JPH0651762A - Automatic playing device - Google Patents

Abstract

PURPOSE:To update musical performance data simultaneously with an automatic musical performance based upon the performance data by providing a buffer storage means for sequentially storing the performance data outputted by a musical performance means. CONSTITUTION:Specific storage areas in a RAM 5 are used as a performance data memory area for storing performance data of 16 tracks and a buffer track area for 16 tracks which is used when the performance data are edited. A key event generated by operation on a keyboard 1 is converted by a key process routine into a MIDI(digital interface of a musical instrument) event, which is stored as a MIDI event corresponding to a keyboard channel in a MIDI buffer. The event whose channel number matches a sound recording channel is selected among MIDI events stored in the MIDI buffer and written in the track corresponding to the sound recording channel in the buffer track area in the RAM 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic performance device having a performance data recording function and an automatic performance function based on performance data.

[0002]

2. Description of the Related Art A recording function for creating performance data in response to an operation of a performance operator such as a keyboard and sequentially writing the performance data in a storage means such as a RAM (random access memory), and sequentially reading and reading the performance data stored in the RAM. 2. Description of the Related Art There is known an automatic performance device having both a reproduction function of automatically performing performance according to the performance data.

[0003]

By the way, when the performance data is edited by the conventional automatic performance device described above, the performer records the performance data of a desired music piece in the RAM and then performs the performance in the RAM. It is necessary to confirm whether the desired automatic performance is performed by the data, and if the desired automatic performance is not performed, the operation of rewriting the corresponding performance data in the RAM must be repeated, and the performance data is efficiently edited. There was a problem that I could not. 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 that can perform automatic performance based on performance data and at the same time update the performance data.

[0004]

The present invention has performance data storage means for storing performance data, and performance operators.
Performance means for outputting performance data in response to an operation on the performance operator, reproducing means for sequentially reading out the performance data from the performance data storage means, performance data read by the performance means and performance output by the performance means. Musical sound forming means for forming musical tones according to data, buffer storage means for sequentially storing performance data read by the reproducing means and performance data output by the performance means, and performance data stored in the buffer storage means It is characterized by comprising a writing means for writing in the performance data storage means.

[0005]

According to the above construction, the performance data read from the performance data storage means and the performance data by the operation of the performance operator are used for controlling the automatic performance and stored in the buffer storage means. Then, the contents of the performance data storage means are rewritten by the performance data stored in the buffer storage means.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. <A> Configuration of Embodiment FIG. 1 is a block diagram showing the configuration of an automatic musical instrument according to an embodiment of the present invention. This automatic performance device has the following functions. Further, as will be shown below, in this automatic performance device, all the operation events of the performance operators, the performance data read from the storage means, etc. are converted into MIDI events and handled. (A) An event generating function for generating a MIDI event in response to the operation of the performance operator (b) A reproduction function for reading the performance data from the storage unit and outputting it as a MIDI event (c) A MIDI event generated by the operation of the performance operator and An automatic performance function for performing a performance by a MIDI event read from the storage means (d) A recording function for writing the MIDI event generated by the operation of the performance operator and the MIDI event read from the storage means into the storage means as performance data (f ) Function of generating metronome sound at specified tempo Further, this automatic performance device can perform the following specification with respect to the functions (a), (b) and (d). (F) Designation of a channel number (hereinafter referred to as a keyboard channel) to which a MIDI event generated by the operation of the performance operator is assigned (g) Designation of a channel number (hereinafter referred to as a reproduction channel) of a MIDI event to be reproduced from the storage means (H) Designation of MIDI event channel number (hereinafter referred to as recording channel) to be recorded as performance data in the storage means

The respective constituent elements of the present apparatus described below are used as means for realizing the above respective functions. In FIG. 1, reference numeral 1 is a keyboard as a performance operator. Reference numeral 2 denotes a key interface, which detects a key depression / key release operation performed on each key of the keyboard 1 and outputs it as a key event. Reference numeral 3 denotes a CPU (central processing unit), which controls the entire apparatus including the control related to the above functions (a) to (d). In addition, 4 is a ROM (Read Only Memory),
In addition to various control programs executed by the CPU 3, control information necessary for control is stored. Further, 5 is a RAM, which is used as a storage area for control data used for control performed by the CPU 3. A specific storage area in the RAM 5 is used as a performance data memory area for storing performance data for 16 tracks and a buffer track area for 16 tracks used when editing the performance data. Reference numeral 6 denotes a MIDI interface, which transmits a MIDI event reproduced by the automatic performance device to an external device and receives a MIDI event supplied from the external device. Reference numeral 7 denotes an operation panel provided with various operators including performance operators such as a tone color designation switch and a display. Reference numeral 8 denotes an operation panel interface, which detects an operation performed on each operator of the operation panel 7 and outputs it as a panel event, and
Display control of each display unit of the operation panel 7 is performed according to a command from the CPU 3. Further, 9 is a tone synthesis circuit for synthesizing tone signals, and 10 is a sound system for producing the tone signals output by the tone synthesis circuit 9 as tones. B
1 is a MIDI event bus, CPU3, MID
The I interface 6, the musical sound synthesizing circuit 9 and the sound system 10 are connected to each other and used as a communication path for exchanging MIDI events between these elements. B2 is a data bus, which connects the key interface 2, the CPU 3, the ROM 4, the RAM 5, the operation panel interface 8 and the tone synthesis circuit 9 to each other, and is used as a communication path for exchanging data between these elements. It For example, the key depression information output from the key interface 2 is taken into the CPU 3 via the data bus B2, converted into MIDI data by the CPU 3, and then output to the tone synthesis circuit 9 via the MIDI event bus B1.

FIG. 2 is a plan view showing the operation panel 7.
In FIG. 2, reference numeral 21 denotes a display for displaying the currently set tone color number. 22 is a tone color setting section,
It comprises a ten-key pad for inputting a tone color number, an increment key for increasing / decreasing the input tone color number, and a decrement key. Reference numeral 23 is a metronome switch for instructing the generation of a metronome sound. When the metronome switch 23 is turned on, the LE above it
The D lamp 24 lights up. Reference numeral 31 is a display device for displaying the currently set tempo. Reference numerals 32 and 33 are an increment key and a decrement key for instructing increase / decrease of the currently set tempo. Reference numeral 41 is a record switch, which is pressed when instructing to start recording and setting the above-described recording channel. 42 is a start switch for instructing the start of automatic performance, and 43 is a stop switch for instructing the stop of automatic performance. BM _{1 to} BM ₁₆ are keyboard channel switches, and are used for setting the above-mentioned keyboard channels. The setting status of the keyboard channel is LED lamp LM
Displayed by _{1 to} LM ₁₆ . BQ _{1 to} BM ₁₆ are sequencer channel switches, which are used for setting the above-mentioned playback channel and recording channel. LED lamps LQ _{1 to} L are used to set the playback and recording channels.
Displayed by Q ₁₆ . Reference numeral 51 is a dial, which is used as an operator for increasing and decreasing the set values of parameters such as volume and tone color. BC _{1 to} BC ₅ are mode designation switches, and are used as operators for designating parameters to be increased / decreased by operating the dial 51. The LED lamps CS _{1 to} CS ₅ indicate which parameter is increased or decreased by the dial operation. Reference numeral 61 is a display device for displaying timbre, volume and the like. Reference numeral 62 is an increment key, and 63 is a decrement key, which, like the dial 51, is used as an operator for increasing or decreasing the set values of parameters such as volume and tone color. 52
Is a dial priority switch. During reproduction, when the dial priority switch 52 is in the ON state, the parameter control such as volume and tone color by the performance data read from the RAM 5 is invalidated, and the parameter control by the operation of the dial 51 is preferentially executed. Further, when the dial priority switch 52 is in the off state, both the parameter control by the performance data read from the RAM 5 and the parameter control by the operation of the dial 51 are performed.

Next, control registers and flags constructed by using the storage area in the RAM 5 will be described below. Start flag START: This start flag STA
The RT is set to "1" by pressing the start switch 42. When START = "1", R
The performance data is read from the performance data memory area of the AM5 and the automatic performance is performed. Record flag REC: This record flag REC is
By pressing the record switch 41 and the start switch 42 at the same time, "1" is set. As a result,
A MIDI event is recorded. MIDI buffer: This MIDI buffer stores MIDI events caused by factors such as keyboard performance, reception of MIDI signals from external devices, operation of the operation panel, reading of performance data from the performance data memory area of the RAM 5. . Channel status register ST (k) (k = 1 to 2
2): This channel status register ST (k) (k
= 1 to 22) stores information indicating the tone generation states of 22 tone generation channels in the tone synthesis circuit 9. That is, if the tone generation channel k is an empty channel, ST
(K) = “0”, and if the sounding channel k is in the note-on state, ST (k) = “1”, and the sounding channel k
Is set to the note-off state, ST (k) = “2” is set. Metronome flag MM: This metronome flag MM
When "1" is set to, the metronome sound is produced. Tempo register TEMPO: This tempo register TEM
A metronome sound is generated each time the time corresponding to the contents of the PO has elapsed. Metronome count register MCNT: This metronome count register MCNT is used as a timekeeping means for controlling the sounding timing of the metronome sound, and the content is decremented every time the interrupt processing is executed at a constant time interval. It Keyboard channel register KBSW (k) (k = 1 to
LAST) and channel number register LAST: keyboard channel register KBSW (k) (k = 1 to LAS
T) is a variable-length register that stores the keyboard channel number. The number of keyboard channels stored in the keyboard channel register KBSW is stored in the channel number register LAST. Mode register MODE: This mode register MODE
In the field, information corresponding to the type of parameter to be set is written. Tone color number register TC / SEL: The tone color number input by the tone color setting unit 22 is written in the tone color number register TC / SEL. Event register EV: The MIDI event fetched from the MIDI buffer is written in this event register EV. MIDI channel register MCH: The channel number of the MIDI event fetched from the MIDI buffer is written in this MIDI channel register MCH. Parameter setting register VALUE (i, j) (i = 1
˜5, j = 1 to 16): Each parameter setting register VA
Each channel event applied to each tone generation channel j of the tone synthesis circuit 9 is stored in LUE (i, j). That is, the channel pressure event applied to the sounding channel j is stored in VALUE (1, j), and VA
Program change events are stored in LUE (2, j), PAN events for sound image position control are stored in VALUE (3, j), and events for reverberation effect control are stored in VALUE (4, j). Is stored, VALU
An event for vibrato control is stored in E (5, j). Velocity offset register VOFST (k) (k =
0-127): Velocity offset register VOFS
In T (k), the value of the velocity offset applied when forming the tone of tone color number k is stored. Relative value register REL: This relative value register REL stores data representing the amount of change when the parameter is increased or decreased by operating the dial 51. Note code register NC: The note code included in the note-on event extracted from the event register EV is written in the note code register NC. Note velocity register NV: The note velocity included in the note-on event fetched from the event register EV is written in the note velocity register NV. Sound generation channel assignment register ACH: The sound generation channel assignment register ACH has a tone synthesis circuit 9 for generating sound.
The number of the sounding channel of is written. Note code register STNC (k) for each pronunciation channel
(K = 1 to 22): The note code register for each tone generation channel STNC (k) stores the note code of the tone generated by the tone generation channel k. MIDI channel register for each sound channel AMC (k)
(K = 1 to 22): The MIDI channel register AMC (k) for each sounding channel stores the channel number of the note-on event sounded by the sounding channel k. Record switch flag RECSW: This record switch flag RECSW holds "1" while the record switch 41 is pressed. Recording flag RSW (k) (k = 1 to 16): These recording flags RSW (k) (k = 1 to 16) are used for each MIDI.
It is a flag that stores a value indicating whether the channel k is a recording channel. When RSW (k) = "1", the MIDI channel k is a recording channel. Reproduction flag PSW (k) (k = 1 to 16): These reproduction flags PSW (k) (k = 1 to 16) correspond to each MIDI.
It is a flag that stores a value indicating whether or not the channel k is a reproduction channel. When PSW (k) = “1”, the MIDI channel k is a reproduction channel. Reception flag RC (k) (k = 1 to 16): These reception flags RC (k) (k = 1 to 16) indicate whether or not to receive a MIDI event from an external device for each MIDI channel k. It is a flag that stores the indicated value. RC
If (k) = “1”, MI of MIDI channel k
Reception of DI events is permitted. Duration register DT (k) (k = 1 to 16):
These duration registers DT (k) (k = 1 to
At 16), the duration data read from each track k in the performance data memory area at the time of reproduction is written.

<B> Operation of the Embodiment <Outline of Operation> FIG. 3 illustrates the main routines executed by the CPU 3 and the relationship between these routines. 4 to 23 are flowcharts showing specific processing contents of each routine executed by the CPU 3, FIG. 4 is a flowchart of the main routine, and FIGS.
FIG. 20 is a flowchart of each routine executed along with the execution of the main routine, and FIGS. 21 to 23 are flowcharts of each routine executed by the CPU 3 as an interrupt process. The specific processing contents of each of these routines will be described in detail in the next section <Detailed Operation Description>, and an outline of the operation of this automatic performance device will be described below with reference to FIG.

(1) Instrument mode (START = "0" R
EC = “0”) In this musical instrument mode, a performance is performed based on the MID event generated by the operation of the performance operators such as the keyboard 1 and the operators on the operation panel 7, and the MIDI event received from the external device. A key event generated by operating the keyboard 1 is converted into a MIDI event by the key processing routine and stored in the MIDI buffer as a MIDI event corresponding to the keyboard channel. The panel event generated by the operator of the operation panel 7 is MIDI-processed by a routine corresponding to each panel event such as an increment processing routine and a tone color setting processing routine.
M converted to event and corresponding to keyboard channel
It is stored in the MIDI buffer as an IDI event.
Further, MIDI events received from the external device are stored in the MIDI buffer by the external MIDI processing routine. The MIDI events accumulated in the MIDI buffer are sequentially taken out by the MIDI processing routine, and M
The note event in the IDI event is delivered to the note event processing routine, and the channel event is delivered to the channel event processing routine. Then, the note event processing routine generates parameters based on the note event, and the channel event processing routine generates parameters for tone color setting, volume setting, etc. based on the channel event, and supplies the parameters to the tone synthesis circuit 9, respectively. To be done.

(2) Playback mode (START = "1",
REC = “0”) A reproduction processing routine is executed as an interrupt process every time a fixed time elapses, and the performance data is sequentially read out from the track corresponding to the reproduction channel in the performance data memory area in the RAM 5, Is written in the MIDI buffer as a MIDI event corresponding to. Also, keyboard performance, operation of the operation panel 7, MIDI from an external device
When there is a signal reception, etc., M generated by them
IDI events are also written to the MIDI buffer. Then, as in the case of the musical instrument mode, MIDI events are sequentially read from the MIDI buffer, and the musical tone synthesis circuit 9 is controlled.

(3) Recording / reproducing mode (START =
“1”, REC = “1”) The recording processing routine is executed as the MIDI processing routine is executed. As a result, of the MIDI events stored in the MIDI buffer, the one whose channel number matches the recording channel is selected and written in the track corresponding to each recording channel in the buffer track area in the RAM 5. The contents of the buffer track area are transferred to the corresponding tracks of the performance data memory area by pressing the stop switch.

<Detailed Description of Operation> When a power switch (not shown) of this automatic musical instrument is turned on, the CPU 3
Executes the main routine whose flow is shown in FIG. First, in step S401, an initial value is written in a storage area for control data in the RAM 5. Next in step S40
2, the MIDI processing routine whose flow is shown in FIG. 5 is started. Then, in the step S501, M
Determine if there is a MIDI event in the IDI buffer. If the result of this determination is "YES", then step S
Execute the processing after 502 and return to the main routine,
If "NO", the process returns to the main routine without performing any processing. Next, returning to the main routine, the process proceeds to step S403 to start the external MIDI processing routine whose flow is shown in FIG. Then, in step S601, M
MI from an external device via the IDI interface 6
It is determined whether a DI event has been received. If the result of this determination is "YES", the processing from step S602 is executed and the process returns to the main routine, and if "NO", no process is performed and the process returns to the main routine. Next, returning to the main routine, the process proceeds to step S404, and the key processing routine whose flow is shown in FIG. 7 is started. Then, in step S701, the output state of the key interface 2 is scanned. Next, proceeding to step S702, it is determined whether or not a key event indicating that a key on the keyboard 1 has been operated has been detected via the key interface 2. If this determination result is "YES", step S703 is executed and the process returns to the main routine, and if "NO", step S703.
Return to the main routine without executing. Next, when returning to the main routine, the flow proceeds to step S405, and tone generation channel processing is executed. This pronunciation channel processing will not be detailed, but
Among the sound generation channels of the sound synthesis circuit 9, the number k of the sound generation channel in which the level of the sound being generated is below a predetermined value is detected, and the channel status register ST (k) corresponding to the detected sound generation channel is detected. Information "0" which means an empty channel is written. Next, proceeding to step S406, the panel processing routine whose flow is shown in FIG. 8 is started. Then, in step S801, the output state of the operation panel interface 8 is scanned. Next, proceeding to step S802, it is determined whether or not a panel event indicating that an operator on the operation panel 7 has been operated is detected via the operation panel interface 8. If the result of this determination is "YES", the flow proceeds to step S803 to execute the routine corresponding to the detected panel event and returns to the main routine, and if "NO" returns to the main routine without going through step S803. Then, thereafter, the CPU 3 performs steps S402 to S4.
Repeat 06.

Every time a certain period of time elapses, the CPU 3 interrupts the process being executed at that point and executes the interrupt process routine shown in FIG. First, step S2101.
Then, the information corresponding to the disapproval of interruption is written in the flag for interruption control so as not to accept other interruption requests. Next, proceeding to step S2102, it is determined whether or not the content of the metronome flag MM is "1". If the result of this determination is “YES”, then the operation proceeds to step S2103, and FIG.
Execute the metronome processing routine whose flow is shown in 2.
It proceeds to step S2104. On the other hand, step S2102
If the result of the determination is “NO”, step S2103 is not executed and the process proceeds to step S2104. Then step S
In step 2104, it is determined whether the automatic performance is being performed. If the automatic performance is being performed, the process advances to step S2105 to execute the reproduction processing routine whose flow is shown in FIG. 23, and then advances to step S2106. On the other hand, if the automatic performance is not being performed, step S2105 is not executed and the process proceeds to step S2106. Next, proceeding to step S2106, information corresponding to interrupt permission is written in the interrupt control flag. And C
The PU 3 ends this interrupt processing routine and restarts the interrupted processing.

(1) When the instrument mode initialization process (step S401 of the main routine) is executed, "0" is written in both the start flag START and the record flag REC, and the operation mode of this automatic musical instrument is the instrument mode. Becomes The operation of the automatic musical instrument in the musical instrument mode will be described below.

Keyboard Channel Setting In this automatic performance device, a key event detected from the keyboard 1 and a panel event generated by operating the operation panel 7 are converted into MIDI events corresponding to the keyboard channel and handled. When performing the keyboard, the performer uses the keyboard channel designating switch BM ₁
The switch corresponding to the desired channel number in BM ₁₆ is pressed to set the keyboard channel. When the keyboard channel switch is operated,
The panel event corresponding to the operation is detected by the operation panel interface 8. As a result, when the process proceeds from step S406 of the main routine to step S802 of the panel processing routine, the determination result is "YE.
S ”, and the process proceeds to step S803. Then, in step S803, a keyboard channel switch processing routine whose flow is shown in FIG. 9 is executed. First, in step S901, it is determined whether or not another keyboard channel designating switch is depressed in addition to the currently pressed keyboard channel designating switch. 1 performer
If only one keyboard channel designation switch BM _k is pressed, the determination result of step S901 is “NO”.
It becomes proceeds to step S902, the turned off all the LED lamp LM ₁ to L m ₁₆ for the specified keyboard channel. Next, proceeding to step S903, "1" is written in the channel number register LAST. Next, among the keyboard channel designation registers KBSW (i) (i = 1 to NMAX), the register KBSW (LAST) designated by the channel number register LAST (KBSW in this case)
(1)) to write the number k of the keyboard channel designated switch BM _k which has been pressed. In this way, the channel number k is set as the keyboard channel number. Next, in step S906, the LED lamp BM _k corresponding to the set keyboard channel number _k.
Light up. Then, the process returns to the main routine via the panel processing routine.

Further, in this automatic performance device, a plurality of MIDI channels can be set as keyboard channels. In this case, the performer depresses the first keyboard channel designating switch and then depresses the second keyboard channel designating switch before releasing the finger from the switch. In this case, the keyboard channel switch processing routine is executed as described above, so that the keyboard channel number corresponding to the first keyboard channel designating switch is first registered in the register KBSW.
It is written in (1). After that, when the process goes to the keyboard channel switch processing routine, the second keyboard channel designating switch is pressed, so the result of the determination in step S901 is "YES" and step S901.
In step 904, the channel number register LAST is incremented. Then, in step S905, the number of the second keyboard channel is set in the register KBSW (L
AST) (KBSW (2) in this case). Then, among the LED lamps BM _k (k = 1 to 16), the LED lamps corresponding to the contents of the registers KBSW (1) and KBSW (2) are turned on (step S80).
6) Return to the main routine through the panel processing routine. Furthermore, if there is a channel number to be set as a keyboard channel, the performer sequentially inputs the desired channel number by pressing the new keyboard channel specifying switch before releasing the keyboard channel specifying switch currently being pressed. To do. As a result, the same processing as described above is repeated, all keyboard channel numbers are written in the keyboard channel designation register KBSW (k) (k = 1 to LAST), and the LED lamps corresponding to those channel numbers are turned on. To do.

Tone setting by tone setting section 22 When the performer operates the ten keys or increment / decrement keys in the tone setting section 22 to input a tone number, when the panel processing routine is started via the main routine, the step In S803, FIG.
A tone color setting switch processing routine showing a flow of 0 is executed. First, the flow proceeds to step S1001, the turns off the LED lamps corresponding to the content of the mode register MODE at that time of the LED lamp CS ₁ to CS ₅ for mode display. Next, in step S1002, information "0" is written in the mode register MODE. Next, proceeding to step S1003, the timbre number input by the timbre setting unit 22 is written in the timbre number register TC • SEL. Next, in step S1004, the display 21 displays the contents of the tone color number register TC / SEL. Next, proceeding to step S1005, all keyboard channels set at that time, namely, keyboard channel registers KBSW (k) (k = 1 to LAST).
A program change event (tone color setting event) including the tone color number set in the tone color number register TC.SEL is created for each MIDI channel set to 1. and each is written in the MIDI buffer as an internal MIDI event. As a result, step S402 of the main routine
When the process proceeds to the MIDI processing routine via, the determination result of the step S501 becomes “YES”, and the step S501
Proceed to 502. Then, from the MIDI buffer, the internal MI
The DI event is taken out and written in the event register EV, and the channel number of the taken out internal MIDI event is written in the MIDI channel register MCH.
Next, in step S503, the event register EV
It is determined whether the event stored in is a note event. If the event written in the event register EV in step S502 is a program change event, the determination result in step S503 becomes "NO" and the process proceeds to step S505. Then, the channel event processing routine whose flow is shown in FIG. 11 is executed.

First, in step S1101, the mode number corresponding to the event set in the event register EV is written in the mode register MODE. When a program change event designating a tone color number is set in the event register EV, "0" is written in the mode register MODE. Next, step S110.
2, the number set in the mode register MODE is within the defined predetermined range (1 to 1 in the present embodiment).
It is determined whether the number is 5). In this case, the number "0" is out of this defined range, so the result of the determination in step S1102 is "NO" and step S1.
Proceed to 104. Then, the CPU 3 sends the MIDI event set in the event register EV, that is, the program change event created by the execution of the tone color setting routine in this case, to the musical tone synthesis circuit 9 via the MIDI event bus B1. Here, the tone synthesis circuit 9
Has a storage area for storing control parameters such as tone color and effect for each MIDI channel. The program change events received from the CPU 3 are sorted according to their MIDI channels and stored in the corresponding storage areas. When step S1104 of the channel event processing routine is completed, the process returns to the MIDI processing routine and proceeds to step S506, where the content of the record flag REC is "1".
Determine whether or not. In the case of the instrument mode, step S50
The determination result of 6 is "NO", and the process returns to the main routine.

When a plurality of keyboard channels are set, by executing the tone color setting processing routine,
A program change event corresponding to each keyboard channel is written in the MIDI buffer (step S1005 of the tone color setting processing routine). Each program change event written in the MIDI buffer is then taken into the event register EV every time the MIDI processing routine is executed (step S502), and the channel event processing routine is executed, so that the tone synthesis circuit 9 is executed. Is sent (step S1104). In this way, the tone color input by the tone color setting unit 22 is set for all keyboard channels.

Various Parameter Settings by Dial 51 In this automatic performance device, by operating the dial 51, it is possible to increase or decrease the numerical values of the control parameters such as the volume, tone color number, and effect set for each MIDI channel. it can. Hereinafter, this operation will be described.

A. Volume setting When setting the volume by operating the dial 51,
The performer first turns on the volume switch BC ₂ . As a result, when the CPU 3 proceeds to the panel processing routine via the main routine, the step S80 is executed.
3, the volume switch processing routine whose flow is shown in FIG. 12 is executed. First, the flow proceeds to step S1201, turns off the LED lamps corresponding to the content of the mode register MODE at that time of the LED lamp CS ₁ to CS ₅ for mode display. Then step S12
In step 02, information "1" corresponding to the volume setting mode is written in the mode register MODE. Next, proceeding to step S1203, the relative value register REL is set to "0".
Write. Next, in step S1204, it is determined whether the content of the channel number register LAST is "1". If this determination result is “YES”, that is, if the number of keyboard channels is 1, step S12
Go to 05. Then, the parameter setting register VALUE (i, j) (i = 1 to 5, j = 1 to 1 at that time)
16), the mode number i corresponds to “1”, and
Channel number j is the first keyboard channel KBS
Register VALUE (1, KBSW corresponding to W (1)
The contents of (1)) are displayed on the display 61. Then, the process returns to the main routine via the panel processing routine. On the other hand, if the determination result in step S1204 is “NO”,
That is, when a plurality of keyboard channels are set, the process proceeds to step S1206 and the relative value register RE
The content "0" of L is displayed on the display 61, and the process returns to the main routine through the panel processing routine.

Next, the performer operates the dial 51 to set a desired volume. Here, when the player turns the dial 51 in the direction of increasing the volume, the increment processing routine shown in FIG. 13 is executed in step S803 of the panel processing routine. First, in step S1301, it is determined whether the content of the mode register MODE is "0". In this case, since the information "1" corresponding to the volume setting mode is set in the mode register MODE, the determination result of step S1301 becomes "NO" and the process proceeds to step S1302.
The content of the relative value register REL is incremented. Next, proceeding to step S1303, the initial value "1" is set in the variable register i. Next, proceeding to step S1304, the parameter setting register VALUE at that point
Of (i, j) (i = 1 to 5, j = 1 to 16), the mode number i is the mode register MODE (in this case, MODE).
= “1”) and the channel number j is the keyboard channel KBSW (i) (KBSW in this case).
Register VALUE (1, KBSW) corresponding to (1))
(1)) is incremented. Here, before the increment is done, the register VALUE (1, KBSW
When the volume value set in (1)) is already the upper limit value of the volume, the volume value is not incremented. Next, proceeding to step S1305, the parameter setting register VALUE (1, KBSW
The channel value event (volume control event) of the MIDI channel designated by the first keyboard channel register KBSW (1) is created using the volume value set in (1)), and the internal MIDI is generated.
Write to the MIDI buffer as an event. Next, proceeding to step S1306, the variable register i is incremented. Next, in step S1307, it is determined whether the content of the variable register i (i = “2” in this case) is larger than the content of the channel number register LAST. If the result of this determination is "YES", then step S1308.
Proceed to. On the other hand, the determination result of step S1307 is "N
If “O”, that is, if the content of the variable register i is equal to or less than the number of keyboard channels stored in the channel number register LAST, the process returns to step S1304, and the parameter setting register VALUE for the unprocessed second keyboard channel. The volume value stored in (1, KBSW (2)) is incremented (step S
1304), a channel pressure event corresponding to the second keyboard channel is created based on the new volume value and held as an internal MIDI event (step S1305). Then, the variable register i is incremented (step S1306), and i> LAST.
It is determined whether or not (step S1307). In this way, steps S1304 to S1307 are repeated until the determination result of step S1307 becomes “YES”, the volume value is updated for all the set keyboard channels, and a channel pressure event based on the new volume value is created. Write to MIDI buffer. When the result of the determination in step S1307 is "YES" and the flow proceeds to step S1308, it is determined whether or not the number of keyboard channels stored in the channel number register LAST is one. If the result of this determination is “YES”, the flow proceeds to step S1309, and the mode register MO
Display the contents of the parameter setting register VALUE (MODE, KBSW (1)) corresponding to the mode specified by DE (volume setting mode in this case) and corresponding to the first keyboard channel KBSW (1) The screen is displayed on 61 and the process returns to the main routine through the panel processing routine. On the other hand, if the decision result in the step S1310 is "NO", that is, if the number of keyboard channels is "2" or more, the contents of the relative value register REL are displayed on the display 61, and the main processing is performed through the panel processing routine. Return to routine. In this case, the contents of the relative value register REL displayed on the display unit 61 represent the relative change amount (in this case, the increase amount) of the volume value for all the set keyboard channels.

On the other hand, when the dial 51 is rotated in the volume decreasing direction, the decrement processing routine is executed via the panel processing routine. The flowchart of the decrement processing routine is omitted. When the decrement processing routine is executed, the relative value register REL is decremented (corresponding to step S1304), the volume value is decremented for all the set keyboard channels (corresponding to step S1304), and the channel pressure event is created (step S1305). Equivalent) is done. Then, as in the case of the increment processing routine described above, the absolute value of the volume value (corresponding to step S1309) or the decrease REL of the volume value for all keyboard channels is displayed (corresponding to step S1310).

As described above, by rotating the dial 51, a channel pressure event is created and written in the MIDI buffer as an internal MIDI event. As a result, when the process proceeds to the MIDI processing routine via step S402 of the main routine, the determination result of step S501 becomes "YES", and step S5
Go to 02. And from the MIDI buffer to the internal MID
The I event (in this case, the channel pressure event created in the increment processing routine or the decrement processing routine) is extracted and written in the event register EV, and the channel number of the extracted MIDI event is written in the MIDI channel register MCH. Next, in step S503, it is determined whether the event stored in the event register EV is a note event. In this case, since the channel pressure event written in the event register EV is a channel event, the determination result of step S503 is "N".
O ”, and the process proceeds to step S505. Then, the channel event processing routine is executed.

First, in step S1101, the mode number corresponding to the event set in the event register EV, that is, the mode number "1" corresponding to the volume setting mode is written in the mode register MODE. Next, the process proceeds to step S1102, and the mode register MODE
The mode number set to is the defined predetermined range "1"
~ It is determined whether the number is within "5". In this case, the mode number "1" is within this defined range, so the result of the determination in step S1102 is "YES", and the flow advances to step S1103. Then, among MIDI events such as MIDI events supplied from the outside caused by causes other than dial operation, a channel event of a type designated by the mode register MODE (when MODE = “1”, a channel pressure event). ) Is taken out and is written in the register VALUE (MODE, MCH) as a channel event to be newly set. Next, proceeding to step S1104, the channel pressure event held in the event register EV is sent to the tone synthesis circuit 9 via the MIDI event bus B1. As a result, the volume of the corresponding tone generation channel in the tone synthesis circuit 9 is set in accordance with the supplied channel pressure event. When step S1104 of the channel event processing routine ends, MIDI
Returning to the processing routine, the process proceeds to step S206, and it is determined whether the content of the record flag REC is "1". If the determination result is "NO", the process returns to the main routine.

When a plurality of keyboard channels are set, the dial is rotated to register all the keyboard channels KBSW (i) (i = 1 to LAST) with registers VALUE (MODE, KBSW).
The contents of (i)) are incremented (step S1304 of the increment processing routine) or decremented, and register VALUE (MODE, KBSW).
(I)) Channel event (MODE =
If "1", channel pressure event) is MID
It is written in the I buffer (step S1304 of the increment processing routine). The channel pressure event corresponding to each keyboard channel written in the MIDI buffer is then taken into the event register EV every time the MIDI processing routine is executed (step S502), and the channel event processing routine is executed. It is sent to the tone synthesis circuit 9 (step S1104). In this way, the volume setting corresponding to the dial operation is made for the tone generation channels corresponding to all the keyboard channels in the tone synthesis circuit 9.

B. Other parameter setting by dial operation The performer sets the parameters other than volume such as tone number and effect by pressing the switch corresponding to the desired parameter among the switches BC _{2 to} BC ₄ and then performing the dial operation. It can be performed. Also in this case, the same processing as in the case of the volume setting described above is performed. That is, when the player presses the switch BC ₂ , the data "2" corresponding to the tone color setting is written in the mode register MODE in the panel processing routine S803, and when the switch BC ₃ is pressed, it corresponds to the sound image position setting. The data “3” is written to the mode register MODE, and when the switch BC ₄ is pressed, the data “4” corresponding to the reverb depth setting is written, and when the switch BC ₅ is pressed, the vibrato depth setting is set. Corresponding data "5" is written. After that, when a dial operation is performed, all keyboard channels KB
For SW (i) (i = 1 to LAST), register VAL of the type specified by mode register MODE
The content of the UE (MODE, KBSW (i)) is incremented (step S130 of the increment processing routine).
4) Or decremented, register VALUE
The channel event stored in (MODE, KBSW (i)) is written to the MIDI buffer (step S1304 of the increment processing routine). And M
By executing the IDI processing routine, the MIDI
The channel event written in the buffer is sent to the musical sound synthesizing circuit 9 (step S1104), and parameters are set according to the dial operation on the musical sound synthesizing circuit 9.

C. When the dial operation is performed after the tone color number is input by the tone color setting unit 22 In this case, MODE = “0” and the increment processing routine is started, and the determination result of step S1301 is “Yes” and step S1321 Go to. Then, the content of the velocity offset register VOFST (TC / SEL) corresponding to the tone color number TC / SEL is 12
It is determined whether it is less than 7. This judgment result is "Ye
s ”, the velocity offset register VOFST
Increment (TC / SEL) (step S13
22) and proceeds to step S1323. Also, step S
If the determination result of 1321 is “No”, step S13
Without executing 22, the process proceeds to step S1323. Next, proceeding to step S1323, the contents of the velocity offset register VOFST (TC / SEL) are displayed on the display unit 6.
Displayed in 1 and return to the main routine. Like this MOD
When E = “0”, the value of the velocity offset corresponding to the tone color number being set is updated by the dial operation.

Tempo Setting When the performer presses the tempo setting increment key 32 or decrement key 33, a panel event indicating that these keys have been operated is detected via the operation panel interface 8. As a result, the CPU
3 is the step S802 of the panel processing routine,
14, the tempo data in the tempo register TEMPO is increased or decreased according to the operation of the increment key 32 or the decrement key 33 (step S1401), and the tempo register T
The contents of the EMPO are sent to the operation panel interface 8 and displayed on the display 31 (step S1402). Then, the tempo setting routine is ended, and the process returns to the main routine via the panel processing routine. Thereafter, the generation timing of the metronome sound is controlled based on the tempo data newly written in the tempo register TEMPO.

Operation in Keyboard Play When the performer presses any key on the keyboard 1, a key press event corresponding to the key is detected via the key interface 2. As a result, when the process proceeds to the key processing routine via step S404 of the main routine, the determination result of step S702 becomes "YES" and the process proceeds to step S703. Then, the note-on event corresponding to the key depression event is generated for all keyboard channels KBSW (i) (i = 1 to LA) set at that time.
ST) and write them to the MIDI buffer as internal MIDI events. As a result, when the MIDI processing routine is activated, the determination result of step S501 becomes "YES", and the process proceeds to step S502.
Then, one of the internal MIDI events in the MIDI buffer is extracted and written in the event register EV, and the channel number of the extracted MIDI event is written in the MIDI channel register MCH. Next, in step S503, it is determined whether the event stored in the event register EV is a note event. In this operation, the event is a note event, so
In step S504, the note event processing routine is executed.

FIG. 15 shows the flow of the note event processing routine. First, in step S1501, the note code in the note-on event stored in the event register EV is written in the note code register NC. Next, proceeding to step S1502, the note velocity at the note-on event is written to the note velocity register NV. Next, in step S1503,
It is determined whether or not the note-on event is stored in the event register EV. In this case, step S15
The determination result of 03 is "YES" and step S150
4, the channel status register ST (k) (k
= 1-28), it is determined whether or not there is a register whose content is "0", that is, whether or not there is a vacant channel that is not producing any tone among all tone producing channels of the tone synthesizing circuit 9. If the result of this determination is "YES", the flow proceeds to step S1505, and any one channel number of the empty channels is written in the tone generation assignment register ACH. Next, in step S1506, the pronunciation assignment register AC
Channel status register ST corresponding to the contents of H
Information (1) indicating that the channel is being depressed is written in (ACH). Next, proceeding to step S1507, the contents of the note code register NC are written in the note channel register STNC (ACH) for each tone generation channel specified by the tone generation assignment register ACH. Next, proceeding to step S1508, the tone generation assignment channel register AC
The content of the MIDI channel register MCH is written in the MIDI channel number register AMC (ACH) specified by H. Next Step S1509
The CPU 3 proceeds to the above-mentioned AC in the tone synthesis circuit 9.
For the tone generation channel corresponding to H, the MIDI channel number stored in the MIDI channel register MCH, the note code stored in the note code register NC, the note velocity stored in the note velocity register NV, and the note-on which instructs the tone generation. Send a signal. As a result, the tone generation channel ACH of the tone synthesis circuit 9 causes C
A musical tone corresponding to the note code and note velocity given from PU3 is formed and sounded. Here, the tone synthesis circuit 9 stores control parameters such as tone color and volume for each MIDI channel as described above, and one of these control parameters corresponding to the MIDI channel number given from the CPU 3 is stored. It is used to control the tone formation.

When step S1509 ends, the note event processing routine ends and the process returns to the MIDI processing routine. On the other hand, no free channel was found,
If the result of the determination in step S1504 is "NO", steps S1505 to S1509 are not executed and MI
Returning to the DI processing routine, in step S506, it is determined whether the content of the record flag REC is "1", and if the determination result is "NO", the processing returns to the main routine.

Next, when the performer releases the pressed key on the keyboard 1, a key release event corresponding to the key is detected via the key interface 2. As a result, when the process proceeds from step S404 of the main routine to the key processing routine, the determination result of step S702 becomes "YES", which is the same as in the case of the key pressing event described above, in step S7.
03, step S402 of the May routine, and steps S501, S502, S503 of the MIDI processing routine are executed, and the process proceeds to step S504 to execute the note event processing routine. Then, the note code of the note-off event stored in the event register EV is written in the note code register NC (step S1501),
The note velocity at the same note-off event is written to the note velocity register NV (step S15).
02).

In the case of a note-off event, step S
The determination result of 1503 is “NO”, and step S15
Proceed to 10, and note code register ST for each sound channel
The stored contents of the NC (k) (k = 1 to 28) and the channel status register ST (k) (k = 1 to 28) are sequentially determined, and STNC (k) = NC, and ST
Whether or not there is a number k that satisfies (k) = (1), that is, a tone corresponding to the note code NC is being produced,
At the same time, it is determined whether or not there is a sound generation channel in the note-on state. If the result of this determination is "YES", the flow advances to step S1511 to set the tone generation channel number k found in step S1510 to the tone generation assignment register A.
Write on CH. Next, proceeding to step S1512, the information "2" indicating that the key is released but the key is released is written in the channel status register ST (ACH) designated by the tone allocation register ACH. Next, proceeding to step S1513, note-off information NOFF is sent to the tone generation channel designated by the tone generation allocation register ACH in the tone synthesis circuit 9. As a result, the muffling process is performed in the tone generation channel ACH. Then, when step S1513 ends, the note event processing routine ends and the process returns to the MIDI processing routine.
On the other hand, when the result of the determination in step S1510 is "NO", steps S1511-S1513 are not executed and the process returns to the MIDI processing routine. Then, as in the case where the above-described key depression is performed, the process returns to the main routine through step S506 or further step S507.

Processing for Foreign MIDI Event M from external device via MIDI interface 6
When the IDI event is received, when the process proceeds to the external MIDI processing routine in step S403 of the main routine, the determination result in step S601 is "YES", and the process proceeds to step S602. And the received MID
Set the channel number of the I event to the channel number register MC
Write to H. Next, proceeding to step S603, the reception channel flag RC (MC
It is determined whether the content of H) is "1", that is, whether the received MIDI event should be processed by this automatic musical instrument. This judgment result is "YE
If “S”, the process proceeds to step S604, and the received M
Write the IDI event to the MIDI buffer and return to the main routine. On the other hand, if the decision result in the step S603 is “NO”, the step S604 is not executed and the process returns to the main routine. The received MIDI event written in the MIDI buffer is read from the MIDI buffer when the MIDI processing routine is executed and is controlled by the tone synthesis circuit 9 as in the MIDI event generated by the keyboard performance or the operation of the operation panel described above. used.

Generation of Metronome Sound When the performer turns on the metronome sound instruction switch 23, the on event is detected via the operation panel interface 8. As a result, in step S803 of the panel processing routine, the metronome flag MM
Information "1" for instructing the generation of a metronome sound is written in and the LED lamp 24 is turned on. As a result, when the interrupt processing routine is subsequently executed, the determination result of step S2102 becomes "YES" and step S2102.
Proceeding to 2103, the metronome processing routine whose flow is shown in FIG. 22 is executed. First, step S2
Proceed to 201 and count register for metronome MCN
Decrement the content of T by "1". Next, proceeding to step S2202, it is determined whether or not the content of the metronome sound count register MCNT is "0", that is, whether or not it is the generation timing of the metronome sound. If the result of this determination is "Yes", then step S22.
If it is “No”, the process returns to the interrupt processing routine. Next, proceeding to step S2203, the program change event for the metronome sound is set to channel number "1.
Music synthesis circuit 9 as a MIDI event corresponding to "6"
Supply to. Next, proceeding to step S2204, the note-on information NON corresponding to the channel number "16" is sent to the tone synthesis circuit 9. As a result, in the tone synthesis circuit 9,
A metronome sound is produced as a musical sound corresponding to the MIDI channel "16". Next, proceeding to step S2205, the contents of the parameter setting register VALUE (2, 16), that is, the tone color number originally set to restore the tone color setting of the MIDI channel "16" is input to the tone synthesis circuit 9 as a program change event. send. By doing so, the MID in the tone synthesis circuit 9
The I channel "16" can be used as a tone generation channel for other timbres and musical tones like other channels without dedicating to the metronome. Next, in step S2206,
The contents of the tempo register TEMPO are written in the metronome count register MCNT. Then, the process returns to the interrupt processing routine. The above operation is repeated each time a fixed time elapses, and the metronome count register is decremented by "1". Then, the metronome processing routine is executed a number of times corresponding to the contents of the tempo register TEMPO, and every time MCNT = “0”, step S is executed.
2203 to S2206 are executed, and the metronome sound is generated.

(2) Playback Mode Setting of Playback Channel When a MIDI event is played back from the performance data memory area in the RAM 5 to perform an automatic performance, the performer sets a playback channel. Record switch flag RECSW when the record switch 41 is not pressed
Is "0". In this state, L
Among the ED lamps LQi (i = 1 to 16), the LED lamp corresponding to the MIDI channel number set as the reproduction channel is turned on. The performer determines which MID the LED lamp LQi (i = 1 to 16) lights up.
Check if the I channel is the playback channel.

When a MIDI channel that is not a reproduction channel is newly set as a reproduction channel, the performer must select the sequencer channel switch BMi (i = 1 to 1).
In 6), press the switch corresponding to the number of the channel to be the reproduction channel. When this ON event of the sequencer channel switch is detected through the operation panel interface 8, the CPU 3 executes the sequencer channel switch processing routine whose flow is shown in FIG. 16 in step S803 of the panel processing routine. First, in step S1601, the number i of the pressed sequencer channel switch BMi is written in the variable register N. Next, proceeding to step S1602, it is determined whether the content of the record switch flag RECSW is "0". When the performer does not press the record switch 41, RECSW = “0” (the reason will be described later), the determination result of step S1602 is “YES”, and the process proceeds to step S1603. Then, it is determined whether or not the content of the reproduction flag RSW (N) corresponding to the MIDI channel N is "1". If the MIDI channel N is not set as a playback channel, RSW
(N) = “0”, the determination result of step S1603 becomes “NO”, and the process proceeds to step S1604.
Then, "1" is written in the record flag RSW (N). Next, in Step S1605, the LED lamp L
Among Qi (i = 1 to 16), the LED lamp LQ _N corresponding to the MIDI channel _N is turned on, and the process returns to the main routine through the panel processing routine.

When the MIDI channel set as the reproduction channel is to be excluded from the reproduction channels, the performer presses the sequencer channel switch BMi corresponding to the MIDI channel. Here, if the MIDI channel i is set as the reproduction channel, the PSW
(I) = “1”. In this case, when the sequencer channel switch processing routine is executed by pressing the sequencer channel switch BMi, step S1
The determination result of 603 is “NO”, and step S160
Proceed to 7. Then, the reproduction flag PSW (N) (= PSW
Write "0" in (i)). Then in step S160
8, the LED lamp L corresponding to the MIDI channel N (= i) of the LED lamps LQi (i = 1 to 16)
The Q _N and a lighting state, returns to the main routine via the panel processing routine.

Automatic Performance When the reproduction channel setting is completed as described above, the performer presses the start switch 42. When the ON event of the start switch 42 is detected via the operation panel interface 8, the CPU 3 executes the start switch processing routine whose flow is shown in FIG. 17 in step S803 of the panel processing routine. First,
In step S1701, it is determined whether the content of the record switch flag RECSW is "1". If the player has not pressed the record switch 41, the result of the determination in step S1701 is "NO", and the flow advances to step S1702. Then, the start flag STA
It is determined whether the content of RT is "0". If the result of this determination is "YES", the flow advances to step S1703 to write "1" in the start flag START. Next, proceeding to step S1704, initial setting processing for reproduction is performed. By this initialization processing, the first duration data is read from each track corresponding to the reproduction channel of the performance data memory area in the RAM 5, and the duration register DT corresponding to each reproduction channel i.
Written in (i). In addition, in this initial setting process, other various pointers necessary for reproduction are set. Then, the process returns to the main routine via the panel processing routine. If START = "1" at the time when the start switch 42 is pressed, that is, if the start switch 42 is pressed during the automatic performance, the step S of the start switch processing routine is performed.
When it proceeds to 1702, the result of the judgment is “NO”,
The routine returns to the main routine via the panel processing routine without executing steps S1703 and S1704.

By depressing the start switch 42, ST
When ART = “1” is set, when the interrupt processing routine is subsequently executed, the determination result of step S2104 is “Y”.
ES ”, and in step S2105, a reproduction processing routine whose flow is shown in FIG. 23 is executed. First, in step S2301, the variable register i is initialized to "1". Next, proceeding to step S2302, it is determined whether or not the content of the reproduction flag PSW (i) corresponding to the MIDI channel i is "1", that is, whether or not the MIDI channel i is a reproduction channel. If the result of this determination is “YES”, the flow proceeds to step S2303,
If “NO”, the process proceeds to step S2309.

Next, in step S2303, MID
Duration register DT corresponding to I channel i
Decrement (i). Next, proceeding to step S2304, it is determined whether the content of the duration register DT (i) has become "0" or less. When this determination result is “NO”, the process proceeds to step S2309. In contrast, the determination result of step S2304 is “YES”
When it becomes, it progresses to step S2305 and MIDI.
The event corresponding to the channel i is read from the corresponding performance data memory area in the RAM 54. Further, the duration data of the MIDI channel i event to be read next is read from the performance data memory area and written into the duration register DT (i).

Next, in step S2306, it is determined whether the content of the dial priority flag PRSW is "1". Here, the dial priority flag PRSW is written with "1" when the dial priority switch 52 is turned on, and is written with "0" when it is turned off. When PRSW = "1", LED5
Only LED 53 of 3 and 54 is turned on,
When PRSW = "0", only the LED 54 is turned on. The processing in response to the operation of these dial priority switches 52 is performed in step S of the panel processing routine.
At 803.

If the content of the dial priority flag PRSW is "1", the determination result of step S2306 is "Y".
ES ”, and the process proceeds to step S2307. Then, it is determined whether the MIDI event read from the performance data memory area is a note-on event or a note-off event. If the result of this determination is "YES", the flow proceeds to step S2308, and the MIDI event read from the performance data memory area is written in the MIDI buffer as an internal MIDI event. Then, the process proceeds to step S2309. On the other hand, if the decision result in the step S2307 is "NO", that is, if the MIDI event read from the performance data memory area is not a note event, the process advances to the step S2309 without executing the step S2308. As described above, when the content of the dial priority flag PRSW is "1", only the note event among the MIDI events reproduced from the performance data memory area is written in the MIDI buffer, and the channel pressure event, the program change event, etc. Channel events are not written to the MIDI buffer. On the other hand, when the dial operation is performed in the reproduction mode, the increment processing routine or the decrement processing routine is executed as described in detail in the description of the musical instrument mode, a channel event is generated and written in the MIDI buffer. Also,
When a note event is generated by playing the keyboard, or when a MIDI event is supplied from an external device,
Those MIDI events are written to the MIDI buffer.

MIDI written in MIDI buffer
The event is then taken into the event register EV by executing the MIDI processing routine (step S502). And the event register EV
If the MIDI event taken in is a note event, the note event processing routine is executed, and the parameter corresponding to the note event taken in the event register EV is sent to the tone synthesis circuit 9 (step S1509 or S1513). . If the MIDI event fetched in the event register EV is a channel event, the channel event processing routine is executed, and the parameter corresponding to the channel event fetched in the event register EV is set to the tone synthesis circuit 9.
(Step S1104). PR like this
When SW = “1”, only the note event among the reproduced events from the performance data memory area is used for controlling the tone synthesis circuit 9. The volume control and tone color control of the tone synthesis circuit 9 are performed by dial operation and the channel events reproduced from the performance data memory area are ignored.

On the other hand, if the content of the dial priority flag PRSW is "0", the result of the determination in step S2306 is "NO", and the flow advances to step S2308 to set the MIDI event read from the performance data memory area to MI.
Write to DI buffer. Then, step S2309
Proceed to. Events written to the MIDI buffer are
After that, the MIDI processing routine is executed, so that the MIDI processing routine is loaded into the event register EV (step S
502). Then, by executing the note event processing routine or the channel event processing routine, the parameter corresponding to the event fetched in the event register EV is sent to the tone synthesis circuit 9. As described above, when PRSW = “0”, all MIDI events that are reproduced events from the performance data memory area are used to control the tone synthesis circuit 9.

Next, proceeding to step S2309, the variable register i is incremented. Then in step S231.
It proceeds to 0 and determines whether i> 16. If the result of this determination is "NO", the flow returns to step S2032,
The same processing as described above is performed for the new MIDI channel i. Then, the determination result of step S2310 is “YE
When it becomes "S", the process proceeds to step S2311. Then, it is determined whether or not the reproduction of the MIDI event has ended for all the reproduction channels. This judgment result is "NO"
In the case of, the reproduction processing routine is ended and the processing returns to the interrupt processing routine. Then, after the interrupt processing routine ends, the processing interrupted by the interrupt processing is restarted. After that, the interrupt processing routine is executed every time a fixed time elapses, and the same processing as described above is repeated.

When all the MIDI events of the reproduction channel are read from the performance data memory area in the RAM 5, when the reproduction processing routine is executed through the interrupt processing routine, the determination result of step S2311 is "YES".
Becomes As a result, the process proceeds to step S2312, "0" is written in the start flag START, and the process returns to the interrupt processing routine. After that, even if the interrupt processing routine is executed, since START = “0”, the reproduction processing routine is not executed. In this way, the automatic performance ends.

When the performer presses the stop switch 43 during or after the automatic performance, the on event is detected. As a result, the CPU 3 executes the stop switch processing routine shown in FIG. 20 via the panel processing routine. First, in step S2001,
It is determined whether or not the content of the start flag START is "1". If this determination result is "Yes", that is, if automatic performance is currently being performed, step S2 is performed.
In step 002, "0" is written in the start flag START. Next, proceeding to step S2003, the tone generation channels that are currently in the tone generation state in the tone synthesis circuit 9, that is, the channel status register ST corresponding to each
The note-off information NOFF is supplied to all the tone generation channels i whose contents (i) are "1". As a result, the tone synthesizing circuit 9 performs the muffling process for all the tones that were being sounded. Then, step S200
Go to 4. On the other hand, the stop switch 4
When 3 is pressed, the determination result of step S2001 is “No”, and steps S2002 and S200
Without executing 3, the process proceeds to step S2004. Next, proceeding to step S2004, it is determined whether the content of the record flag REC is "1". REC = "0"
In the case of, the result of this determination is “No”, and step S
The stop switch processing routine ends without executing 2004 to S2007.

(3) Playback / Recording Mode In the playback / recording mode, the playback processing of the MIDI event in the performance data memory area in the RAM 5 and the MIDI event or the external MIDI event generated by the keyboard performance or the operation of the operation panel are transferred to the RAM 5. The recording process of is executed in parallel. Before performing the processing in the playback / recording mode, the performer sets the playback channel and the recording channel. Since the setting of the reproduction channel has already been described, only the process for setting the recording channel will be described below.

Setting of Recording Channel When performing recording, the performer first presses the record switch 41. As a result, an ON event of the record switch 41 is detected via the operation panel interface 8, and the CPU 3 causes the panel processing routine to proceed to step S.
In 803, a record switch processing routine whose flow is shown in FIG. 18 is executed. First, step S1801
At, it is determined whether or not an on-event of the record switch 41 is detected. In this case, step S180
The result of determination 1 is “Yes” and step S1802
Then, the process advances to step S1 and writes "1" in the record switch flag RECSW. Next, proceeding to step S1803, the record flag RSW corresponding to each channel at that time.
(I) The contents of (i = 1 to 16) are determined, and RSW (i)
All channel numbers i satisfying "1", that is, the numbers of MIDI channels already set as recording channels at that time are detected. And L
Among the ED lamps LQi (i = 1 to 16), the LED lamp corresponding to the detected channel number i is turned on. Then, the process returns to the main routine via the panel processing routine. The performer confirms which MIDI channel is the recording channel by checking the lighting state of the LED lamp LQi (i = 1 to 16).

When the performer releases his finger from the record switch 41, an off event of the record switch 41 is detected via the operation panel interface 8, and the CPU 3
In step S803 of the panel processing routine, the record switch processing routine is executed again. in this case,
Since the off event of the record switch 41 is detected, the process proceeds to step S1805 through steps S1801 and S1804. Then, "0" is written in the record switch flag RECSW. Then step S
Proceeding to 1805, the contents of the reproduction flags PSW (i) (i = 1 to 16) corresponding to each channel at that time are determined, and all channel numbers i satisfying PSW (i) = “1”, that is, The number of the MIDI channel set as the reproduction channel at that time is detected. Then, among the LED lamps LQi (i = 1 to 16), the LED lamp corresponding to the detected channel number i is turned on. Then, the process returns to the main routine via the panel processing routine. As a result of such processing, the content of the record switch flag RECSW becomes "1" only while the record switch 41 is pressed, and becomes "0" when the record switch 41 is not pressed. If the record switch 41 is pressed down, L
The recording channel is displayed by the ED lamp LQi (i = 1 to 16), and when not pressed, the reproduction channel is displayed.

When the MIDI channel set as the recording channel is to be excluded from the recording channels, the performer presses the record switch 41 and then presses the sequencer channel switch BMi corresponding to the MIDI channel. In this case, when the sequencer channel switch processing routine is executed, the process proceeds to step S1608 and the determination result is “YES”. Then, the record flag RSW (N) writes "0" in (= RSW (i)) (step S1611), LED lamp turns off the LQ _N (step S1611), returns to the main routine via the panel processing routine. By performing the above-described processing, the MIDI channel desired by the performer is set as the recording channel.

Automatic performance and recording When the setting of the reproduction channel and the recording channel is completed by the above processing, the performer sets the record switch 41.
And the start switch 42 are both pressed. As a result,
By pressing the record switch 41, the REC
SW is set to "1". When the ON event of the start switch 42 is detected via the operation panel interface 8, the CPU 3 executes a start switch processing routine whose flow is shown in FIG. In this case, since RECSW = “1”, step S170
The determination result of 1 is “Yes”, and step S1705
Proceed to. Then, the content of the record flag REC is "0".
Or not. If the result of this determination is "YES", the flow advances to step S1706 to write "1" in the start flag START and record flag REC. Next, proceeding to step S1707, initialization processing of various pointers for recording is performed. Then, the process returns to the main routine via the panel processing routine. Note that when the record switch 41 is pressed, REC =
If it is "1", that is, if both the start switch 42 and the record switch 41 are pressed during the recording operation, when the process proceeds to step S1705 of the start switch processing routine, the determination result is "NO". Thus, the process returns to the main routine via the panel processing routine without executing steps S1706 and S1707.

Since START = "1",
Similar to the case of the reproduction mode described above, when the interrupt processing routine is executed thereafter, the reproduction processing routine is executed in step S2105. When the MIDI event corresponding to the reproduction channel is read from the performance data memory area of the RAM 5 by executing the reproduction processing routine (step S2305), the event is M
Sequentially written to the IDI buffer. Also, when a MIDI event is generated by the keyboard operation or the operation of the operation panel, or when the MIDI event is taken in from an external device, those MIDI events are also MI
Sequentially written to the DI buffer. MI in this way
As a result of the MIDI event being written to the DI buffer,
When the MIDI processing routine is executed, step S5
The determination result of 01 is “Yes”. And MIDI
The MIDI event is taken out from the buffer and written in the event register EV, and the MIDI channel number of the MIDI event is stored in the channel number register M.
It is written in CH (step S502). Then, based on the MIDI event loaded in the event register EV, a note event processing routine (step S50)
4) Alternatively, the channel event processing routine (step S505) is executed, and the parameter corresponding to the channel event fetched in the event register EV is sent to the tone synthesis circuit 9. Thus, along with the MIDI event read from the RAM 5, the MIDI event generated by the keyboard operation or the operation of the operation panel or the MIDI event supplied from the external device is MIDI.
It is taken out from the buffer and the control of the tone synthesis circuit corresponding to each is executed.

Next, in step S506, REC =
Since it is “1”, the judgment result is “Yes”,
In step S507, a recording processing routine whose flow is shown in FIG. 19 is executed. First, in step S1901, whether or not the content of the record flag RSW (MCH) corresponding to the MIDI channel MCH is "1", that is,
In the MIDI processing routine, it is determined whether the MIDI event taken out from the MIDI buffer and written in the event register EV is the MIDI event to be recorded. If the result of this determination is "Yes", the flow proceeds to step S1902. Then, to the buffer track corresponding to the MIDI channel MCH in the RAM 5, the elapsed time from the writing of the MIDI event before that until the present is written as duration information, and the MIDI event in the event register EV is written as event information. . Then, the process returns to the main routine via the MIDI processing routine. After that, the same processing is performed every time the MIDI processing routine is activated.

When all the MIDI events of the reproduction channel have been read from the performance data memory area in the RAM 5, step S2312 of the reproduction processing routine is executed as in the case of the above-mentioned reproduction mode, and START =
It becomes "0", and the automatic performance ends. When the performer presses the stop switch 43, the stop switch processing routine is executed, and the process proceeds to step S2004. If REC = “1”, step S
The determination result of 2004 is “Yes” and step S2
In step 004, “0” is written in the record flag REC. Next, proceeding to step S2006, note-off information and end codes are written in the buffer tracks corresponding to all recording channels. Next, proceeding to step S2007, the contents of the buffer track corresponding to each recording channel are written in the performance data memory area corresponding to each MIDI channel number. Then, the stop switch processing routine is ended, and the process returns to the main routine. After that, MI
Even if some MIDI event is written to the DI buffer and the MIDI processing routine is executed, the REC
Since = “0”, the recording processing routine is not executed.
The recording is completed in this way. If the stop switch 43 is pressed before the automatic performance ends, steps S2002 and S20 of the stop switch processing routine are performed.
03 is executed, the processes from step S2004 are executed, and the recording ends.

As a result of the above processing, the RAM
The contents of the performance data memory area in 5 are updated as follows. a. Performance data memory area corresponding to a MIDI channel that is set as a recording channel but not set as a playback channel. MIDI events that have been recorded in this performance data area before recording are erased by recording. And during recording, keyboard 1
Alternatively, when a MIDI event is generated by the operation of the operation panel 7 or when a MIDI event is received from an external device, the MIDI event corresponding to the channel number is written in the performance data memory area. b. Performance data area corresponding to the MIDI channel set as a recording channel and a playback channel The content of this performance data area is the MIDI event newly generated during the operation in the playback recording mode, in contrast to the MIDI event stored before recording. Among them, the contents corresponding to the MIDI channel numbers are updated to the merged contents. More detailed description is as follows. b1. When a keyboard channel that matches the recording channel is set When a keyboard performance is performed during recording, the contents of the performance data memory area corresponding to the keyboard channel will be the same as the contents stored before recording. It is a merged note event generated by. Also, recording is performed with the dial priority flag PRSW set to "1",
When the dial 51 is operated at that time, the channel event generated in response to the dial operation is written in the performance data memory area corresponding to the keyboard channel. In this case, the channel event in the performance data memory area corresponding to the keyboard channel before recording is erased. On the other hand, dial priority flag PRSW
Is recorded in the state of "0", and dial 51
Is operated, the channel event generated in response to the dial operation is merged with the contents of the performance data memory area corresponding to the keyboard channel. b2. When a MIDI event matching the recording channel is received from the external device The received MIDI event is merged with the contents of the performance data memory area corresponding to the corresponding MIDI channel.

[0061]

As described above, according to the present invention, the performance data storage means for storing the performance data and the performance operator are provided, and the performance means for outputting the performance data in response to the operation on the performance operator. Reproducing means for sequentially reading the performance data from the performance data storage means, musical tone forming means for forming musical tones according to the performance data read by the performance means and the performance data output by the performance means, and the reproducing means. Since the buffer storage means for sequentially storing the read performance data and the performance data output by the performance means and the writing means for writing the performance data stored in the buffer storage means into the performance data storage means are provided, You can add desired performance data while performing automatic performance,
The effect that the efficiency of editing performance data is improved can be obtained.

[Brief description of 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 plan view showing an operation panel of the embodiment.

FIG. 3 is a diagram for explaining each routine executed in the same embodiment and their relationships.

FIG. 4 is a flowchart illustrating the operation of the same embodiment.

FIG. 5 is a flowchart illustrating the operation of the embodiment.

FIG. 6 is a flowchart illustrating the operation of the embodiment.

FIG. 7 is a flowchart illustrating the operation of the embodiment.

FIG. 8 is a flowchart illustrating the operation of the embodiment.

FIG. 9 is a flowchart illustrating the operation of the embodiment.

FIG. 10 is a flowchart illustrating the operation of the embodiment.

FIG. 11 is a flowchart illustrating the operation of the embodiment.

FIG. 12 is a flowchart illustrating the operation of the embodiment.

FIG. 13 is a flowchart illustrating the operation of the embodiment.

FIG. 14 is a flowchart illustrating the operation of the embodiment.

FIG. 15 is a flowchart illustrating the operation of the embodiment.

FIG. 16 is a flowchart illustrating an operation of the embodiment.

FIG. 17 is a flowchart illustrating the operation of the embodiment.

FIG. 18 is a flowchart illustrating the operation of the embodiment.

FIG. 19 is a flowchart illustrating the operation of the embodiment.

FIG. 20 is a flowchart illustrating the operation of the embodiment.

FIG. 21 is a flowchart illustrating the operation of the embodiment.

FIG. 22 is a flowchart illustrating the operation of the embodiment.

FIG. 23 is a flowchart illustrating the operation of the embodiment.

[Explanation of symbols]

1 ... keyboard, 3 ... CPU, 5 ... RAM, 9 ... tone synthesis circuit.

Claims (1)

[Claims] 1. Performance data storage means for storing performance data, performance means having performance operators for outputting performance data in response to an operation on the performance operators, and performance data from the performance data storage means. Reproduction means for sequentially reading, musical tone forming means for forming musical tones according to the performance data read by the performance means and performance data output by the performance means, performance data read by the reproduction means and output by the performance means An automatic performance device comprising: buffer storage means for sequentially storing performance data; and writing means for writing the performance data stored in the buffer storage means into the performance data storage means.