JP2002162964A - Automatic playing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic playing device which can reproduce or stop a specific part even halfway in an automatic playing. SOLUTION: This device is equipped with a pattern data storage means 12 which stores pattern data on multiple parts, a time managing means 12 which manages the time progress of automatic playing, a readout means 10 which reads pattern data on all the parts out of the pattern data storage means in sequence according to the contents of the time managing means, a playing data storage means 12 which stores playing data on the all parts generated according to the pattern data read out by the readout means, an update means 10 which updates the playing data in the playing data storage means as the automatic playing progresses, indicating means 139 to 142 which indicates the sounding of the respective parts, and sounding means 10, 14, and 16 which sound only parts indicated by the indicating means> when the sounding of a new part is indicated by the indicating means, the sounding means sounds playing data corresponding to the new part according to the playing data in the playing data storage means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic performance apparatus for performing an automatic performance by repeating a performance pattern of several measures.

[0002]

2. Description of the Related Art Conventionally, automatic performance data (hereinafter referred to as "pattern data") for several measures (about 2 to 16 measures) stored in advance in a storage means is repeatedly read out and given to a sound source to thereby provide a predetermined sound. There is known an automatic performance device for reproducing a performance pattern.

[0003] This type of automatic performance device merely reads out and reproduces the pattern data mechanically, so there is a drawback that the sounding timing and sound volume are not fluctuated and uniform, and lack humanity. . Therefore, in order to avoid such uniform automatic performance and to have fluctuations, attempts have been made to match the cycle of human emotions by randomly changing the sounding timing, volume and the like. A variety of automatic performances can be achieved by randomly changing the sounding timing, volume, and the like. However, it has been difficult to achieve a performance pattern that matches the cycle of human emotions, for example, a play pattern that has good stiffness.

[0004] Therefore, conventionally, for example, in order to perform automatic performance with good slickness, pattern data from the beginning to the end of the tune is created even for an automatic performance tune composed of a repetition of a performance pattern of two measures. I had to remember and play it faithfully. Therefore, there is a problem that a huge memory capacity is required to obtain a performance pattern that matches the cycle of human emotions.

The above-mentioned automatic performance apparatus often has a plurality of parts (for example, rhythm, bass, accompaniment, melody, etc.) and each part can be controlled independently. . For example, JP
JP-A-8-35597 discloses an automatic performance device capable of simultaneously reproducing a plurality of parts and controlling whether or not each part is sounded. According to this automatic performance device, multiple performances can be performed by simultaneously producing a plurality of parts.

However, in an automatic performance device having a plurality of parts, there is a demand for an application in which a specific part is performed by a person instead of the automatic performance. For example, rhythm,
The bass and accompaniment parts are left to automatic performance, and the melody part is played by humans. For this purpose, it is necessary to be able to control reproduction or stop at any time in part units. In the automatic performance device disclosed in the above-mentioned publication, when a RUN switch is turned on and a start pulse is generated, the part to be reproduced (or recorded) needs to be already determined, and the part switch is changed during the performance. It is not scheduled to do so. That is, even if the part switch is turned on during the performance, the part cannot be reproduced.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an automatic performance device capable of playing or stopping a specific part even during automatic performance. To provide.

[0008]

In order to achieve the above object, the present invention provides a pattern data storing means for storing pattern data of a plurality of parts, a time managing means for managing a time progress of an automatic performance, Pattern data reading means for sequentially reading the pattern data of all parts stored in the pattern data storage means based on the contents of the management means; and all parts created based on the pattern data read by the pattern data reading means. Performance data storage means for storing the performance data of each part, updating means for updating the performance data stored in the performance data storage means in accordance with the progress of the automatic performance, instruction means for instructing each part to sound, Means for sounding only the part specified by the means. If the sound instruction is made, characterized in that sound based on the performance data in the performance data storage means corresponding to that part.

In the present invention, the pattern data of all parts are sequentially read out according to the contents of time management means, for example, a bar register / beat register, and the performance data is created therefrom and stored in the performance data storage means. Of the performance data stored in the performance data storage means, only the performance data corresponding to the part designated by the instruction means is produced. The contents of the performance data storage means are updated in accordance with the progress of the automatic performance independently of the presence / absence of sound generation.

When a new part is sounded in the middle of an automatic performance, even if the performance data stored in the performance data storage means has already passed the sound generation start timing, the sound which has not yet reached the silence timing has been reached. Starts pronunciation even from the middle.

[0011] This makes it possible to avoid a situation in which a sound to be originally produced is not produced due to a slight shift (delay) of the instruction timing by the performer's instruction means. The effect is that the performance can be started completely.

When the instruction means instructs that a predetermined part should be turned off, the sound corresponding to the instruction means may be immediately halted. it can. For example, even when the tone is damped on due to a long sustained tone or a piano sound, the sound can be ended by replacing it with a release envelope that is much faster than those envelopes.

As described above, the fact that the automatic performance of a specific part can be started or stopped at a timing desired by the player means that the timing of the specific part can be reduced at a timing finer than the timing of sounding or silencing based on the pattern data. This means that an automatic performance can be performed or stopped, and there is an effect that a new performance form becomes possible.

Further, the sounding means in the present invention, when a sounding instruction of a new part is given, when the remaining sounding time of the performance data stored in the performance data storage means is longer than a predetermined value. Can be configured to be newly pronounced only for.

According to this configuration, when a sound instruction for a new part is issued, the sound-extinguishing timing has not yet been reached, but if the remaining sounding time is shorter than a predetermined value, no sound is emitted. Only pronounce.

With this arrangement, a sound which does not affect the sense of hearing such that the sound is immediately silenced even if the sound is generated is not generated from the beginning. For example, the CPU is used as a part of the sound generating means. In such a case, the load on the CPU is reduced. In this case, the CPU can execute other processing, so that a more efficient automatic performance device can be realized.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an automatic performance apparatus according to an embodiment of the present invention.

FIG. 1 is a block diagram showing the configuration of an embodiment of an automatic performance apparatus according to the present invention. This automatic performance device
Central processing unit (hereinafter, referred to as "CPU") 10, read-only memory (hereinafter, referred to as "ROM") 11, random access memory (hereinafter, referred to as "RAM") 1.
2, operation panel 13, tone generator 14, timer 16, M
The IDI controller 17 and the FD controller 18 are connected to each other via a system bus 30. The system bus 30 includes, for example, an address line, a data line, a control signal line, and the like, and is used for transmitting and receiving various data between the above-described components.

The CPU 10 comprises pattern data reading means,
It corresponds to a part of the sounding means and the updating means.
According to the control program stored in the OM 11, the entire automatic performance device is controlled. In this CPU 10,
Two interrupt signal input terminals INT1 and INT2 are provided. An interrupt signal is supplied from the MIDI controller 17 to the interrupt signal input terminal INT1, and an interrupt signal is supplied from the timer 16 to the interrupt signal input terminal INT2. This CPU
The details of operation 10 will be described later.

The ROM 11 stores a control program for operating the CPU 10 described above.
Various fixed data used by the PU 10 for various processes are stored. The contents of the ROM 11 are read by the CPU 10. That is, the CPU 10 reads out a control program (command) from the ROM 11, interprets and executes the control program, and reads out predetermined fixed data and uses it for various processes.

The RAM 12 corresponds to the pattern data storage means. The RAM 12 temporarily stores various data used by the CPU 10. In this RAM 12,
For example, various areas such as buffers, registers, counters, and flags are defined. Specific buffers, registers, counters, flags, and the like used in the present embodiment will be described each time they appear below.
The “reception buffer”, “register group n”, and “measure register and beat register” will be described.

Receive Buffer The receive buffer is used to temporarily store MIDI data received from a MIDI controller 17 described later. As shown in FIG. 13, for example, the reception buffer includes a counter CTR, a pointer PTR, and a storage area defined in the RAM 12, and functions as a FIFO (first-in first-out) memory under the control of the CPU 10. Has become. The storage area has, for example, 256 entries, and MIDI data is sequentially stored in each entry.

The counter CTR specifies the position of the storage area where the received MIDI data is to be written. The counter CTR is controlled so as to always point to the next address of the MIDI data written last. The initial value of the counter CTR is "0", and is incremented each time MIDI data is written. When the result exceeds the maximum value TOP, the counter circulates to the minimum value BTM.

The pointer PTR indicates the position of the MIDI data to be read in the storage area. The pointer PTR is controlled so as to always point to the next address of the MIDI data read last, that is, the address of the MIDI data to be read next. This pointer P
The initial value of TR is “0”, and is incremented each time MIDI data is read, and the result is set to the maximum value TO.
If it exceeds P, it circulates to the minimum value BTM.

This reception buffer is determined to be empty when the contents of the counter CTR and the contents of the pointer PTR match. As a result of incrementing the counter CTR, the contents of the counter CTR are
If the contents match the contents of the TR, the reception buffer is full, so that the reception of MIDI data is controlled to be suppressed. If the contents of the counter CTR and the contents of the pointer PTR do not match, it is determined that MIDI data exists in the reception buffer.

The writing of MIDI data to the receiving buffer is performed by a MIDI-IN interrupt processing routine described later, and the reading of MIDI data from the receiving buffer is performed by a MIDI-IN processing routine described later. In this embodiment, the reception buffer is formed in the RAM 12, and the control of writing / reading the MIDI data is controlled by the CP.
Although the configuration is performed in U10, it can be configured using a well-known FIFO memory element instead of these.

Register Group n The register group n corresponds to the performance data storage means. Register group n (n corresponds to the part number, n
= 1-4. ) Is used to manage pronunciation for each part. Assuming that the polyphonic number of each part in the present embodiment is “8”, this register group n is composed of eight blocks, for example, as shown in FIG. Each block corresponds to one sound, "key code and its on / off" corresponding to performance data,
It consists of 3 bytes of “corrected velocity” and “remaining gate time”.

The key code (7 bits) is used to indicate a pitch. The on / off bit (1 bit) is used to indicate whether the sound indicated by the key code is in a key-on state or a key-off state. The corrected velocity (7 bits) is data obtained by correcting the velocity in the pattern data according to the velocity correction data. The remaining gate time (7 bits) is used to indicate the remaining sounding time of the sound being sounded (the sound whose on / off bit is "1"). FIG. 14A shows only a register group for one part, but actually, a register group having the same configuration is provided for each of parts 1 to 4.

Measure register and beat register The measure register BRR and the beat register BTR correspond to time management means. The bar register BRR is a register for counting the progress of the bar. This measure register BRR is 1
A count corresponding to four digits of the 0-base number is possible. The beat register BTR is a register for counting the progress of a beat in a bar. The beat register BTR is counted up for each step time. In this embodiment, one beat is 48
It is the step resolution. Therefore, the beat register BT
R is rounded to zero after counting four beats in the case of four beats, that is, 192 steps. At this time, measure register B
RR is controlled to be incremented. The bar register BRR and the beat register BTR are used to read out step time correction data and velocity correction data for generating fluctuation (the details will be described later).

In the RAM 12, in addition to the above-described buffers, registers, and the like, pattern data and fluctuation data are stored. The fluctuation data is composed of step time correction data and velocity correction data. Hereinafter, each of these data will be described.

Pattern Data Pattern data is used to generate a performance pattern of, for example, about 2 to 16 measures. The pattern data is composed of a set of 4-byte data such as a step time, a note number (key code), a gate time, and a velocity, as shown in FIG. Each pattern data corresponds to one musical note. Here, the step time designates the time at which the sound starts, and is defined by the number of steps from the beginning of the bar. The note number is used to define the pitch. The gate time is used to define the sounding time. Velocity is used to define the sound intensity (volume).

Step Time Correction Data As shown in FIG. 15, for example, part of the step time correction data is prepared for each bar of each of the parts 1-4. In the present embodiment, one beat (a quarter note) is controlled with a resolution of 48 steps. Therefore, the step time correction data is shown in FIG.
As shown in the enlarged view of FIG.
It is defined so that it can be varied within four steps. This makes it possible to delay or advance the sounding timing up to a maximum length of an eighth note. However, in the case of correcting to the negative side, the step time correction data is obtained by adding “−1 step” to the immediately preceding data due to the processing in the part 1 to 4 reading processing routine (FIGS. 9 and 10) described later. "It is created to change by minutes.

The step time correction data is prepared for each area by dividing one bar into four areas (in quarter note units). Therefore, when there are a plurality of key events in one area, the same step time correction data is used. With such a data configuration, the amount of the step time correction data can be reduced.

Velocity Correction Data As shown in FIG. 16, for example, the velocity correction data includes one bar for each of the parts 1-4. In the present embodiment, the correction rate VAn for each beat (quarter note) is stored as correction data. That is, the velocity correction data is defined so as to be able to vary within a range of “0.0 to 2.0” for each beat, as shown in an enlarged manner in FIG. Therefore, the velocity can be corrected in a range from 0 to 2 times around 1 time.

As in the case of the step time correction data, the velocity correction data is also prepared by dividing one bar into four areas (in quarter note units) and for each area. Therefore, when there are a plurality of key events in one area, the same velocity correction data is used. With such a data configuration, the amount of velocity correction data can be reduced.

Returning to the description of FIG. On the operation panel 13,
Various switches, indicators, and the like are provided for communication between the automatic performance device and the operator. Details of the operation panel 13 will be described later.

The tone generator 14 corresponds to a part of the tone generator, and generates a tone signal based on data sent from the CPU 10 via the system bus 30. The tone signal generated by the tone generator 14 is sent to the speaker system 16. The loudspeaker system 16 corresponds to a part of the sound generator, and is composed of, for example, an amplifier, a speaker, and the like.
It is a well-known device that converts a tone signal sent from a computer into an acoustic signal and emits the sound.

The timer 16 generates an interrupt signal at intervals corresponding to the tempo. The interrupt signal generation interval is determined by the CPU
10 is determined by data set in the timer 16. The interrupt signal generated by this timer 16 is
0 is supplied to the interrupt signal input terminal INT2. In the present embodiment, quarter notes are controlled with a resolution (accuracy) of 1/48. Therefore, 48 interrupt signals are generated per quarter note.

The MIDI controller 17 controls the transfer of MIDI data between the external device and the automatic performance device. Examples of the external device connected to the outside of the MIDI controller 17 include an electronic musical instrument, a sound source module, a computer, a sequencer, and the like, which can process MIDI data. The MIDI controller 17 receives MIDI data serially transmitted from an external device, and generates an interrupt signal when the MIDI data becomes, for example, 1 byte. This interrupt signal is CP
It is supplied to an interrupt signal input terminal INT1 of U10.

The FD controller 18 controls the floppy (registered trademark) disk drive 19. The floppy disk mounted on the floppy disk drive 19 stores, for example, pattern data, fluctuation data, and the like. By operating a predetermined switch (not shown) provided on the operation panel, the pattern data and the fluctuation data recorded on the floppy disk are loaded into a predetermined area of the RAM 12 via the FD controller 18.

FIG. 2 is a diagram showing a configuration example of the operation panel 13 of the automatic performance apparatus. The bar / beat indicator 130 is constituted by, for example, a 5-digit 7-segment LED indicator.
The upper four digits of the bar / beat indicator 130 indicate the "measure" currently being played automatically, that is, the contents of the bar register BRR, and the lower one digit is the "beat" currently being played automatically, that is, A beat corresponding to the content of the beat register BTR (specifically, in the case of quadruple, a value obtained by adding 1 to a quotient obtained by dividing the content of the beat register BTR by 48) is displayed. The display contents of the bar / beat display are sequentially updated as the automatic performance progresses.

The code display 131 comprises, for example, an LCD display. The code display 131 displays codes (code routes and code types) detected in a code detection process described later. In the present embodiment, it is assumed that MIDI data transmitted by MIDI channel 1 (MIDI-CH1) is regarded as data from a lower key, and code detection is performed on the data. Therefore, the code detected on the basis of the MIDI data transmitted from the MIDI channel 1 is displayed on the code display 131. Note that the code detection is performed by MID
The performance data is not limited to the performance data transmitted from the I channel 1, but may be any other MIDI channel or a plurality of MIDI channels.
The performance data transmitted from the DI channel may be configured as a target.

The tempo speed indicator 132 is, for example, 3
It consists of a digit 7-segment LED display. The tempo speed indicator 132 displays the currently set tempo speed.

Although the bar / beat display 130 and the tempo speed display 132 are composed of a 7-segment LED display, they can be composed of an LCD display, a CRT display and other various displays. . Similarly, the code display 131 is not limited to the LCD display, but may be a CRT display or other various displays.

The incrementer 133 is used for setting a tempo. The incrementer 133 is controlled such that, for example, the right-handed rotation increases the tempo, and the left-handed rotation decreases the tempo. The tempo set by the incrementer 133 is displayed on the tempo speed display 132.

The stop switch 134 is used to stop automatic performance. That is, if the stop switch 134 is pressed during the automatic performance, the automatic performance is stopped.
The play / pause switch 135 is used to start or pause automatic performance. When the play / pause switch 135 is pressed while the automatic performance is stopped or in a pause (pause) state, the LED display 1
43 is turned on to start or restart the automatic performance, and when pressed during automatic performance, the LED display 143 is turned off and the apparatus enters a pause state.

The FF switch 136 is used to increase the tempo speed for reproduction. That is, when the FF switch 136 is pressed during the automatic performance state, the LED display 144 is turned on to perform high-speed reproduction, and when pressed again, the LED display 144 is turned off and returns to the original tempo speed. The REW switch 137 is used to return the playback position. That is, when the REW switch 137 is pressed, the LED display 145 is turned on, and the measure / beat count is reduced (rewind). This rewind state can be confirmed on the bar / beat indicator 130. When the REW switch 137 is pressed again in the rewind state, the LED display 145 is turned off and the reproduction of the automatic performance is restarted.

The repeat switch 138 is used to automatically and repeatedly play a music piece. That is, if the repeat switch 138 is pressed before the automatic performance is started, the LED display 146 is turned on. When the automatic performance is performed to the end of the music, the automatic performance of the same music is repeated by returning to the beginning. When the repeat switch 138 is pressed again in this state, the LED display 146 is turned off, and the repeated reproduction state of the automatic performance is released. The repeat switch 138 is also used to repeatedly reproduce a specific section of the music by performing a predetermined operation in an automatic performance state, but the description thereof is omitted here.

The part switches 139 to 142 correspond to instruction means. The part 1 switch 139 is used to instruct the rhythm part to sound. When this part 1 switch 139 is pressed, the LED display 147 is displayed.
Is turned on to sound the rhythm part, and when pressed next time, the LED display 147 is turned off and the sound of the rhythm part is stopped. Similarly, the part 2 switch 140 is used to instruct the sounding of the bass part. When this part 2 switch 140 is pressed, the LED display 148 is turned on and the base part is sounded.
The ED display 148 is turned off, and the sound of the bass part is stopped.

Similarly, the part 3 switch 141 is used to instruct the sounding of an accompaniment part (for example, a chord part). This part 3 switch 14
When the button 1 is pressed, the LED display 149 is turned on to emit the sound of the accompaniment part. When the button 1 is pressed next time, the LED display 149 is turned off and the sound of the accompaniment part is stopped. Similarly, the part 4 switch 142 is used to indicate a melody part. When this part 4 switch 142 is pressed, the LED display 150 is turned on and the melody part is sounded.
The ED display 150 is turned off and the sound of the melody part is stopped.

Among the above parts, the rhythm part, the bass part, and the accompaniment part are produced by repeatedly executing pattern data of about one to several measures, and the present invention gives fluctuations to these parts. Is to eliminate monotony. The melody part is
All pattern data for one music is stored.

In addition to the above, the operation panel 13 has a tone selection operator for selecting a desired tone from a plurality of tones, a volume operator for adjusting the volume, and an operation for loading data from the floppy disk into the RAM 12. Although these elements are provided, they are not directly related to the present invention, and thus illustration and description are omitted.

The setting states of the switches and the like on the operation panel 13 configured as described above are read into the CPU 10 as follows. That is, the CPU 10 sends a scan command to the operation panel 13. The operation panel 13 sends a signal indicating on / off of each operation switch and a signal indicating the current value of the incrementer 133 to the CPU 10 in response to the scan command. The CPU 10 generates panel data (consisting of switch data in which ON / OFF of each switch corresponds to one bit and incrementer data indicating a set value of the incrementer 133) from the received signal. This panel data is stored in a RAM under the control of the CPU 10.
12 is used to determine the presence or absence of a panel event (details will be described later).

Next, the operation of the automatic performance device of the present invention will be described in detail with reference to the flowcharts shown in FIGS.

(1) Main Processing (FIG. 3) FIG. 3 is a flowchart showing a main routine of the automatic musical instrument according to the present invention, which is started when the power is turned on. When the power is turned on, first, an initialization process is performed (step S10). In this initialization process, the internal state of the CPU 10 is set to the initial state, and an initial value is set to a register, a counter, a flag, or the like defined in the RAM 12.

When the initialization process is completed, a panel switch scan process is performed (step S1).
1). That is, the CPU 10 sends a scan command to the operation panel 13. Thereby, the operation panel 13
The panel data is generated as described above,
Send to The CPU 10 stores this panel data (hereinafter, referred to as “new panel data”) in a predetermined area of the RAM 12. Next, panel data read in the previous panel switch scan process and already stored in the RAM 12 (hereinafter referred to as "old panel data") is compared with the new panel data, and a panel having a different bit turned on is compared. Create an event map.

Next, the presence or absence of an event is checked (step S12). This is performed by referring to the panel event map. That is, it is checked whether or not one or more bits are on in the panel event map. If there is no bit, there is no event, and if there is one or more, there is an event. Each is judged. If it is determined in step S12 that there is an event, a panel control process is performed (step S13). Otherwise, the panel control process is skipped. The details of the panel control process will be described later.

Next, the reception data (MI
DI data) is checked (step S).
14). This is performed by checking whether or not the contents of the counter CTR and the contents of the pointer PTR match as described above. Here, if it is determined that there is received data in the receiving buffer, a MIDI-IN process is performed (step S15);
Processing is skipped. Details of the MIDI-IN processing will be described later.

Next, the part 1 to part 4 reading processing is executed (step S16). This process is a process of reading the pattern data of each part and reproducing a musical tone. The details of the part 1-4 reading process will be described later.

Next, "other processing" is performed (step S17). In this "other processing", control of the floppy disk, tone color selection processing, volume setting processing, and the like are performed, but the description is omitted because it is not directly related to the present invention. Thereafter, the process returns to step S11, and the same processing is repeated thereafter.

(2) MIDI-IN interrupt processing (FIG. 4) This MIDI-IN interrupt processing is executed by interrupting the processing of the main routine. In this MIDI-IN interrupt processing, the MIDI
Data is stored in the reception buffer. The MIDI controller 17 receives the MIDI serially transmitted from the external device.
When the DI data reaches one byte, an interrupt signal is generated.
This interrupt signal is input to the interrupt signal input terminal INT1 of the CPU 10.
Supplied to As a result, the CPU 10 enters the interrupt mode, and the MIDI-IN interrupt processing routine is called.

In the MIDI-IN interrupt processing, first,
The MIDI data is read from the DI controller 17 and written to a position of the reception buffer indicated by the counter CTR (step S20). Next, the counter CTR is incremented (step S21), and it is checked whether the result has exceeded the maximum value TOP of the storage area (step S22). And the maximum value TOP
MIDI-IN
The processing routine returns to the interrupted position of the main routine. On the other hand, if it is determined in step S22 that the value exceeds the maximum value TOP, the content of the counter CTR is rewritten to the minimum value BTM (step S23), and thereafter, the MIDI-IN processing routine interrupts the main routine. Return to position. As a result, a function of a circular buffer for rounding from the maximum value TOP to the minimum value BTM is realized.

Although not shown in the figure, if the result of incrementing the counter CTR exceeds the value of the pointer PTR, the reception buffer is full, and the MIDI data fetching process is suppressed. .

(3) Panel Control Process (FIG. 5) Next, the details of the panel control process performed in step S13 of the main routine will be described with reference to the flowchart of FIG.

This panel control processing routine is called when it is determined in the main routine that an event such as a panel switch has occurred. In the panel control process, first, it is checked whether or not there is an event of the incrementer 133 (step S30). That is, the incrementer data in both the new and old panel data is compared, and if they differ, it is determined that the event of the incrementer 133 has occurred. If it is determined in step S30 that there has been an event of the incrementer 133, tempo speed processing is performed (step S31). Otherwise, the tempo speed processing is skipped. In the tempo speed process, the incrementer data in the new panel data is set in the timer 16 and sent to the tempo speed indicator 132. Thereby, the interval of the interrupt signal generated from the timer 16 is changed, and the tempo speed of the automatic performance is changed. The changed tempo speed is displayed on the tempo speed indicator 132.

Next, it is checked whether or not there is an event of the stop switch 134 (step S32). This is the stop switch 13 in the panel event map.
This is performed by checking whether the bit corresponding to 4 is “1”. Here, if it is determined that there is an event of the stop switch 134, a stop process is performed (step S33), otherwise, the stop process is skipped. In the stop processing, the automatic performance flag defined in the RAM 12 is cleared to “0”. As a result, in the timer interrupt processing (FIG. 12) described later, the updating of the bar register BRR and the beat register BTR is suppressed, the progress of the automatic performance is stopped, and the sound emission of each part is stopped.

Next, it is checked whether there is an event of the play / pause switch 135 (step S3).
4). This is performed by checking whether or not the bit corresponding to the play / pause switch 135 in the panel event map is “1”. Here, if it is determined that there is an event of the play / pause switch 135, a play process is performed (step S35), otherwise, the play process is skipped. In the play processing, when it is determined that the automatic performance flag is "0", that is, the play / pause switch 135 is pressed while the automatic performance is stopped, the automatic performance flag is set to "1" and the LE is set.
The D display 143 is turned on. As a result, in the timer interrupt processing (FIG. 12) described later, updating of the bar register BRR and the beat register BTR is started, and the automatic performance proceeds. Conversely, if it is determined that the automatic performance flag is "1", that is, the play / pause switch 135 is pressed during the automatic performance, the automatic performance flag is cleared to "0" and the LED display 143 is turned off. Is done. This allows
The same processing as when the stop switch 134 is pressed is performed, and the sound emission of each part is stopped.

Next, it is checked whether or not there is an event of the FF switch 136 (step S36). This is performed by checking whether the bit corresponding to the FF switch 136 in the panel event map is “1”. Here, if it is determined that there is an event of the FF switch 136, FF processing is performed (step S3).
7), otherwise the FF processing is skipped. FF
In the processing, when it is determined that the FF flag defined in the RAM 12 is “0”, that is, when the FF switch 136 is pressed during the normal reproduction, the FF flag is set to “1”, and the predetermined data is stored in the timer 16. While being set,
The LED indicator 144 is turned on. As a result, the tempo speed is increased and high-speed reproduction is performed. Conversely, FF
The flag is “1”, that is, the FF switch 13
When it is determined that 6 has been pressed, the FF flag is cleared to "0", the original data is restored to the timer 16, and the LED display 144 is turned off. This returns to the tempo speed before the FF switch 136 was pressed.

Next, it is checked whether there is an event of the REW switch 137 (step S38). This is performed by checking whether the bit corresponding to the REW switch 137 in the panel event map is “1”. Here, if it is determined that there is an event of the REW switch 137, the REW process is performed (step S39), and if not, the REW process is skipped. In the REW process, the REW flag defined in the RAM 12 is set to “0”,
When it is determined that 7 has been pressed, the REW flag is set to "1".
And the bar register B defined in the RAM 12
The RR and beat register BTR are decremented at a predetermined rate, the result is sent to the bar / beat indicator 130, and the LED indicator 145 is turned on. Thereby, the display of the bar / beat indicator 130 is decremented, and the sequence of the automatic performance is retreated. Note that the sound generation is stopped during the REW processing. Conversely, if the FF flag is “1”,
That is, when it is determined that the REW switch 137 has been pressed during high-speed playback, the REW flag is cleared to “0”, and
The LED display 145 is turned off. As a result, the automatic performance is restarted from the reduced bar register BRR and beat register BTR.

Next, it is checked whether there is an event of the repeat switch 138 (step S40). This is the repeat switch 13 in the panel event map.
This is performed by checking whether the bit corresponding to 8 is “1”. Here, if it is determined that there is an event of the repeat switch 138, a repeat process is performed (step S41), otherwise, the repeat process is skipped. In the repeat processing, if the repeat flag defined in the RAM 12 is “0”, the repeat flag is set to “1” and the LED display 146 is turned on. Conversely, if the repeat flag is “1”, the repeat flag is cleared to “0” and the LED display 145
Is turned off. Thereby, although the details are not shown, when the reading of the pattern data for one music is completed, if the repeat flag is "1", the sequence of the automatic performance returns to the beginning of the music, and the same automatic performance is repeated. Be executed. On the other hand, if the repeat flag is "0", the automatic performance is stopped.

Next, it is checked whether the event is a part switch 139-142 event (step S4).
2). This is performed by checking whether the bit corresponding to the part switches 139 to 142 in the panel event map is “1”. Here, when it is determined that there is an event of the part switches 139 to 142, the part 1 to 4 switching processing is performed (step S43), otherwise, the part 1 to 4 switching processing is skipped.
Thereafter, the control returns from the panel control processing routine and returns to the main routine. The details of the part 1-4 switching process will be described later.

(4) MIDI-IN processing (FIGS. 6 and 7) This MIDI-IN processing routine is called from the main routine at regular intervals. In the MIDI-IN process, first, one MIDI message is extracted from the reception buffer, and it is checked whether or not the MIDI channel number included in the MIDI message is "1", that is, the data of the lower key (step S50). This is performed by checking the channel number in the lower 4 bits of the first byte of the MIDI message. Here, if it is determined that the channel number is not "1", the process branches to step S67, and a tone generation process based on the MIDI data is performed. On the other hand, if it is determined that the channel number is “1”, that is, it is data of the lower key, a key bit map is created (step S51). The key bitmap is data in which the on / off state of all keys is associated with “1” or “0”, respectively.

Next, a code detection process is performed (step S52). That is, a code detection process is performed using the key bitmap created above, and a code type and a code route are detected. This code detection can be performed using various known methods. The code detected here is stored in the new code area of the RAM 12 as a new code. The detected code type and code route are sent to the code display 131 and displayed.

Next, it is checked whether or not a code change has occurred (step S53). This is performed by comparing the old code detected in the previous code detection process and stored in the old code area of the RAM 12 with the new code. When it is determined that the code has not changed, the process returns from the MIDI-IN processing routine and returns to the main routine. That is, even if a MIDI message that does not change the chord type and chord root is input, the automatic performance state does not change. On the other hand, if it is determined that the code has changed, the process proceeds to step S54.
The processing corresponding to the following code change is performed.

The automatic performance device according to the present embodiment has a configuration in which when a chord is changed, not only the chord constituent sound changes but also the performance pattern changes. For example, the chord of the major and the chord of the minor have different playing patterns. In order to realize a function of changing a performance pattern in accordance with a detected chord, pattern data for each chord type, for example, pattern data of a major chord and pattern data of a minor chord are always read from the RAM 12. Whether to use the pattern data is determined by the detected code type.

FIG. 17 shows an outline of the operation of the tone generation process when the chord changes. FIG. 17 shows a case where the chord changes from C major to C minor at time TA. The portion surrounded by a thick line indicates that the pattern data is to be read, and the hatched portion therein indicates the readout. This indicates that sound is generated based on the performed pattern data.

Before time TA, the sounds (keys 1, 2, 3) constituting the C major are pronounced in the performance pattern of the major, and the sounds constituting the C minor (keys 1, 4, 3)
In the case of 5), only the pattern data is read in the minor performance pattern. Then, when the C minor, which is a new chord, is detected at the time TA, thereafter, the sounds (keys 1, 4, and 5) constituting the C minor are produced in the minor performance pattern. FIG. 17 shows that at time TA, the keys 2 and 3 that have been pressed until then are released,
The keys 4 and 5 are newly pressed, and the key 1 which has been pressed until then is shown as being continuously pressed.

In the fixed time TR immediately after the time TA, the following processing is performed. That is, when a chord change is detected, the sound being generated is immediately stopped (see keys 1 and 2 in FIG. 17). Of the chord constituent sounds after the chord change,
Even if the sound ends sounding within a certain time TR after the chord change is detected, the sounding sound generated by the previous chord continues sounding (see key 1 in FIG. 17). A sound that ends sounding within a predetermined time TR after a chord change is detected and has not been sounded by the previous chord does not start new sounding (see key 4 in FIG. 17). If the sound does not end within a predetermined time TR after the chord change is detected, the sound is newly started (key 5 in FIG. 17).
reference).

By performing this processing, no sound is assigned to a sound that should be sounded in response to a chord change, but whose sound is stopped in a short time, such as the key 4 in FIG. In this way, there is no problem in the sense of hearing even if pronunciation is not assigned to a sound that disappears in a short time.
There is an advantage that the time required for the CPU 10 to perform the channel assignment processing is saved, and the burden on the CPU 10 is reduced.

Returning to the description of FIG. The above-described function is realized in the processing for the code change in step S54 and subsequent steps. First, the part number is initialized to "n = 2" (step S54). This is the initialization of a part number for performing processing only on parts 2 to 4 because part 1 is a rhythm part and has nothing to do with chord change.

Next, a key code of the new pattern of part n is generated (step S55). That is, step S
A key code of a chord constituent sound (hereinafter, referred to as a “new key code”) is generated from the chord type and the chord root detected at 52. In the example shown in FIG. 17, three new key codes corresponding to keys 1, 4 and 5 are generated. Next, the remaining gate time of the new pattern of part n is generated (step S56). The remaining gate time is calculated from the sounding end time calculated from the step time and the gate time included in the pattern data of the new pattern and the current contents of the beat register BTR.

Next, the correction velocity of the new pattern of part n is generated (step S57). The details of the generation of the corrected velocity are shown in the flowchart of FIG. In the correction velocity generation processing, first, the correction rate VAn is read (step S70). That is, the bar register BRR and the beat register BT
The correction rate VAn is read from the corresponding position in the velocity correction data of the RAM 12 using the content of R as an address. Next, the read correction rate VAn
Is multiplied by the velocity VELO (velocity data in the pattern data) at that time, and the corrected velocity VL
An is generated (step S71).

Next, it is checked whether or not the result of the multiplication is larger than 127 (step S72). If it is larger than 127, 127 is set as the new corrected velocity VLAn (step S73).
Is skipped, and the multiplication result is used as it is as a new corrected velocity VLAn. Thereafter, the routine returns from the corrected velocity generation routine and returns to the MIDI-IN processing routine. By the processing of steps S55 to S57 of the MIDI-IN processing routine described above, the keys corresponding to the chord constituent sounds of the new pattern (in the example shown in FIG. 17, each of the keys 1, 4 and 5). The creation of the code, the remaining gate time and the corrected velocity is completed.

Next, a comparison process and a sound generation continuation / silence process of the register group n are performed (steps S58 and S5).
9). That is, the key code stored in the register group n in the key-on state is compared with the new key code. If a matching key code is found in the register group n, no processing is performed on the key code. Not done. Therefore, sound generation is continued. This is a process corresponding to the case of key 1 in FIG. On the other hand, in the above comparison, for a key code that was a chord constituent sound before the chord detection but was no longer a chord constituent sound after the chord detection,
The on / off bit of the corresponding key code in register group n is cleared to "0", and a key-off output is performed. Here, the "key-off output" refers to a series of processes for sending predetermined data to the tone generator 14, replacing the current envelope with a release envelope that is much faster than the current envelope, and terminating the sound generation. It is. This is a process corresponding to the case of the keys 2 and 3 in FIG.

Next, it is checked whether the key code is a newly generated key code (step S60). That is, it is checked whether or not the new key code is a key code that has become a new chord constituent sound after the chord detection, but not a chord constituent sound before the chord detection. If it is determined that the key code is a newly generated key code, it is checked whether the remaining gate time corresponding to the key code is equal to or longer than a predetermined value TR (step S61). Then, when it is determined that the value is equal to or larger than the predetermined value TR, the storing process to the register group n is performed (step S62). That is, the newly generated key code with the on / off bit set to "1", the remaining gate time, and the corrected velocity are stored in one block of the register group n. At this time, the block used for storage is a block whose on / off bit is “0”. Next, a key-on output is performed (step S63). Here, "key-on output" refers to a series of processes for transmitting predetermined data (key code, velocity, etc.) to the tone generator 14 and starting sounding, and the same applies to the following. At this time, since the corrected velocity is output as the velocity, a sound corresponding to the key code is generated at the corrected velocity. This is a process corresponding to the case of the key 5 in FIG. Thereafter, the process proceeds to step S65.

On the other hand, if it is determined in step S60 that the key code is not a newly generated key code, the flow branches to step S65 without performing any processing because the key code has already been sounded. This is a process corresponding to the case of key 1 in FIG. If it is determined in step S61 that the remaining gate time is not greater than or equal to the predetermined value TR, "1" is set as the remaining gate time (step S64). Thus, the next time a timer interrupt occurs, the remaining gate time is decremented to zero in a timer interrupt processing routine to be described later, and a key-off output is performed to mute the sound being generated. this is,
This is processing corresponding to the case of key 4 in FIG. Thereafter, the process proceeds to step S65.

In step S65, the part number n is incremented, and it is checked whether the result is 5 or more, that is, whether the processing up to part 4 is completed (step S66). If it is determined that the difference is not more than 5, the process returns to step S55, and the same processing as described above is repeated. On the other hand, when it is determined that the number is 5 or more, that is, when it is determined that the processing up to Part 4 is completed, the process returns from the MIDI-IN processing routine and returns to the main routine.

(5) Part 1-4 Reading Process (FIGS. 9 and 10) The part 1-4 reading process is called periodically from the main routine. In this part 1-4 reading process, first,
The part number is initialized to "n = 1" (step S8)
0). That is, in the part 1 to 4 read processing, the read processing of the pattern data corresponding to each of the parts 1 to 4 is performed. Next, the step correction value SAn is read (step S81). That is, measure register B
RR and the contents of beat register BTR as RA
The corresponding correction data SAn is read from the step time correction data of M12. Since the step time correction data is stored in quarter note units, the same address as the value displayed on the bar / beat indicator 130 is used as the above address, and the lower address of the content of the beat register BTR is used. Bits are ignored.

Next, the correction data SAn is added to the content of the beat register BTR, and the beat register BTRn for part n is added.
(Step S82). Next, the result of the addition (contents of the part n beat register BTRn) is “0”.
It is checked whether it is smaller (step S83).
If it is determined that the value is smaller than “0”, the part n
"192" is added to the contents of the beat register BTRn and stored in the beat register BTRn for part n (step S).
84) Then, the contents of the bar register BRR are decremented and stored in the bar register BRRn for part n (step S85). Steps S84 and S85 above
Is converted so that the content of the beat register BTR obtained by the step time correction of the part n becomes positive. Thereafter, the flow branches to step S90.

If it is determined in step S83 that the addition result is not smaller than "0", it is checked whether the addition result (contents of the part n beat register BTRn) is "192" or more (step S86). ). here,
If it is determined that it is equal to or greater than "192", "192" is subtracted from the contents of the part n beat register BTRn and stored in the part n beat register BTRn (step S8).
7) Then, the contents of the bar register BRR are incremented and stored in the bar register BRRn for part n (step S88). Steps S87 and S88 above
When the content of the beat register BTR exceeds one bar (192 steps) due to the step time correction of the part n, the conversion is performed so as to fall within the range of one bar. Thereafter, the flow branches to step S90.

In the step S83, the addition result is "19".
2 or more, ie, “0 ≦ beat register B for part n”
When it is determined that the content of TRn <192 ”, the content of the bar register BRR is changed to the bar register BR for part n.
It is stored in Rn (step S89). In this case, the contents of the beat register BTRn for part n are the same as those set in step S82. Thereafter, the process proceeds to step S90.

When the step time correction is completed by the above-mentioned processing, unsound data is searched for from the pattern data of the part n (step S90). That is, among the pattern data included in the bar indicated by the contents of the bar register for part n BRRn, those having a step time smaller than or the same as the content of the beat register for part n BTRn are searched. Next, the key code (KCOD) in the searched pattern data and the gate time (GTI)
M) and velocity (VELO) are read (step S91).

Next, the corrected velocity of part n is generated (step S92). This processing is the same as that already described with reference to FIG. Next, the register group n corresponding to the part n is updated (step S9).
3). That is, the key code (KCOD), the gate time (GTIM), and the correction velocity (VLAn) are stored in one of the register groups n.

Next, it is checked whether the part n is on, that is, whether any of the part switches 139 to 142 corresponding to the part n is pressed (step S9).
4) If it is determined that the key is pressed, a key-on output is performed (step S95). As a result, the sound with the corrected step time and velocity is performed. On the other hand, if it is determined that the part switch has not been pressed, step S95 is skipped. Therefore, in this case, only the reading of the pattern data is performed.

Next, the part number n is incremented (step S96). If the result is not 5 or more, the process returns to step S81 to perform reading processing for the next part, and if it is 5 or more, the processing for all parts is completed. Upon recognizing that the part has been read, the routine returns from the part 1-4 reading processing routine and returns to the main routine.

(6) Part 1-4 Switching Process (FIG. 11) Next, the part switching process performed in step S43 of the panel control process routine will be described. This part switching process is a process of starting or stopping sound generation of the part when the part switches 139 to 142 are pressed. In the automatic performance apparatus according to the present embodiment, as described above, the pattern data of parts 1 to 4 are always read out, and whether or not sound is generated based on the read out pattern data is determined by the part switch. 139 to 142 are turned on.

FIG. 18 shows an outline of the operation when the part switch is turned on. FIG. 18 shows an operation state when the part switch n is turned on at time TB. The portion surrounded by a thick line indicates that pattern data is to be read, and the hatched portion therein indicates that the pattern data is to be read. Respectively indicates that sound is generated based on the pattern data.

In the example shown in FIG. 18, when the part switch n is turned on, the keys 1 and 2 are in the off state, so that no sound is produced. Key 3 and key 4 are on,
As for the key 3, the sound emission ends within a certain time TR after the ON change of the part switch n is detected. In other words, no sound is emitted because the remaining gate time is less than the predetermined time TR. Since the remaining gate time of the key 4 is equal to or longer than the predetermined time TR, sound generation is started.

By performing such a process, for example, a sound which should be sounded in response to the ON change of the part switch n but whose sound is completed in a short time, such as the key 3 in FIG. 18, starts sounding. Not done. There is no problem in terms of audibility even if no sound is assigned to the sound that disappears in such a short time. On the other hand, there is an advantage that the time required for the CPU 10 to perform the channel assignment processing is saved and the load on the CPU 10 is reduced.

In order to realize the above functions, in the part switching process, first, the part number is initialized to "n = 1" (step S100). Next, it is checked whether or not the event of the part switch of the part n has occurred (step S101). This is performed by checking whether the bit corresponding to the part switches 139 to 142 of the part n in the panel event map is “1”. If it is determined that there is no event, the process branches to step S108. On the other hand, if it is determined that there is an event of the part switch of part n, then it is checked whether or not the event is an ON event (step S102). This is performed by checking whether the bit corresponding to the part switches 139 to 142 of the part n in the new panel data is “1”.

If it is determined that the event is an ON event, the remaining gate time of the register group n is read (step S103). That is, the remaining gate time of the key code stored in the register group n in the key-on state is read. At this time, the corrected velocity is also read. Next, it is determined whether or not the remaining gate time is equal to or longer than a predetermined time TR (step S104). If it is determined that the remaining gate time is equal to or longer than the predetermined time, a key-on output is performed (step S105). At this time, the corrected velocity is also output. Thus, sound generation based on the pattern data of part n is started. This is a process corresponding to the case of the key 4 in FIG.

On the other hand, if it is determined that the remaining gate time is not longer than predetermined time TR, the remaining gate time of the key code is set to "0" (step S10).
6). Thus, the pronunciation is not started. By the processing of steps S104 to S106, a function is realized in which the sound is emitted if the remaining gate time is equal to or longer than the predetermined value TR, and the sound is suppressed if the remaining gate time is smaller than the predetermined value TR.

If it is determined in the event 102 that the event is an off event, a key-off output for the part n is performed (step S107). That is, a key-off output is performed for all key codes stored in the register group n in a key-on state. As a result, the sound generation of part n is stopped. Thereafter, the flow branches to step S108.

In step S108, the part number n is incremented. If the result is not 5 or more, the process returns to step S101 to perform switching processing for the next part, and if it is 5 or more, processing for all parts is completed. And returns from the part 1-4 switching processing routine to return to the main routine.

(7) Timer Interrupt Processing (FIG. 12) Next, a timer interrupt processing routine will be described. In this timer interrupt processing routine, when the interrupt signal from the timer 16 is C
It is activated by being supplied to the interrupt signal input terminal INT2 of the PU 10. Therefore, the timer interrupt processing routine is started at a time interval corresponding to one step time at the tempo set at that time.

In the timer interruption processing, first, it is checked whether or not the automatic performance flag is turned on (step S110). That is, it is checked whether or not the automatic performance device is in an automatic performance state. If it is determined that the automatic performance flag is ON, the content of the beat register BTR is incremented (step S111), and it is checked whether or not the result is "192" or more (step S112). Then, when it is determined that the value has become “192” or more, the beat register BTR is cleared to zero (step S113), and the bar register BRR is incremented (step S114). Step S1 above
If it is determined in step 12 that the number is not equal to or larger than "192", the processing in steps S113 and S114 is skipped. By the processing of the above steps S111 to S114, a function of being incremented in a state where the bar register BRR and the beat register BTR are connected at every step time is realized.

Next, the gate times of all parts are updated (step S115). That is, the remaining gate times included in the register groups of all parts other than “0” are decremented. As a result of this decrement, if there is a remaining gate time that has newly become zero, a key-off output is performed for a key code corresponding to the remaining gate time, and sound generation is stopped.

If it is determined in step S110 that the automatic performance flag is not on, it is recognized that automatic performance is not being performed, and only the gate times of all parts are updated. Thereafter, the routine returns from the timer interrupt processing routine and returns to the interrupted position.

As described above, in the present embodiment, the normalized pattern data is stored in the RAM 12 for only a few measures (for example, two measures). On the other hand, separately from the pattern data, fluctuation data for all measures, that is, step time correction data and velocity correction data are stored in the RAM 12. The step time correction data and the velocity correction data can be created, for example, from the difference between a performance pattern based on the normalized pattern data and a performance pattern actually performed by the player.

Then, the normalized pattern data is read out from the RAM 12 in accordance with the contents of the bar register BRR and the beat register BTR, and the step time correction data and the velocity correction data are read out. The correction is performed using the data and the velocity correction data, and sound is generated based on the corrected pattern data.

With this configuration, it is possible to wipe out the image of a mechanical performance pattern as seen in the sound generation based on only the normalized pattern data, and further, as the step time correction data and the velocity correction data, for example, By using the difference data between the performance pattern based on the pattern data and the performance pattern actually played by the player, an automatic performance pattern matching the period of human emotion can be realized. If the step time correction data and the velocity correction data are created using difference data from a performance pattern played by a specific musician, an automatic performance pattern of "anyone-like performance" can be obtained.

Further, unlike the related art, it is not necessary to create pattern data for all measures of one song in order to realize an automatic performance pattern that matches the cycle of human emotions.
There is an effect that, for example, an automatic performance pattern with good glue can be realized with a small capacity.

In the above description, “step time” and “velocity” have been described as parameters of fluctuation. However, the same effect as described above can be obtained for “gate time” by performing the same processing as described above. Obtainable.

Further, in the "other processing" (step S17) of FIG. 3, if the fluctuation of the "tempo speed" is reproduced, a more lively automatic performance can be realized. At this time, the tempo speed correction data is stored in advance with respect to a large number of measures, similarly to the correction data in FIGS. 15 and 16, and is switched according to the selected music or rhythm style.

In the present embodiment, pattern data of all parts is sequentially read out according to the contents of the bar register BRR and the beat register BTR, and performance data (key code, remaining gate time and velocity) is created from this, and The data is stored in the register group n. Of the performance data stored in the register group n, only performance data corresponding to the part specified by the part switch is generated. The contents of the register group n are updated by the timer interrupt processing according to the progress of the automatic performance independently of the presence / absence of sound generation.

When a new part is sounded during the automatic performance, even if the performance data stored in the register group n in the key-on state has already passed the sound generation start timing, the mute timing has not yet been reached. Regarding the sound, the pronunciation is started even if it is in the middle. As a result, it is possible to avoid a situation in which a sound to be originally uttered is not generated due to a slight shift (delay) of the instruction timing of the part switches 139 to 142 of the player. The performance can be started completely.

When it is instructed by the part switches 139 to 142 that a predetermined part should be turned off, all the sounds being produced by the parts corresponding to the part switches 139 to 142 are immediately stopped. You. This is realized by replacing the envelope with a release envelope that is much faster than those envelopes and terminating the sound, for example, even when a tone with a long sustain or a piano sound is damped on.

As described above, the fact that the automatic performance of the specific part can be started or ended at the timing desired by the player means that the timing of the specific part can be reduced at a timing finer than the timing of sound generation or mute based on the pattern data. This means that an automatic performance can be performed or stopped, and there is an effect that a new performance form becomes possible.

When a new part is instructed to sound, the mute timing has not yet been reached, but if the remaining sounding time (remaining gate time) is smaller than a predetermined value TR, no sound is produced, and the sound is not generated. Only when it is pronounced.

Thus, a sound that does not affect the sense of hearing, such as being muted immediately after being sounded, is not sounded from the beginning, so that the load on the CPU is reduced. Therefore, the CPU can execute other processing, and a more efficient automatic performance device can be realized.

[0121]

As described in detail above, according to the present invention,
It is possible to provide an automatic performance device that can easily realize an automatic performance pattern that matches a human emotion cycle with a small memory capacity. Further, it is possible to provide an automatic performance device that can play or stop a specific part even during the automatic performance.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an automatic performance device according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of an operation panel used in the embodiment of the present invention.

FIG. 3 is a flowchart (main routine) illustrating an operation of the exemplary embodiment of the present invention.

FIG. 4 is a flowchart (MIDI-IN interrupt processing routine) illustrating the operation of the embodiment of the present invention.

FIG. 5 is a flowchart (panel control processing routine) illustrating an operation of the exemplary embodiment of the present invention.

FIG. 6 is a flowchart (MIDI-IN processing routine (No. 1)) illustrating an operation of the exemplary embodiment of the present invention.

FIG. 7 is a flowchart (MIDI-IN processing routine (No. 2)) showing the operation of the embodiment of the present invention.

FIG. 8 is a flowchart (corrected velocity generation routine) illustrating an operation of the exemplary embodiment of the present invention.

FIG. 9 is a flowchart (part 1 to 4 reading processing routine (part 1)) illustrating an operation of the embodiment of the present invention.

FIG. 10 is a flowchart (part 1 to 4 read processing routine (part 2)) illustrating the operation of the embodiment of the present invention.

FIG. 11 is a flowchart (part 1 to 4 switching processing routine) showing the operation of the embodiment of the present invention.

FIG. 12 is a flowchart (timer interrupt processing routine) illustrating an operation of the exemplary embodiment of the present invention.

FIG. 13 is a diagram showing a configuration of a reception buffer used in the embodiment of the present invention.

FIG. 14A is a diagram illustrating a configuration of a register group n used in the embodiment of the present invention, and FIG. 14B is a diagram illustrating a configuration of pattern data used in the embodiment of the present invention;

FIG. 15 is a diagram for explaining step time correction data used in the embodiment of the present invention.

FIG. 16 is a diagram for explaining velocity correction data used in the embodiment of the present invention.

FIG. 17 is a diagram for explaining an operation of a tone generation process when a chord changes in the embodiment of the present invention.

FIG. 18 is a diagram illustrating an operation of a sound generation process when a part switch is turned on in the embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 CPU 11 ROM 12 RAM 13 Operation panel 14 Musical sound generator 15 Speaker system 16 Timer 17 MIDI controller 18 FD controller 19 Floppy disk drive 30 System bus 130 Bar / beat display 131 Code display 132 Tempo speed display 133 Incrementer 134 Stop switch 135 Play / pause switch 136 FF switch 137 REW switch 138 Repeat switch 139 Part 1 switch 140 Part 2 switch 141 Part 3 switch 142 Part 4 switch 143 to 150 LED display

Claims (2)

[Claims] 1. A pattern data storage means for storing pattern data of a plurality of parts, a time management means for managing a time progress of an automatic performance, and a pattern data storage means based on the contents of the time management means. Pattern data reading means for sequentially reading pattern data of all parts; performance data storage means for storing performance data of all parts created based on the pattern data read by the pattern data reading means; Updating means for updating the performance data stored in the means in accordance with the progress of the automatic performance, instructing means for instructing the sounding of each part, and sounding means for sounding only the part instructed by the instructing means. The sounding means responds to a part when a sounding instruction of a new part is issued by the instruction means. Automatic performance apparatus characterized by pronounced on the basis of the performance data in the performance data storage means that. 2. The sounding means according to claim 1, wherein when a sounding instruction is issued for a new part, the sounding data is newly generated only when the remaining sounding time of the performance data stored in said performance data storage means is longer than a predetermined value. 2. The automatic performance apparatus according to claim 1, wherein the automatic performance is pronounced.