JP3040583B2 - Apparatus and method for processing sound waveform data - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for processing data relating to musical tone waveforms, and more particularly to control of storing and reading out data relating to musical tone waveforms of electronic musical instruments and the like.

[0002]

2. Description of the Related Art Conventionally, a tone generator of an electronic musical instrument has the following configuration. When the musical tone waveform data in the sampling format is stored in the waveform memory and a key-on event signal is supplied, the musical tone waveform data is read out. On the other hand, this key-on event signal is also supplied to an envelope generator, and envelope waveform data is calculated. This envelope waveform data is multiplied by the above musical tone waveform data, converted into a digital signal (D / A), and output. The key-on event signal includes a signal corresponding to a key-on of a keyboard and a signal corresponding to automatic performance information.

The waveform memory stores tone waveform data such as a sine wave, a triangular wave, and a rectangular wave for one wavelength and is repeatedly read out at a speed corresponding to a pitch. On the other hand, in order to get closer to the sound of the actual instrument, the waveform waveform data of a plurality of waveforms whose waveforms gradually change are stored in the waveform memory, or the waveform waveform data of a part of the waveform after the rise of the tone. In some cases, this is stored in a waveform memory.

[0004]

However, the tone waveform data stored in the above-mentioned waveform memory is fixed and cannot be changed. Therefore, the timbre of the musical tone generated in accordance with the performance has a fixed pattern, and has little change.

[0005] In order to generate various types of musical tones, it is necessary to store a large number of types of musical sound waveform data, so that the waveform memory becomes enormous, and processing for selecting and accessing is difficult. However, there were problems such as that it became complicated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and has been made in consideration of a waveform of an electronic musical instrument capable of producing a variety of timbres without increasing the storage capacity of the waveform storage means. It is intended to provide a data processing system.

[0007]

In order to achieve the above object, the present invention provides a first method for storing data relating to a musical tone waveform.
Is detachable from the main body of the electronic musical instrument, data relating to the musical tone waveform is read out from the first waveform storing portion, and is written to the second waveform storing portion in the main body of the electronic musical instrument. To generate musical tones.

[0008]

According to the present invention, data relating to a musical tone waveform used for generating a musical tone can be varied in various ways by replacing the first waveform storage means, and the second waveform in the electronic musical instrument main body can be changed. It is not necessary to increase the storage capacity of the storage means.

[0009]

[Examples] 1. Overall Circuit FIG. 1 shows an overall circuit of an electronic musical instrument. Each key of the keyboard 1 is scanned by the key scan circuit 2, data indicating key-on and key-off is detected, and written into the RAM 6 by the CPU 5. And until then RA
The data is compared with data indicating the on / off state of each key stored in M6, and the CPU 5 determines whether each key is on or off. The keyboard 1 may be replaced by an electronic stringed instrument, an electronic tube (lead) instrument, an electronic percussion (pad) instrument, a computer keyboard, or the like.

Each switch of the panel switch group 3 is scanned by a panel scan circuit 4. By this scanning, data indicating ON / OFF of each switch is detected, and written into the RAM 6 by the CPU 5. Then, the data is compared with the data indicating the ON / OFF state of each switch, which has been stored in the RAM 6, and the CPU 5 determines the ON event and the OFF event of each switch.

In the RAM 6, in addition to the various data described above, various data processed by the CPU 5 and various data necessary for the processing are stored. The RAM 6 also has a working memory 22 described later. In ROM7,
A program corresponding to a flowchart described later and executed by the CPU 5 and a program corresponding to other processing are stored.

The CD-ROM 8 stores various tone waveform data MW. This tone waveform data MW is
This is sampling data of waveforms of musical instrument sounds such as piano, violin, flute, and cymbal. Each tone waveform data MW is selected based on the tone number data TN. Also, the CD-ROM 8 contains performance information MP of a plurality of music pieces.
Is also stored. The performance information MP is data for automatic performance such as melody, chord, rhythm and the like.

Further, the CD-ROM 8 also stores various control information CT. The control information CT includes a start of reading of the tone waveform data MW, address data of loop top and loop end,
It consists of envelope waveform data, touch data, key scaling data and the like. The tone color of the musical tone is determined by the control information CT and the tone number data TN. The data relating to the musical tone waveform includes the control information CT in addition to the musical tone waveform data MW.

The performance information MP consists of a plurality of sequential event data, and one event data E
B is the status data SS, the above parameter data PR
And step time data ST. The status data SS includes key on / off data and key number data KN, code type data, code route data, touch data, and the like.

The parameter data PR indicates the function level of the status data SS.
This is control data such as a tone color and a performance part. The step time data ST indicates the time from the bar mark data BM to the event execution. The bar mark data BM indicates a bar break. The end mark data ED indicates the end of the music. The tone number data TN and the control information CT or data designating the control information CT may be stored at the beginning of each piece of performance information MP or may be stored at a musical factor change point in the middle of the performance information MP. .

In the first logical sector of the CD-ROM 8, a volume descriptor VD is stored.
This volume descriptor VD is composed of volume name data VN and directory data DR. The volume name data VN indicates the type of memory such as the storage format of the CD-ROM 8.

The directory data DR includes the performance information MP, the control information CT, and the musical tone waveform data M.
The W includes a file name, a file size, a leading sector number, and a total number of pieces of music data SNR of the performance information MP. The file name indicates the song name for the performance information MP, the tone number data TN for the musical tone waveform data MW, and the type of the control information CT.

The CD-ROM 8 has a CD driver 9
, And the various types of information described above are read out.
The data is sent out to the bus line via the D interface 10. Also, via the MIDI interface 11,
Performance information MP is sent out to the bus line. The performance information MP is the same as the performance information MP on the CD-ROM 8. The CD interface 10 is of the asynchronous serial type, but may be of the synchronous or parallel type.

The tone waveform data MW read from the CD-ROM 8 is all loaded into the tone waveform stock memory 12 by the CPU 5. CD-ROM
8 and the performance information MP sent via the MIDI interface 11
It is loaded into the performance information memory 13 by the PU5. Further, the control information CT read from the CD-ROM 8 is loaded into the control memory 14 by the CPU 5. The MIDI interface 11
Other than the MIDI type may be used.

The tone waveform data MW of the tone waveform stock memory 12 selected by the CPU 5 is further loaded into the tone waveform memory 16 of the tone generator 15. Also, performance information MP (tone number data TN, key on / off data, pitch (key number) data) in the performance information memory 13 or control information CT (envelope waveform data, touch data, key scaling data) in the control memory 14.
Is sent to the musical tone waveform readout circuit 17, and the corresponding musical tone waveform data MW is read out from the musical tone waveform memory 16.

Further, the performance information M in the performance information memory 13 is stored.
P (key on / off data) or control information CT (envelope waveform data, touch data, key scaling data) of the control memory 14 is sent to the envelope generator 18 and corresponding envelope waveform data EN is generated.

The musical tone waveform data MW and the envelope waveform data EN are multiplied by a multiplier 19 and the accumulator 20.
And the sound is generated by the sound system 21. The above tone waveform readout circuit 17 and envelope generator 1
In FIG. 8, a tone generation system for a plurality of channels is formed by time division processing, and the tone is generated polyphonically. Various data in the RAM 6 is sent to and displayed on the LCD 23 via the LCD driver 24.

The CPU 5 has a clock signal φ having a constant period.
Is supplied via an AND gate AN, and an interrupt process is performed. The 1-bit data from the time count latch 25 is supplied to the AND gate AN as an opening signal. This 1-bit data is output from the CPU 5.

[0024] 2. Musical tone waveform data MW Figure 2, CD-ROM 8, the musical tone waveform stock memory 1
2. Music waveform data M stored in the music waveform memory 16
W is shown. The musical sound waveform data MW is sampling data of a waveform of a musical instrument sound such as a piano, a violin, a flute, and a cymbal. The musical tone waveform data MW corresponds to a waveform such as a sine wave, a triangular wave, and a square wave, and corresponds to a magnitude of a specific component content such as a harmonic component content and a noise sound component content. It may correspond to a spectrum component group corresponding to a specific formant, correspond to all types of waveforms from the start of sound generation to the end of sound generation, or correspond to touch data and / or key number data.

The tone waveform stock memory 12 may be omitted, and tone waveform data MW may be directly selected and loaded from the CD-ROM 8 to the tone waveform memory 16. Further, the musical tone waveform memory 16 is stored in the musical tone waveform memory 16.
In the case of generating a musical tone, the musical tone waveform reading circuit 17 may read the musical tone waveform memory 16 which has been exchanged.

In addition to the above, when a musical sound is produced,
-The tone waveform data MW may be read from the ROM 8. In this case, a ROM / RAM card with a high read time is used as the CD-ROM 8. Alternatively, all the tone waveform data MW of the CD-ROM 8 may be loaded into the tone waveform memory 16.

[0027] 3. Panel Switch Group 3 FIG. 3 shows the panel switch group 3 and the LCD 23. The panel switch group 3 is provided with a load key 31, a tone selection key 32, a music selection key 33, a play key 34, a stop key 35, an open key 36, a close key 37, and a disk holder 38. The load key 31 is C
Loading of tone waveform data MW from the D-ROM 8 to the tone waveform stock memory 12 or tone waveform data MW from the tone waveform stock memory 12 to the tone waveform memory 16
Key to instruct the loading of

The tone color selection key 32 is a key for selecting a tone color (tone number data TN), and the tone waveform data MW in the tone waveform memory 16 is selected. The tone color selection key 32 is "0" → "1" → "2" ... → "0"
→ Performs a ring operation with "1" ... and generates tone number data TN
Is selected. However, tone number data TN of tone waveform data MW not stored in tone waveform memory 16
About the jumping ring operation. In addition to the timbre selection key 32, the load key 31 also has a function of selecting and changing the timbre of the performance musical tone.

The music selection key 33 is a key for selecting a plurality of pieces of performance information MP in the performance information memory 13. The play key 34 is used for the selected music information MP.
This key is used to start automatic performance. The stop key 35 is a key for stopping the automatic performance.

The open key 36 is a disk holder 38
, And the close key 37 is
Key to close the lid. From the disk holder 38, the CD-ROM 8 is inserted and removed. In the disk holder 38, a detection switch for detecting the mounting / non-mounting of the CD-ROM 8 is incorporated, and an opening / closing mechanism for the disk holder 38 is also incorporated. L
On the CD 23, the tone number data TN selected by the tone color selection key 32, the song number and song name selected by the song selection key 33 are displayed. The tone color selection key 32 and the music selection key 33 may be replaced with ten keys or the like.

[0031] 4. Working Memory 22 FIG. 4 shows the working memory 22 in the RAM 6. In the working memory 22, various registers, various counters, various pointers, and various tables shown in FIG. 4 are formed.

The mode flag register 41 stores mode flag data indicating the operation mode of the electronic musical instrument.
The mode flag data indicates whether or not the bar mark data BM of the performance information MP has been continuously read (second bit), whether or not the CD-ROM 8 has been mounted (the third bit), and whether or not the disk holder 38 has been read. Open / Close (4th
Bit), presence / absence of control information CT (fifth bit), reading / non-reading of CD-ROM 8 (sixth bit)
Bit), automatic performance execution / non-execution (bit 7),
Loading / non-loading of the musical tone waveform data MW (eighth bit).

The directory table 42 stores the volume descriptor VD, that is, volume name data VN and directory data DR. The stored directory data DR is a file name, a file size, and a head sector number for each of the performance information MP, each control information CT, and each musical sound waveform data MW.
NR is excluded. In addition, the number of the logical sector of the CD-ROM 8 in which the volume descriptor VD is stored is also stored.

The song number register 43 stores the total song number data SNR of the performance information MP. The song table 44 stores the song name of each piece of the performance information MP and the storage start address data of each piece of music in the performance information memory 13 in combination.

The current song register 45 stores song number data of performance information MP to be automatically played, that is, reproduced music number data CSN. The event address register 46 stores the read address data EAD of the performance information memory 13. The status register 47 stores the status data SS of the event data EB read from the performance information memory 13, and the parameter register 48 stores the parameter data PR of the event data EB read from the performance information memory 13.
Is stored in the step register 49, and the step time data ST of the event data EB read from the performance information memory 13 is stored in the step register 49.

In the tone table 50, the tone number data TN of each tone waveform data MW and the leading address data of each tone waveform data MW of the tone waveform stock memory 12 or tone waveform memory 16 are stored in combination. . Two tone tables 50 are provided. The current tone register 51 stores point data for specifying tone number data TN of a tone to be generated in the tone table 50. The plurality of current tone registers 51 can simultaneously produce musical tones of different timbres. This table 50 can also be provided for the control information CT of the control memory 14.

The tone number register 52 stores the total tone color data ATN.
N indicates the total number of tone number data TN stored in the tone table 50, that is, the total number of tone waveform data MW stored in the tone waveform memory 16 or the tone waveform stock memory 12. This tone number register 52
Is 2 corresponding to the two tone tables 50, 50.
One is provided.

The read address register 53 stores the read address data of the tone waveform stock memory 12, the tone waveform memory 16, or the CD-ROM 8. The write address register 54 stores the write address data of the tone waveform stock memory 12 or tone waveform memory 16. The end address register 55 stores the last address data of the read area of the tone waveform stock memory 12 or tone waveform memory 16.

The time counter 56 is incremented by 1 each time the clock signal φ goes high, and the time count data TC is counted.
The tempo beat register 57 stores tempo beat data TB corresponding to the tempo and the time signature. The tempo beat data TB is equal to the maximum value of the step time data ST. When the time count data TC matches the tempo beat data TB, the time count data TB
C is cleared.

The reception buffer 58 temporarily stores the performance information MP sent via the MIDI interface 10. The performance information MP of the reception buffer 58
Are sequentially transferred to the determination buffer 59.

[0041] 5. Main Routine FIG. 5 shows a flowchart of a main routine executed by the CPU 5. This process is started when the power is turned on. First, the RAM 6, the working memory 22, the musical tone waveform stock memory 12, the performance information memory 13, the control memory 14, and the musical tone waveform memory 16 are cleared, and various initialization processes are performed (step 01). When a key-on event of the keys 31 to 37 of the panel switch group 3 is detected (step 02), it is determined what the key related to this event is (step 03).

If the key related to the event is the load key 31, the loading process is performed (step 04). If the key related to the event is the tone color selection key 32, the tone color selecting process is performed (step 05). Is a music selection key 33, music selection processing is performed (step 0).
6) If the key related to the event is the play key 34,
Play processing is performed (step 07). If the key related to the event is the stop key 35, stop processing is performed (step 08). If the key related to the event is the open key 36, the open processing is performed (step 08). Step 0
9) If the key related to the event is the close key 37, a close process is performed (step 10).

Then, performance information MP reproduction processing is performed (step 11), and performance information MP transmission / reception processing is performed (step 12). The processes in steps 04 to 12 will be described below.

6 Open Process FIG. 6 shows the open process of the disk holder 38 in step 09 described above. In this process, if the fourth bit and subsequent bits of the mode flag register 41 are “00... 0” and some process is not being executed (step 21), an open command is sent to the opening / closing mechanism of the disk holder 38 (step 21). 22), the fourth bit of the mode flag register 41 is set to "1", and the open state of the disk holder 38 is stored (step 23).

[0045] 7. Closing Process FIG. 7 shows the closing process of the disk holder 38 in the step 10 described above. In this process, if the fourth bit of the mode flag register 41 is "1" and the disk holder 38 is open (step 31), a close command is sent to the opening / closing mechanism of the disk holder 38 (step 3).
2) A scan signal is sent to the detection switch of the CD-ROM 8 (step 33).

When the signal from the detection switch is "1",
If the CD-ROM 8 is loaded (step 34),
The third bit of the mode flag register 41 is set to "1", the mounted state of the CD-ROM 8 is stored (step 35), and information loading processing is performed (step 36).
When the signal from the detection switch is "0", the CD-ROM
If 8 is not mounted (step 34), the third bit of the mode flag register 41 is set to "0" (step 37).

[0047] 8. Information Loading Process FIG. 8 is a flowchart of the information loading process of the CD-ROM 8 in step 36 described above. In this process, the sixth bit of the mode flag register 41 is set to “1”, and
The read state of the CD-ROM 8 is stored (step 4).
1), CD-ROM through the CD interface 10
The volume descriptor VD of the logical sector No. 8 is read (step 42), and based on the volume name data VN of this volume descriptor VD, this C
It is determined whether the type of the D-ROM 8 matches the present electronic musical instrument (step 43).

If they match, the directory data DR of the logical sector of the CD-ROM 8 is read out and loaded into the directory table 42 of the working memory 22 (step 44). Next, the first tone waveform data MW of the CD-ROM 8 is read and loaded into the tone waveform stock memory 12 (step 45), and the head address data and tone number data TN of the loading destination of the tone waveform stock memory 12 are stored. Is tone table 5
It is written to 0 (step 46).

The loading processing of the musical tone waveform data MW in steps 45 and 46 is repeated for all musical tone waveform data MW in the CD-ROM 8 (step 47). As the tone number data TN, the file name of the directory table 42 is used. In this way, just closing the disc holder 38 automatically generates the CD-RO
The tone waveform data MW of M8 is loaded into the tone waveform stock memory 12 inside the electronic musical instrument.

Then, the control information CT of the CD-ROM 8 is read and loaded into the control memory 14 (step 48), and the total number-of-songs data SNR in the directory data DR of the directory table 42 is loaded into the song number register 43. (Step 4
9). In this case, the same processing as steps 46 and 47 may be performed on the control information CT.

Next, the first performance information MP on the CD-ROM 8 is read and loaded into the performance information memory 13 (step 50), and the head address data and the song name of the load destination of the performance information memory 13 are stored in the song. The data is written to the table 44 (step 51). The loading process of the performance information MP in steps 50 and 51 is performed by the CD-RO
This is repeated for all the performance information MP of M8 (step 52). As the song name, the file name of the directory table 42 is used.

Thereafter, the fifth flag of the mode flag register 41
The bit is set to "1", the existence state of the control information CT is stored (step 53), the sixth bit of the mode flag register 41 is set to "0", and the CD-ROM
8 are stored (step 54).

9. Play Processing FIG. 9 shows a flowchart of the play processing of the automatic performance in the step 07. In this processing, the sixth, seventh, and eighth bits of the mode flag register 41 are "000", the CD-ROM 8 is not being read, no automatic performance is performed, and If the data MW is not loaded (step 61), the fifth bit of the mode flag register 41 is "1", and the control information CT is stored in the control memory 14 (step 62), the mode flag Register 41
Is set to "1" to set the automatic performance mode (step 63).

Next, the head address data of the music performance information MP corresponding to the reproduction music number data CSN of the current song register 45 is read from the song table 44 and written into the event address register 46 (step 64). Further, the status data S of the performance information MP in the performance information memory 13 corresponding to the head address data.
S is read and written into the status register 47 (step 65), the parameter data PR of the performance information MP is read and written into the parameter register 48 (step 66), and the step time data ST of the performance information MP is read. Is read and written into the step register 49 (step 67).

Then, the time counter 55 is cleared (step 68), tempo beat data TB is written in the tempo beat register 56 (step 69), and "1" data is set in the time count latch 25 (step 70). ). Thereby, the time count for the automatic performance is started, and the automatic performance is also started.

10. Stop Processing FIG. 10 shows a flowchart of the automatic performance stop processing in step 08 described above. In this processing, if the seventh bit of the mode flag register 41 is "1" and the automatic performance is being performed (step 75), the data of the time count latch 25 is cleared to "0" (step 76). The seventh bit of the flag register 41 is also cleared (step 77). Thus, the automatic performance is stopped.

11. Music selection process 11 is a flowchart of music selection process in step 06. In this process, if the seventh bit of the mode flag register 41 is "0" and automatic performance is not being performed (step 81), the reproduction music number data CSN of the current song register 45 is incremented by 1 (step 82). By this +1 the value of the reproduction music number data CSN is changed to the total music number data SNR.
(Step 83), the reproduction music number data CS
The value of N is reset to "1" (step 84). The playback music number data CSN is sent to the LCD 23 via the LCD driver 24 and displayed. In this manner, a song to be automatically played can be selected only by operating the song selection key 33.

Next, the reproduction music number data C obtained by adding 1
The tone number data TN in the performance information MP of the performance information memory 13 corresponding to the SN is searched (step 8).
5). If the tone number data TN is found before the end mark data ED (step 86), the same data as the tone number data TN is stored in the tone waveform memory 16.
It is determined whether the tone table 50 is stored in the tone table 50 (step 87).

If not, the tone number data TN is set in the current tone register 51 (step 88), and the head address data of the free area of the tone waveform memory 16 is set in the write address register 53 (step 89). ), Step 151 described later.
Load processing of the musical tone waveform data MW of .about.160 is performed (step 90).

As described above, in the automatic performance, if the musical tone waveform data MW corresponding to the tone of the automatic performance is not stored in the musical tone waveform memory 16, the necessary musical tone waveform data MW is automatically loaded into the musical tone waveform memory 16. You. Note that a set key may be provided in the panel switch group 3 to determine the music selection by operating the music selection key 33. In this case, between steps 84 and 85, it is determined whether the set key is turned on.
Return to step 85, and proceed to step 85 if YES.

The automatic loading process of the musical tone waveform data MW in the automatic performance in the steps 85 to 90 is as follows.
It may be performed before step 61 of the play processing described above.
Further, the automatic loading processing of the musical tone waveform data MW in the automatic performance in steps 85 to 90 may be executed between the CD-ROM 8 and the musical tone waveform memory 16 or between the CD-ROM 8 and the musical tone waveform stock memory 12. Good. In addition, the automatic loading process of the musical tone waveform data MW in the automatic performance of steps 85 to 90 is performed by the control information C
It can also be done for T. In this case, the processing target is the control information C instead of the tone number data TN.
The data specifies T.

[0062] 12. Performance Information MP Reproduction Process FIG. 12 is a flowchart of the performance information MP reproduction process of the step 11. In this processing, the seventh bit of the mode flag register 41 is "1", and the automatic performance is being performed (step 91).
If the second bit is "1" and two or more bar marks are not continuously read (step 92), the time count data TC of the time counter 56 reaches the step time data ST of the step register 49. It is determined whether or not there is (step 93).

If it has reached, the contents of the status data SS in the event buffer register 46 are determined (step 94). If the data is normal key on / off, key number, etc., this data is stored in the tone generator 1
5 and the MIDI interface 11
(Step 95).

At this time, the control information CT of the control memory 14 and the parameter data PR of the parameter register 48 are also sent, and the tone number data TN and the head address data corresponding to the control information CT and the parameter data PR are also sent. This head address data corresponds to the tone waveform memory 16,
It is read from the tone table 50. As a result, sounding / muting according to the performance information MP is performed, and an automatic performance is performed. Note that the sounding / muting process of step 95 is also executed when a normal manual performance is performed on the keyboard 1.

Next, the event address data EAD of the event address register 46 is incremented,
The next status data SS, parameter data PR and step time data ST are read out and written into the status register 47, parameter register 48 and step register 49 (step 96).

If it is determined in step 94 that the bar mark data is BM, the tempo beat data TB corresponding to the beat data included in the bar mark data BM is written to the tempo beat register 57 (step 9).
7). Then, as in step 96, the next status data SS is read out. If this data is also bar mark data BM (step 98), the second bit of the mode flag register 41 is set to "1". Is performed (step 99).

In step 94, if the end mark data is ED, the time count latch 2
5 is cleared to "0" (step 100).
The seventh bit of the mode flag register 41 is also cleared (step 101). Thus, the automatic performance is stopped.

13. Performance information MP handset Processing FIG. 13 shows a flowchart of the performance information MP transmission and reception process in step 12. In this process, the reception buffer 5
It is determined whether or not the performance information MP is stocked in step 8 (step 111). If the performance information MP is stocked, this data is loaded into the determination buffer 59 (step 112).

Then, it is determined whether or not the loaded performance information MP is completed as information (step 1).
13) If not completed, the processes of steps 111 and 112 are repeated until the process is completed. Upon completion, the performance information MP is sent to the tone generator 15 (step 114). The processing in step 114 is the same as the processing in step 95 described above. Thus, the automatic performance is also performed for the performance information MP input from the outside.

14. Interrupt processing Figure 14 shows a flowchart of interrupt processing.
This process is executed by the CPU 5 every time the clock signal φ goes high. In this process, the time counter 56 is incremented by one (step 121). If the value of the time count data TC of the time counter 56 matches the tempo beat data TB of the tempo beat register 57 (step 122), the time count data T
C is cleared (step 123), and the second bit of the mode flag register 41 is cleared (step 124). Thereby, the waiting for one measure is completed.

15. Music Waveform Data MW Loading Process FIG. 15 shows a flowchart of the music soundwave data MW loading process in step 04 described above. In this processing, the eighth bit of the mode flag register 41 is set to "1", and the fact that the tone waveform data MW is being loaded is stored (step 131), and the tone number data TN of the current tone register 51 is designated. It is determined whether or not the point data to be executed is "0" (step 132). If it is "0" and the tone number data TN is all specified, the write address register 54 is cleared to "00 ... 0" (step 133), and the current tone register 5
1 is incremented by 1 (step 134).

Then, in the read address register 53,
The head sector number of the tone waveform data MW to be loaded, that is, the head sector number of the directory table 42 specified by the current tone register 51 is set (step 135), and the start address of the next tone waveform data MW is set in the end address register 55. The sector number is set (step 136).

Next, the tone number data TN of the tone waveform data MW to be loaded, ie, the directory table 4 specified by the current tone register 51
2 is read out and the tone table 50 is read out.
(Step 137), and the value of the write address register 54 is written to the tone table 50 as head address data (step 138).

Thereafter, the musical tone waveform data MW for one sector is read from the CD-ROM 8 (step 139) and written into the musical tone waveform stock memory 12 (step 1).
40), the write address register 54 is incremented by 1 (step 141), and the read address register 53 is incremented by 1 (step 142). And this step 139-
The loading process of the tone waveform data MW 142 is performed when the value of the read address register 53 is changed to the end address register 54.
(Step 143).

When the loading of one musical tone waveform data MW is completed, the total tone color data ATN of the tone number register 52 is incremented by 1 (step 144), and the loading process of steps 134 to 144 is performed. This is repeated for the MW, that is, until the value of the read address register 53 reaches the end sector number of the CD-ROM 8 (step 145). When this load processing is completed, the eighth bit of the mode flag register 41 is cleared (step 146).

In this way, even when the tone number data TN of "0" is selected by the tone color selection key 32 and the load key 31 is turned on, the tone waveform data MW of the CD-ROM 8 is automatically set.
Is loaded into the tone waveform stock memory 12 inside the electronic musical instrument. Steps 45 to 47 are the same as steps 131 to 146. The loading processing of the musical tone waveform data MW in the above steps 131 to 146
The processing may be executed between the tone waveform stock memory 12 and the tone waveform memory 16.

In step 132, if the point data designating the tone number data TN in the current tone register 51 is not "0" and the tone number data TN is individually designated, the read address register 53
The start address data of the tone waveform data MW to be loaded from now on, that is, the start address data of the tone table 50 specified by the current tone register 51 is set (step 151), and the next tone waveform data is set in the end address register 55. The head address data of the data MW is set (step 152).

Next, the tone number data TN of the tone waveform data MW to be loaded, that is, the tone number data TN of the tone table 50 specified by the current tone register 51 is read out and written into another tone table 50 ( Step 153), the value of the write address register 54 is written to the other tone table 50 as head address data (Step 154).

Thereafter, one tone waveform data MW is read from the tone waveform stock memory 12 for one address (step 1).
55), it is written into the tone waveform memory 16 (step 156), the write address register 54 is incremented by 1 (step 157), and the read address register 53 is incremented by 1 (step 158).

The loading processing of the tone waveform data MW in steps 155 to 158 is repeated until the value of the read address register 53 matches the value of the end address register 55 (step 159). When this loading process is completed, another tone number register 5
2 is added to the total tone color data ATN (step 16).
0), the eighth bit of the mode flag register 41 is cleared (step 161).

When the specific tone number data TN is selected by the tone color selection key 32 and the load key 31 is turned on, the selected tone waveform data MW of the tone waveform stock memory 12 is automatically converted to the tone tone of the tone generator 15. It is loaded into the waveform memory 16. Step 1 above
The loading process of the tone waveform data MW of 51 to 161 is performed by C
The processing may be executed between the D-ROM 8 and the musical tone waveform stock memory 12. The loading processing of the musical tone waveform data MW in steps 131 to 161 is performed between the CD-ROM 8 and the control memory 14 by the control information CT.
It is also possible to perform

16. Tone color selection process Figure 16 shows a flowchart of a tone color selection process for the musical tone waveform data MW of step 05. In this process, if the eighth bit of the mode flag register 41 is "0" and the tone waveform data MW is not being loaded (step 171), the point data of the current tone register 51 is incremented by 1 (step 172).

If the value of the point data exceeds the value of the total tone color data ATN of the other tone number register 52 by +1 (step 173), the value of the point data is reset to "0" (step 17).
4). The tone number data TN of the tone table 50 specified by the point data is stored in the LCD driver 24.
Is sent to the LCD 23 via the. Thus, the timbre of the musical tone to be generated can be selected only by operating the timbre selection key 32.

In the tone color selection processing, the tone number data TN may be stored in the current tone register 51, and the tone number data TN may be incremented. If the same data as the incremented tone number data TN is not stored in the tone table 50 after step 172, the tone waveform data MW in the automatic performance in steps 85 to 90 described above.
May be automatically loaded. Such a thing,
In addition to tone number data TN, control information CT
Is also feasible.

The present invention is not limited to the above embodiment, but can be variously modified without departing from the spirit of the present invention. For example, the memory storing the tone waveform data MW is a CD-ROM.
In addition to the optical memory such as the ROM 8, a semiconductor memory such as a ROM / RAM card or a magnetic memory such as a floppy disk or a cassette tape may be used. The tone waveform stock memory 12 and tone waveform memory 16 are stored in a CD-ROM 8
An optical memory such as the above, a semiconductor memory such as a ROM / RAM card, etc. may be used, or may be detachable from the electronic musical instrument main body. Further, the CD-ROM 8, the tone waveform stock memory 12, and the tone waveform memory 16 may be plural. In addition, the control information CT may include data for controlling effects, rhythm, transpose, touch, volume, tempo, quantization, and the like. The claims at the time of filing the present application are as follows. [A] First waveform storage means which is detachable from the electronic musical instrument main body and stores data relating to musical tone waveforms, first reading means which reads out data relating to musical tone waveforms from the first waveform storage means, The second waveform storage means in the electronic musical instrument main body for storing data relating to the musical tone waveform read by the first reading means, and the data relating to the musical tone waveform read by the first reading means are stored in the second Writing means for writing to the waveform storage means, instruction means for instructing generation of a musical tone, and third reading means for reading data relating to a musical tone waveform from the second waveform storage means in accordance with the instruction from the instruction means. When,
Output means for outputting data relating to the musical tone waveform read out during the third readout time as data relating to a musical tone in accordance with the instruction from the instruction means, the waveform data processing system for an electronic musical instrument. [B] The waveform data processing system for an electronic musical instrument according to claim A, wherein the data relating to the musical tone waveform is data in a sampling format. [C] The first reading means and the writing means write the data relating to the musical tone waveform read out from the first waveform storing means to the third waveform storing means, and the data relating to the musical tone waveform are stored in the third waveform storing means. The electronic musical instrument waveform data processing system according to claim A, wherein the waveform data is read out and written into the second waveform storage means. [D] The waveform data processing system for an electronic musical instrument according to claim A, wherein said instruction means stores automatic performance information and reads out the automatic performance information in the order of performance.

[0086]

As described above in detail, according to the present invention, the first waveform storage means for storing the musical tone waveform data is made detachable from the main body of the electronic musical instrument, and the musical tone waveform data is read out from the first waveform memory means. Then, the musical tone is written into the second waveform storage means in the main body of the electronic musical instrument, and the musical tone is generated based on the musical tone waveform data. Therefore, the musical tone waveform data used for generating a musical tone can be varied in various ways by replacing the first waveform storage means, and the storage capacity of the second waveform storage means in the electronic musical instrument main body is changed. And the like.

[Brief description of the drawings]

FIG. 1 is an overall circuit diagram of an electronic musical instrument.

FIG. 2 is a diagram showing contents of musical sound waveform data MW.

FIG. 3 is a diagram showing a panel switch group 3 and an LCD 23.

FIG. 4 is a diagram showing a working memory 22 of a RAM 6;

FIG. 5 is a view showing a flowchart of a main routine.

FIG. 6 is a diagram showing a flowchart of an open process (step 09) of the disk holder 38.

FIG. 7 is a view showing a flowchart of a closing process (step 10) of the disk holder 38.

FIG. 8 is a diagram showing a flowchart of an information loading process (step 36).

FIG. 9 is a diagram showing a flowchart of a play process (step 07) of an automatic performance.

FIG. 10 is a diagram showing a flowchart of a stop process (step 08) of the automatic performance.

FIG. 11 is a diagram showing a flowchart of a music selection process (step 06).

FIG. 12 is a diagram showing a flowchart of performance information MP reproduction processing (step 11).

FIG. 13 is a diagram showing a flowchart of performance information MP transmission / reception processing (step 12).

FIG. 14 is a diagram illustrating a flowchart of an interrupt process.

FIG. 15 is a diagram showing a flowchart of loading processing (step 04) of musical sound waveform data MW.

FIG. 16 is a diagram showing a flowchart of loading processing (step 04) of musical sound waveform data MW.

FIG. 17 is a diagram showing a flowchart of a tone color selection process (step 05).

[Explanation of symbols]

1 ... keyboard, 3 ... panel switch group, 5 ... CPU,
6 RAM, 7 ROM, 8 CD-ROM, 9 CD
Driver, 10 ... CD interface, 11 ... MID
I interface, 12 ... stock sound waveform memory,
13: performance information memory, 14: control memory, 1
5: tone generator, 16: musical sound waveform memory, 17
... Music tone readout circuit, 18. Envelope generator, 22. Working memory, 25. Time count latch, 31. Load keys 31 and 32.
3 ... music selection key, 34 ... play key, 35 ... stop key, 36 ... open key, 37 ... close key, 38 ...
Disk holder, 41 ... mode flag register, 42 ...
Directory table, 43 ... Song number register,
44 song table, 45 current song register, 46 event address register, 47 status register, 48 parameter register, 49 step register, 50 tone table, 51 current tone register, 52 tone number register, 53 ... read address register, 54 ... write address register, 55 ... end address register, 56 ... time counter, 57 ... tempo beat register, 58 ... reception buffer, 59 ... decision buffer.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G10H 7/02 G10H 1/00 G10H 1/00 102

Claims (2)

(57) [Claims] A first waveform storage means which is detachable from the apparatus main body and stores data relating to a musical tone waveform corresponding to each tone separately from automatic performance information; and data relating to a musical tone waveform used for generating a musical tone. Second waveform storage means in the apparatus main body for storing separately from the automatic performance information; means for instructing the reproduction of the automatic performance information; and data relating to the musical tone waveform used in the specified automatic performance information. Means for detecting whether or not the tone waveform is stored in the waveform storage means; and in this detection, if the data relating to the musical tone waveform is not stored in the second waveform storage means,
Means for reading out the data relating to the musical tone waveform from the waveform storing means separately from the automatic performance information and writing the data into the second waveform storing means; and data based on the musical tone waveform stored in the second waveform storing means. Means for reproducing the automatic performance information. 2. A first waveform storage means which is detachable from the main body of the apparatus and stores data relating to musical tone waveforms corresponding to each tone separately from automatic performance information, and data relating to musical tone waveforms used for generating musical tones. In response to an instruction to reproduce the automatic performance information, data relating to the musical tone waveform used in the specified automatic performance information is stored in a second waveform storage means in the apparatus main body which stores the automatic performance information separately from the automatic performance information. It is detected whether or not the data is stored in the second waveform storage means. In this detection, if the data relating to the musical tone waveform is not stored in the second waveform storage means,
The data related to the musical tone waveform is read out separately from the automatic performance information from the waveform storing means, and written into the second waveform storing means, based on the data relating to the musical tone waveform stored in the second waveform storing means. And reproducing the automatic performance information.