JPS6238713B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a programmable automatic performance device, in particular, a programmable automatic performance device that can easily and efficiently store repetition symbols and jump symbols in a musical score in a storage device, and that can perform these repetition and jump operations even during automatic performance. The present invention relates to a programmable automatic performance device that processes efficiently.

First, the "repetition symbol" used in the following explanation,
Define the "jump symbol". In general, repetition symbols include jump symbols (described later) used in the present invention, but in the present invention, in order to facilitate explanation, functional names are given to repetition symbols and jump symbols, respectively, as follows. Define. In other words, the symbol 〓 means to go back (repeat) with the previous symbol 〓.

In the present invention, a symbol that commands such repetition is defined as a repetition symbol. Repetition symbols are 〓, 〓,・
There are 〓・+D.S., DC, 〓, etc. (〓 is also considered as one symbol and is called a repetition symbol).

Also, the symbol 1 in the first parenthesis should be jumped to the symbol 2 in the second parenthesis.
It is a command symbol with a meaning such as.

In the present invention, a memory that commands such a jump is defined as a jump symbol. Jump symbols include 1, to〓, etc.

Conventionally, when repeat symbols and jump symbols were stored in a musical score information storage device, they were stored in the form of note addresses or measure addresses. In other words, there is a separate storage device that stores melodies in a predetermined order of addresses, and their execution addresses are
When the address of one of the repeat marks or jump marks matches, the playback automatically returns to the address of the paired repeat mark. According to this conventional method, a user who programs an automatic musical instrument must constantly know which notes are located at which addresses in the storage device, and must once transfer musical score information from commercially available musical scores to the programming sheet. There was a problem that it could not be programmed until after it was completed.

The present invention eliminates these conventional drawbacks, and allows musical score information that appears exactly as the musical score to be stored in a storage device in order, and therefore can be easily programmed directly from commercially available musical scores. The present invention provides a programmable automatic performance device that can perform the following functions. At the same time, according to the storage method of repetition symbols and jump symbols of the present invention, the storage device, especially the number of bits thereof, can be saved.
Even if features such as being able to program jump marks are added, there is little need to increase the cost of the automatic performance device.

That is, the present invention provides a storage device that stores notes and rests of a musical score, repeat symbols, and jump symbols in the order of the musical score at predetermined addresses, and a storage device that reads musical score information from the storage device during automatic performance, and stores the musical score information in the musical score information. Therefore, it is an object of the present invention to provide an automatic performance device that is equipped with means for performing automatic performance.

One of the objects of the present invention is to provide a general storage means that is efficient in storing musical score information such as repeat marks, jump marks, musical notes, and rests.

Another object of the invention is to provide a general storage means for storing repetition symbols and jump symbols in the form of coded signals.

Another object of the present invention is to provide a means for executing the basic repetition symbol "〓〓" and jump symbol "〓〓〓".

Still another object of the present invention is to repeat the symbol "〓〓"
To provide a means by which a user can externally specify the number of times a portion surrounded by is to be repeated.

Hereinafter, the present invention will be explained based on drawings of embodiments. FIG. 1 is a diagram showing an embodiment of the present invention. In Fig. 1, 201 is a pitch input device for specifying the height of the musical score and rests, and the button □rest and key 〓...〓 and the double series activated by these buttons and keys respectively It consists of two rows of switches. One end of each of the switches in one column is connected in common and connected to the input of the OR circuit 202. The switches in the other rows are each independently connected to a code converter 203, and are converted into codes corresponding to each pitch or rest. The first code converter 2 with a plurality of code converters 203
04.

Reference numeral 205 denotes a note length input device for specifying the length of a note, and is composed of two rows of switches each having buttons 〓, 〓, . One end of each row of switches is connected in common and connected to a write terminal of the temporary memory storage 208. The switches in the other rows are each independently connected to a code converter 206, and are converted into codes corresponding to each note length. A second code converter 20 with a plurality of code converters 206
7. The code converter 206 uses a tri-state output whose output terminal becomes high impedance when it is not selected. The output of the code converter 206 is wired ORed and connected to the input terminal of the temporary storage device 208. When one tone length button of tone length input device 205 is designated, a corresponding pair of switches are closed, thereby causing code converter 206 to generate a corresponding predetermined code signal. On the other hand, when one pulse enters the write terminal of the temporary storage device 208, the second code conversion device 2
The output code signal of 07 is stored in the temporary storage device 208. The contents of this temporary storage device 208 are as follows:
It will not change until the next time the tone length input device is operated.

209 is the stop of the song, the whole repetition (repeat), the repeat symbol (〓, 〓, 〓), the jump symbol (1)
It is an action input device for specifying an action, and the button 〓,
It consists of two rows of switches each controlled by the 〓〓 and 〓〓 buttons. One end of the switches in one row is connected in common and connected to the input of the OR circuit 202.
The switches in the other rows are each independently connected to the code converter 2.
10. The output of the code converter 10 is converted into a predetermined code corresponding to each switch.
A plurality of code converters 210 constitute a third code converter 211.

In this embodiment, each switch of pitch input device 201, tone length input device 205, and motion input device 209 is connected to +5V when ON, and is grounded when OFF.

The output end of the code converter 203 is tri-state type, and the outputs thereof are wired-ORed and connected to a predetermined input end of the storage device 212. Similarly, the output of the code converter 210 is wired ORed and connected to a predetermined input terminal of the storage device 212. The output end of the temporary storage device 208 is connected to the storage device 2
12 other input terminals. OR circuit 2
The output of 02 passes through a chatter prevention device 213 and is then connected to the program contact side of a program/auto changeover switch 214. switch 214
The common terminal of is connected to the input terminal of the AND circuit 215. 216 is an address counter (using a preset counter), and in the present invention, the address counter 216 stores the address of the storage device 112
It also serves as a register. Counter output symbol of address counter 216 (binary code)
is connected to the address terminal of the storage device 212. The common terminal of switch 214 is also connected to read/write controller 217 . Lead
A switch 218 communicating with the program/auto changeover switch 214 is connected to the light controller 217 . When switches 214 and 218 are connected to the program mode side, switch 2
Every time there is an input signal from the 14 common terminals, a write command signal is sent to the storage device 212, and when the switch 218 is turned to the auto mode side, regardless of the input signal, It is configured to send a read signal to the storage device 212.

The case where the switches 214 and 218 are connected to the program mode side will now be described in detail. It is assumed that the contents of the address counter 216 are initially cleared to zero, and that the storage device 212 is designated with a zero address. As shown in Figure 2,
Consider the case of programming an explanatory musical score.

This score contains repeat marks (〓, 〓) and jump marks (1), and the playing order is A→B→C→
B → D. From the note length input device 5, number 101
Enter the length of the note. As explained above, this tone length information is code-converted and stored in the temporary storage device 208. Next, the pitch input device 20
From 1, specify the pitch of 〓. 〓The pitch is code-converted by the first code conversion device 204, and
Since the operation signal of the pitch input device 201 is input to the OR circuit 202, the output becomes High (+5V). OR
The output signal of the circuit 202 is transmitted to the chatter prevention circuit 21.
3 and is applied to the read/write controller 217 via the switch 214. Therefore, the read/write controller 217 sends a write signal to the storage device 212, and the output signals of the temporary storage device 208 and the first code conversion device 204 are as follows.
Each is stored in a predetermined bit position at address zero of the storage device 212.

In this way, by turning on the pitch input device, the note information of number 101 is transferred to the storage device 211.
is stored at address zero. Here, in the program mode, the output terminal of the storage device 212 is set to high impedance. Therefore, one input of the AND circuit 215 connected to the output end of the storage device 212 is connected to +5V (High) via a resistor, so a High signal is being input.

Next, when the pitch input device is turned off, AND circuit 2
Since the signal from the common terminal of switch 214 is input to 15, its output changes from Hih to Low.
(0V). Due to this change, the address counter 216 advances by one, and the storage device 212
has been assigned address 1 and is waiting for the next information.

When inputting the note number 102, the same operation can be performed. In this case, fortunately, the note length is a quarter note, which is the same as the note number 101, so the note length information remains in the temporary storage device 208.
Therefore, there is no need to input the note length information again, and it is sufficient to simply specify the pitch. In this way, the note information of number 102 is stored in the storage device 212.
is stored at address 1.

The note at address 103 is a half note, number 10
Since the note number 2 is different from the note number 101, first, from the note length input device 205, enter the note number 101.
is input, and then 〓 is input from the pitch input device 201. Similarly, with these steps, number 10
Assume that 4,105 notes have been input.

Following the note numbered 105 is a repetition sign (ⓓ). This is input from the motion input device 209. The functions of each part at this time can be said to be exactly the same as when inputting from a pitch input device. That is, when 〓 is input from the motion input device 209, the code-converted signal is stored in address 6 of the motion storage area of the storage device 212. At this time, note length information number 105 remains in the temporary storage device 208, and is written to a predetermined bit position at address 6 in the note length storage area. Further, pitch information is also written to the pitch storage area of the storage device 212.

The input of note information for numbers 106, 107, and 108 is also the same as described above, so the explanation will be omitted. number 1
The jump mark next to the note 08 is also stored in the order of the musical score by operating the ⓓ button on the motion input device 209. Note information of numbers 109 and 110 can also be stored in the same way as the other notes mentioned above. Similarly, the next repetition symbol (〓) of number 110 can be stored by inputting 〓 from the operation input device 209. Notes numbered 111, 112, and 113 can be input in the same way as other notes. Number 114 is a quarter rest, but since it has the same length as the quarter note number 113, there is no need to specify the note length again, and you can simply enter the □ rest ( All you need to do is enter ``rest''. Finally, information indicating the end of the song (〓) is input, and in this embodiment, either 〓 or 〓 can be input from the motion input device 9. During automatic performance, if you set 〓 (stop), the song will stop there, and if you put 〓 (overall repeat), it will return to address zero and repeat the programmed song infinitely.

So far, we have explained the parts related to the program. Next, parts related to automatic performance will be explained. Switches 214 and 218 are connected to auto mode. As described above, the storage device 212 stores musical score information. When these programmed musical scores are automatically played, addresses are sequentially designated by the binary code output of the address counter 216, and musical score information is output from the output end of the storage device 212 in accordance with the addresses. In the storage device 212, a is a stop signal, b is a repeat signal, c is a repetition symbol 〓, 〓, or 〓 signal, d is a jump symbol 1 signal, and e is operation information (stop, repeat, repetition).
f is a pitch signal, g is a rest signal, h is a note length signal, and i is an output terminal for outputting a tie signal. A pitch signal (code signal) at terminal f of the storage device 212 is connected to a musical tone generator 220 . The musical tone generator 220 is composed of a code converter, a programmable counter programmed with its output code, and an oscillator, and divides the frequency of the oscillator by the programmable counter in response to pitch information from the storage device 212. and is configured to generate a musical tone signal. The output of terminal g is Low when there is rest information.
(low potential). The output of terminal i is low when there is tie information. The output of the terminal e is an operation information discrimination signal and is a low output when there is no operation command, and is applied to one input of the OR circuit 221. Furthermore, tone length information is also applied to other inputs of the OR circuit 221. Therefore, when the tone length information discrimination signal terminal e is High, the output of the OR circuit 221 is High regardless of the tone length signal h, while when the operation information discrimination signal terminal e is Low, the tone length signal h is OR. Presettable counter 22 via circuit 221
Added to 2. The presettable counter counts the pulses of the tempo oscillator 223 according to the tone length signal at the terminal h, and outputs a carry output. The carry output is High (high potential). The carry output of the presettable counter 222 is
At the same time as being input to the NAND circuit 224, it is connected to the auto mode side terminal of the switch 214 via an inverter 228. A tie signal from terminal i of the storage device 212 is input to the other input of the NAND circuit 224. The AND circuit 225 has
The output of the NAND circuit 224 and the rest information of the terminal g of the storage device 212 are input, and the AND circuit 2
The output of 25 is connected to the input of NAND gate 226. The other input of the NAND gate 226 is connected to the output signal of the musical tone generator 220. 231
is a reset switch, and the +5V power supply is connected to the reset terminal of the address counter 216 via an OR circuit 230.

Here, we will explain the simplest form of automatic performance. Switches 214 and 218 are turned to auto mode. When the presettable counter 222 counts the length of one note, it outputs a carry output (positive pulse). This carry output is connected to a clock input of an address counter 216 via a switch 214 and an AND circuit 215 (assuming that the other inputs of the AND circuit receive a High signal). Since address counter 216 counts on the leading edge of this signal, the count increases by one and therefore the designated address in storage device 212 advances by one. Further, the above-mentioned carry output is applied to the set input of the presettable counter 222, so that the setting operation is performed at the trailing edge of the above-mentioned carry signal. In this way, when the carry signal is output from the presettable counter 222, the address of the storage device 212 is incremented by one, and the note information next to the note that has been played up to now is outputted, and among them, the terminal The tone length information of h is set in the presettable counter 222. The preset counter 222 outputs a carry output again after the time corresponding to the set note length, thereby performing the same operation as described above.
The tone length information at the next address in the storage device 212 is newly set in the presettable counter 222.

In this way, the programmed note information in the storage device 222 is read out sequentially at time intervals of the programmed note length information.

The output signal of the presettable counter 222 is
This can be thought of as a musical score change signal indicating that a note has changed. The read scale information of the terminal f is converted into a musical tone by the musical tone generator 220, so that the melody of the song is automatically played according to the musical score. In addition, when there is a rest signal at terminal g (Low when it is a rest), the output of the AND circuit 225 also becomes Low,
The output musical tone signal of the musical tone converter 220 is blocked by the NAND circuit 226, and only during the length of the rest.
Musical sounds are no longer produced. If there is no tie signal at terminal i, the carry output (note change signal) of the presettable counter 222 is sent to the NAND circuit 224.
Since the pulse is inverted at , the output of the AND circuit 225 is a negative pulse. Therefore, when automatically playing musical notes without ties, the output musical tone signal of the musical tone converter 226 is temporarily stopped by the AND circuit 226 each time the musical note changes, so that the musical tone is temporarily stopped each time the musical note changes. Interrupted. However, if there is a tie signal at terminal i (Low during tie signal), the output of the NAND circuit 224 will always be High.
The output of the NAND circuit 224 is unrelated to the musical score change signal of the presettable counter 222 described above, and even if the note changes, the output musical tone signal of the musical tone generating device 220 is generated without interruption. In this way, the score change signal, rest signal, and tie signal are extracted from the score information in the storage device 222, and when there is a tie signal, the score change signal is blocked.
Furthermore, the logic output signal is blocked when there is a rest signal, and the logic output signal also controls the sounding of the musical tone signal, and when there is a tie signal, the score is not cut even if the note changes. (When playing by hand, if there is a tie, it will have the same effect as playing while holding down the key).Also, if there is a rest, you can control the sound so that it does not sound. Using this control method, controlling rests and tie signals becomes very easy.

Next, the repetition symbol and other operation information are stored in the storage device 2.
12, and the case where they are automatically played will be explained. Memory counting device 212 terminal a
The stop signal (low when stopped) is connected to one input of the AND circuit 215, and blocks the musical score change signal coming from the presettable counter 222 when stopped. Therefore, if a stop signal is received in the storage device 212, the address in the storage device 212 will no longer advance, and the automatic performance of the song will be stopped. Furthermore, the repeat signal (high during repeat) at terminal b of the storage device 212 is transmitted to the OR circuit 23.
0 to the reset terminal of address counter 216. Therefore, when the repeat signal is issued, the contents of the address counter 216 are cleared, so the specified address of the storage device 212 becomes 0.
The address will be displayed and the song will be played from the beginning. In other words, if a repeat signal is programmed at the end of a song, the automatic performance will be repeated an infinite number of times (time). The operation information discrimination signal at the terminal e of the storage device 212 is output when there is an operation signal such as the strip, repeat, repetition, or jump signal (〓, 1, 〓) mentioned in this embodiment, and is outputted via the OR circuit 221. Then, the preset input of the presettable counter 222 is entered. This signal is used to minimize the execution time of the address when the above-mentioned operation signal is input, that is, to set the presettable counter 222 to a value that makes it a full count, and immediately output a carry signal, thereby discharging the operation information. Ideally, the execution time of the address containing is set to zero. because,
This is not a good idea because if it takes time to execute the repeat signal or repeat code, it will cause an error in the length of the notes being played and disrupt the tempo of the music. The repetition signal (〓, 〓, 〓) at terminal c is applied to a first counting device 240 which outputs a predetermined signal, and the number of times it appears is counted. The output terminal J of the first counting device is connected to the write terminal of the first register 241, and is output when the number of repeated codes is the first, and every time a signal is output to the output terminal J, it is transferred to the address counter and stored. (The circuit that adds 1 is omitted to avoid complexity, but a known adder may be used.) The first counting device 40 is a presettable counter, and when it counts the number of times set by the number setting device 242, it is cleared to the original state.
The output terminal K of the first counting device 240 is connected to the number N (N=1,
2, 3, . . .), a signal is output to this terminal while the number of times the repetition symbol appears is 2 to N times. When the N+1st repetition symbol arrives, no output appears at terminals J and K of the first counting device 240;
The contents are also cleared (initialized). When a signal is output to the output of the first counting device 240, the signal is applied to the write terminal of the first register 241, and the contents of the address counter 216 plus 1 are sent to the second register 243. Transferred and stored (circuitry for adding 1 is not shown). The jump symbol signal (1) at terminal d is applied to the second counting device 245. Second counting device 245
does not output anything when the first jump signal 1 comes, and outputs an output signal when the second jump signal 1 comes, and at the same time clears the inside (initial setting). The output signal of the second counting device 245 is sent via the OR circuit 244 to the write terminal of the address counter 216 (when a counter capable of parallel presetting is used as the address counter 216,
This signal is applied to the parallel input enable terminal PE), and the contents of the second register 243 are transferred to the address counter 216 with that signal.

In the above configuration, let us consider a case where a song programmed with the musical score shown in FIG. 2 is played dynamically. N of the number setting device 242 is set to 2. Play the notes sequentially from address 0 as described above, and then
When the signal is output, an output signal appears at the terminal J of the first counting device 240, and the address counter 21
The 6th address obtained by adding 1 to the 5th address of 6 is stored in the first register 241. The performance continues sequentially from address 6 onwards, and then jump signal 1 at address 9 is played.
When , nothing appears in the output of the second counting device 245, and only the history remains as internal information. Continuing to play, the repeat signal at number 12
When , a signal appears at the output terminal K of the second counting device 245, and the address 13, which is the output value 12 of the address counter 216 plus 1, is assigned to the second register 24.
3. At the same time, the content value 6 of the first counting device 240 is transferred to the address counter 216.
will be moved to Therefore, since address 6 is specified in the storage device 212, the address counter 216 returns to address 6 and is executed. Next, when the jump signal 1 at address 9 appears, an output appears on the second counting device 245, and the contents 13 of the second register 243 are transferred to the address counter 216. Therefore,
The automatic performance jumps from number 8 to number 13.
In this way, the playing order is A→B→C→B→
It will look like D.

Also, as shown in Fig. 3, if a certain part of a song is surrounded by 〓 and 〓, and the setting value of the number setting device 242 is set to N, the 〓 signal at address a will be played automatically and the 〓 signal at address a will be output first. When the first register 24
1 stores a+1, and then when the 〓 signal of address b comes out (second time), the address counter 216
The content a+1 of the first address 241 is transferred to. As a result, the memory device 212 is repeatedly automatically played starting from address a+1. Then, when the 〓 signal of address b comes out again (third time), the same operation as the second time is performed. When the N-th repetition code (〓) appears, the content a+1 of the first register 241 is transferred to the address counter 216 while being saved. Automatic performance continues on memory device 2.
12 is repeatedly executed from address a+1, and the repetition symbol (〓) (N+1st time) at address b appears. Here, the contents of the first and second counting circuits 240 and 245 are cleared and initialized. . Then, the automatic performance continues to execute the songs starting from address b+1 in the storage device 212 (in this embodiment, 〓 and 〓 have the same function). Like this, the repetition symbol (〓 or 〓)
By using the number setting device 242, it is possible to perform the desired number of times between arbitrary addresses.

It should be noted that in the above embodiments, the explanation of parts that are not directly related to the gist of the present invention has been simplified to make the overall explanation concise.

Next, another embodiment of the present invention using a microcomputer will be described.

FIG. 4 is a system block diagram of the microcomputer MN1400 used in this embodiment (see FIG. 5).

Microcomputer MN1400 is composed of seven functional blocks.

(1) Arithmetic logic unit section (ALU, 4-bit A and B buses, ACC, temporary registers, flags) (2) Data memory section (RAM, X register, Y register) (3) Program counter section (program counter, ROM, subroutine stack) (4) Instruction decoder section (instruction register, instruction
PLA) (5) Counter section (SNSO, SNS1 sense input,
(8-bit asynchronous counter) (6) Input/output section (A, B input ports, C, D, E output ports) (7) Clock generation section (oscillator, timing signal) As is well known, a microcomputer , a type of computer, and the exchange of signals is controlled by a program using microinstructions, so it is difficult to make a clear one-to-one correspondence between each functional block in FIG. 1 and each part of the microcomputer.

However, the concept of the present invention itself remains unchanged even when a microcomputer is used. For example, code converters 203, 20 in FIG.
6,210 codes are stored in the ROM shown in FIG. However, this microcomputer
With the MN-1400, the power is turned on and the
Transfer the contents of ROM to RAM, and in the RAM area,
Perform code conversion. Temporary storage device 2 in Figure 1
The storage area 08 is also set at a predetermined address in the RAM. The storage areas of the address counter 216, the first register 241, and the second register 243 are also
Set to a specified location in RAM. In the first embodiment shown in FIG. 1, a presettable counter is used as the address counter 216. This counter functions in the arithmetic unit (ALU), accumulator (ACC), and
This can be achieved by communicating between RAMs (controlled by a program). The first counting device 240 and the second counting device 245 are similarly set by integrating the counting results in the RAM area of FIG. 4. The presettable counter 222 uses a counter with a built-in microcomputer.

FIG. 5 is a diagram showing an embodiment of the present invention using a microcomputer MN1400. Switches for the pitch input device, tone length input device, and motion input device are arranged at each intersection of the matrix. These matrices are searched by time-division search pulses from output ports CO〓~ _CO6 , and the search results are sent to the microcomputer MN-1400 from input ports Ai〓~3, Bi〓~3 and searched.
This determines which key was pressed. One pitch switch is provided for each pitch, and in the case of FIG. 5, a total of 36 pitches can be input. In order to reduce the number of switches, the note length input device is provided with independent ties (〓) and dots.
Therefore, for example, 〓. When inputting , the tone length signal is input to the microcomputer MN-1400 by pressing the 〓 switch and the □● switch. The switch output for switching between auto mode A and program mode P is also taken into the microcomputer and discriminated. One button for setting the number of repetition symbols (〓, 〓, 〓) is placed at the intersection of the Co ₆ and Ai ₃ matrices. Since there is only one switch, the setting of the number of times N is specified by, for example, the number of times this switch is pressed. Since the microcomputer MN1400 is a 4-bit microcomputer, it can be used as a music note storage device 212.
A 256×4 bits RAM was used. From the microcomputer output port EO ~ EO ₃ , the storage device 2
Twelve 8-bit address signals are output in two parts of 4 bits each, and stored in 4 bits each in a latch 301 using two 4-bit latches. The latch signal is
The DO ₇ output is applied to latch 301. The RAM 302 of the storage device 212 stores note length information (〓, 〓,
〓, 〓, 〓, 〓, 〓, 〓, 〓, 〓, 〓, 〓, 〓) 12 types and repeat, stop, jump (1), repeat (〓, 〓,
〓) A total of 16 types of operation signals of 4 types are stored.
One bit of the RAM 302 stores the presence or absence of a rest, another one bit stores the presence or absence of a tie, and the remaining two bits store pitch octave information. The RAM 304 stores note information (12 types). Each RAM302, 303, 3
Writing/reading to 03 is controlled by the output port.
Chip select signals for CO ₉ , CO ₁₀ , CO ₁₁ and CO ₈
This is performed using the R/W signal (read/write control signal). RAM303,304 pitch information 6bits
is converted into a musical tone signal by the musical tone generator 220. This is the same as that in FIG.
Also, the rest signal and tie signal of RAM303 are
As in the case of the figure, the NAND circuit 224,
Processed by an AND circuit 225 and a NAND circuit 226. The sound length signal and operation signal output from the RAM 302 are taken into the microcomputer from the Bi port of the microcomputer MN1400. When it is tone length information, from output port CO ₇ ,
A note change signal corresponding to the carry output signal of the presettable counter 222 in FIG. 1 is output. This signal is connected to the input of NAND circuit 224 and processed in the same manner as in FIG. Furthermore, when the output signal of the RAM 302 is an operation signal, the microcomputer determines whether it is a repeat, stop, repeat (〓, 〓, 〓) or jump (〓), and the address of the storage device 22 is determined. is output from the output ports of EOⓓ to _EO3 and latched to the latch 301. Fifth
223 in the figure is a tempo oscillator, which is the same as that in FIG. This oscillation signal is used as a counter input signal in the microcomputer at the input terminal.
Incorporated into microcomputer from SNS1.

6a, b, and c summarize the operations of the embodiment shown in FIG. 5 in the form of a flowchart.

As mentioned above, in the embodiment using a microcomputer, it is very difficult to explain which part of the internal RAM corresponds to which code conversion device in the embodiment shown in FIG.
Since addresses are assigned in advance inside the RAM, functions are clearly divided. Therefore, although the embodiment of FIG. 5 has a slight difference in circuit configuration, it is substantially the same as the embodiment of FIG. 1 in terms of function and configuration.

As described above, the automatic performance device according to the present invention has
The repetition symbol and jump signal are stored in a storage device as coded signals, and when they are read out from the storage device, the stored address is converted into address information.
There is no need to know difficult concepts required when using conventional automatic performance devices, such as memory device addresses, and you only need to operate the input device in the order of the musical score, and it is also inexpensive. It can be effective.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an embodiment of the present invention, FIG. 2 is a diagram explaining an input method for the automatic performance device of the present invention, and FIG. 3 is a diagram for playing the part surrounded by repeat symbols a predetermined number of times. 4 is a system block diagram of the microcomputer MN1400 used in another embodiment shown in FIG. 5. FIG. 5 is a diagram showing another embodiment of the present invention. FIG. 6 is a diagram for explaining the method. a,
b and c are diagrams for explaining the operation of the embodiment of FIG. 5; 201...Pitch input device, 205...Tone length input device, 209...Movement input device, 204, 207, 2
11...first, second, and third code conversion devices, 20
8...Temporary storage device, 212...Storage device, 216...
Address register (presettable counter),
217... Read/write controller, 222... Presettable counter, 223... Tempo oscillator, 24
0,245...first and second counting devices, 241,2
43...First and second registers, 242...Number of times setting device, MN1400...Microcomputer.

Claims (1)

[Scope of Claims] 1. A storage device for storing musical notes, rests, repetition symbols, and jump symbols at predetermined addresses in the order of the musical score, and counting the number of repetition symbols read from the storage device during automatic performance. a first counting means for counting the number of jump symbols read from the storage device; an address register for storing an execution address of the storage device; and address information of repetition and jump symbols. When the first repetition symbol is read from the storage device, the address of the storage device containing the repetition symbol or an address value obtained by adding 1 to the address of the storage device is stored. means for storing in the first register, when the second repetition symbol is read, the address of the storage device containing the repetition symbol or an address value obtained by adding 1 thereto is stored in the second register; A value obtained by adding 1 to the numerical value of the content, or the numerical value of the content as is, is stored in the address register while the contents of the first register are saved, and the address of the automatic performance execution storage device is stored. means for repeating a repeat symbol at an address next to a first repeat symbol, and thereafter reading a second repeat symbol each time a repeat symbol is read until a predetermined Nth repeat symbol is read from the storage device. means for performing the same operation as when the N+1 repetition symbol is read out from the storage device;
A means for executing the musical score information at the address next to the address where the first repetition symbol is stored, and a second counting means when the first jump symbol is read, and automatic performance is performed based on that jump symbol. The execution continues from the next address where the jump symbol is stored, and when the second jump symbol is read, the value obtained by adding 1 to the contents of the second register, or the contents as they are, is stored in the address register, An automatic performance device characterized in that musical score information is executed from the address of the next storage device where the second repetition symbol is stored. 2. The automatic performance device according to claim 1, wherein the number N of repetition symbols can be set from the outside.