JP3237161B2 - Automatic performance device - Google Patents

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 having a function of recording performance data and an automatic performance function based on performance data.

[0002]

2. Description of the Related Art A recording function for creating performance data according to the operation of performance operators 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 performance data stored in the RAM. There is known an automatic performance device having both a reproduction function of performing an automatic performance in accordance with such performance data.

[0003]

When the performance data is to be edited by the above-mentioned conventional automatic performance device, the performer first records the performance data of the desired music in the RAM, and then performs the performance data in the RAM. It is necessary to confirm whether or not 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 it was not possible. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide an automatic performance device that can perform an automatic performance based on performance data and update performance data at the same time.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and has a performance including at least note event data for controlling the generation of musical tones and control data for controlling the manner in which the musical tones are generated. A performance data storage means for storing data; and a performance operator including at least an operator for controlling the generation of musical tones and an operator for controlling the mode of generation of musical tones. Playing means for outputting control data as performance data in response to an operation of an operator for controlling the generation mode of the musical sound, and reproducing means for sequentially reading the performance data from the performance data storage means. a selection <br/>-option means, when the first option is selected by the selection means, Notoi from the performance data read by said reproducing means Extracting and outputting only the performance data read out by the selecting means, and when the second option is selected by the selecting means, outputting the performance data read out by the reproducing means as it is; Buffer storage means for sequentially storing output performance data; writing means for writing the performance data stored in the buffer storage means to the performance data storage means; and musical tones according to the data in the buffer storage means.
And a note event data in the performance data read out from the performance data storage means when the first option is selected by the selection means. Performance data output by the performance means is stored, and control data of the performance data read from the performance data storage means is not stored.

[0005]

According to the above arrangement, the performance data read from the performance data storage means and the performance data obtained by operating the performance operator are used for controlling the automatic performance and are 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]

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 performance device according to an embodiment of the present invention. This automatic performance device has the following functions. Further, as described below, in this automatic performance apparatus, all operation events of performance operators, performance data read from the storage means, and the like are converted into MIDI events and handled. (A) an event generating function for generating a MIDI event in response to an operation of a performance operator; (b) a reproduction function of reading performance data from a storage means and outputting it as a MIDI event; An automatic performance function for performing a performance based on 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 as performance data to the storage means. ) Function for generating a metronome sound at a specified tempo In addition, this automatic performance device can perform the following specification for 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 operation of a 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 a MIDI event channel number (hereinafter, recording channel) to be recorded as performance data in the storage means

[0007] The components of the apparatus described below are used as means for realizing the above functions. In FIG. 1, reference numeral 1 denotes a keyboard as a performance operator. Reference numeral 2 denotes a key interface, which detects a key press / key release operation performed on each key of the keyboard 1, and outputs the key as a key event. Reference numeral 3 denotes a CPU (Central Processing Unit), which controls the entire apparatus including the functions (a) to (d). 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. Reference numeral 5 denotes a RAM, which is used as a storage area for control data used for control performed by the CPU 3. The 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 for 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 a performance operator 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 the operation as a panel event.
The display of each display of the operation panel 7 is controlled in accordance with a command from the CPU 3. Reference numeral 9 denotes a tone synthesis circuit for synthesizing a tone signal, and reference numeral 10 denotes a sound system for generating a tone signal output from the tone synthesis circuit 9 as a tone. B
Reference numeral 1 denotes a MIDI event bus.
The I interface 6, the tone synthesis circuit 9 and the sound system 10 are interconnected and used as a communication path for exchanging MIDI events between these elements. A data bus B2 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 data exchange between these elements. You. For example, key press 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 musical 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 setting section,
The keypad includes a numeric keypad for inputting a tone number, an increment key for increasing / decreasing the input tone number, and a decrement key. 23 is a metronome switch for instructing generation of a metronome sound. When the metronome switch 23 is turned on, the LE
The D lamp 24 lights up. Reference numeral 31 denotes a display for displaying the currently set tempo. Numerals 32 and 33 are an increment key and a decrement key for instructing increase / decrease of the currently set tempo. Reference numeral 41 denotes a record switch, which is depressed when a recording start instruction and the above-described recording channel setting are performed. Reference numeral 42 denotes a start switch for instructing start of automatic performance, and reference numeral 43 denotes a stop switch for instructing stop of automatic performance. BM ₁ to Bm ₁₆ are each keyboard channel switch, used to set the above-described keyboard channel. Keyboard channel setting status is LED lamp LM
It is displayed by the _{1 ~LM 16.} BQ _{1 to} BM ₁₆ are sequencer channel switches, respectively, which are used for setting the above-mentioned reproduction channel and recording channel. Setting state of the playback channels and recording channels LED lamp LQ ₁ ~L
It is displayed by Q _16. Reference numeral 51 denotes a dial, which is used as an operator for increasing or decreasing the set values of parameters such as volume and tone. BC _{1 to} BC ₅ are mode designation switches, and are used as operators for designating parameters to be increased or decreased by operating the dial 51. The dial operation, one of the parameters are increased or decreased is displayed by the LED lamps CS ₁ to CS _5. Reference numeral 61 denotes a display for displaying a tone color, volume, and the like. Reference numeral 62 denotes an increment key, and reference numeral 63 denotes a decrement key. Like the dial 51, these keys are used as operators for increasing and decreasing the set values of parameters such as volume and tone. 52
Is a dial priority switch. At the time of reproduction, when the dial priority switch 52 is in the ON state, the parameter control such as volume and tone based on the performance data read from the RAM 5 is invalidated, and the parameter control by operating the dial 51 is preferentially executed. When the dial priority switch 52 is off, both the parameter control based on the performance data read from the RAM 5 and the parameter control based on the operation of the dial 51 are performed.

Next, control registers and flags configured using the storage area in the RAM 5 will be described below. Start flag START: This start flag STA
RT is set to “1” when the start switch 42 is pressed. When START = "1", R
Performance data is read from the performance data memory area of AM5, and an automatic performance is performed. Record flag REC: This record flag REC is
When the record switch 41 and the start switch 42 are pressed at the same time, “1” is set, and as a result,
Recording of a MIDI event is performed. MIDI buffer: This MIDI buffer stores MIDI events generated by factors such as playing a keyboard, receiving a MIDI signal from an external device, operating an operation panel, and reading performance data from a 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 sounding states of the 22 sounding channels in the tone synthesis circuit 9. That is, if the sound channel k is an empty channel, ST
(K) = “0”, and when the sound channel k is in the note-on state, ST (k) = “1” and the sound channel k
Is in the note-off state, ST (k) = "2". Metronome flag MM: This metronome flag MM
Is set to "1", a metronome sound is emitted. Tempo register TEMPO: This tempo register TEM
A metronome sound is emitted every time the time corresponding to the content of the PO elapses. Metronome count register MCNT: This metronome count register MCNT is used as a timekeeping means for controlling the sounding timing of a metronome sound, and its contents are decremented each time an interrupt process is executed at a fixed time interval. You. Keyboard channel register KBSW (k) (k = 1 to
LAST) and channel number register LAST: keyboard channel register KBSW (k) (k = 1 to RAS)
T) is a variable-length register in which the number of the keyboard channel is stored. 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
Is written with information corresponding to the type of parameter to be set. Tone number register TC / SEL: The timbre number input by the timbre setting unit 22 is written in the timbre number register TC / SEL. Event register EV: The MIDI event extracted from the MIDI buffer is written in the event register EV. MIDI channel register MCH: The channel number of the MIDI event extracted from the MIDI buffer is written in the MIDI channel register MCH. Parameter setting register VALUE (i, j) (i = 1
-5, j = 1-16): Each parameter setting register VA
In LUE (i, j), each channel event applied to each tone generation channel j of the tone synthesis circuit 9 is stored. That is, VALUE (1, j) stores the channel pressure event applied to the sounding channel j, and
LUE (2, j) stores a program change event, VALUE (3, j) stores a PAN event for sound image position control, and VALUE (4, j) stores an event for reverberation effect control. Is stored and the VALU
E (5, j) stores an event for vibrato control. Velocity offset register VOFST (k) (k =
0 to 127): Velocity offset register VOFS
In T (k), a value of a velocity offset applied at the time of forming a 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 extracted from the event register EV is written in the note velocity register NV. Tone generation channel assignment register ACH: The tone generation channel assignment register ACH has a tone synthesis circuit 9 for generating a tone.
Is written. Note code register STNC (k) for each sounding channel
(K = 1 to 22): The note code register STNC (k) for each sounding channel stores note codes of musical tones sounded by the sounding channel k. MIDI channel register AMC (k) for each sounding channel
(K = 1 to 22): The channel number of the note-on event generated by the sound channel k is stored in the sound channel-specific MIDI channel register AMC (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)
This flag stores a value indicating whether or not the channel k is a recording channel. When RSW (k) = "1", the MIDI channel k is a recording channel. Reproduction flags PSW (k) (k = 1 to 16): These reproduction flags PSW (k) (k = 1 to 16) are
This flag 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 flags 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. This is a flag that stores the indicated value. RC
If (k) = "1", the MI of the MIDI channel k
The reception of the DI event is permitted. Duration register DT (k) (k = 1 to 16):
These duration registers DT (k) (k = 1 to
16), during playback, duration data read from each track k in the performance data memory area is written.

<B> Operation of the Embodiment <Outline of Operation> FIG. 3 illustrates 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 a 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 as an interrupt process by the CPU 3. The specific processing contents of each of these routines will be described in detail in the following section <detailed operation description>, and the outline of the operation of this automatic performance apparatus will be described below with reference to FIG.

(1) Instrument mode (START = "0" R
EC = “0”) In this musical instrument mode, a performance based on an MID event generated by operation of a performance operator such as an operator on the keyboard 1 and the operation panel 7 and a MIDI event received from an external device are performed. A key event generated by operating the keyboard 1 is converted into a MIDI event by a key processing routine, and is stored in a MIDI buffer as a MIDI event corresponding to a keyboard channel. A panel event generated by an operator of the operation panel 7 is performed 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 an external device are stored in a MIDI buffer by an external MIDI processing routine. The MIDI events stored in the MIDI buffer are sequentially fetched by a MIDI processing routine.
The note event in the IDI event is passed to the note event processing routine, and the channel event is passed to the channel event processing routine. 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, and the like based on the channel event. Is done.

(2) Reproduction mode (START = "1",
(REC = “0”) Every time a predetermined time elapses, a reproduction processing routine is executed as an interruption processing, and the performance data is sequentially read from the track corresponding to the reproduction channel in the performance data memory area in the RAM 5. Is written to the MIDI buffer as a MIDI event corresponding to. Also, keyboard performance, operation of the operation panel 7, MIDI from an external device, etc.
If a signal is received, the M
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 tone synthesis circuit 9 is controlled.

(3) Recording / playback mode (START =
“1”, REC = “1”) The recording processing routine is executed along with the execution of the MIDI processing routine. 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 to 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 in the performance data memory area by pressing the stop switch.

<Detailed Description of Operation> When a power switch (not shown) of the automatic performance device is turned on, the CPU 3
Executes a main routine whose flow is shown in FIG. First, the process proceeds to step S401, where an initial value is written in the control data storage area in the RAM 5. Next, step S40
The program proceeds to step 2 to start a MIDI processing routine whose flow is shown in FIG. Then, in step S501, M
It is determined whether or not 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, when the process returns to the main routine, the process proceeds to step S403, and an external MIDI processing routine whose flow is shown in FIG. 6 is started. 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 the determination is "YES", the processing after step S602 is executed and the process returns to the main routine, and if "NO", the process returns to the main routine without performing any processing. Next, when returning to the main routine, the process proceeds to step S404, and a 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. In step S702, it is determined whether a key event indicating that a key on the keyboard 1 has been operated is detected via the key interface 2. If the result of this determination is "YES", step S703 is executed and the process returns to the main routine; if "NO", step S703 is executed.
Without returning to the main routine. Next, when the process returns to the main routine, the process proceeds to step S405, where a sound channel process is executed. Although this sounding channel processing is not described in detail,
Among the tone generation channels of the tone synthesis circuit 9, the number k of the tone generation channel in which the level of the tone being sounded is below a predetermined value is detected, and the channel status register ST (k) corresponding to the detected tone generation channel is detected. Information "0" indicating an empty channel is written. Next, the process proceeds to step S406, where a 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. The process advances to step S802 to determine whether or not a panel event indicating that an operator on the operation panel 7 has been operated has been detected via the operation panel interface 8. If the determination is "YES", the flow proceeds to step S803 to execute a routine corresponding to the detected panel event, and returns to the main routine. If "NO", the flow returns to the main routine without step S803. Then, thereafter, the CPU 3 performs steps S402 to S4.
Repeat step 06.

The CPU 3 interrupts the processing being executed at that point of time every time a predetermined period elapses, and executes an interrupt processing routine shown in FIG. First, step S2101
Then, the information corresponding to the non-permission of the interrupt is written into the interrupt control flag so as not to accept another interrupt request. Next, the process proceeds to step S2102 to determine whether or not the content of the metronome flag MM is "1". If the result of this determination is "YES", the flow proceeds to step S2103 and FIG.
2 executes a metronome processing routine showing a flow,
Proceed to step S2104. On the other hand, step S2102
Is "NO", the process proceeds to step S2104 without executing step S2103. Next, step S
Proceeding to 2104, it is determined whether or not an automatic performance is being performed. If the automatic performance is being performed, the flow advances to step S2105 to execute the reproduction processing routine shown in FIG. 23, and then to step S2106. On the other hand, if the automatic performance is not being performed, the process proceeds to step S2106 without executing step S2105. Next, in step S2106, information corresponding to the interruption permission is written in the flag for interruption control. And C
The PU 3 ends this interrupt processing routine and resumes the interrupted processing.

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

Keyboard Channel Setting In this automatic performance device, key events detected from the keyboard 1 and panel events generated by operating the operation panel 7 are handled by being converted into MIDI events corresponding to the keyboard channels. When performing the keyboard, the player performs a keyboard channel designation switch BM ₁
Press the switch corresponding to the desired channel number in BM _{16 to} set the keyboard channel. When an operation is performed on the keyboard channel designation switch,
A panel event corresponding to the operation is detected by the operation panel interface 8. As a result, when the process proceeds to step S802 of the panel processing routine via step S406 of the main routine, the determination result is “YE
S ”, and proceeds to step S803. Then, in step S803, a keyboard channel switch processing routine whose flow is shown in FIG. 9 is executed. First, the process proceeds to step S901, and it is determined whether or not another keyboard channel designation switch is pressed in addition to the currently pressed keyboard channel designation switch. 1 player
If you are pressed only pieces of the keyboard channel designated switch BM _k determination result in 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, the process proceeds to step S903, where "1" is written to the channel number register LAST. Next, a register KBSW (LAST) (in this case, KBSW (i)) designated by the channel number register LAST among the keyboard channel designation registers KBSW (i) (i = 1 to NMAX).
(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, the process proceeds to step S906, where the LED lamp BM _k corresponding to the set keyboard channel number k is set.
Lights up. Then, the process returns to the main routine via the panel processing routine.

In this automatic performance apparatus, a plurality of MIDI channels can be set as keyboard channels. In this case, after the player presses the first keyboard channel designation switch, he / she presses the second keyboard channel designation switch before releasing his / her finger from the switch. In this case, by executing the keyboard channel switch processing routine as described above, first, the number of the keyboard channel corresponding to the first keyboard channel designation switch is set in the register KBSW.
Written to (1). Thereafter, when the process proceeds to the keyboard channel switch processing routine, the second keyboard channel designation switch is pressed down, so that the determination result in step S901 becomes “YES” and the step S901 is executed.
Proceeding to 904, the channel number register LAST is incremented. Then, the process proceeds to step S905, where the number of the second keyboard channel is set in the register KBSW (L
AST) (in this case, KBSW (2)). Then, among the LED lamps BM _k (k = 1 to 16), each LED lamp corresponding to the contents of the registers KBSW (1) and KBSW (2) is turned on (step S80).
6) Return to the main routine via the panel processing routine. Further, when there is a channel number to be set as a keyboard channel, the player sequentially inputs a desired channel number by pressing a new keyboard channel designation switch before releasing the finger from the currently pressed keyboard channel designation switch. I do. As a result, the same processing as described above is repeated, and all keyboard channel numbers are written into the keyboard channel designation register KBSW (k) (k = 1 to LAST), and the LED lamps corresponding to those channel numbers are turned on. I do.

Tone Setting by Tone Setting Unit 22 When a player operates a ten-key or an increment / decrement key in the tone setting unit 22 to input a tone number, when a panel processing routine is started via a main routine, the corresponding step is executed. In S803, FIG.
A timbre setting switch processing routine whose flow is shown as 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, the process proceeds to step S1002, where information "0" is written to the mode register MODE. Next, the process proceeds to step S1003, where the timbre number input by the timbre setting unit 22 is written to the timbre number register TC / SEL. Next, the process proceeds to step S1004, where the display 21 displays the contents of the tone color number register TC / SEL. Next, the process proceeds to step S1005, in which all the keyboard channels set at that time, that is, the keyboard channel register KBSW (k) (k = 1 to LAST)
, A program change event (tone color setting event) including the tone number set in the tone number register TC / SEL is created, and each is written to 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 step S501, the determination result in step S501 becomes "YES", and the
Proceed to 502. Then, from the MIDI buffer, the internal MI
The DI event is fetched and written to the event register EV, and the channel number of the fetched internal MIDI event is written to the MIDI channel register MCH.
Next, the process proceeds to step S503, where the event register EV
It is determined whether or not the event stored in is a note event. If the event written to the event register EV in step S502 is a program change event, the result of the determination in step S503 is "NO", and the flow advances to step S505. Then, a channel event processing routine whose flow is shown in FIG. 11 is executed.

First, the flow advances to step S1101 to write the mode number corresponding to the event set in the event register EV into the mode register MODE. If a program change event designating a tone number is set in the event register EV, “0” is written to the mode register MODE. Next, step S110
2 and the number set in the mode register MODE falls within the defined predetermined range (1 to 1 in this embodiment).
It is determined whether the number is 5). In this case, since the number “0” is out of the defined range, the determination result of step S1102 is “NO” and the
Proceed to 104. Then, the CPU 3 sends the MIDI event set in the event register EV, that is, in this case, the program change event created by executing the tone color setting routine to the 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 ends, the process returns to the MIDI processing routine and proceeds to step S506, where the content of the record flag REC is set to "1".
It is determined whether or not. In the case of the musical instrument mode, step S50
The determination result at 6 is "NO", and the process returns to the main routine.

When a plurality of keyboard channels are set, the timbre setting processing routine is executed,
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 thereafter fetched into the event register EV every time the MIDI processing routine is executed (step S502), and the channel event processing routine is executed, whereby the tone change circuit 9 is sent to the tone synthesis circuit 9. Is sent (step S1104). In this way, the timbre input by the timbre setting unit 22 is set for all keyboard channels.

In this automatic performance device, by operating the dial 51, the numerical values of control parameters such as volume, tone number, and effect set for each MIDI channel can be increased or decreased. it can. Hereinafter, this operation will be described.

A. Volume setting When performing volume setting by operating the dial 51,
The performer is, first, to the volume switch BC ₂ in the ON state. As a result, when the CPU 3 proceeds to the panel processing routine via the main routine, the CPU 3 proceeds to step S80.
In 3, a 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. Next, step S12
In step 02, information “1” corresponding to the volume setting mode is written to the mode register MODE. Next, the process proceeds to step S1203, where "0" is set in the relative value register REL.
Write. Next, the process proceeds to step S1204, and it is determined whether or not the content of the channel number register LAST is “1”. If the result of this determination is "YES", that is, if the number of keyboard channels is one, step S12
Go to 05. Then, the parameter setting register VALUE (i, j) (i = 1 to 5, j = 1 to
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, if a plurality of keyboard channels have been 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 via the panel processing routine.

Next, the player operates the dial 51 to set a desired volume. Here, when the player turns the dial 51 in the direction to increase the volume, the increment processing routine shown in FIG. 13 is executed in step S803 of the panel processing routine. First, the process proceeds to step S1301, where 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 in step S1301 is “NO” and the process proceeds to step S1302.
The content of the relative value register REL is incremented. Next, the flow advances to step S1303 to set an initial value "1" in the variable register i. Next, the process proceeds to step S1304, where the parameter setting register VALUE at that time is set.
In (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) (in this case, KBSW (i)
Register VALUE (1, KBSW) corresponding to (1))
(1)) is incremented. Here, before the increment is performed, the register VALUE (1, KBSW) is set.
If the volume value set in (1)) is already the upper limit value of the volume, the volume value is not incremented. Next, the process proceeds to step S1305, in which the parameter setting register VALUE (1, KBSW
Using the volume value set in (1)), a channel pressure event (volume control event) of the MIDI channel specified by the first keyboard channel register KBSW (1) is created, and the internal MIDI
Write to the MIDI buffer as an event. Next, the process proceeds to step S1306, where the variable register i is incremented. Next, the process proceeds to step S1307, and it is determined whether the content of the variable register i (in this case, i = “2”) is larger than the content of the channel number register LAST. If the result of this determination is "YES", step S1308 is performed.
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 is set 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 this is the case (step S1307). As described above, steps S1304 to S1307 are repeated until the determination result of step S1307 becomes "YES", the volume values are updated for all the set keyboard channels, and a channel pressure event based on the new volume value is created. Write to MIDI buffer. If the result of the determination in step S1307 is "YES" and the flow advances 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
The contents of the parameter setting register VALUE (MODE, KBSW (1)) corresponding to the mode specified by the DE (in this case, the volume setting mode) and corresponding to the first keyboard channel KBSW (1) are displayed. 61 is displayed, and the process returns to the main routine via 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 via the panel processing routine. Return to routine. In this case, the content of the relative value register REL displayed on the display 61 indicates the relative change (in this case, the increase) of the volume value for all the set keyboard channels.

On the other hand, when the dial 51 is turned in the direction of decreasing the volume, a decrement processing routine is executed via a panel processing routine. The flowchart of this 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 values for all the set keyboard channels are decremented (corresponding to step S1304), and a channel pressure event is generated (step S1305). Equivalent) is performed. Then, as in the case of the above-described increment processing routine, 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, when the dial 51 is rotated, a channel pressure event is created and written into the MIDI buffer as an internal MIDI event. As a result, when the processing proceeds to the MIDI processing routine via the step S402 of the main routine, the result of the determination in the step S501 becomes "YES", and the step S5 is executed.
Go to 02. Then, from the MIDI buffer, 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 to the event register EV, and the channel number of the extracted MIDI event is written to the MIDI channel register MCH. Next, the process proceeds to step S503 to determine whether or not 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 result of the determination in step S503 is “N
O ", and the process proceeds to step S505. Then, a 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, where the mode register MODE
Is set to the defined predetermined range "1"
It is determined whether or not the number is within the range of “5”. In this case, since the mode number “1” is within the defined range, the determination result of step S1102 is “YES” and the process proceeds to step S1103. Then, of the MIDI events generated by causes other than the dial operation, such as an externally supplied MIDI event, a channel event of the type specified by the mode register MODE (when MODE = "1", a channel pressure event ) Is taken out and written into the register VALUE (MODE, MCH) as a channel event to be newly set. In 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 according to the supplied channel pressure event. When step S1104 of the channel event processing routine ends, the MIDI
Returning to the processing routine, the process proceeds to step S206, in which it is determined whether or not the content of the record flag REC is "1".

When a plurality of keyboard channels are set, turning the dial rotates all the keyboard channels KBSW (i) (i = 1 to LAST) to register VALUE (MODE, KBSW).
The contents of (i)) are incremented (step S1304 of the increment processing routine) or decremented, and the register VALUE (MODE, KBSW)
(I) The channel event (MODE =
If "1", the channel pressure event is MID
The data is written to 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 thereafter fetched 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 according to the dial operation is performed for the tone generation channels corresponding to all the keyboard channels in the tone synthesis circuit 9.

B. Other parameter settings performer by dialing, after pressing the switch corresponding to the desired parameters of the switch BC ₂ -BC _4, by performing the dial operation, set the tone color number, other than the volume effect etc. Parameter It can be performed. In this case, the same processing as in the case of the volume setting described above is performed. That is, the player data "2" corresponding to the tone color set in the panel processing routine S803 is written in the mode register MODE is when the user presses the switch BC _2, when the user presses the switch BC ₃ corresponding to sound image positioning data "3" is written in the mode register mODE, if the user presses the switch BC ₄ data "4" corresponding to the setting of the reverb depth is written, when the user presses the switch BC ₅ to set the vibrato depth The corresponding data "5" is written. Thereafter, when a dial operation is performed, all the keyboard channels KB
For SW (i) (i = 1 to LAST), the type of register VAL specified by the 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
When the IDI processing routine is executed, the MIDI
The channel event written in the buffer is sent to the tone synthesis circuit 9 (step S1104), and parameters are set for the tone synthesis circuit 9 in accordance with the dial operation.

C. When the dial is operated after the tone number is input by the tone color setting unit 22. In this case, MODE = “0” is set, the increment processing routine is started, and the determination result of step S1301 is “Yes”, and step S1321 is set. Proceed to. Then, the contents of the velocity offset register VOFST (TC / SEL) corresponding to the tone color number TC / SEL are 12
It is determined whether it is smaller than 7. The result of this determination is "Ye
s ", the velocity offset register VOFST
(TC · SEL) is incremented (step S13)
22), and proceed to step S1323. Step S
If the determination result of 1321 is “No”, step S13
The process proceeds to step S1323 without executing step S22. Next, in step S1323, the contents of the velocity offset register VOFST (TC / SEL) are displayed on the display 6
1 and returns to the main routine. Thus, MOD
If 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 player presses the increment key 32 or decrement key 33 for tempo setting, a panel event indicating that these keys have been operated is detected via the operation panel interface 8. As a result, the CPU
3 in step S802 of the panel processing routine
The process proceeds to a tempo setting routine shown in FIG. 14, where 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).
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 ends, and the process returns to the main routine via the panel processing routine. Thereafter, based on the tempo data newly written to the tempo register TEMPO, the timing of the generation of the metronome sound is controlled.

Operation in Keyboard Performance When a player presses any key on the keyboard 1, a key press event corresponding to that 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 result of the determination in step S702 is “YES” and the process proceeds to step S703. Then, the note-on event corresponding to the key press event is sent to all the keyboard channels KBSW (i) (i = 1 to LA) set at that time.
ST) and writes them to the MIDI buffer as internal MIDI events. As a result, when the MIDI processing routine is started, the result of the determination in step S501 is "YES", and the flow proceeds to step S502.
Then, one of the internal MIDI events in the MIDI buffer is extracted and written into the event register EV, and the channel number of the extracted MIDI event is written into the MIDI channel register MCH. Next, the process proceeds to step S503 to determine whether or not the event stored in the event register EV is a note event. In this operation, the event is a note event,
Proceeding to step S504, a note event processing routine is executed.

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

When step S1509 ends, the note event processing routine ends, and the routine returns to the MIDI processing routine. On the other hand, if no free channels were found,
If the determination result of step S1504 is “NO”, MI is executed without executing steps S1505 to S1509.
Returning to the DI processing routine, in step S506, it is determined whether or not the content of the record flag REC is "1". If the determination result is "NO", the process returns to the main routine.

Next, when the player 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 proceeding to the key processing routine from step S404 of the main routine, the result of the determination in step S702 is "YES", and step S7 is performed in the same manner as in the case of the key press event described above.
03, Step S402 of the May routine, Steps S501, S502, and 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 into the note code register NC (step S1501),
The note velocity in the 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 result of the determination in 1503 is “NO” and the step S15
Proceeding to step 10, note code register ST for each sounding channel
The storage contents of 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
(K) = whether there is a number k that satisfies (1), that is, a tone corresponding to the note code NC is being produced,
Further, it is determined whether or not there is a sounding channel in a note-on state. If the result of this determination is “YES”, the flow proceeds to step S 1511, where the tone channel number k found in step S 1510 is stored in the tone assignment register A.
Write to CH. Next, in step S1512, information "2" indicating that the key is being released but the key is released is written into the channel status register ST (ACH) specified by the tone generation assignment register ACH. Next, the flow advances to step S1513 to send note-off information NOFF to the sound channel specified by the sound assignment register ACH in the tone synthesis circuit 9. As a result, the mute processing is performed in the sounding channel ACH. Then, when step S1513 ends, the note event processing routine ends, and the processing returns to the MIDI processing routine.
On the other hand, if the decision result in the step S1510 is "NO", the process returns to the MIDI processing routine without executing the steps S1511 to S1513. Then, as in the case where the key is pressed, the process returns to the main routine via step S506 or further step S507.

Processing for an External MIDI Event M from an external device via the 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 becomes “YES”, and the process proceeds to step S602. And the received MID
The channel number of the I event is stored in the channel number register MC.
Write to H. Next, the process proceeds to step S603, where the reception channel flag RC (MC
It is determined whether or not the content of H) is "1", that is, whether or not the received MIDI event is to be processed in this automatic performance device. The result of this determination is “YE
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 process returns to the main routine without executing the step S604. The received MIDI event written to the MIDI buffer is read out from the MIDI buffer when the MIDI processing routine is executed, and is used for controlling the musical tone synthesizing circuit 9, similarly to the above-mentioned MIDI event generated by playing the keyboard or operating the operation panel. used.

Generation of a metronome sound When a player turns on a metronome sound instruction switch 23, an 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
The information "1" for instructing the generation of the metronome sound is written in the LED, and the LED lamp 24 is turned on. As a result, thereafter, when the interrupt processing routine is executed, the determination result of step S2102 becomes "YES" and the
Proceeding to 2103, a metronome processing routine whose flow is shown in FIG. 22 is executed. First, step S2
Go to 201, count register MCN for metronome
The contents of T are decremented by "1". Next, the process proceeds to step S2202, and it is determined whether or not the content of the metronome sound count register MCNT has become “0”, that is, whether or not it is time to generate a metronome sound. If the result of this determination is “Yes”, step S22
The process proceeds to 03, and in the case of “No”, returns to the interrupt processing routine. Next, in step S2203, the program change event for the metronome sound is set to the channel number "1".
Music synthesis circuit 9 as a MIDI event corresponding to "6"
Supply to Next, the flow advances to step S2204 to send the note-on information NON corresponding to the channel number "16" to the tone synthesis circuit 9. As a result, in the tone synthesis circuit 9,
A metronome sound is generated as a musical sound corresponding to the MIDI channel "16". Next, in step S2205, the contents of the parameter setting register VALUE (2, 16), that is, the tone number originally set to restore the tone color setting of the MIDI channel "16" 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" is not dedicated to the metronome, but can be used as a tone channel for other timbres and musical tones, like the other channels. Next, the process proceeds to step S2206,
Write the contents of the tempo register TEMPO to the metronome count register MCNT. Then, the process returns to the interrupt processing routine. The above operation is repeated every time a predetermined time elapses, and the count register for the metronome 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.
Steps 2203 to S2206 are executed, and a metronome sound is generated.

(2) Playback Mode Setting of Playback Channel When playing a MIDI event from the performance data memory area in the RAM 5 and performing an automatic performance, the performer sets a playback channel. When the record switch 41 is not pressed, the record switch flag RECSW
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. Depending on the lighting state of the LED lamps LQi (i = 1 to 16), the player can determine which MID
Check whether the I channel is a reproduction channel.

When a MIDI channel which is not a reproduction channel is newly set as a reproduction channel, the performer selects a sequencer channel switch BMi (i = 1 to 1).
In 6), press the switch corresponding to the number of the channel to be set as the reproduction channel. When the ON event of the sequencer channel switch is detected via the operation panel interface 8, the CPU 3 executes the sequencer channel switch processing routine 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 to the variable register N. Next, the process proceeds to step S1602, and it is determined whether or not the content of the record switch flag RECSW is “0”. If the player has not pressed the record switch 41, RECSW = "0" (the reason will be described later), the result of the determination in step S1602 is "YES", and the flow advances 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 MIDI channel N is not set as a playback channel, RSW
(N) = “0”, the result of the determination in step S1603 is “NO”, and the flow advances to step S1604.
Then, “1” is written to the record flag RSW (N). Next, the process proceeds to step S1605, where the LED lamp L
Of the Qi (i = 1 to 16), the LED lamp LQN corresponding to the MIDI channel _N is turned on, and the process returns to the main routine via the panel processing routine.

To exclude a MIDI channel set as a reproduction channel from the reproduction channels, the performer presses the sequencer channel switch BMi corresponding to the MIDI channel. Here, when 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 is executed.
The determination result of Step 603 is “NO”, and Step S160
Go to 7. Then, the reproduction flag PSW (N) (= PSW
Write (0) to (i)). Next, step S160
8, and among the LED lamps LQi (i = 1 to 16), the LED lamp L corresponding to the MIDI channel N (= i)
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 a start switch processing routine 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 determination result in step S1701 is "NO", and the flow advances to step S1702. Then, the start flag STA
It is determined whether or not the content of RT is “0”. If the result of this determination is "YES", the flow proceeds to step S1703 and "1" is written to the start flag START. Next, the flow advances to step S1704 to perform initialization processing for reproduction. By this initial setting processing, the first duration data is read from each track corresponding to the reproduction channel in the performance data memory area in the RAM 5, and the duration register DT corresponding to each reproduction channel i is read.
(I) is written. 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" when the start switch 42 is pressed, that is, if the start switch 42 is pressed during the automatic performance, step S of the start switch processing routine is executed.
When proceeding to 1702, the judgment result is "NO",
The process returns to the main routine via the panel processing routine without executing steps S1703 and S1704.

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

Next, in step S2303, the MID
Duration register DT corresponding to I channel i
(I) is decremented. Next, the flow advances to step S2304 to determine whether or not the content of the duration register DT (i) has become "0" or less. If the result of this determination is “NO”, the flow proceeds to step S2309. On the other hand, the determination result of step S2304 is “YES”
If it becomes, the process proceeds to step S2305,
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 event of the MIDI channel i to be read next is read from the performance data memory area and written to the duration register DT (i).

Next, the flow advances to step S2306 to determine whether or not 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 the dial priority switch 52 is turned off. When PRSW = "1", LED5
Of the 3 and 54, only the LED 53 is turned on,
When PRSW = "0", only the LED 54 is turned on. The processing in response to the operation of the dial priority switch 52 is performed in step S of the panel processing routine.
This is executed at 803.

If the contents of the dial priority flag PRSW are "1", the result of the determination in step S2306 is "Y".
ES ”, and proceeds to step S2307. Then, it is determined whether or not 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, where the MIDI event read from the performance data memory area is written to 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 proceeds 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 events among the MIDI events reproduced from the performance data memory area are written in the MIDI buffer, and the channel events such as the channel pressure event and the program change event are performed. 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, and a channel event is generated and written into the MIDI buffer. Also,
If a note event is generated by playing the keyboard, or a MIDI event is supplied from an external device,
Those MIDI events are written to the MIDI buffer.

MIDI written to MIDI buffer
The event is then fetched into the event register EV by executing the MIDI processing routine (step S502). And the event register EV
If the MIDI event fetched into the event register is a note event, a note event processing routine is executed, and a parameter corresponding to the note event fetched into the event register EV is sent to the tone synthesis circuit 9 (step S1509 or S1513). . If the MIDI event fetched into the event register EV is a channel event, a channel event processing routine is executed, and parameters corresponding to the channel event fetched into the event register EV are stored in the tone synthesis circuit 9.
(Step S1104). In this way PR
When SW = "1", only the note event among the reproduction events from the performance data memory area is used for controlling the tone synthesis circuit 9. The volume control, tone color control and the like of the tone synthesis circuit 9 are performed by dial operation or the like, and 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 decision result in the step S2306 becomes "NO", and the process advances to the step S2308 to convert the MIDI event read from the performance data memory area into the MIDI event.
Write to DI buffer. Then, step S2309
Proceed to. The event written to the MIDI buffer is
Thereafter, by executing the MIDI processing routine, the event is taken into the event register EV (Step S).
502). Then, by executing the note event processing routine or the channel event processing routine, parameters corresponding to the event fetched into the event register EV are sent to the tone synthesis circuit 9. In this way, when PRSW = "0", all MIDI events reproduced from the performance data memory area are used for controlling the tone synthesis circuit 9.

Next, at step S2309, the variable register i is incremented. Next, step S231
The process proceeds to 0, and it is determined whether or not i> 16. If this determination is "NO", the flow returns to step S2032,
The same processing as described above is performed for a new MIDI channel i. Then, the determination result of step S2310 is “YE
If "S" is reached, the process proceeds to step S2311. Then, it is determined whether or not the reproduction of the MIDI event has been completed for all the reproduction channels. If the result of this determination is "NO"
In the case of, the reproduction processing routine ends, and the processing returns to the interruption processing routine. Then, after the interruption processing routine ends, the processing interrupted by the interruption processing is resumed. Thereafter, each time a predetermined time elapses, an interrupt processing routine is executed, 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 via the interruption processing routine, the result of the determination in step S2311 is "YES".
Becomes As a result, the flow advances to step S2312 to write "0" in the start flag START, and returns to the interrupt processing routine. Thereafter, even if the interrupt processing routine is executed, the reproduction processing routine is not executed since START = "0". Thus, the automatic performance ends.

When the player 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, proceed to step S2001,
It is determined whether or not the content of the start flag START is "1". If the result of this determination is “Yes”, that is, if an automatic performance is currently being performed, step S2
In step 002, “0” is written to the start flag START. Next, the process proceeds to step S2003, in which the tone generation channels in the tone generation state in the tone synthesis circuit 9, that is, the corresponding channel status registers ST
The note-off information NOFF is supplied to all sounding channels i in which the content of (i) is “1”. As a result, the tone synthesis circuit 9 performs a silencing process for all tones that were being sounded. Then, step S200
Proceed to 4. On the other hand, the stop switch 4
If No. 3 is pressed, the determination result of step S2001 is “No”, and steps S2002 and S200
Then, the process proceeds to Step S2004 without executing Step 3. Next, in step S2004, it is determined whether or not the content of the record flag REC is "1". REC = "0"
In this case, the result of this determination is “No”, and the
The stop switch processing routine ends without performing steps 2004 to S2007.

(3) Reproduction / Recording Mode In the reproduction / recording mode, the reproduction process of the MIDI event in the performance data memory area in the RAM 5 and the MIDI event generated by the keyboard performance or the operation of the operation panel or the external MIDI event to the RAM 5 are performed. Is performed in parallel with the recording process. Before executing the processing in the reproduction / recording mode, the performer sets the reproduction 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 At the time of recording, the player first presses the record switch 41. As a result, the ON event of the record switch 41 is detected via the operation panel interface 8, and the CPU 3 proceeds to step S of the panel processing routine.
At 803, a record switch processing routine whose flow is shown in FIG. 18 is executed. First, step S1801
In, it is determined whether an ON event of the record switch 41 has been detected. In this case, step S180
The judgment result of step 1 becomes "Yes" and step S1802
To write "1" in the record switch flag RECSW. Next, the process proceeds to step S1803, where the record flag RSW corresponding to each channel at that time is
(I) The contents of (i = 1 to 16) are determined, and RSW (i)
All channel numbers i satisfying "1", that is, the numbers of the MIDI channels already set as recording channels at that time are detected. And L
The LED lamp corresponding to the detected channel number i among the ED lamps LQi (i = 1 to 16) is turned on. Then, the process returns to the main routine via the panel processing routine. The player confirms which MIDI channel is the recording channel by checking the lighting state of the LED lamps LQi (i = 1 to 16).

When the player releases his / her 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 via steps S1801 and S1804. Then, “0” is written to the record switch flag RECSW. Then step S
Proceeding to 1805, the contents of the reproduction flag 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 MIDI channel number 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 performing 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. When the record switch 41 is pressed, 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 it is desired to exclude a MIDI channel set as a recording channel from recording channels, the player presses the sequencer channel switch BMi corresponding to the MIDI channel while holding down the record switch 41. 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 processing, the MIDI channel desired by the player 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 processing described above, the player switches the record switch 41.
And the start switch 42 are both pressed. As a result,
When the record switch 41 is pressed, REC
SW = "1". Further, 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 step 1 is “Yes”, and step S1705 is performed.
Proceed to. Then, the content of the record flag REC is "0".
Is determined. If this determination is "YES", the flow proceeds to step S1706, and "1" is written to the start flag START and the record flag REC. Next, the process advances to step S1707 to perform initialization processing of various pointers and the like for recording. Then, the process returns to the main routine via the panel processing routine. 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, the process proceeds to step S1705 of the start switch processing routine, and the determination result is "NO". And returns to the main routine via the panel processing routine without executing steps S1706 and S1707.

When START = "1",
As in the case of the above-described reproduction mode, when the interruption processing routine is executed thereafter, the reproduction processing routine is executed in step S2105. Then, 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 set to M.
The data is sequentially written to the IDI buffer. When a MIDI event occurs due to a keyboard operation or an operation of the operation panel, or when a MIDI event is received from an external device, the MIDI event is also transmitted to the MIDI device.
The data is sequentially written to the DI buffer. Thus, MI
As a result of writing the MIDI event to the DI buffer,
When the MIDI processing routine has been executed, step S5 is executed.
The judgment result of “01” is “Yes”. And MIDI
The MIDI event is extracted from the buffer and written into the event register EV, and the MIDI channel number of the MIDI event is stored in the channel number register M.
It is written to CH (step S502). Then, a note event processing routine (step S50) is performed based on the MIDI event captured in the event register EV.
4) Alternatively, a channel event processing routine (step S505) is executed, and parameters corresponding to the channel event taken into the event register EV are sent to the tone synthesis circuit 9. As described above, the MIDI event read out from the RAM 5 and the MIDI event generated by the keyboard operation or the operation of the operation panel, or the MIDI event supplied from the external device, are transmitted.
It is taken out of the buffer and the control of the tone synthesis circuit corresponding to each is executed.

Next, when the flow advances to 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, the process proceeds to step S1901 to determine whether 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 or not the MIDI event extracted from the MIDI buffer and written in the event register EV is a MIDI event to be recorded. If the result of this determination is “Yes”, the flow proceeds to step S1902. Then, the elapsed time from when the MIDI event was written before that to the buffer track corresponding to the MIDI channel MCH in the RAM 5 until the present time 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. Thereafter, the same processing is performed every time the MIDI processing routine is started.

When all the MIDI events of the reproduction channel are 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-described reproduction mode, and START =
It becomes "0" and the automatic performance ends. When the player presses the stop switch 43, a stop switch processing routine is executed, and the process proceeds to step S2004. If REC = “1”, step S
The judgment result of 2004 becomes "Yes" and the step S2
In step 004, “0” is written to the record flag REC. Next, proceeding to step S2006, note-off information and an end code are written to buffer tracks corresponding to all recording channels. In step S2007, the contents of the buffer tracks corresponding to the respective recording channels are written into the performance data memory areas corresponding to the respective MIDI channel numbers. Then, the stop switch processing routine ends, and the process returns to the main routine. Thereafter, MI
Even if any MIDI event is written to the DI buffer and the MIDI processing routine is executed, REC
= "0", the recording processing routine is not executed.
Thus, the recording ends. If the stop switch 43 is pressed before the automatic performance ends, steps S2002 and S20 of the stop switch processing routine are performed.
After step 03, the processing after step S2004 is executed, and the recording ends.

As a result of the above processing being performed, the RAM
5, the contents of the performance data memory area are updated as follows. a. A performance data memory area corresponding to a MIDI channel set as a recording channel but not set as a reproduction channel. MIDI events that existed before recording in this performance data area are erased by recording. And during recording, keyboard 1
Alternatively, when a MIDI event is generated by operating 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 to the performance data memory area. b. Performance data area corresponding to a MIDI channel set as a recording channel and a playback channel The content of the performance data area is a MIDI event newly generated during operation in the playback / recording mode with respect to the MIDI event stored before recording. Are updated to the contents obtained by merging the one corresponding to the MIDI channel number. More specifically, it is as follows. b1. When a keyboard channel that matches the recording channel is set If a keyboard performance is performed during recording, the contents of the performance data memory area corresponding to the keyboard channel will be changed to the contents stored in the keyboard before recording. Is a merged note event generated by Recording is performed with the dial priority flag PRSW being "1".
If the dial 51 is operated at that time, the channel event generated in response to the dial operation is written to 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 deleted. On the other hand, dial priority flag PRSW
Is recorded with "0", and the 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 an 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,
If, while automatic playing, it is possible to add the desired performance data, the effect is obtained that improves editing efficiency of performance data. Further, according to the present invention, there is obtained an effect that merge recording can be performed based on performance data obtained by setting effects different from performance data already stored in the storage means.

[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 plan view showing an operation panel of the embodiment.

FIG. 3 is a diagram for explaining routines executed in the embodiment and their relationships;

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

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G10H 1/00 101-102

Claims (1)

(57) [Claims] 1. Performance data storage means for storing performance data including at least note event data for controlling the generation of musical tones and control data for controlling the generation mode of the musical tones, and an operator for controlling at least the generation of musical tones And a performance control including a control for controlling the generation of the musical tone, and operating the control for controlling the generation of the musical tone with the note event data according to the operation of the control for controlling the generation of the musical tone. and playing means for outputting control data respectively as performance data in accordance with a reproducing means for sequentially reading out the performance data from the performance data storage means, and selecting means, when the first option is selected by the selection means And extracting and outputting only note event data from the performance data read by the reproducing means, and selecting the second option by the selecting means. Is selected, the extracting means for directly outputting the performance data read by the reproducing means, the buffer storing means for sequentially storing the output of the extracting means and the performance data output by the playing means, and the buffer storing means Writing means for writing the performance data stored in the buffer into the performance data storage means, and forming a musical tone in accordance with the data in the buffer storage means.
Sound generating means , wherein when the first option is selected by the selecting means, note event data of the performance data read from the performance data storing means is stored in the buffer storing means; An automatic performance apparatus, wherein performance data output by the performance means is stored, and control data of the performance data read from the performance data storage means is not stored.