JPH0375875B2 - - Google Patents

Description

[Detailed description of the invention] The invention will be explained in the following order.

Industrial application field Outline of the invention Conventional technology Problems to be solved by the invention History of the invention and main points Description of embodiments Explanation of the configuration of the electronic musical instrument in Figure 1 Explanation of the operation of the electronic musical instrument in Figure 1 1 Main processing ( (Fig. 4) 2 Program processing (Fig. 5) 3 Data input/edit processing (Fig. 6) 4 Chord/rest data input processing (Fig. 7) 5 Symbol data input processing (Fig. 8) 6 Registration data input Processing (Fig. 9) 7 Cursor movement processing (Fig. 10) 8 Auto cursor processing (Fig. 11) 9 Auto cursor interrupt processing (Fig. 12) Effects of the invention [Field of industrial application] This invention This invention relates to an automatic performance device that automatically performs a melody or accompaniment based on the performance data stored in the memory, and in particular, to simplify operations when editing the performance data in the memory. The present invention relates to an automatic performance device that achieves the following.

[Summary of the Invention] The present invention provides an automatic performance device that is capable of editing data for automatic performance, and at the time of editing, data that has already been written in a predetermined correction location (old data) and new data that can be written in this location. Depending on the combination with the data to be used (new data),
By automatically switching between the exchange mode, which changes the data in the corrected area to new data, and the insert mode, which inserts new data immediately before or after the old data, the editing operation procedure is simplified, and insert mode instructions are also available. This makes it possible to omit the switch.

[Prior Art] A conventional automatic performance device has a readable/writable memory, and automatically performs a melody or accompaniment (chords) based on the performance data written in this memory, and allows a performer or the like to use this memory. It is known that the performance data within can be freely written and edited (for example, Patent Application No. 1983).

FIG. 13 shows an example of a performance data format in the memory of such an apparatus. This memory includes a registration data area 40 in which registration data indicating the setting status of the panel controls such as the rhythm type, instrument type, and volume balance of each instrument is stored, as well as chord name or rest data and beat number data. A musical score data area 41 is provided in which music progress data consisting of sequence data such as ``darsenyo'' (DS), ``seignyo'' (〓), da capo (DC), and coda (〓), etc., is stored. Nine types of registration data, including song start registration data C and registration data 1 to 8, can be written in the registration data area 40. Furthermore, registration number data can be written in the musical score data area 41 as desired. During automatic performance, the data in the score data area 41 is sequentially read out at predetermined timing, and the accompaniment corresponding to the music progression data is automatically played.When the registration number n is read out, the data in the score data area 41 is read out sequentially at a predetermined timing. The setting status of the on-panel controls is displayed in the register data area 40.
The settings are changed to the state stored as .

By the way, in such a device, registration number data can be inserted while pointing at a desired location, for example, a song progression data location with a cursor.
Or, you can replace the registration number data with another registration number data while indicating the registration number data location with a cursor. With conventional devices, when inserting registration number data, turn on the edit switch, turn on the insert switch, specify the change location with the cursor, and then
Desired registration number data was input using a registration number designation switch. In addition, when editing the registration number data, if the edit switch is turned on but the insert switch is not turned on, specify the area to be changed with the cursor, and then input the desired registration number data using the registration number specification switch. However, after turning on the insert switch, it was necessary to turn on the edit (or exchange) switch again to switch to exchange mode before specifying the change location or inputting the change data.

Also, when changing (adding or inserting) chord (chord) data, you can use the insert switch to switch to insert mode, specify the changes with the cursor and insert the chord data, or use the edit switch to change the chord data. After setting the mode, it was necessary to specify the location with the cursor and execute the code data.

[Problems to be Solved by the Invention] In other words, in the conventional device, when editing, after specifying a changed location in musical score data with a cursor, it is difficult to determine the type of change, that is, whether the data at that changed location is to be deleted. Eliminate the hassle of having to specify the delete, insert, or replace operation mode each time depending on whether you want to replace with new data or insert new data at the changed location. It was hot.

In view of the above-mentioned problems with the conventional type, the present invention provides an apparatus that has a rewritable memory and performs automatic performance based on performance data stored in the memory. The purpose is to simplify.
A further object is to reduce the number of switches for editing.

[Backstory and main points of the invention] As a result of various studies to achieve the above object, the inventors have discovered that changing the register number data or repeat symbol data (hereinafter referred to as register data, etc.) requires that a certain amount of performance data such as chords be input. It is meaningful if it is That is, since the registration data etc. should exist between song progress data such as chord sequence data or at the beginning of the song, other data such as chord data should be left as is and placed immediately before these data. In other words, insert mode is suitable,
Exchange mode is not suitable.

On the other hand, the exchange mode is suitable for changing code data, and the code data insert mode is rarely used.

We obtained this knowledge and arrived at this invention.

That is, in the present invention, when changing the performance data in the memory, especially the musical score data, in the automatic performance device, the data written in the changed part (old data) is compared with the new data input for the change. However, depending on the combination of these old and new data, it is automatically decided whether to make changes in exchange mode or insert mode, and it is possible to omit mode specifications such as exchange and insert. making it possible.

According to one embodiment of the present invention, when the new data is registration number data, if the old data is registration number data, the exchange mode is automatically set, and the old data is data different from the registration number. If so, it will automatically switch to insert mode.

[Description of Embodiments] Embodiments of the present invention will be described below with reference to the drawings.

(Explanation of the overall configuration of the electronic musical instrument shown in FIG. 1) FIG. 1 shows the overall configuration of an electronic musical instrument to which an automatic performance device according to an embodiment of the present invention is applied. This device is equipped with an upper keyboard (UK), a lower keyboard (LK), a pedal keyboard (PK), etc., and has a keyboard performance function as a normal electronic musical instrument, as well as performance data stored in a performance data memory etc., which will be described later. It has functions such as a function to automatically play accompaniment (chords) based on , and an autorhythm function to automatically play rhythm sounds. Furthermore, it has a function of automatically playing a melody based on melody performance data stored in a performance data memory or the like.

In FIG. 1, a key switch circuit 10 includes a large number of key switches provided corresponding to each key of the keyboard UK, LK, and PK, and generates key data representing pressed keys on these keyboards.

The control operator circuit 12 scans the operators such as switches and volume controls arranged on the panel section shown in FIG. 2, and takes in the data set to these operators.

The panel section (FIG. 2) is provided with panel data setting operators, code sequence program (hereinafter referred to as CSP) data/command input operators, and the like. The panel data setting controls include a rhythm type selection switch 51 for autorhythm, a rhythm start/stop switch 52, and a rhythm volume setting switch 5 on the left side of the panel.
3. Tone or ensemble instrument/voice selection switch 54-5 for each of the above keyboards UK, LK, PK
6, volume setting switches 57 to 59, tempo setting switch 60 for automatic accompaniment/rhythm performance, and setting switches 61 to 66 for auto bass chord, arpegillo chord, melody on chord, playback sound vibrato, tremolo and sustain, etc. has been done. As CSP data/command input operators, registration switches 70-78 are arranged on the left side of the panel, and automatic performance music selection switches 79, 80 and menu switches 81-92 are arranged on the left side of the panel.

The menu changeover switch 93 switches the purpose of each of the menu switches 81 to 92, and each menu switch is assigned a purpose to be displayed in the menu display window. The display in this menu display window is switched in conjunction with the menu changeover switch 93. FIG. 3 shows an example of a menu that can be changed by the menu changeover switch 93. For example, the menu switch 81 is set as a program mode switch in FIG. It can function as a registration menu switch for setting registration data on the panel, a voice menu switch for assigning a desired tone to each of the tone color selection switches 54 to 56, a sustain switch, or the like.

In addition, each switch has a built-in LED to indicate that the mode corresponding to the switch is set to on, but in the following, these LEDs are also represented by the same numbers as the corresponding switch. shall be.

The electronic musical instrument shown in FIG. In addition to the control operator circuit 12, a program memory 18 stores a control program for the CPU 14;
A working memory 20 is provided with various working areas for temporarily storing various data generated when the CPU 14 executes the above control program, and a working memory 20 is provided with various working areas for temporarily storing various data generated when the CPU 14 executes the above control program. Registration memory 22 for registering nine types, performance data memory 2 for storing automatic chord performance data
4. A rhythm pattern memory 26 in which automatic performance data of rhythm sounds is stored; a tempo oscillator 28 consisting of a variable frequency oscillator or a frequency divider with a variable division rate; musical sounds forming melody sounds, rhythm sounds, chord sounds, etc. A forming circuit 30 and the like are connected thereto.
A sound system consisting of an amplifier 32, a speaker 34, etc. is connected to the musical tone forming circuit 30, and converts the musical tone formed by the musical tone forming circuit 30 into sound.

The working area in the working memory 20 includes an edit flag EF to indicate that the current mode is the edit mode, a pointer PNT to specify the read/write address of the performance data memory 24, and an address for the rhythm pattern memory 26. Pointers, flags, and counters such as a rhythm counter RNT for automatic performance, a rhythm run flag RRF for indicating whether automatic performance is in progress, and a beat length counter HLT are provided.

(Explanation of the operation of the electronic musical instrument shown in FIG. 1) Next, the operation of the electronic musical instrument shown in FIG. 1 will be explained with reference to the flowcharts shown in FIGS. 4 to 12.

1 Main Processing Referring to FIG. 4, after starting operation (step 100), this electronic musical instrument performs steps 102-106.
In the loop, the outputs of the key switch circuit 10 and the control operator circuit 12 are inspected, and the operated key switch and operator and the switch or operator information are detected.

If the CSP play switch (menu switch 81) is turned on, automatic chord performance processing in step 110 is started, and switches other than the edit/clear switch 92 and the CSP play switch 81, such as the voice menu switch or the sustain switch, are turned on. (In both cases, the menu switch 81) etc. is operated, the process corresponding to the operation (step 120) is performed as in the conventional case.

This electronic musical instrument performs steps 102 to 10 described above.
In the loop processing of step 6, when the edit/clear switch 92 is turned on alone, a toggle operation is performed to switch the edit mode on/off each time it is turned on. Also, edit/clear switch 92
and the treble clef switch 82 are pressed at the same time,
Among the performance data areas for two songs provided in the performance data memory 24, the song selection switches 79 and 8
All data in the area selected by 0 is rewritten (cleared) with reset data, and performance data can be written into this area. That is, in this case, the mode is new recording (NEW REC).

That is, when the edit/clear switch 92 is turned on, the treble clef switch 82 is changed depending on whether or not the treble clef switch 82 is turned on at the same time.
is not turned on, that is, when the edit/clear switch 92 is turned on alone, the edit flag EF is set in the next step 108.
After setting , if both the treble clef switch 82 and the edit/clear switch 92 are turned on at the same time, proceed to the next step 20.
Shifts to program 0 (REC P) processing. This edit flag EF is used in step 205, which will be described later, to select either the process for the edit mode (step 206) or the process for the new recording mode (step 211).

2 Program Processing Referring to FIG.
and 80 in a blinking state, step 202
In step 203, the program waits for a predetermined period of time, for example, up to 30 seconds, until any song selection switch is pressed. If neither the song selection switch 79 nor 80 is pressed within this predetermined time, the pressing of the edit/clear switch 81 is determined to be an erroneous operation, and steps 203 to 230 are performed.
Skip to and here show program mode
After turning off the LED 81 and the music display LEDs 79 and 80, this program processing is terminated and the process returns to step 102 (FIG. 4).

When it is detected in step 202 that one of the song selection switches 79 (or 80) has been pressed, the process proceeds to step 204, where the song display LED 79 (or 80) of the selected song is lit, and the other songs are turned on. The song display LED 80 (or 79) turns off. In the following step 205, the edit flag EF is checked. If the flag EF is "1", the current mode is the edit mode, so the registration data C, 1 to 8 are loaded into the registration memory 22 from the performance data area of the selected song in step 206. At the same time, the song start registration data C is set on the panel, and in step 207, the pointer PNT is set to the score data 4.
1 (PD1 in FIG. 13), and after this first data is read out and displayed (registration data, etc.) or sounded (code data), the process moves to step 220. on the other hand,
If the flag EF is determined to be "0" in step 205, the current mode is the new recording mode, so the process advances to step 211. Then, in step 211, the reset data is loaded into the performance data area of the selected song, and the registers of the selected song are cleared.Furthermore, in step 212, the registration data on the panel is loaded into the performance data area as song start registration data C. After loading, the process moves to step 220.

Step 220 checks to see if the program mode has been turned off. Program mode is turned off when the edit/clear switch 92 is pressed again during program mode setting, when the song selection switch 80 (or 79) of a song that is not currently being programmed is pressed,
This occurs when the menu changeover switch 93 is operated and when the playback switch is pressed. If the program mode is not turned off at this point, the data input/edit process of step 300 (FIG. 6) is performed.

3 Data Input/Edit Processing In this data input/edit process, the data input/edit switches are checked in steps 301-305, and steps 400-900 are performed in accordance with the pressed switch.

4. Chord/Rest Data Input Processing When any of the beat length switches 89 to 91 is pressed, the process moves from step 301 to step 400, where chord/rest data input processing is performed.
That is, referring to FIG. 7, the beat length LED corresponding to the pressed beat length step is turned on in step 401, and it is checked in step 402 whether or not memory space remains in the musical score data area 41.
If there is memory space remaining, the process advances to step 403 to clear the data at the position indicated by the pointer PNT (hereinafter referred to as the pointer position), and then in step 404, if any key on the lower keyboard is being pressed. Check whether or not. If the lower keyboard is being pressed, the process advances to step 405, where the beat length data assigned to the pressed beat length switch and the chord data detected from the pressed state of the lower keyboard are loaded to the above pointer position; If there is no pressed key on the lower keyboard, the process advances to step 406 and the beat length data and rest data are loaded to the pointer position.
Subsequently, in step 407, the beat length LED is turned off, the pointer PNT is advanced to display or sound the next data, and then the chord/rest data input process is ended. That is, step 220 (fifth
Return to figure).

Furthermore, during the chord/rest data input process, if the result of the check in step 402 is that there is no memory space, no more data can be written, so a warning sound is generated in step 410.
After the beat length LED is turned off in step 411, this chord/rest data input process is ended.

5 Symbol Data Input Processing In the data input/editing process shown in FIG. 6, if it is detected in step 302 that any of the symbol switches 83 to 85 has been pressed, the process proceeds to the symbol data input process from step 302 to step 500. to move to. That is, referring to FIG. 8, after lighting up the symbol LED corresponding to the pressed switch (step 501), it is determined whether the data at the pointer position is symbol data (step 5).
02). If it is symbolic data, step 5
After clearing the data at the pointer position in step 504 through step 03, the input symbol data is loaded into the pointer position (step 505). That is, data at the pointer position is expressed with newly input symbol data.

On the other hand, if the determination in step 502 is "no", that is, if the data at the pointer position is not symbolic data, the data after the pointer position is shifted backward one byte at a time via step 510 and step 511, and in step 505, the data after the pointer position is shifted backward one byte at a time. Load symbolic data into the pointer location. That is, new symbol data is inserted at the pointer position.

In the following step 506, it is determined whether the symbol data input and loaded in the above step is a terminal symbol. Then, if it is not a final symbol, the symbol LED is turned off in step 507,
After advancing the pointer PNT and displaying or sounding the next data, if it is a final symbol, then
After completing this symbol data input process, proceed to step 22.
Return to 0 (Figure 5).

Note that in steps 503 and 510, it is checked whether memory space remains.
This is because, as explained in the chord/rest data input process, if there is no memory space remaining, it is inappropriate to continue writing data, so an alarm is generated (step 521).
This is to turn off the symbol LED (step 522) and end the process.

6 Registration data input processing Step 3 of data input/editing processing (Figure 6)
If it is detected in step 03 that any one of the registration switches 70 to 78 has been pressed, the process moves from step 303 to registration data input processing in step 600. In other words, referring to FIG. 9, the register corresponding to the pressed switch is
After lighting the LED (step 601), it is determined whether the pointer position is at the beginning of the musical score data of the selected song (for example, PD1 in FIG. 13) (step 602). If the pointer position is not the first data position, the contents of the registration data C, 1 to 8 stored in the registration memory 22 that correspond to the pressed registration switch are reproduced on the panel (step 603). ).

Subsequently, in step 611, it is determined whether the data at the pointer position is registration data. If it is registration data, after confirming that there is memory space (step 612), clear the data at the pointer position (step 613),
The input registration data is loaded into the pointer position (step 614). On the other hand, step 61
If the judgment in step 1 is "no", that is, if the data at the pointer position is data other than the register data, it is confirmed that there is memory space (step 62).
0), the data after the pointer position is shifted backward one byte at a time (step 621), and then the process proceeds to step 614, where the input registration data is loaded into the pointer position.

That is, in the processing of steps 611 to 621, when the input data is registration data, if the data at the pointer position is the same registration data, the data at the pointer position is executed with the input registration data; If the position data is data other than registration data, the newly input registration data is inserted immediately before the data at the pointer position.

Following the processing of step 614, step 65
After turning off the registration LED in step 1 and displaying or sounding the next musical score data in the performance data area by advancing the pointer, this registration data input process is completed and the process returns to step 220 (FIG. 5).

If it is determined in step 612 or 620 that there is no memory space, it is determined that no further data can be changed or added, a warning sound is generated (step 630), and the registration LED is turned off (step 630). 631), this registration data input process is finished and step 22 is completed.
Return to 0 (Figure 5). In addition, the above step 602
In the judgment, if the pointer position is the first data position of the musical score data, the process advances to step 604, where the registration data on the panel is loaded into the registration memory 22 as song start registration data C, and in step 631, the registration LED 70 is loaded.
After turning 78 off, this registration data input process is completed and the process returns to step 220 (FIG. 5).

7 Cursor movement processing Step 3 of data input/editing processing (Figure 6)
If it is detected in step 04 that the cursor switch 86 or 87 has been pressed, the process moves from step 304 to cursor movement processing in step 700. That is, referring to FIG. 10, the cursor LED is lit in step 701, and the
In step 02, the direction of cursor movement is determined. If the left cursor switch 86 for moving the cursor to a smaller number has been pressed, the process moves to step 703. In step 703, it is checked whether the current pointer position is the first data of the musical score data. If it is the first data, there is no point in moving the cursor further to the left, so proceed to step 707 and move the cursor
Turn off the LED to end this cursor movement process. That is, the cursor movement command at this time is ignored. On the other hand, if it is determined in step 703 that the data is not the first data, the pointer is decremented in step 704, and it is checked again in step 705 whether the pointer position has become the first data. Here, if it has become the first data, then in step 706 the registration data C at the beginning of the song is set on the panel, and on the other hand, if it has not become the first data, the process directly advances to step 707. After turning off the cursor LED in step 707, this cursor movement process is completed, and step 220
Return to (Figure 5).

On the other hand, if it is determined in step 702 that the right cursor switch 87 has been pressed, the process advances to step 710. In step 710, the data at the current pointer position is examined. If this data is final symbol data or reset data, no musical score data has been written after this pointer position, and there is no point in moving the cursor any further to the right, so proceed directly to step 707 and display the cursor LED. After turning off, this cursor movement processing ends. That is, the cursor movement command at this time is ignored. On the other hand, step 71
If the checked data of 0 is neither terminal symbol data nor reset data, step 711
After incrementing the pointer with , step 7
At step 07, the cursor LED is turned off to end this cursor movement process, and the process returns to step 220 (FIG. 5).

8 Auto cursor processing Step 3 of data input/editing processing (Figure 6)
If it is detected in step 05 that the rhythm start switch has been pressed, the process moves from step 305 to automatic cursor processing in step 800. That is, with reference to FIG.
1 reads and displays the data at the pointer position,
In step 802, it is checked whether the rhythm start switch 52 is turned off. If the rhythm start switch 52 is not turned off, the rhythm run flag RRF is further checked in the next step 803.

This rhythm run flag RRF is set when chord or rest data is first read out after turning on the rhythm start switch 52 (step 80).
5) In addition to being set, it is reset when the rhythm start switch 52 is turned off (step 812) or when there is no more musical score data to be read in the auto cursor interrupt process (FIG. 12) described later (step 911). .

Therefore, immediately after the rhythm start switch 52 is turned on, the rhythm run flag RRF is not set. In this case, from step 804 onwards, the processes of steps 805 to 808 are executed according to the data read out at step 801.

That is, if the data read out in step 801 is chord or rest data, the data read out in step 801 is
Proceed to step 05, start the rhythm counter RNT, set the rhythm run flag RRF, sound the chord sound according to the read data (rests are treated as silent chords), and input the beat length data to the beat length counter HLT. After setting, step 801
Return to

Furthermore, if the data is the registration number data read out in step 801, after setting the corresponding registration data on the panel (step 806),
Also, if it is repeated symbol data, the pointer PNT is incremented in step 807 and the data is returned to step 8.
Return to 01.

On the other hand, if the data read in step 801 is a final symbol or reset data, no musical score data has been written after the current pointer position, so the auto cursor processing is ended and step 220 (step 220) is performed. Return to Figure 5).

In step 805 above, the rhythm run flag is
Once the RRF is set, step 802
In the loop of 803, the CPU waits until the rhythm start switch 52 is pressed again and turned off (auto cursor mode).

This auto cursor mode ends when it is detected that the rhythm start switch 52 is turned off (step 802). That is,
Proceeding from step 802 to step 811, the data at the pointer position is read out and displayed or sounded.Furthermore, in step 812, the rhythm counter is
After stopping the RNT, resetting the rhythm run flag RRF, and stopping the chord tones, this automatic cursor processing is ended and the process returns to step 220 (FIG. 5).

9 Auto cursor interrupt processing During the above auto cursor mode (loop processing of steps 802 and 803), the tempo generator 1
8, the following interrupt processing (step 900) is performed using the tempo clock generated at a cycle corresponding to one beat of automatic performance as an interrupt signal. Referring to FIG. 12, in step 901, the beat length counter HLT
is decremented, and in step 902 it is checked whether the count value of this beat length counter has reached zero.
If the count value of the beat length counter has not reached 0, the interrupt is canceled and the process returns to the original routine. That is, in this case, since the chord sound generation time has not passed the time indicated by the beat length data, the current sound generation continues as is.

On the other hand, when the count value of the beat length counter HLT reaches 0, this means that the chord note specified by the previous chord data has been sounded for the number of beats specified by the beat length data, so in step 903 the pointer is PNT
to read and display the data at that position,
Furthermore, the following processing is performed depending on the data type.

That is, if the read data is chord or rest data, in step 910 a chord sound corresponding to that data is sounded (rests are treated as silent chords), and a chord sound corresponding to the data is sounded (rests are treated as silent chords), and a chord sound corresponding to the data is sounded (rests are treated as silent chords). The beat length data read out by the beat length counter
After setting to HLT, cancel the interrupt and return to the original routine. As a result, from now on, chord tones are changed to chord tones based on this new chord data and are produced.

Furthermore, if the read data is a final symbol or reset data, the performance data has ended, so the rhythm counter is stopped in step 920, the rhythm run flag RRF is reset,
After the chord sound is stopped, this automatic cursor processing is terminated and the process returns to step 220 (FIG. 5).

Furthermore, if the read data is registration number data, the corresponding registration data is set on the panel in step 930, and if it is repeated symbol data, the process returns to step 903. That is, in this interrupt processing, all register data and repeat symbols (usually up to two in total) are read out until the chord or rest data, stop symbol, or reset data is read, and the chord or rest data or stop symbol is read out. Only after the symbol or reset data is read out will the interrupt be released and the original routine returned.

[Application Examples of the Invention] Note that the present invention is not limited to the above-described embodiments, and can be implemented with appropriate modifications. For example, in the above-described embodiment, the case where the present invention is applied to the automatic performance of chords has been described, but it goes without saying that the present invention can also be applied to the case where the automatic performance of a melody is performed.

[Effects of the Invention] As described above, according to the present invention, the previous data at the changed location is compared with the new data input for the change, and depending on the combination, whether the new data is executed with the previous data or Since the change operation mode is automatically determined to insert immediately before or after the changed part, it is especially important to switch to insert mode when editing performance data, and to insert after insert or delete mode. There is no need to switch to the change mode, and the operating procedure during editing can be simplified. Furthermore, if the registration is basically changed in the insert mode, it is possible to eliminate the insert mode designation switch from the panel.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an electronic musical instrument to which an automatic performance device according to an embodiment of the present invention is applied, FIG. 2 is an external view of the panel portion of the device of FIG. 1, and FIG.
An explanatory diagram of the menu changeover switch of the device shown in FIG. 1,
4 to 12 are flowcharts for explaining the operation of the apparatus shown in FIG. 1, and FIG. 13 is a format diagram of performance data stored in the memory of the apparatus shown in FIG. 10... Key switch circuit, 12... Control operator circuit, 14... CPU, 18... Program memory, 20... Working memory, 22... Registration memory, 24... Performance data memory, 30... Musical tone forming circuit, 32...Amplifier, 3
4... Speaker, 70-78... Registration switch, 82... Treble clef switch, 83
~85... Repeat symbol switch, 86, 87... Cursor switch, 88... Termination symbol switch, 8
9-91...beat length switch, 92...edit/clear switch.

Claims (1)

[Scope of Claims] 1. An input operator for inputting operation commands and performance data, a rewritable memory in which the performance data is stored, and data in this memory being changed in response to operations on the input operator. Specify the location and rewrite the new performance data input from the input controller with the old performance data written in this changed location, or rewrite the new performance data input from the above input controller with the old performance data written in this changed location, or write the data immediately before this changed location. or a write control means to be inserted immediately after, a comparison/judgment means for instructing a change mode of the write control means according to the combination of the new performance data and the old performance data, and a comparison/judgment means based on the performance data read from the memory. 1. An automatic performance device comprising: musical tone generating means for forming and emitting musical tones. 2. The performance data includes chord or rest data, beat length data, and repetition symbol data, which are music progression data, and registration data indicating the setting status of each operator on the panel, and the writing control means: When the new performance data input from the input operator is registered data when changing the performance data, if the old performance data at the changed location is registration data, the data at the changed location is replaced with the new performance data, and the data at the changed location is replaced with the new performance data. 2. The automatic performance device according to claim 1, wherein new performance data is inserted immediately before or after the changed location if it is not data.