JPH04110895A - Musical sound data processing system - Google Patents

Abstract

PURPOSE:To make individual data lengths short by outputting characteristic part data, extracted by a characteristic extracting means, as many as musical sound data, and outputting common part data, extracted by a common extracting means, by less than the musical sound data. CONSTITUTION:As shown in figures (1), (2), and (3), respective data in sound generation data which are characteristic part data are compressed, and expanded according to mode data shown in a figure (4) to obtain original velocity data, key number data, step-time data, and gate time data. The mode data is stored only in places of the sound generation data. Consequently, the respective musical sound data can be compressed into up to characteristic part data and the individual data length is made short. Further, the common part data are less in number than the musical sound data, so the total amount of a musical sound group can be decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a musical tone data processing method, and particularly to an improvement in reducing the data length of musical tone data.

[Summary of the Invention] The present invention extracts common part data common to each musical tone data and unique part data other than the common part from each musical tone, sets the unique part data to the same number as musical tone data, and extracts the common part data. The number of pieces of data was smaller than the musical tone data. Thereby, the data length of musical tone data can be shortened.

[Prior Art] Typical musical tone data includes a key number, gate time, herocity, and step time, as shown in FIG. Taking the key number as an example, conventionally, for example, the data length of the key number data is 7 bits, and the 3-digit hits are used as octave data to indicate the 7 octaves, and the lower 4 hits are set as octave data. was used as pitch name data to indicate 12 pitch names, making it possible to represent up to 84 famous pitches.

[Invention or Problem to be Solved] However, in actual performances, fairly high notes and fairly low notes are not often played, but are often played in the middle range of 2 to 3 octaves. Constantly using a key number with a data length of 7 bits was often wasteful.

Also, with chord accompaniment, compared to melody performance,
There was no significant change in the speed or strength of the key presses, and it was wasteful to use an 8-bit length for velocity data.

Also, in court performance, compared to melody performance, there is less need for detailed expressions in note length and performance timing, and the precision of gate time and step time can be coarse.

Furthermore, in rhythm performance, compared to melody performance, since the percussion sound is used, the gate time is uniform, and gate time data is not required. On the other hand, it requires more precise step time and velocity than melody playing.

In this way, the data format shown in FIG. 13 is suitable for melody performance, and some parts are wasted or insufficient for other chord accompaniment and rhythm performance.

The present invention has been made in order to solve the above-mentioned problems, and it reduces the data length of each piece of musical tone data, reduces the amount of data as a whole group of musical tone data, and also reduces the data length of each piece of musical tone data. It is an object of the present invention to provide a musical tone data processing method that can perform data processing without waste even in data processing of musical performance parts.

[Means for Solving the Problem] In order to achieve the above object, in the present invention, common part data common to each musical tone data and unique part data other than the common part are extracted from each musical tone, and unique part data is extracted from each musical tone. The number of partial data is the same as the number of musical tone data, and the number of common partial data is less than the number of musical tone data.

[Operation] As a result, each tone data can be compressed into unique partial data, and the length of each piece of data can be shortened.

Furthermore, since the number of common portion data is smaller than the number of musical tone data, the amount of data for the entire musical tone data group can also be reduced.

[Example] Hereinafter, an example embodying the present invention will be described with reference to the drawings.

As shown in FIG. 1 (1), (2), and (3), the present invention compresses each data in pronunciation data that is unique partial data,
Each of these data is expanded based on the mode data shown in FIG. 1 (4) to become the original herocity data, key number data, step time data, and gate time data.

This mode data is only stored in place of the sound production data, as shown in FIGS. 3(1), (2), and (3).

The above data is expanded at step 404.40 in FIG.
6.408.412.4] 5.420, and then written into the assignment memory 8 and sounded. Further, the compressed storage of the data is performed in steps 508 to 514 in FIG. 12 for key number data, and in steps 517 to 51 in FIG. 12 for veronti data.
8 and 520-525 and 513-5]4 is performed.

1. Overall circuit Figure 2 shows the overall circuit of the electronic musical instrument. Each key on the keyboard is scanned by a key scan circuit 2 to detect whether it is key-on or key-off. This detection result is written into the assignment memory 8 in the tone generation circuit 7 by the CPU 6. The assignment memory 8 may be configured integrally with the RA Mll.

Each switch of the tablet switch matrix 3 is used to select the tone, rhythm, etc. of the keyboard 1, and each switch is scanned by the tablet scan circuit 4. The scan result, that is, data regarding the selected tone, rhythm, etc., is sent to the tone generation circuit 7 by the CPU 6.

Note that the keyboard 1 may be replaced by an electronic stringed instrument such as an electronic guitar, an electronic wind (wind) instrument, an electronic percussion instrument, etc., and may also be used to instruct the production of musical tones.

The musical tone generation circuit 7 generates a musical tone signal corresponding to the various data sent and the data set in the assignment memory 8, and sends it to the sound system 10 via the D/A converter 9. A musical sound is produced or pronounced. ROMl
2 stores programs for the CPU 6 to perform various processes, performance information, velocity lists, step lists, catto lists, court route lists, tone lists, and in some cases musical waveform data and envelope waveform data. There is. In addition to performance information, change data such as various processing data whose values change are stored in the working RAM 1.1.RA~111. a is also formed.

The programmable timer 5 is composed of a programmable counter and the like, and outputs an included signal INT having a period corresponding to the input data to the CPU 6. This programmable timer 5 counts according to the set tempo, that is, counts 48 clocks per quarter note time length, and is used for counting step time data, gate time data, etc., which will be described later.

2. Performance information FIG. 3 is stored in RAM II and ROM 12. This shows the storage format of performance information. Third
FIG. 3 (1) is melody performance information, FIG. 3 (2) is chord performance information, and FIG. 3 (3) is rhythm performance information.

Each musical tone data in the performance information has a two-hide configuration, and each musical tone data indicates measure data, mode data, timbre data, sound data, end data, etc.

Among these, the pronunciation data has different structures for melody, chord, and rhythm, as shown in FIG. 1 (1) to (3).

2-1. Melody pronunciation data The melody pronunciation data shown in Figure 1 (1) consists of 3-bit accent data, 5-bit note number data,
It consists of 4-bit step data and 4-bit gate time data.

Accent data is data indicating the speed or strength of key depression. Since this data is 3 bits, "O" ~
Although it can only take the value "7", the herocity list data r00 (0)J in the mote data described later
rol (],)J r]0(2)J rl
1 (3) Extend conversion to a wider range of values based on J.

This expansion is possible as shown in Figure 4 (1) to (4), and based on these four velocity lists, "0" to "7"
” accent data, “0” ~ “64”, “0” ~
"88", "34" ~ "127", "68" ~ r127
Each is converted and synthesized with the original heronti data of J. In this case, the accent data shown in FIGS. 4(1) to (4) are "0" to "15", and the accent data is actually doubled or doubled+co. The data of this Helosite Nost is stored in the ROM 12 mentioned above.

Herocity list data r00 (0) J rol (
],) J rl, 0 (2) J rl, 1
(3) J is synonymous with fluctuation rate data indicating the range of fluctuation of velocity data, and accent data "0" to
"15" is synonymous with deviation rate data indicating the position within the above fluctuation range.

The herocity list, which is not shown in FIGS. 4(1) to (4), may be in other data formats. Also, Velocityris!・
Data may be substituted with an arithmetic expression.

For example, for the Heronti list in Figure 4 (1), 4
× (accent data + 1) (however, when accent data is O, Ronti data is ○), and Fig. 4 (3)
The heronti list is 6×(accent data) +34 <However, when the accent data is 15, the heronti data is 127).

The note number 1<data is data indicating the pitch. Since this data is 5 bits, it can only take values from [Oj to "3]".
It becomes possible to take a wider range of values. The note number/< data indicates a key number 1 with a range of just over two octaves, and the node bias data indicates a range of half an octave 11.
This is data indicating the value of the key number, and the two-tone one-earth data is multiplied by six and the note number data is added to add and synthesize the original key number data.

Note bias data is ro O00J and Co1r0
010Jtec, rolooJteC1 "01, 1 o
jteC, rlooojteC, rlo10''teC, rl
looJteC, rl, 1. ], CM shows C7. The two-tone first ear data is played by Hess,
The pitch of C2 is sufficient, the pitch of C3 is sufficient for chord accompaniment, and the pitch of melody note is sufficient for melody performance.
Each time it exceeds the two-octave range that the Notenareno 1 data can take, it is changed to C1C4, C5, and so on.

This note bias data may indicate the value of the first octave η. The note bias data is data that has a constant value with respect to the variation range of the key number data, and the note number data is synonymous with deviation data obtained by subtracting the bias data from the key number data.

The step level data is data indicating the length of time from the beginning of a measure to the timing of sound generation. The gate level data is data indicating the tone length (note length) of a musical tone. Since these data are 4 bits, they are "0" to "15".
Is it possible to take only the values of ? Figure 4 (5) (6) (
7) is expanded based on the step list and gate list, and converted and synthesized into original step time data and gate time data.

In this step level data and Kate level data, unlike the velocity data and key number data mentioned above, the conversion range is not changed based on the data in the mote data and is fixed. In this case, the steering knob level list and gate level data are also stored in the ROM 12. Two types of step level lists are stored as shown in FIG. 4 (5) and (6). FIG. 4 (5) is for melody tones, and FIG. 4 (6) is for chord tones. Whether rhythm sounds are also stored in the ROM 12 is not shown.

Note that this step time data and Kate time data may also be made selectable from a list like velocity, or may be separated into noise data and other data.

2-2. Chord Pronunciation Data The chord pronunciation data shown in FIG. 1(2) consists of 4-bit chord data, 4-bit root data, 4-bit step help data, and key level data.

Based on the court data, the note number of each constituent note is read from the court route list in the ROM 1.2, and expanded according to the root data. This court route list is widely used in automatic accompaniment devices and the like. The note number of each expanded component note has the same data format as the note number of the melody pronunciation data described above, and as described above, the note number of each component note is determined by the original key based on the note bias data in the mode data. It is added and combined with the number data. Of course, the original key number data may be converted directly from the code route list.

The skip level data and the Kate level data are the same as the melody sound data described above.

In this chord pronunciation data, velocity data is not stored, but constant velocity data is written into the assignment memory 8 by the CPU 6 at the time of pronunciation.

2-3. Rhythm pronunciation data The rhythm pronunciation data shown in Figure 1 (3) consists of 2-hint accent data, 6-bit percussion number data,
It is extracted from 5 bits of step level data and 3 bits of accent data.

The accent data is 5 bits, including 2 bits and 3 bits, and is converted into finer and more viscous velocity data by conversion C7.

The velocity list data of this rhythm pronunciation data is either not shown or, like the melody pronunciation data, there are four heronty lists as shown in Figures (1) to (4) of FF14, or RO.
It is stored in M1.2 and converted into 5-bit accent data of "0" to "31".

Percussion number data is data indicating the tones of drums, hats, cymbals, etc. in rhythm performance.

The sounding frequency of this rhythm timbre tone is based on only the note high 1st data in the mote data.

For example, it indicates the note bias data plus the key number data of 03, or the read frequency.

Since the step level data is 5 bits, finer and more accurate step time data is synthesized and output. The step list for this rhythm pronunciation data is not shown, or it is similar to the melody pronunciation data and chord pronunciation data.
A step list similar to Fig. 4 (5) and (6) is stored in ROM1.
2 and is converted into step level data of 5 bits "0" to "31".

In this rhythm sounding data, gate level data is not stored, and when sounding, constant gate time data is used as the CP.
It is written into the assignment memory 8 by U6.

Since the musical tone data has a 2-byte structure in this way, it only requires half of the conventional 4-byte structure shown in FIG.

2-4. mode data FIG. 1(4) shows mode data.

This mote data is used when the velocity list data used to convert and synthesize the accent data described above changes during the performance, or when the note bias data that is added and synthesized with the note number data changes during the performance.
This is inserted into the performance information. This mote data also has a two-hide configuration, and the first hide is r], 1.
], 1 1.101 j, and the second hide consists of a 2-bit mode code, 2-bit velocity list data, and 4-bit no-I/bias data.

The mode code is the performance information after this mote data, or whether it is a melody performance (roO(0)J) or a chord performance (roll, )J) or a rhythm performance (rl).
O(2)j). As described above, the velocity list data indicates which list, as shown in FIG. 4 (1) to (4), is to be used when outputting the composite velocity data. The note bias data indicates the data that is added to the note number data, as described above, in the composite output of the key number data. In the case of rhythm performance, the second note bias data or directly indicates the sound frequency.

This mote data will not be inserted into the performance information unless it is changed to heronti list data, which is used to convert and synthesize accent data of pronunciation data, or note bias data, which is added and synthesized with note number data. , the number of pronunciation data may be smaller than the number of pronunciation data. Therefore, it is no longer necessary to individually store mode data for each sound generation data, and the amount of data for the performance information as a whole can be reduced.

2-5 Other performance information Figure 1 (5) shows performance end data, which indicates the end of the performance. This end data is also 2
It has a hide configuration, and the first and second hides are r 1
], 1], 1.1], IJ identification code.

FIG. 1 (6) shows measure data, and this data indicates the starting point τ, +heaven of the measure in the l-tora performance. The second measure data also has a 2-hide structure, ]hide[
” or r 1 ], 11 1111. The identification information for J is 2 Hyde [ ] or the reference clock number data. This reference clock number data indicates the number of language clocks within one measure. For example, if the length is a quarter note or the number of clocks is 48, and the length is 4/4, then the number of clocks is 48X4 = 192, and if it is in 3/4 time, the number of clocks is 48X3 = 144.

FIG. 1 (7) shows timbre data, and this data shows the timbre of the performance musical sound. This tone data is also 2
Hyde configuration, 1st hide or rl, 111 111
It has an identification code of 0j, and is the second hide or tone color number data indicating the tone.

3. Examples of Musical Sound Data Figures 5 (1), (2), and (3) show examples of melody performances, chord performances, and rhythm performances that are stored as performance information. If this is stored in the form of performance information, Figure 3 (
1) It becomes as shown in (2) and (3). On the other hand, in the conventional storage method, the data is as shown in FIG. 14 (1), (2), and (3).

In this way, one pronunciation data requires 2 bytes instead of 4 in the past, so compared to the conventional storage method shown in FIG. 14, the storage method of the present invention shown in FIG. The quantity will be less. Note that in the present application, 2-hide mote data is separately required, or the amount of sound data is not required, so the amount of data for the entire performance information is reduced.

4 working RAM1], a FIG. 6 shows working RAM11. ．． It shows a. This working RAM 1.1a is provided with an address pointer, a bar counter, a clock counter, a mote register, a clock register, a tone number register, a step time register, a herocity register, and a sound register.

The address pointer is set to the performance information read address in the ROtvi 12 or the performance information write address in the RAM 11.

The bar counter counts the number of bars of the read performance information or the written performance information.

The clock counter is incremented by 1 when the interwoven signal INT is output from the programmable timer 5, counts for one bar, and is cleared when it matches the value of the clock register, which will be described later.

In the moat register, the second moat code of the above-mentioned mote data, herocity list data, and note bias data are set.

The reference clock number data for the first measure of the second hide of the above-mentioned measure data is set in the clock register.

The second tone color number data of the tone color data mentioned above is set in the tone number register.

Step time data obtained by converting and synthesizing the step level data of the sound generation data is set in the step time register.

When writing performance information, the manual velocity data to be stored is set in the Herontirensuta.

In the sound generation register, input sound data to be stored is set when performance information is written, and reading sound data to be reproduced is set when performance information is read 17.

5. Assignment memory 8 FIG. 7 shows the assignment memory 8.

This assignment memory 8 is formed in the tone generation circuit 7. Musical tone data assigned to each of a plurality of channels is stored. Each channel area contains on/off data, key number data, gate time data,
Heronty data and tone number data are stored.

The on/off data indicates whether the assigned musical tone is in a key-on state (rl, J) or in a key-off state (“0”).

The key number data indicates the key number data of the assigned musical tone, and this data is added and synthesized from the note number data of the above-mentioned sound generation data and the note bias data of the mote data.

The heronti data indicates the key-on speed or strength of the assigned musical tone, and this data is converted and synthesized from the accent data of the above-mentioned pronunciation data and the heronti list data of the mode data.

The timbre number data indicates the timbre of the assigned musical tone, and this data is used directly as the timbre number data of the timbre data in the performance information described above.

6. Performance information reproduction processing FIGS. 8 to 10 show flowcharts of performance information reproduction processing. FIG. 8 shows playback start processing, which is started by turning on the playback start switch in the tablet switch matrix B described above, FIG. 9 shows interactive processing during playback, and FIG. 10 shows playback end processing. This process is started by turning off the playback stop key.

6-1. Reproduction start processing The reproduction start processing shown in FIG. 8 is the on-event processing of the reproduction start switch among the scanning processing of each switch in the tablet switch matrix 3 and the switch event processing.

In this process, when the CPU 6 determines that the playback start switch is turned on (step 100),
The measure counter and clock counter in the working RAM 11a are cleared, and an address pointer is set (step 10). This address pointer has ROM12
The start address data of one of the melody, chord, and rhythm songs in the performance information in [or RAM]] is set.

Next, 2 bytes of data are read from this starting address. Since the data for two hides from the first address is measure data, as shown in Figure 3 (1) to (3),
Of the 2 hides of data read out, 1 of the 2nd hide
Working RAM 11 stores quasi-clock count data for each measure.
-Set in the clock register of a (step) o2
).

Then, data for the next two hides is read out.

The data for the next two hides after the measure data is shown in Figure 3 (1).
As shown in ~(3), since it is mode data, the second byte of the read data for 2 hides, the mort code, herontile list data, and note bias data are stored in the working RAM], ], a. Set in the remote register (step 103).

Next, if the mode code is rOJ or "1", that is, the read data is melody or chord performance information (step o4), data for the next two hides is further read out. The next 2 bytes of data after the mote data are timbre data, as shown in Figure 3 (1) and (2), but 2 out of the read 2 high 1-6j data.
Working RA of high l-[-1 tone number data
Set the tone of M]]a to Nanhare/Star (step 105).

The process of step]05 is not performed for the rhythm performance information since there is no timbre data.

Furthermore, data for the next two hides is read out. Since this data is sound generation data as shown in FIG. 3 (1) to (3), this sound generation data is set in the sound generation register (step 106).

The step level data in the pronunciation data is shown in Figure 4 (5).
Or perform conversion synthesis based on the step list in RO~112 shown in (6), and convert the working RAM 1 ]
, a (step 107).

Finally, the programmable timer 5 is enabled and an interlaced signal can be output to the CPU 6 at regular intervals (step 108), and the process returns. This constant cycle is 48 cycles per quarter note time length.

6-2. Interwoven Processing During Reproduction The interwoven processing during reproduction shown in FIG. 9 is executed when an interwoven signal is input from the programmable timer 5 to the CPU 6.

In this process, the CPU 6 first stores the working RAM 11
Increase the clock counter of a by 1 (step 200), and if the value of the clock counter reaches the reference clock number data for one measure in the clock register (step 20
1. ), the bar counter is incremented by 1 and the clock counter is cleared (step 202). If the value of the clock counter or the reference clock number data for one measure in the clock register has not reached (step 201), if the value of the clock counter or the step time data in the step time register has reached (step 201), step 203),
The generation of musical tones corresponding to the tone generation data related to this step time data is started (step 204). This sound generation data is at the address specified by the address pointer of the working RAM 1] and a. The detailed contents of the sound generation processing in step 204 will be described later.

In addition, if the value of the clock counter or the step time data in the step time register has not reached the value of the clock counter or the step time data in the step time register, the on/off data in the assignment memory 8 or the channel area in the state of "1" (Step 215)
) If the key time data becomes "0" (step 216), the on/off data is set to the key off state of "10" (step 217), and the process returns.

On the other hand, CPtJ6 reads out the data for the next two hides (step 205), whether this data is the performance end data (step 206), or whether it is measure data (step 207).
, tone data (step 209), mote data (
Step 211), it is determined whether it is pronunciation data (Step 213).

If it is measure data (step 207), the reference clock number data for one measure in this measure data is
The clock counters of A to 111a are reset (step 208), and the process returns to step 205.

If it is timbre data (step 209), reset the timbre number data in this timbre data to the timbre number register of the working RAM 1la (step 2] 0).
. Return to step 205 above.

If it is mote data (Step 2) 1), reset the mote code, velocity list data, and note bias data in this mote data to the mote register of working RAM Ml 1 a (step 212),
Return to step 205 above.

If it is pronunciation data (step 213), the step level data in this pronunciation data is converted and synthesized based on the step list in ROMI2, and is stored in working RAM1.
The step time register 1a is reset (step 214), and the process returns to step 203 to perform step time data discrimination processing.

In the end, the reading of data for each two hides of performance information in steps 205 to 212 is as follows: Step 213.2
This continues until the 14th sound generation data is read.

Further, if the data is the read data or the performance end data in step 206, the process proceeds to steps 215 to 2]7 to decrement the Kate time data.

6-3. Playback End Processing The playback end process shown in FIG. 10 is the scanning process of each switch in the tablet switch matrix 3 and the on-event process of the playback stop switch in the switch event process.

In this process, when the CPU 6 determines that the playback stop switch is turned on (step 300),
Interlab! with programmable timer 5 in a non-enabled state. - Stop signal output (step 30)
1) Assign the on/off data of all the channel areas in which performance information is written in the assignment memory 8 to the off state of 1 (step 3 n 2 ).
Retalle.

7. Pronunciation Processing (Step 2 o 4) 1] Figure 1 is a flowchart 1 showing the detailed contents of the pronunciation processing in step 204.

In this process, the CPU 6 searches for an empty channel in the assignment memory 8 (step knob 400). This empty channel search process first searches for a switch-off channel, and if there is no switch-off channel,
The search is performed in accordance with a predetermined priority order, such as searching for the channel associated with the musical tone that started being played first.

When an empty channel is searched, the CPU 6 reads out the working RAM 1 in step 103 above:
The mode code of the +-a mode register is "0" (melody) (step 401), "1" (chord) (step 402), "2" (rhythm) (step 40).
3) Determine.

If the melody is "0", the RO shown in Figure 4 (7)
Based on the gate list in M12, convert the keto level data and synthesize the original keto time (step 4)
04). This Kate level data is stored in step 10 above.
The address of the working RAM 1.12 and the content of the pointer at this time are the same as those at step 106. and,
This network time data is written into the search empty channel area (step 405).

Next, the CPU 6 reads the accent data based on the velocity list in the ROM 12 shown in FIG. The data is converted and the original velocity data is synthesized (step 406). This accent data is also included in the pronunciation data read out in step 106 above. This velocity data is then written into the search empty channel area (step 407).

Further, the CPU 6 reads the working RAM 11. which was read out in step 103 above. The note bias of the register is multiplied by 6 to the mode 1 of a, and note number 1<data is added to synthesize the original key number data (step 408). This note nano\data is also included in the pronunciation data read out in step 106 above.

Then, this key number data is written in the search empty channel area (step 409), and the on/off data is set to "1" (step 410).

After this, the CPU 6 writes the tone number/< data in the tone number register of working RAM]-1,a to the search empty channel area (step 411).
, proceed to step 205 above.

In this way, the generation of melody sounds is started based on the melody generation data.

Also, in step 402 above, mode coat or chord “
1", convert the gate level data based on the gate list in the ROM 12 shown in FIG. 4 (7),
The original Kate time is synthesized (step 412). This cell level data is included in the sound generation data read out in step 106, and the contents of the address pointer of the working RAM 1-1a at this time are the same as in step 106. This gate time data is then written into the search empty channel area (step 413).

Next, the CPU 6 converts the court route data in the pronunciation data read out in step 106 into note number data for each constituent note based on the chord route list in the ROM 12 (step 414). Then, the note bias data of the mote register of the working RAM 11a read out in step 103 is multiplied by six, and the note number data of each constituent note is added to synthesize the original kin number data (step 415).

Furthermore, this key number data is written in the search empty channel area (step 416), and the on/off data is set to the on state of "]" (step 4]7).

Thereafter, the CPU 6 writes the heronty data of a predetermined f-nee constant value into the search empty channel area (step 418).
Write the tone number data in the tone color register 1a to the search empty channel area (step 419),
Proceed to step 205 above.

In this way, chord pronunciation is started based on the chord pronunciation data.

Furthermore, in step 403 above, if the morte coat is rhythm "2", the
Based on the velocity list data (not shown) in the mode register of working RAMI 1a, the accent data is converted and the original velocity data is synthesized (
step 420).

This accent data is also included in the pronunciation data read out in step 106 above. Then, write this velocity data to the search empty channel area (
Step 421). Next, the CPU 6 writes the percussion number in the sound generation data read out in step 106 to the tone color number address in the search empty channel area (step 422).

Further, the CPU 6 writes gate time data having a predetermined constant value into the search empty channel area (step 423), and writes the note bias data in the mode register of the working RAM 1.1a read out in step 103 above. is written as is, or the data obtained by adding the key number data of 08 to this note bias data is written as key number data in the search empty channel area (step 424), and the on/off data is set to the on state of "1". (Step 425)
.

In this way, rhythm sounding is started based on the rhythm sounding data.

8. Performance Information Recording Process FIG. 12 shows a flowchart of the performance information recording process. This process is an interwoven process that starts when the recording start switch in the tablet switch matrix 3 is turned on. This process is forcibly returned when the recording stop switch is turned on.

In this process, the CPU 6 uses the working RA Pvll
1. Clear the mode register and sound register of a (step 500), and set the moto code and velocity list data in the mode register (step 501). This mode code and velocity list data are input by operating switches in the tablet switch matrix 3. This switch is for melody,
Chord and rhythm selector switch, velocity 1.2.
3 and 4 changeover switch. Of course, the mote changeover switch and value switch, which will be described later, may be manually operated.

Next, the CPU 6 inputs data (step 5).
02), whether this input data is key number data (step 503) or heroic list data (step 504).
), herontei data (step 505), or other data (step 506). This data input is performed manually using the mode changeover switch and value switch in the tablet switch matrix 3. The mote changeover switch switches the input data to measure, mode, tone, sound, and end of performance, and the sound data can be further switched to key number, velocity, step time, and Kate time. The value switch is used to manually set a data value, and can be a knob or an up switch and a down switch.

Note that each switch on the keychain 1 may be used to input the key number and velocity data manually. This data input may be performed by inputting data one by one, or may be input in real time.

In step 503, if the input data is a key number, this key number is set in the sound register, and it is determined whether the value obtained by subtracting the throat bias data in the mode register from the key number is "0" or more and "28" or less ( step 507).

If YES, there is no need to change the note bias data; if NO, is it necessary to change the note bias data? The value of the note bias data in the mote register is "0" if no sound data has been written, or it is some value if at least one sound data has been written. There is.

If NO in step 506, the note bias data in the mote register is set to "0" in order to change the note bias data (step 508), and the key number data in the sound register is less than "6", that is, half an octave. until it becomes less than the data value of minutes (step 509).
, this "6" is subtracted from the key number data (step 510), and the note bias data is incremented by 1 each time (step 511).

If the key number data is less than 16'', the mode code, heronty list data, and note bias data of the moto register are written as mote data into the performance information area in RA~111 (step 512). Next, it is determined whether writing of all data such as accent data, note number data, step level data, gate level data, etc. into the sound generation register has been completed (step 513). If all data has been written, all data in the sound register will be stored in the RAMI as sound data.
Write it in the performance information area in I (step 514).
, clear the sound generation register (step 515), and return to step 502 above. In this case, the key number data in the sound register is stored as note number data.

In this way, when the note bias data is changed, the mote data is also written together with the sound generation data.

If Yes in step 506, there is no need to change the throat bias data, and the value obtained by subtracting the note bias data from the key number data is set as the note number (step 516), and writing of all data in the sound register is completed. If so (step 51.3), write it to the performance information area in RAM II along with other data in the sound register (step 51.4) to clear the sound register. Return to step 502.

In step 514, if the melody, chord, or rhythm changeover switch is selected, or if it is a chord, court and root are determined from the key numbers of the keys pressed at the same time, and this court root data is written.

Of course, each constituent sound may be memorized as is.

In step 504, if the input data is velocity list data, this heronty list data is written to the mode register (step 517). All data in this mode register is written as mode data to the performance information area in RAMII ( step 51.8),
Return to step 502 above.

In this way, mode data is written even if the velocity list data is changed.

In step 505, if the human data is heronicity data, this heronicity data is stored in the working RAM 11.
Set the heronti register in a, and set the accent data in the pronunciation register to "0" (step 520),
The veronti data corresponding to the accent data of this velocity list data is subtracted from the herocity data (step 522) until the veronti data no longer exceeds the herocity data corresponding to the accent data of the velocity list data (step 521). , add 1 to the accent data each time (Step 5
23).

If the heronicity data does not exceed the heronicity data corresponding to the accent data of the velocity list data, only if the accent data is "15" or more (step 524), change this accent data to "15".
” (step 525), and if all data in the sound register has been written (step 51B), this accent data is added to the performance information area in RAli] along with other data in the sound register. (Step 5) 4) to clear the sound register.
1.5), return to step 502 above.

In the above step 506, if the data is input data or other data, the data is written into the first performance information area in the RAM 1.1. In this case, when the data is manual data, step time data, or gate time data, the same processing as steps 520 to 525 and 513 to 515 described above will be performed.

The present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention. For example, the musical tone data processing method of the present invention may use magnification data as the common part data and divide the musical tone data by the magnification data as the unique part data, or how many common part data are used for each list in FIG. It may be data that indicates whether to read every other data, data that indicates whether to read out even-numbered data or odd-numbered data, or it may be data that indicates whether to read out even-numbered data or odd-numbered data. It may also be data that indicates whether to read out even-numbered data or odd-numbered data. It may also be data that indicates whether to read out even-numbered data or odd-numbered data. It may also be substituted data for deriving data. Moreover, the mote data, which is the common part data, may be inserted into the pronunciation data, which is the unique part data, not only in a common pronunciation data group, but also at regular intervals. In addition, the musical tone data processing method of the present invention may be applied to musical tone data other than Keenan data and velocity data.

[Effects of the Invention] As described in detail above, according to the present invention, common part data that is common to each musical tone data and unique part data other than the common part are extracted from each musical tone, and the unique part data is added to the musical tone. The number of pieces of data is the same as that of the data, and the number of common portion data is smaller than the number of pieces of musical tone data.

Therefore, each tone data can be compressed into unique partial data, and the length of each piece of data can be shortened. Furthermore, since the number of common portion data is smaller than the number of musical tone data, the amount of data for the entire musical tone data group can also be reduced.

[Brief explanation of the drawing]

1 to 12 show embodiments of the present invention, and FIG. 1 is a diagram showing a storage format of musical tone data,
Fig. 2 is an overall circuit diagram of the electronic musical instrument, Fig. 3 is a diagram showing performance information consisting of a group of musical tone data, and Fig. 4 is a diagram showing the RO
FIG. 5 is a diagram showing a list for converting and synthesizing each musical tone data stored in Ml 2, FIG. 5 is a diagram showing a performance example stored as performance information, and FIG.
FIG. 7 is a diagram showing the assignment memory 8, FIGS. 8 to 10 are flowcharts of performance information reproduction processing, and FIG. 11 is a diagram showing step 204 of FIG. 9. It is a flowchart diagram of pronunciation processing,
FIG. 12 is a flowchart of performance information recording processing, and FIGS. 13 and 14 are diagrams showing a conventional example. 1...Keyboard, 3...Tablet switch matrix, 5...Programmable timer, 6...CPU
, 11-RAM, 11 a-Working RAM. 12...ROM No.] Figure A Musical tone data format (]) Melody pronunciation data (2) Chord pronunciation data Nosm pronunciation data (4) Moto data Bello/Tirist Figure 1B musical tone data format (5) Performance end data (6) Measures Date evening (5) Tone data Melody performance information (2) Chord performance information Nosum performance information Figure 5 Hama Note - Ita hj (1) Melody performance, Chosha Hirohiru (3) Rhythm 7f4 Towa Figure 6 Kink RAM 1 a Fig. 8 Fig. 7 Assignment memory Fig. 10 Fig. 7 Ryo - live end Kuasato Fig. 13 Conventional musical sound data (1) Melody performance information Bar tone Pronunciation (C) Pronunciation (Shi) Pronunciation (Mi) Pronunciation (F ) Measure pronunciation (G) Pronunciation (U) Pronunciation (N) Pronunciation (G) End of performance (2) Chord performance information Measure tone pronunciation (G) Pronunciation (E) Pronunciation (G) Pronunciation (G) Address F) Pronunciation (U) ) Measure pronunciation (n) Pronunciation (shi) Pronunciation (so) Nosum enqin information

Claims (5)

[Claims] (1) A common extraction means for extracting common part data indicating parts common to each of a plurality of pieces of musical tone data, and a unique part data for extracting unique part data other than the common part data extracted by this common extraction means. Extracting means; Unique output means for outputting the same number of unique part data extracted by the unique extracting means as the musical sound data; and outputting a smaller number of common part data extracted by the common extracting means than the musical sound data. A musical tone data processing method characterized by comprising a common output means for (2) Musical sound data processing according to claim 1, characterized in that a plurality of pieces of musical sound data are stored in the form of specific part data outputted from the specific output means and common part data outputted from the common output means. method. (3) common reading means for reading out the common part data out of the data stored in the format of the musical sound data storage method according to claim 2; and unique reading means for reading out the unique part data out of the data; 1. A musical tone data processing method comprising a synthesis means for synthesizing common part data read by a common reading means and unique part data read by a specific reading means. (4) The above-mentioned common part data is bias data with a constant value for the variation range of the above-mentioned musical tone data, and the above-mentioned unique part data is the residual deviation data after removing the bias data from each musical tone data. Claim 1 characterized in:
The musical sound data processing method described in 2 or 3. (5) The above-mentioned common part data is variation rate data indicating the range of variation with respect to the variation range of the above-mentioned musical tone data, and the above-mentioned unique part data is deviation rate data indicating the position within the variation range of each musical tone data. Claim 1 characterized in that
The musical sound data processing method described in 2 or 3.