

In step S24, a velocity table corresponding to the tone color is obtained according to the stored bank number (S62) and the designated program number. In the case of a keyboard, the velocity corresponds to the initial touch (key pressing speed), that is, the volume. The velocity table corresponds to a touch curve. Generally, the faster the key pressing speed is, the louder the sound is produced.

The initial touch is based on the touch feeling of the keyboard, and the initial touch (velocity) is different when the keyboard (the manufacturer of the keyboard) is different. Therefore, different formats of the automatic performance data have different velocities.

Therefore, the velocity conversion table 4 for each tone color
Using f (FIG. 2), the velocity after conversion is obtained based on the velocity of the conversion source. Velocity conversion table 4f
Stores the velocities of both tones corresponding to each other.

In step S25, volume information corresponding to the tone color is obtained in accordance with the stored bank number (S62) and the designated program number, and a volume offset event is generated. Unlike the velocity, the volume indicates the overall volume (average volume level). The volume offset event is an event for setting a volume offset value.

With respect to the volume, each assertion is likely to occur depending on the format of the automatic performance data. That is, depending on the format,
The volume is likely to be different. For example, in a sound source of a certain company, when the piano is set to have a larger volume than other tones, the automatic performance data is also created in consideration of it.

Therefore, the tone color-specific volume conversion table 4
g (FIG. 2) is used to obtain the converted volume based on the conversion source volume. Volume conversion table 4g
Stores the volumes of both for each timbre.

Since both velocity and volume are volume information, both may be converted as a unit. However, as mentioned above, since velocity and volume have different properties, it is better to convert them separately.
Easy to edit conversion table.

In step S26, the bank number (bank select), program number (program change), and volume offset information are recorded in the converted file as the same channel information. As a result, the converted tone color information and volume information are written in the converted file. After that, main routine processing (Figure 4)
Return to.

Although the timbre is designated by a combination of the bank number and the program number, it can be designated only by the program number (program change) when the bank number is the same as the previous one. However, the tone color in a bank number in the conversion-source automatic performance data may extend over two or more bank numbers in the converted automatic performance data. In order to respond to that case,
In this step, both bank number and program change are recorded.

The velocity table (S24) is
As will be described later, when the note event is read, it is used to correct the velocity during the note event (S51).

(3) Note event The case where the note event is read from the conversion source file will be described. If the read event is a note event, the steps S21 and S41 are followed by the step S
Proceed to 42.

In step S42, it is checked whether or not the note event channel is the drum assign channel. That is, it is checked whether or not the channel to which the note event is assigned is set to the drum tone color. Specifically, in step S32 described later, a list of drum assign channels is created as a table, and by referring to the table, it is checked whether or not the drum assign channel.

Here, the case of a melody tone color is shown. In the case of a melody tone, the channel is not the drum assign channel, so the flow proceeds to step S51.

In step S51, the velocity in the note event is corrected and changed by the velocity table obtained in step S24, and the note event including the changed velocity is recorded in the converted file.

The velocity table is obtained in step S24 as a table corresponding to the timbre. Note events include velocity. The velocity in the note event is converted according to the velocity table, and the note event including the converted velocity is recorded in the converted file. Then, the process returns to the main routine process (FIG. 4).

(4) Others (for example, effect addition) The other events are, for example, effect addition events. The effect-adding event is represented by, for example, the data string shown in the above equation (2). Then, the conversion from the format 1 to the format 2 can be performed by the conversion rule shown in the expression (3).

The case where other events are read from the conversion source file will be described. If the read event is another event, steps S21, S41, S
Via 61, the process proceeds to step S71.

In step S71, the data string of the read (received) event is compared with the data1 part of each conversion rule. The conversion rule 4b is stored in the conversion rule file 4 shown in FIG. The conversion rule is described in the format shown in the above expression (1). Data1 in Expression (1) is the data string of the conversion source. The conversion rule file 4 contains one or more conversion rules 4b.
Is stored, it is compared with the data1 part of each conversion rule to find the corresponding conversion rule.

In step S72, it is checked whether or not there is a conversion rule in which the data1 part matches. If there is no matching conversion rule, the process proceeds to step S81 to return to the process of the main routine (FIG. 4) without ignoring or converting the read event. When there is no matching conversion rule, conversion may or may not be specified.

On the other hand, if there is a matching conversion rule, the conversion is performed in accordance with the conversion rule, so that step S73 is performed.
Go to.

At step S73, the data string data1 is set to ty.
Replace with data column data2 or data3 based on pe,
Record in the converted file. For example, based on the conversion rule shown in Expression (3), the conversion from the format 1 to the format 2 shown in Expression (2) is performed and recorded in the converted file. Then, the process returns to the main routine process (FIG. 4).

In the conversion rule, as shown in equation (3), the registers REG1, REG2 or the table RevTbl are used.
Can be used to refer to variables and arrays and efficiently perform conversion.

The processing of the melody tone color has been described above.
Next, the drum tone color processing will be described.

[2] Drum Tone (1) Bank Select Bank select is the same as the above melody tone color processing.

Unlike the melody tone color, the drum tone color is a tone color that does not require pitch designation. For example, the bass drum produces only a single pitch and does not specify the pitch. Therefore, the method of designating the tone color of the drum tone differs from that of the melody tone.

The melody tone color is designated by the bank number (bank select) and the program number (program change), and the pitch is designated by the note number in the note event. In the case of a drum tone, a bank set and a program number specify a drum set, and a note number in a note event specifies a part in the drum set. The drum tone color is substantially designated by the bank number, program number and note number.

(2) Program Change The case where the program change is read from the conversion source file will be described. If the read event is a program change, the process proceeds to step S21 through step S21.
Proceed to 22.

In step S22, it is checked whether or not the bank number designated by the bank select is a drum bank. Here, the case of a drum tone will be described. If it is a drum tone, the process proceeds to step S31.

In step S31, the program number corresponding to the read program change is stored in the internal register. The program number is stored in the internal register and is not written in the converted file. The program number is written in the converted file when the note event is read out later (S45).

In step S32, step S6 in FIG.
With reference to the channel information table created in step 2, the drum tone color channels are divided, a plurality of divided channels are secured, and a correspondence table of program numbers and channel numbers is created.

The channel information table is a table storing the channel numbers used in the conversion source file. The correspondence table of the program numbers and the channel numbers is used when determining whether the target channel is the drum tone color channel or the melody tone color channel in step S42.

In the conversion source file, one channel is secured corresponding to one program change (program number), but in the converted file, a plurality of channels may be secured corresponding to it. The reason will be explained.

In the case of the drum tone color, the drum set is designated by the bank number and the program number. Once a drum set is specified, it is rare to change the drum set thereafter. After specifying the drum set, select the drum part by changing the note number.

However, even though all parts are included in a certain drum set in the conversion source format, those parts are included in a plurality of drum sets in the converted format. There are cases. In that case,
A method of changing the drum set each time a part changes can be considered, but when the drum set is changed, the sound of the currently set drum set may be changed midway. Desirably, even if the drum set is changed, the sound being generated continues to sound the sound of the previous drum set.

In order to solve the above-mentioned problems, when one drum set is designated in the conversion source format, it corresponds in the converted format, and a plurality of drum sets for pronouncing a plurality of drum sets can be provided if necessary. To secure a channel. However, if the conversion source format drum set includes both the drum tone and the melody tone in the converted format, it is necessary to secure a plurality of channels for producing the drum set and the melody tone.

If the format of the conversion source and the format after conversion are known, if a certain drum set is designated, the minimum number of channels to be secured can be known in advance. For example, if a drum set in the format of the conversion source is specified, 4
Since six drum sets and two melody tones are pronounced, it is sufficient to secure six channels. This means that the parts included in the conversion-source drum set are spread over six tone color sets after conversion. In other words, the conversion source channel information is divided into a plurality of pieces of channel information, and the converted channel information is created.

In step S33, if the required number of channels could not be secured because the number of channels was insufficient in the previous step, information on the channels that could not be secured is recorded in the correspondence table. Later, when a note event using the channel is read, it can be written in the converted file including a code indicating that the note cannot be sounded. Although the note event of the channel cannot be pronounced, it can be dealt with as desired by editing it with a sequencer or a computer. After recording the above correspondence table, the process returns to the process of the main routine (FIG. 4).

(3) Note event The case where the note event is read from the conversion source file will be described. If the read event is a note event, the steps S21 and S41 are followed by the step S
Proceed to 42.

In step S42, it is checked whether or not the note event channel is the drum assign channel. Whether it is a drum assign channel or not is determined based on the table created in step S32. Here, the case of a drum tone will be described. In the case of the drum tone color, the channel is the drum assign channel, so the flow proceeds to step S43.

In step S43, the bank number and program number after conversion are stored according to the stored bank number (S62), program number (S31), and note number (note number) in the specified note event. ,
Get the note number.

Specifically, the rhythm tone color conversion table 4e
(FIG. 2) is used to obtain the converted bank number, program number, and note number.

In step S44, a velocity table corresponding to the tone color is created according to the stored bank number (S62), program number (S31), and note number (note number) in the specified note event. obtain. Specifically, velocity-specific velocity conversion table 4f
(FIG. 2) is used to obtain the converted velocity table.

In step S45, the correspondence table (table created in S33) is referred to based on the converted program change (program number) to check whether or not the channel can be assigned. If assignment is possible, the converted bank number, program number, note number, and converted velocity are recorded in the converted file as the information of that channel.

In the correspondence table, information of channels that cannot be secured when dividing the drum tone color channels is recorded. By referring to the correspondence table, it can be determined whether or not the channel can be assigned. If the channel can be assigned, the converted bank number, program number, etc. are recorded, and then the process returns to the main routine (FIG. 4).

In the case of drum timbre, the bank number and the program number specify the drum set, and the note number specifies the part in the drum set.

(4) Others (for example, effect addition) Other events are the same as the above melody tone color processing. It should be noted that referring to the correspondence table created in step S32, if an effect is imparted to a channel to which a drum tone color is assigned by pitch bend or the like, the effect is imparted to all the channels divided for the drum tone color.

According to this embodiment, not only the melody tone color but also the drum tone color can be converted into the automatic performance data. If the conversion table is used, data conversion such as numerical conversion can be performed. For example, timbre and velocity. Furthermore, by using the conversion rule, desired conversion can be performed even if conversion is impossible or difficult with the conversion table. Since the user can describe the conversion rule in a simple language in the text format, the rule can be easily created.

The user or maker can create or change the conversion rule or the conversion table. Since the user or the maker can freely create or change the rules, the rules for converting the automatic performance data can be easily defined, and the degree of freedom in converting the automatic performance data is expanded.

Also, the effect-added data included in the automatic performance data can be converted into a different format. Even if the conversion source and the converted automatic performance data are not compatible with each other, the effect data can be converted into the appropriate effect data. If the automatic performance data including the converted effect-applying data is supplied to the effect-applying device, an appropriate effect is applied to the musical tone signal.

Further, although one channel information is sufficient for the automatic performance data of the conversion source such as the drum timbre, a plurality of channel information may be required for the converted automatic performance data. In that case, one channel information in the conversion source automatic performance data is divided into a plurality of channel information to generate the converted automatic performance data. By dividing the channel information into a plurality of pieces of channel information, proper automatic performance can be performed even after conversion of the automatic performance data. Proper pronunciation is possible regardless of whether it is a melody tone or a drum tone.

The automatic performance data conversion system according to this embodiment can convert automatic performance data used in a karaoke apparatus, automatic performance data used in an electronic musical instrument, automatic performance data consisting only of MIDI data, and the like.

When performing conversion, it is not necessary to describe all conversion rules or tables. Default conversion is performed for a certain category unless otherwise specified, and conversion rules or tables are specified only when specified. You may make it convert by a table.

For example, when there is no conversion rule or table for each program change, the velocity table may be converted using a representative conversion rule or table.

The conversion of automatic performance data may be performed by a computer or may be performed inside a conventional electronic musical instrument.

Further, the automatic performance data before and after the conversion may be input or output to the automatic performance data conversion system as electronic data via a network without being recorded on a floppy disk or the like.

The present invention has been described above with reference to the embodiments.
The present invention is not limited to these. For example, it will be apparent to those skilled in the art that various modifications, improvements, combinations, and the like can be made.

[0142]

As described above, according to the present invention,
Since the user or the maker can freely create or change the conversion rule, the degree of freedom in converting the automatic performance data is expanded. Further, if the automatic performance data is converted according to the rule, not only the conversion of numerical values but also the complicated conversion such as rearranging the data string of the automatic performance data can be performed.

Further, even if the value of the data for effect addition is different between the automatic performance data of the first format and the automatic performance data of the second format, it can be converted into the data of appropriate effect application. In the effect imparting device, an appropriate effect can be imparted to the tone signal based on the converted effect imparting data.

Further, by dividing one channel information in the first-format automatic performance data into a plurality of channel information and generating the second-format automatic performance data, the second-format automatic performance data is generated. Also enables proper automatic performance.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing an overall configuration of an automatic performance data conversion system according to an embodiment of the present invention.

FIG. 2 is a diagram showing the contents of a conversion rule file shown in FIG.

FIG. 3 is a diagram showing a hardware configuration for realizing an automatic performance data conversion system according to the present embodiment.

FIG. 4 is a flowchart of a main routine of a process performed by the CPU shown in FIG.

5 is a flowchart showing details of event conversion processing in step S9 shown in FIG.

FIG. 6 is a flowchart following the processing of FIG.

[Explanation of symbols] 1,7 Electronic musical instrument, 2,6 Automatic performance data,
3 computers, 4 conversion rule files, 4a
Header, 4b conversion rule, 4c conversion table, 5 conversion processing unit, 11 CPU, 1
2 ROM, 13 RAM, 14 FDD,
15 HDD, 16 bus, 17 controls,
18 display, 21 CD-ROM drive, 22
Communication interface, 31 server computer, 32 CD-ROM, 41 communication network

Continuation of the front page (56) Reference JP-A-5-188941 (JP, A) JP-A-6-195883 (JP, A) JP-A-7-140977 (JP, A) JP-A-4-249298 (JP , A) JP-A-8-87271 (JP, A) JP-A-60-24591 (JP, A) JP-A-5-216471 (JP, A) Actually open 4-86281 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G10H 1/00-7/12

Claims (3)

(57) [Claims] 1. The automatic performance data of the first format having tone color information including a plurality of tone colors in one tone color set is converted into the second format having tone color information in which the plurality of tone colors are included in the plurality of tone color sets. An automatic performance data conversion system for converting to automatic performance data, comprising input means for inputting automatic performance data of a first format, and tone color information included in the automatic performance data of the first format input by said input means. And a data conversion means for converting into a second format timbre information, and also converting into a second format automatic performance data in which channel information is organized for each timbre set of the second format after conversion. An automatic performance data conversion system having an output means for outputting the data string of the second format converted by the above as converted automatic performance data. 2. The automatic performance data of a first format having tone color information including a plurality of tone colors in one tone color set, and the second type having tone color information in which the plurality of types of tone colors are included in the plurality of tone color sets. An automatic performance data conversion method for converting into automatic performance data, comprising: (a) an input step of inputting automatic performance data of a first format; and (b) an automatic performance of a first format input by the input step. A data conversion step of converting tone color information included in the data into tone color information of the second format, and also converting into second performance automatic performance data in which channel information is organized for each tone color set of the second format after conversion. And (c) an output step of outputting the data string of the second format converted by the data conversion step as converted automatic performance data, the automatic performance data conversion method. 3. The automatic performance data of the first format having tone color information including a plurality of tone colors in one tone color set is converted into the second type having tone color information in which the plurality of tone colors are included in the plurality of tone color sets. An automatic performance data conversion method for converting into automatic performance data, comprising: (a) an input procedure for inputting automatic performance data of a first format; and (b) an automatic performance of a first format input by the input procedure. A data conversion procedure for converting the tone color information included in the data into the second format tone color information, and also converting the tone color information into the second format automatic performance data in which the channel information is organized for each tone format set of the second format after conversion. And (c) an automatic performance data conversion for causing a computer to execute the output procedure of outputting the data string of the second format converted by the data conversion procedure as the converted automatic performance data. A computer-readable recording medium recording a replacement program.