JP2639271B2 - 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 capable of recording both performance data for automatic performance and performance data for automatic accompaniment.

[0002]

2. Description of the Related Art An automatic accompaniment function is provided for generating musical tones produced by a performer, detecting the tonality of the performance based on the tones to be produced, and automatically providing accompaniment tones according to the tonality. Automatic performance devices are known. 2. Description of the Related Art Conventionally, when recording performance data in an automatic performance apparatus of this type, all musical sound data including an accompanying accompaniment sound has been recorded in a memory.

[0003]

When all tone data including the accompaniment sound assigned as described above is stored in the memory, the tone data of the automatic accompaniment (assigned accompaniment tone) in the memory after the storage is stored. Can be rewritten and changed to a desired accompaniment sound. However, there is a problem that a memory having a large storage capacity is required to store all musical sound data including musical sound data of automatic accompaniment. The present invention has been made in view of the above-described circumstances, and even when the capacity of a memory that can be used for storing performance data is small, storage of all tone data including performance data necessary for automatic accompaniment tone formation is performed. It is an object of the present invention to provide an automatic performance apparatus that can perform the automatic performance.

[0004]

According to the present invention, there is provided a performance data generating means for generating performance data , a musical sound generating means for generating a musical tone in accordance with the performance data, a storage means for storing the performance data, and storing the performance data. Write to storage
And writing means, reading for reading the performance data from said storage means
Output means and an accompaniment pattern for forming performance data for accompaniment.
Accompaniment data storage means for storing turns, and performance data generation
By the performance data generated by the raw means or by the reading means
The sum based on the performance data read from the storage means
The sound is specified, and the accompaniment pattern is stored in the accompaniment data storage unit.
And converts the pitch based on the specified chord.
Accompaniment data forming means for forming and outputting performance data
Consists of a, the a mode of transfer of performance data between each unit, output by (a) the performance data generated by the performance data generating means is supplied to the accompaniment data forming means, the accompaniment data forming means the manual performance data
Writing into the storage means by
Read out the playing data by the reading means and
A first aspect supplied to generating means, written to the storage means by the performance data is the writing unit generated by (b) the performance data generating means
And the performance read by the reading means.
Data is supplied to the accompaniment data forming means, performance data output from the accompaniment data forming means the tone onset
It is characterized by having both of the second aspect supplied to the raw means .

[0005]

According to the above arrangement, the performance data according to the first aspect is provided.
Data is exchanged , the accompaniment data forming process is performed based on the performance data generated by the performance data generating means.
The performance data for the accompaniment is formed by the steps, and the performance data for the accompaniment is written into the storage means by the writing means .
The written performance data is sent to the reading means to the generating means.
Therefore, it is read and supplied. In contrast, the second state
When performance data is exchanged by
The performance data generated by the performance data generation means is stored in the writing means.
Therefore, it is written to the storage means and read by the reading means.
And supplied to the accompaniment data forming means.
Performance data for accompaniment is formed based on the performance data.
It is output to the tone generator.

[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 a 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) a performance function for generating a MIDI event in response to operation of a performance operator and performing a performance based on the MIDI event; and (b) generating a MIDI event for accompaniment sound in response to operation of the performance operator, and A first accompaniment function for performing an accompaniment based on an event Note that an operation mode in which an operation is performed by the first accompaniment function is referred to as a PRE mode. (C) M generated by the above function (a) or (b)
A recording function for recording an IDI event in the storage means. (D) A performance function for reading performance data from the storage means, outputting the data as a MIDI event, and performing a performance based on the MIDI event. (E) A MIDI function output by the function (d). A second accompaniment function of generating an accompaniment sound based on a MIDI event of a specific channel among the events. An operation mode in which the operation is performed by the second accompaniment function is referred to as a POST mode. Further, in the present embodiment, the player can select the first and second accompaniment functions, but cannot select both functions. Further, the automatic performance device can make the following designations for the functions (a) to (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) MIDI event channel number stored in the storage means as performance data (hereinafter referred to as recording channel)
Note that the PRE mode and POST mode
For details, see the operation of the entire automatic accompaniment device described later.
As will be explained at any time, the operation of each mode
The outline is as follows. Automatic accompaniment based on the chord specified by the operation of the PRE mode performance operator
The performance data of the sound itself is stored in the storage means, and the stored data is stored.
By reading the performance data
Generate an automatic accompaniment sound. Only the performance data based on the operation of the POST mode performance operator is stored in the storage means.
Memorize the chord performance data based on the memorized performance data.
Data to generate an automatic accompaniment sound.

[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 it as a key event. Reference numeral 3 denotes a CPU (Central Processing Unit), which controls the entire apparatus including the functions (a) to (e). 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. A specific storage area in the ROM 4 is an automatic performance pattern memory area, and stores rhythm patterns corresponding to various rhythm styles. 5 is a RAM, and a CPU
3 is used as a storage area for control data used for the control performed by the control unit 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 for transmitting a MIDI event to be reproduced by the automatic performance device to an external device, and a MIDI ID supplied from the external device.
The I event is received. 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. An operation panel interface 8 detects an operation performed on each operation element of the operation panel 7 and outputs the operation as a panel event.
The display control of each display of the operation panel 7 is performed in accordance with the command from. 9 is a tone synthesis circuit for synthesizing a tone signal;
Reference numeral 10 denotes a sound system which generates a tone signal output from the tone synthesis circuit 9 as a tone. B1 is MI
A DI event bus, which interconnects the CPU 3, the MIDI interface 6, the tone synthesis circuit 9, and the sound system 10, and is used as a communication path for transmitting and receiving 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 interface 2
Is output from the CP via the data bus B2.
After being taken into U3 and converted into a MIDI event by the CPU 3, it is 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 setting section,
It consists of a numeric keypad for inputting a tone color number, an increment key for increasing / decreasing the input tone color 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. 71 is an ABC switch,
When this switch is pressed, the PRE mode, POST mode, and O which does not generate the accompaniment sound are set.
One of the FF modes is set as an operation mode relating to automatic accompaniment. The LED lamps 72 and 73 are provided to display an operation mode related to automatic accompaniment. When the mode is OFF, the LED lamps 72 and 73 are turned off. When the PRE mode is set, the LED lamps 72 and 73 are turned off. Only the LED is lit, and when the POST mode is set, only the LED lamp 73 is lit.

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". Tempo register TEMPO: This tempo register TEM
Automatic accompaniment is performed at a tempo according to the content of the PO. ABC count register ABCCNT: The ABC count register ABCCNT is used as timekeeping means for controlling the generation timing of the ABC sound. 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. 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. 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)
A flag for storing 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 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. Mode flags PRE and POST: ABC switch 7
The operation of 1 updates the contents of these flags.
In addition, an operation mode related to automatic accompaniment is determined according to the contents of these flags as described below. PRE = "0", POST = "0" ... OFF mode PRE = "1", POST = "0" ... PRE mode PRE = "0", POST = "1" ... POST mode Root register ROOT and Code type register TY
PE: These registers ROOT and TYPE include
Data indicating the root and chord type of a chord used when performing automatic accompaniment is stored.

<B> Operation of the Embodiment <Outline of Operation> FIG. 3 illustrates main routines executed by the CPU 3 and the relationship between these routines. In FIG. 3, SEQ indicates a sequencer for controlling access to the performance data memory area and the buffer track area in the RAM 5. 4 to 21 are flowcharts showing the specific processing contents of each routine executed by the CPU 3, FIG. 4 is a flowchart of a main routine, and FIGS. 5 to 18 are executed with the execution of the main routine. FIGS. 19 to 21 are flowcharts of each routine executed by the CPU 3 as interrupt processing. 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 device 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. MIDI events received from the external device are stored in a MIDI buffer by an external MIDI processing routine. MI
The MIDI event stored in the DI buffer is the MID
The note event in the MIDI event is delivered to the note event processing routine, and the channel event is delivered to the channel event processing routine. Then, a parameter based on the note event is generated by the note event processing routine, and parameters for tone setting, volume setting, etc. are generated by the channel event processing routine,
Each is supplied to the tone synthesis circuit 9. When a keyboard operation is performed while the PRE mode is set, a chord is determined based on a key press event by a key processing routine, and information specifying the root note and chord type is A.
Delivered to the BC processing routine. Then, note events for accompaniment sounds according to a predetermined automatic performance pattern are sequentially generated by the ABC processing routine, and are stored in the MIDI buffer. The note events for accompaniment sounds stored in the MIDI buffer are transferred to a note event processing routine, and the note event processing routine controls the tone synthesis circuit based on the note events, and performs automatic accompaniment.

(2) Reproduction mode (START = "1",
(REC = “0”) Every time a predetermined time elapses, a reproduction processing routine (not shown in FIG. 3) is executed, 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. M corresponding to the playback channel
It is written to the MIDI buffer as an IDI event. If there is a keyboard performance, operation of the operation panel 7, reception of a MIDI signal from an external device, or the like, a MIDI event generated by the operation is also written to the MIDI buffer. Then, as in the case of the musical instrument mode, the MI
MIDI events are sequentially read from the DI buffer,
The control of the tone synthesis circuit 9 is performed. When the POST mode is set, when a note event of a specific MIDI channel is reproduced and written into the MIDI buffer, the note event is taken out of the MIDI buffer by executing the MIDI processing routine, and the note event processing routine is executed. Handed over to Then, the chord is determined by the note event processing routine based on the passed note event, and information specifying the root note and chord type is passed to the ABC processing routine. Then, note events for accompaniment sounds according to a predetermined automatic performance pattern are sequentially generated by the ABC processing routine, and are passed to the note event processing routine.
The note event processing routine controls the tone synthesis circuit 9 based on the note event, and performs automatic accompaniment.

(3) Recording / playback mode (START =
“1”, REC = “1”) A recording processing routine (not shown in FIG. 3) 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 is 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. When the PRE mode is set, similarly to the case of the musical instrument mode described above,
A chord is determined based on a key press event generated by a keyboard operation, and information specifying its root note and chord type is passed to the ABC processing routine. And AB
By the C processing routine, note events of accompaniment sounds according to a predetermined automatic performance pattern are sequentially generated and stored in the MIDI buffer. The note events of the accompaniment sounds stored in the MIDI buffer are transferred to a note event processing routine, and the note event processing routine synthesizes a tone corresponding to the note event, and generates an automatic accompaniment sound. When the POST mode is set, a key press event generated by a keyboard operation is sent directly to the MIDI buffer (information on the accompaniment key range is MID
Through the MIDI processing and the note event processing, the key press information other than the accompaniment key range is subjected to musical tone formation and sound generation processing for the note information. The note information of the accompaniment key range is transferred from the note event processing routine to the ABC processing routine, where an automatic accompaniment sound is added. After that, the automatic accompaniment sound is transmitted again to the note event processing routine as a note event of the accompaniment sound, and the tone formation,
A pronunciation process is performed. Therefore, after MIDI processing, SE
What is stored in Q (sequencer) is the note event that is the basis of the automatic accompaniment output to channel 9.

(4) Edit Mode By operating a predetermined operation element on the operation panel 7, an edit mode is started. In this edit mode, the RAM 5 is operated in accordance with the operation of the operation panel 7.
The individual performance data stored in the performance data memory area is updated.

<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 to 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. 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 S404 to start a key processing routine whose flow is shown in FIG. 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 not described in detail, this sounding channel processing is not limited to the sounding channel number k of the sounding channel of the sounding synthesizing circuit 9 in which the level of the sounding sound being sounded has fallen below a predetermined value.
Is detected, and information "0" indicating an empty channel is written into the channel status register ST (k) corresponding to the detected sounding channel. Next, the process proceeds to step S406, where a sequence data edit routine whose flow is shown in FIG. 11 is started. Then, in step S1101, it is determined whether or not an edit point event indicating performance data to be updated in the RAM 5 has been input. If the result of this determination is "Yes", the processing after step S1102 is executed and the process returns to the main routine, and if "No", the process returns to the main routine as it is. Next, when returning to the main routine, step S4
In step 07, 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. Next, the process proceeds to step S802, and it is determined 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 result of this determination is “YES”, step S80
Proceeding to step 3, execute a routine corresponding to the detected panel event and return to the main routine. If "NO", return to the main routine without step S803. Thereafter, the CPU 3 repeats steps S402 to S407.

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. The process advances to step S2102 to determine whether the content of the ABC count register ABCCNT has become "0". If the result of this determination is “YES”, step S21
The program proceeds to 03, executes an ABC processing routine whose flow is shown in FIG. 20, and proceeds to step S2104. On the other hand, step S
If the determination result in 2102 is “NO”, step S21
No. 03, and the process advances to step S2104. Next, in step S2104, the content of the ABC count register ABCCNT is decremented by "1". Next, the process proceeds to step S2105, where the start flag S
It is determined whether or not the content of TART is "1", that is, whether or not the automatic performance is being performed. If the result of this determination is “YES”, the flow proceeds to step S2106 to execute the reproduction processing routine shown in the flow of FIG. 21, and then proceeds to step S2107. On the other hand, the determination result of step S2105 is “NO”
In the case of, step S2106 is not executed and step S2106 is executed.
Proceed to 2107. Next, in step S2107, the information corresponding to the interruption permission is written in the flag for interruption control. Then, the CPU 3 ends this interrupt processing routine and resumes the interrupted processing.

(1) Musical 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 musical 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 apparatus, 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 (LAST)) 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, in step S906, LED lamp BM _k corresponding to the number k of the set keyboard channel
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.

Setting of tone color, volume, etc. When various controls for tone color setting, volume setting, etc. on the operation panel 7 are operated, a panel event corresponding to the operation is detected by the operation panel interface 8. As a result, in step S803 of the panel processing routine, a routine corresponding to the operated operator is executed, a channel event for tone setting, volume setting, and the like is created, and a MIDI event corresponding to a keyboard channel is stored in the MIDI buffer. Written. As a result, when the MIDI processing routine is executed, the determination result of step S501 becomes “YES”, and the process proceeds to step S502. Then, a MIDI event is extracted from the MIDI buffer 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, where the event register E
It is determined whether or not the MIDI event in V is a note event. If a channel event for tone setting, volume setting, etc. is stored in the event register EV, the result of this determination is "NO" and the flow proceeds to step S505. Then, a channel event processing routine (detailed flow is not shown) is executed, and the channel event in the event register EV is sent to the tone synthesis circuit 9. The channel event is held by the tone synthesis circuit 9 as a tone control parameter corresponding to the MIDI channel. Thereafter, when a tone generation instruction corresponding to the MIDI channel is given from the CPU 3, the channel event is used for tone control. . Channel event processing routine (step S50)
When 5) ends, the process advances to step S506 to determine whether the record flag REC is "1". If the determination is "NO", the process returns to the main routine.

When the player presses the ABC switch 71, a panel event corresponding to the operation is detected. In step S803 of the panel switch processing routine, the ABC switch processing routine shown in FIG. Be executed. First, the process proceeds to step S1001, where it is determined whether the content of the mode flag PRE is "1". The result of this determination is “N
In the case of "O", the flow proceeds to step S1002, and it is determined whether or not the content of the mode flag POST is "1". If this determination result is “NO”, that is, the ABC mode before the ABC switch 71 is pressed is set to the OFF mode (PRE =
If “0”, POST = “0”), the flow advances to step S1003 to write “1” to the mode flag PRE. As a result, the PRE mode (P
RE = "1", POST = "0") are set. Next, the process proceeds to step S1004, where L corresponding to the PRE mode is set to L.
The ED lamp 72 is turned on, and the process returns to the main routine. P
When the ABC switch 71 is pressed while the RE mode (PRE = "1", POST = "0") is set, step S100 of the ABC switch processing routine is performed.
1 is “YES”, and the result in the step S1007 is increased.
Proceed to. By writing “0” to the mode flag PRE and “1” to the mode flag POST, AB
The POST mode is set as the C mode. Next, in step S1008, the LED lamp 72 is turned off, the LED lamp 73 corresponding to the POST mode is turned on, and the process returns to the main routine. POST mode (PRE
= “0”, POST = “1”), when the ABC switch 71 is pressed, the determination result of step S1001 in the ABC switch processing routine is “NO”, and the determination result of step S1002 is “YES”.
And the process proceeds to step S1005. Then, by writing into the mode flag POST, the OFF mode is set as the ABC mode (PRE = "0", POST = "0").
Set. Next, the process proceeds to step S1006, where the LED lamp 73 is turned off, and the process returns to the main routine. Thereafter, similarly, every time the ABC switch is pressed, the ABC mode is set to P
It changes in the order of RE → POST → OFF → PRE →.

Tempo setting When the player presses the increment key 32 or the 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, in which 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 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 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. Next, step S704
To determine whether the content of the mode flag PRE is "1". If the result of this determination is "YES", then step S
Proceeding to 705, a chord is determined based on the currently detected key press event, each data representing the root and chord type of the chord is written to the root register ROOT and the chord type register TYPE, and the process returns to the main routine. . On the other hand, the determination result of step S704 is “NO”
In step S706, if POST = "1" and the note-on event created in step S703 is a note-on event in the accompaniment key range,
The note event is written to the MIDI buffer as a MIDI event of channel number "9", and the process returns to the main routine.

As described above, when the note-on event is set to MI
When the data is written into the DI buffer, when the MIDI processing routine is started, the determination result in step S501 becomes “YES” and the process proceeds to step S502. And
While taking out one of the internal MIDI events in the MIDI buffer and writing it to the event register EV,
MIDI channel number of MIDI event
Write to channel register MCH. Then step S
Proceeding to 503, it is determined whether or not the event stored in the event register EV is a note event. Step S5
If the note-on event is extracted from the MIDI buffer and written to the event register EV in 02, the determination result of step S503 becomes "YES" and the process proceeds to step S504. Then, a note event processing routine whose flow is shown in FIG. 13 is executed.

First, the flow advances 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 sounding channels of the tone synthesis circuit 9. If this determination is "YES", the flow proceeds to step S1505. If "NO", the process proceeds to step S152.
Proceed to 1. Next, in step S1505, any one of the available channels is written to the tone generation assignment register ACH. Next, the process proceeds to step S1506, where information "1" indicating that the channel is being depressed is written to the channel status register ST (ACH) corresponding to the contents of the tone generation assignment register ACH. Next, in step S1507, the contents of the note code register NC are written to the note code register STNC (ACH) for each sounding channel specified by the sounding assignment register ACH. Next, the flow advances to step S1508 to generate a MIDI channel number register AMC (ACH) for each sounding channel specified by the sounding assignment channel register ACH.
Is written in the MIDI channel register MCH.
Next, the process proceeds to step S1509, where the CPU 3 sets the MIDI channel stored in the MIDI channel register MCH for the sound generation channel corresponding to the above-described ACH in the tone synthesis circuit 9.
It sends a DI channel number, a note code stored in the note code register NC, a note velocity stored in the note velocity register NV, and a note-on signal for instructing sound generation. As a result, a tone corresponding to the note code and the note velocity given from the CPU 3 is formed and emitted by the tone generation channel ACH of the tone synthesis circuit 9. Here, the tone synthesis circuit 9 stores control parameters such as timbre and volume for each MIDI channel as described above. To control the formation of musical tones.

Next, in step S1521, it is determined whether or not the content of the mode flag POST is "1". If the determination is "YES", the flow proceeds to step S1522. If the determination is "NO", the flow returns to the MIDI processing routine. Next, in step S1522, it is determined whether the content of the MIDI channel register MCH is "9". If this determination result is "YES", the flow proceeds to step S1523 to determine a chord based on the note code in the note code register NC, and stores each data representing the root and chord type of the chord in the root register ROOT and the chord. Write to each of the type registers TYPE. Then, the note event processing routine is ended and the processing returns to the MIDI processing routine. On the other hand, if the decision result in the step S1522 is "NO", the step S1523 is executed without executing the MIDI.
Return to the processing routine. Then, when returning to the MIDI processing routine, in step S506, it is determined whether or not the content of the record flag REC is "1". If the determination is "NO", the process returns to the main routine.

Next, when the player releases the key pressed 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 main routine, step S501, step S502, and step S503 of the MIDI processing routine, 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 to the note code register NC (step S1501), and the note velocity in the note-off event is written to the note velocity register NV (step S1502).

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,
In addition, it is determined whether or not there is a sounding channel in a note-on state. If this determination is "YES", the flow proceeds to step S1511. If "NO", the flow proceeds to step S15.
Proceed to 21. Next, in step S1511, the number k of the sound channel found in step S1510 is written to the sound assignment register ACH. Next, the process proceeds to step S1512, where the channel status register ST (AC
In H), information “2” indicating that the key is being sounded but the key is released is written. Next, the process proceeds to step S1513,
The note-off information NO for the sounding channel specified by the sounding assignment register ACH in the tone synthesis circuit 9
Send FF. As a result, the mute processing is performed in the sounding channel ACH.

Then, when the flow advances to step S1521, P
If OST = "1" and MCH = "9", the process proceeds to step S1523. When the note code in the note-on state changes, the contents of the root register ROOT and the code type register TYPE are updated based on the new note code, and the note event processing routine ends and returns to the MIDI processing routine. .
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 is “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, proceeding to step S603, 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 Accompaniment Sound When the PRE mode is set as an operation mode for automatic accompaniment, a MIDI event of an accompaniment sound is generated in response to a key pressing operation, and automatic accompaniment is performed. Hereinafter, the operation in this case will be described. In the PRE mode, when a player presses a key on the keyboard 1, the root note and chord type are determined based on the key press event, and are written to the root register ROOT and the chord type register TYPE. Thereafter, when the ABC processing routine is executed via the interruption processing routine, the process first proceeds to step S2201, and the contents of the beat count register BEAT are updated according to the currently set style. Next, step S22
In step 02, the event data of the beat specified by the beat count register BEAT is read from the area corresponding to the currently set rhythm style in the automatic performance pattern memory area in the ROM 4. Next, proceeding to step S2203, the pitch information of the event data read out in step S2202 is stored in the root register ROOT.
Then, a note event of each musical tone constituting the chord is created by making a change based on the contents of the chord type register TYPE. Next, the process proceeds to step S2204, where the mode flag P
It is determined whether or not the content of the RE is “1”. In the case of the PRE mode, the result of this determination is "YES", and step S2
Proceed to 205. Then, each note event created in step S2203 is written to the MIDI buffer. Here, each note event has a channel number “10”
１６16 ”are written to the MIDI buffer as MIDI events. Next, the process advances to step S2206 to determine whether or not the content of the mode flag POST is "1". In the case of the PRE mode, this determination result is “NO”.
, And the process proceeds to step S2208. The value determined according to the contents of the tempo register TEMPO is set to ABC.
Write to the count register ABCCNT, and return to the interrupt processing routine. The note event for generating a chord written in the MIDI buffer in this manner is taken out of the MIDI buffer when the MIDI processing routine is executed, passed to the note event processing routine, and corresponds to each tone constituting the chord. The parameters are sent to the tone synthesis circuit 9, and a chord is generated. Thereafter, each time the ABC processing routine is executed, the same processing as described above is performed, and the automatic accompaniment is performed. If the OFF mode has been set as the operation mode, step S in the ABC processing routine is performed.
Neither of the processes 2205 and S2207 is executed. Therefore, no accompaniment 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 to perform 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 that 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 a sequencer channel switch processing routine shown in FIG. 14 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
Qi of the LED lamp LQ _N corresponding to the MIDI channel N of the (i = 1 to 16) and a lighting state, 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 player presses the sequencer channel switch BMi corresponding to the MIDI channel. Here, when MIDI channel i is set as a reproduction channel, 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 player 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. 15 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 process, the first duration data is read from each track of the performance data memory area in the RAM 5 and written to the duration register DT (i) corresponding to each MIDI channel i. 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. Note that when the start switch 42 is pressed,
If T = “1”, that is, if the start switch 42 is pressed during the automatic performance, when the process proceeds to step S1702 of the start switch processing routine, the determination result is “NO”, and S170
Without executing steps 3 and S1704, the process returns to the main routine via the panel processing routine.

When the start switch 42 is pressed, ST
When ART = “1”, the determination result of step S2105 becomes “Y” when the interrupt processing routine is executed thereafter.
ES ”, and in step S2106, a reproduction processing routine whose flow is shown in FIG. 21 is executed. First, the process proceeds to step S2301, where "1" is initialized in the variable register i. Next, the process proceeds to step S2302, where it is determined whether the content of the duration register DT (i) is "0". If the result of this determination is “No”, step S230
Proceeding to 6, the content of the duration register DT (i) is decremented by "1". Next, step S230
Proceeding to 7, the variable register i is incremented. Next, the process proceeds to step S2308, where it is determined whether or not i> 16. If the determination result is “No”, step S230 is performed.
Return to 2. On the other hand, if the determination result of step S2302 is “Y
In the case of "es", that is, when the content of the duration register DT (i) corresponding to the MIDI channel i becomes "0", the process proceeds to step S2303, and the track of the performance data memory area in the RAM 5 corresponding to the MIDI channel i , New event data and duration data are read out, and the duration data is written to the duration register DT (i). Next, the flow advances to step S2304 to determine whether or not the content of the reproduction flag PSW (i) is "1", that is, whether or not the MIDI channel i is a reproduction channel. The result of this determination is "Ye
In the case of "s", the flow advances to step S2305 to write the event data read from the performance data memory area to the MIDI buffer as a MIDI event corresponding to the MIDI channel i, and the flow advances to step S2306. on the other hand,
If the decision result in the step S2304 is "No", the step S23 is executed without executing the step S2305.
Proceed to 06. And the duration register DT
The contents of (i) are decremented (step S230)
6) Then, the variable register i is decremented (step S2307). If i> 16 is not satisfied, step S23 is performed.
Return to 02.

When the processing of steps S2302 to S2307 is performed for the MIDI channels "1" to "16", the result of the determination in step S2308 is "Yes", and the flow advances to step S2309. Then, for the MIDI channels "1" to "16", it is determined whether or not the reproduction of the MIDI event has been completed. 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 interrupt processing routine ends, the processing interrupted by the interrupt processing is restarted. 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 event data is read from the performance data memory area in the RAM 5, the judgment result in the step S2309 becomes "YES" when the reproduction processing routine is executed. As a result, the process proceeds to step S2310, where “0” is written to the start flag START, and
Return 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. 18 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 note-off information NOFF is generated for the currently sounding channels, that is, for all sounding channels i whose contents of the channel status registers ST (i) corresponding to the respective sounding channels are "1". It is created and supplied to the tone synthesis circuit 9. 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.

Generation of Accompaniment Sound The operation mode relating to automatic accompaniment is a POST mode,
When the channel number "9" is set as the reproduction channel, the accompaniment sound is generated based on the MIDI event corresponding to the channel number "9" reproduced from the performance data memory area. Hereinafter, the operation in this case will be described. As described above, note events reproduced from the performance data memory area by executing the reproduction processing routine are temporarily stored in the MIDI buffer, and then stored in the MIDI buffer.
It is taken out by the IDI processing routine, set in the event register EV, and delivered to the note event processing routine. Then, when the note event processing routine is executed in the POST mode, if the channel number of the note event in the event register EV is “9”, step S1523 is executed. As a result,
The chord is determined by the note code of the note event in the event register EV, and data indicating the root and chord type of the chord are written in the root register ROOT and the chord type register TYPE, respectively. After that, when the ABC processing routine is executed via the interrupt processing routine, in step S2203, the pitch information of the event read from the automatic performance pattern memory area is stored in the contents of the root register ROOT and the chord type register TYPE. Is changed based on the Then, the judgment result of step S2204 is "NO", the judgment result of step S2206 is "YES", and step S2207 is executed. In step S2202, the pitch information is read from the automatic performance pattern memory area. An event for generating the changed accompaniment sound is written to the event register EV,
A note event processing routine is executed. As a result,
An accompaniment sound is generated.

(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. 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 processing for setting the recording channel will be described below.

Setting of Recording Channel When 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.
In 803, a record switch processing routine whose flow is shown in FIG. 16 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 the recording channel, 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, the CPU 3 executes a start switch processing routine when an ON event of the start switch 42 is detected via the operation panel interface 8. In this case, RECSW =
Since it is “1”, the result of the determination in step S1701 is “Yes”, and the flow proceeds to step S1705. Then, it is determined whether or not the content of the record flag REC is “0”. 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. The record switch 4
If REC = “1” at the time when “1” is pressed, that is, the start switch 42 during the recording operation
When the record switch 41 is depressed, when the process proceeds to step S1705 of the start switch process routine, the determination result is “NO” and the process proceeds to step S1.
Without executing steps 706 and S1707, the process returns to the main routine via the panel processing routine.

Since 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. When a 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 an 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 corresponding tone synthesis circuit 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. 17 is executed. First, the process proceeds to step S1901 to determine 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 or not the MIDI event taken out of 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. And M in RAM5
In the buffer track corresponding to the IDI channel MCH, the elapsed time from the previous writing of the MIDI event to 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. 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, the reproduction process routine is executed in step S2312, as in the case of the reproduction mode described above, 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, the process proceeds to step S2006, where note-off information and an end code are written into buffer tracks corresponding to all recording channels. Next, the process proceeds to step S2007, where 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.

Generation and Recording of Accompaniment Sound An operation when the operation mode relating to the automatic accompaniment is the PRE mode will be described. In this case, when a key of the keyboard 1 is depressed by the player, a key processing routine is executed to determine a root note and a chord type based on the key depressing event, and a root register ROOT and a chord type are determined. The data is written to the register TYPE (step S70).
5). Then, similarly to the case of the automatic accompaniment in the case of the "instrument mode", the ABC is transmitted via the interrupt processing routine.
By executing the processing routine, the event data corresponding to the content of the beat register BEAT at that time is read from the automatic performance data memory area (step S2202), and the read event data, the root register ROOT and the code A note event for generating a chord is created based on the contents of the type register TYPE (step S2203), and the note event is written to the MIDI buffer as a MIDI event corresponding to any of channel numbers "10" to "16". Is performed (step S2204). In this way MIDI
The note event for generating a chord written in the buffer is extracted from the MIDI buffer when the MIDI processing routine is executed, passed to the note event processing routine, and the parameters corresponding to the respective musical tones constituting the chord are converted to the tone synthesizing circuit. 9 and the chord is pronounced. If the channel number of the MIDI event for generating a chord is set as the recording channel, the M
The IDI event is written to the performance data memory area in the RAM 5 by executing the write processing routine. Thereafter, every time the ABC processing routine is executed, the same processing as described above is performed, and the automatic accompaniment is performed and the performance data for the automatic accompaniment is recorded in the performance data memory area in the RAM 5. When a new key is pressed, the contents of the root register ROOT and the chord type register TYPE are updated based on the key pressing event, and the same processing as described above is performed, and accompaniment with a new chord is performed. At the same time, performance data corresponding to the accompaniment is recorded.

(4) Edit Mode When an operation element (not shown) for changing performance data on the operation panel 7 is operated and an edit point event designating event data to be changed is input, in step S406 of the main routine, When the sequence data edit routine is executed, step S1101 is executed.
Is "Yes" and the process proceeds to step S1102. Then, the track and address of the event data storage area to be changed in the performance data memory area are designated based on the input edit point event. The process advances to step S1103 to determine whether an event to be replaced with an event corresponding to the track and address specified in step S1102 has been input. If the result of this determination is "No", the process returns to the main routine. When an event to be replaced is input to the operation panel 7 by an operation, step S11
03 is “Yes”, and step S110 is performed.
Proceed to 4. Then, the event input by the operation of the operation panel is written in the storage area specified in step S1102 in the performance data memory area, and the process returns to the main routine. In this way, the performance data in the performance data memory area in the RAM 5 is rewritten.
By performing the operations described above, the player can update not only the performance data for automatic performance but also the performance data for automatic accompaniment to desired data. Note that the above
From the description of the present embodiment, the PRE mode and the POST mode are described.
The following is a summary of the actions in each
Swell. A chord is determined based on a key pressed by the PRE mode keyboard 1, and
A note event of an automatic performance pattern is created
Is written to the MIDI buffer (at this time, the accompaniment sound
MIDI channels are 10-16). And MIDI bar
The buffer data is sent to the tone synthesis circuit 9 and an accompaniment sound is generated.
Be sounded. Also, in the sequencer, the
One of the locks 10 to 16 (or all of them)
Is written to the MIDI buffer when the
Note events are recorded on tracks that are in recording mode.
Is written to. That is, in the PRE mode,
Automatic accompaniment tones based on chords specified by keyboard operation
Is written to the sequencer, thereby playing back the sequencer
In the mode, an automatic accompaniment sound is generated. The key depression by the POST mode keyboard 1 is directly performed as MIDI 9 channel.
Written to the MIDI buffer. And the sequencer
, The track 9 of the RAM 5 is in the recording mode
When the key is written to the MIDI buffer
A note event is written to track 9. Also,
When the sequencer is in playback mode,
Chords are determined based on channel note events,
A note event with an automatic performance pattern is created according to the chord.
And written to the MIDI buffer. And M
The data in the IDI buffer is sent to the tone synthesis circuit 9 and
A performance tone is pronounced. That is, in the POST mode
Is based on note events played from the sequencer
The chord is determined, and automatic accompaniment is performed according to the chord.
You. Thus, when the sequencer is in playback mode,
A moving accompaniment sound is generated. Also, PRE mode and POST
The differences between the modes are as follows. In the PRE mode, the generated accompaniment sound itself is
Recording, so you can edit the accompaniment sound later
However, it consumes a large amount of memory capacity. In the POST mode, a key press event for specifying a chord is performed.
Memory is recorded in the sequencer,
It requires less space, but does not allow for detailed editing of accompaniment sounds.
I can't.

[0051]

As described above, according to the present invention, performance data generating means for generating performance data , tone generating means for generating a musical tone in accordance with the performance data, and storage means for storing the performance data, The performance data is stored in the memory
A writing means for writing the stage, a reading means for reading the performance data from said storage means, to form a performance data for the accompaniment
Accompaniment data storage means for storing an accompaniment pattern for
The performance data generated by the performance data
Performance data read from the storage means by the output means
A chord based on the accompaniment data storage means
The accompaniment pattern is read out and based on the specified chord.
Accompaniment data that converts the pitch and forms and outputs performance data
Consists of a chromatography data forming means, wherein the mode of transfer of performance data between each unit, (a) the performance data generated by the performance data generating means is supplied to the accompaniment data forming means, the accompaniment data forming means the manual performance data to be output by the
Writing into the storage means by
Read out the playing data by the reading means and
A first aspect supplied to generating means, written to the storage means by the performance data is the writing unit generated by (b) the performance data generating means
And the performance read by the reading means.
Data is supplied to the accompaniment data forming means, performance data output from the accompaniment data forming means the tone onset
And both of the second aspects supplied to the raw means
Therefore, in the first embodiment, the form is
The accompaniment performance data itself is stored in the storage means.
In the second embodiment, performance data for specifying a chord is
Only the information is stored in the storage means. Therefore, in the first mode,
It will be possible to edit the accompaniment sound later.
It requires a lot of storage capacity, and in the second mode,
It requires less storage space, but does not allow for detailed editing of accompaniment sounds.
I can't. Thus, according to the present invention, such a first
And the second aspect can be properly used according to the purpose.
The effect that it can be obtained is obtained.

[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 illustrating each routine executed in the embodiment and a relationship between them.

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.

[Explanation of symbols]

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

Claims (1)

(57) [Claims] 1. A performance data generator for generating performance data.
According to the performance data, A tone generating means for generating a tone,  Storage means for storing performance data;Writing means for writing performance data to the storage means;  Performance dataSaidRead from storage meansReading means; Record accompaniment patterns to form performance data for accompaniment.
Accompaniment data storage means to remember The performance data generated by the performance data
Performance data read from the storage means by the output means
A chord based on the accompaniment data storage means
The accompaniment pattern is read out and based on the specified chord.
Accompaniment data that converts the pitch and forms and outputs performance data
Data forming means, Performance data between the above means
Data transfer modeAs(A) a performance generated by the performance data generating means;
The data is the accompaniment dataFormationSupplied to the means, said accompaniment
dataFormationBy meansoutputPerformance dataSaid book
By meansIn the storage meansWritten, written
Read out the playing data by the reading means and
A first mode for supplying to the generating means; (B) by the performance data generating meansOutbreakPerformed
The data isWriting to the storage means by the writing means
And the performance read by the reading means.
The data isThe accompaniment dataFormationSupplied to the means, said accompaniment
dataFormationmeansOutput fromPerformance dataMelody
With both of the second aspects supplied to the raw meansSpecially
Automatic playing device.