JPH06259075A - Electronic musical instrument - Google Patents

Abstract

PURPOSE:To prevent a reproduced musical sound from becoming discordant with a chord being sounded when musical performance information stored in a storage device in advance is read out and reproduced at the time of a musical performance. CONSTITUTION:Respective keys of a keyboard 1 are operated and then the automatic musical performance including pitch information is stored in a pad memory 9 in advance. When a player operates a pad 12 at the time of a musical performance, the automatic musical performance data stored in the pad memory 9 are read out and the pitch information included in the read automatic musical performance data is converted according to the chord of an accompaniment sound at the time of the read. A sound source circuit 7 generates a musical sound signal on the basis of the automatic musical performance data including the converted pitch information.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument having an automatic performance function.

[0002]

2. Description of the Related Art Conventionally, there is known an electronic musical instrument which has a memory for storing performance data and which reads out the performance data from the memory and produces a sound when a player gives an instruction. In such an electronic musical instrument, performance data of a phrase frequently used by a performer is stored in a memory in advance, and a desired phrase can be sounded by operating a pad or the like during performance.

[0003]

By the way, in the above-mentioned conventional electronic musical instrument, when a player gives a reproduction instruction, the performance data stored in the memory is read out, and a musical tone is generated based on the read performance data. . for that reason,
There is a problem that the accompaniment sound that is sounded at the time of reproduction may become a dissonance sound.

The present invention has been made under such a background, and when the performance data stored in the memory in advance is read and reproduced at the time of performance, the musical tone to be reproduced is in harmony with the generated chord. It is an object of the present invention to provide an electronic musical instrument that can be controlled so as not to become.

[0005]

An electronic musical instrument according to the present invention comprises performance information designating means for designating performance information including pitch information, and storage means for storing performance information designated by the performance information designating means. A pronunciation instructing means for instructing the pronunciation of a musical tone based on the performance information stored in the storage means, a chord designating means for designating a chord constituting an accompaniment sound, and a sounding instruction by the sounding instructing means, which is stored in the storage means. Control means for reading out the performance information read out and converting the pitch information contained in the read performance information according to the chord designated by the chord designating means, and the performance information including the pitch information converted by the control means. And a tone generating means for generating a tone signal based on the above.

[0006]

According to the above construction, performance information including pitch information is designated in advance by the performance information designating means and stored in the storage means. When the pronunciation is instructed by the pronunciation instructing means, the control means reads the performance information stored in the storage means, and the pitch information included in the read performance information is a chord specified by the chord designating means. Is converted according to.
A musical tone signal is generated by the musical tone generating means based on the performance information including the converted pitch information.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an electronic musical instrument according to an embodiment of the present invention. In this figure, reference numeral 1 denotes a keyboard, which has a plurality of keys. Reference numeral 2 denotes a keyboard circuit, which detects a key pressing state of each key on the keyboard 1, and indicates a key code KEY indicating a key pressing, a key-on signal KON indicating a key pressing state, and a key released. The key-off signal KOFF is output.

Reference numeral 3 is a working memory composed of a RAM, in which each register, variable and the like are stored. 4 is ROM
And a control program, rhythm pattern data and the like are stored. 5 is CP
U, the detection results of the keyboard circuit 2, the switch detection circuit 11, and the pad detection circuit 13 are fetched, the data stored in the working memory 3 and the program memory 4 are read, and the tone generator circuit 7 and other parts are controlled. Reference numeral 6 is a timer, which is C at predetermined time intervals, for example, every 96 minutes.
A timer interrupt is issued to PU5.

Next, the tone generator circuit 7 is supplied with a key-on signal KON detected by the keyboard circuit 2, a key code KEY, a key code KC read from automatic performance data, which will be described later, etc., and forms a tone signal based on them. To do. Reference numeral 8 denotes a sound system, which converts a musical tone signal output from the tone generator circuit 7 into an analog signal and outputs it as a musical tone from a speaker.

Reference numeral 9 denotes a pad memory for storing automatic performance data, which is four pad memories 9-n (n = 0 to 3).
The automatic performance data is read by operating the pad 12 described later. Sound generation timing data, key-on data / key-off data, pitch data, note length data, and the like are recorded in this automatic performance data, and end data is added at the end. Reference numeral 10 denotes a panel switch operated by the performer, such as a REC switch operated when the recording stand-by state of the automatic performance data is set, and a play / stop switch operated at the start or end of the recording of the automatic performance data. , And a plurality of switches such as an accompaniment start / stop switch operated at the start or end of the accompaniment sound. The switch detection circuit 1 is an O switch for various switches of the panel switch 10.
N / OFF is detected and those ON / OFF states are output.

Reference numeral 12 is a pad, and four pads 12-
n (n = 0 to 3). Each pad 12-0, 12-
1, 12-2 and 12-3 are pad memories 9-n, respectively.
(N = 0 to 3), and the corresponding pad memories 9-0, 9-1, 9-by being operated.
The automatic performance data are read out from 2, 9-3. Also, the pad 12-0 and the pad 12-1
Is operated, the pad memories 9-0 and 9-1
When the automatic performance data recorded in the above is directly reproduced and the pads 12-2 and 12-3 are operated, the pitch data of the automatic performance data read from the pad memories 9-2 and 9-3 is It is converted according to the chord detected by the key depression operation. When the pad 12-n is operated at the same time when the REC switch is operated, the pad memory 9-n to which the automatic performance data is written is designated, and the recording standby state is set. In such a recording standby state, recording is started when any one of the keys of the keyboard 1 is pressed or the play / stop switch is pressed. The pad detection circuit 13 detects an ON event of the pad 12-n.

Now, each variable and register used to control the operation of the above-described electronic musical instrument will be described. Each of these variables is set in a predetermined storage area of the working memory 3. Run flag RUN: When this flag is set, automatic accompaniment is started, and when reset, automatic performance is stopped. Pad mode PMOD (n) (n = 0 to 3): “0” when data is not read from the pad memory 9-n and data is not written to the pad memory 9-n.
(Stopped state), "1" (playback state) when reading the automatic performance data stored in the pad memory 9-n, and "2" (waiting for writing the automatic performance data to the pad memory 9-n). When the automatic performance data is written to the pad memory 9-n) (recording standby state), "3" (recording state) is set. Route register RT: The root note of the detected chord is set. Type register TP: The type of chord to be detected is set. Pad number PN: number n of operated pad 12-n
(N = 0 to 3) is set. Timing counter CNTn (n = 0 to 3): Pad 1
2-n (n = 0 to 3), that is, it is set for each pad memory 9-n, and is incremented each time a timer interrupt is performed. Pointer PTRn (n = 0 to 3): Pad memory 9-n
Addresses for writing and reading are set. Counter j: Used for counting the number n (n = 0 to 3) of the pad 12-n. Channel number CH: In the tone generator circuit 7, a channel number assigned to the sounding of the key-on data read from the automatic performance data is set. Key code data KCD (CH): Channel number CH
The key code of the key-on data assigned to the channel is set.

Next, the operation of the electronic musical instrument according to this embodiment will be described with reference to the flowcharts of FIGS.
When the power (not shown) of this electronic musical instrument is turned on, the CP
U5 starts execution of the main routine whose flow is shown in FIG. First, in the main routine, step SA1
Then, the initialization process is performed. By this initialization processing, the registers and each variable in the working memory 3 are initialized.

§1. Normal Key Performance First, the processing in the normal key performance will be described. First, when the performer operates one of the keys of the keyboard 1, the keyboard circuit 2 detects an ON / OFF event of the key,
In step SA2, the CPU 5 executes a key event process described later. Next, in step SA3, it is determined whether or not the ON event of any of the pads 12-n is detected by the pad detection circuit 13, and when none of the pads 12-n is operated, the process proceeds to step SA4. . Then, in step SA4, it is determined whether the switch detection circuit 11 has detected an ON event of the accompaniment start / stop switch. If the accompaniment start / stop switch is operated, the result of this determination is "YES", and the routine proceeds to step SA5,
The run flag RUN is inverted. If the automatic accompaniment has not been performed yet, the run flag RUN is inverted from "0" to "1" in step SA5. If the automatic accompaniment is performed, the run flag RUN is changed from "1" to "1". Invert to "0". Next, in step SA6, it is determined whether or not the run flag RUN is "1". If the result of this determination is "YES", then the processing advances to step SA7, at which initial settings for starting automatic accompaniment are made.
In the case of "NO", the flow proceeds to step SA8 to stop the automatic accompaniment. On the other hand, in step SA4,
When the accompaniment start / stop switch ON event is not detected, the result of this determination is "NO", and the routine proceeds to step SA9.

Next, in step SA9, the CPU 5
Judges whether or not the ON event of the play / stop switch is detected by the switch detection circuit 11, and if the play / stop switch is not operated, proceeds to step SA10 to perform other processing such as switch processing. . Then, the process returns to step SA2, and thereafter, the CPU 5
Repeatedly executes steps SA2 to SA10 described above.

<Key Event Processing> If the performer operates a key during execution of the above-mentioned main routine, step S
The key event process in A2 is executed. Figure 3
It is a flow chart explaining the processing flow of the key event processing routine performed in Step SA2.
First, in step SB1, pad mode PMOD
It is determined whether or not (n) (n = 0 to 3) is set to "2" or "3". Pad 12
If none of -n is operated, the pad mode PMOD (n) is all "0", and therefore step SB
The result of the determination in 1 is "NO", and step SB
Go to 2.

Next, at step SB2, it is determined whether or not the key code KEY detected by the keyboard circuit 2 is a right key range key code. This judgment result is "YE
If "S", that is, if a key in the melody key range is pressed or released, the process proceeds to step SB3. If the key event is key depression, the key-on signal KO detected by the keyboard circuit 2 in step SB3.
Data such as tone color, volume, and effect set by N and key code KEY, and an operator (not shown) are output to the tone generator circuit 7. As a result, the tone generator circuit 7 forms a musical tone signal based on the above-mentioned data, and the sound system 8 converts the musical tone signal into an analog signal and outputs it from a speaker. On the other hand, in the case of releasing the key, the CPU 5 outputs the key-off signal KOFF and the key code KEY to the tone generator circuit 7, whereby the tone signal generation by the tone generator circuit 7 ends.

If the key code KEY detected in the keyboard circuit 2 is a key code in the left key range, that is, if a key in the accompaniment key range is pressed, step SB.
Go to 4. Here, when a "finger code" is designated as a chord detection method by an operator (not shown), in step SB4, the key code KEY of each key constituting the chord is detected and, at the same time, each of the keys of those keys is detected. The root note and chord type of the chord are detected from the combination. Also, when "single finger chord" is specified as the chord detection method, the highest note of the pressed keys is detected as the root note, and the chord specified by the operation of another key or another operator. Detect the type. And
The root note of the chord detected by any of the above methods is set in the root register RT, and the chord type is set in the type register T.
Set to P.

Then, the above step SB3 or SB
When the process of 4 is completed, the key event process is completed and the process returns to the main routine.

<Timer Interrupt Processing> Further, the CPU 5
A timer interrupt is performed by the timer 6 in parallel with the execution of the main routine described above, so that the timer interrupt process is executed every 96 minutes. FIG. 4 shows a processing flow of this timer interrupt processing. First, in step SC1, it is determined whether or not the value of the run flag RUN is "1". When the automatic accompaniment instruction is given, the run flag RUN is "1", and the routine proceeds to step SC2. next,
In step SC2, based on the type register TP set in the key event process, and the style and tempo set by an operator (not shown),
Pattern data (pitch information and sounding timing data) of chord sounds and bass sounds are read from a chord pattern memory and a bass pattern memory (not shown).
Then, the pitch information is corrected by the type register TP in accordance with the read sounding timing data, and the root register RT is added to generate a key code of a musical tone constituting a chord to be sounded. This key code is supplied to the tone generator circuit 7 and becomes a tone signal and is sounded from the speaker of the sound system 8. At the same time, the rhythm pattern data is read from the program memory 4 on the basis of the style and tempo and output to the tone generator circuit 7.
As a result, the sound source circuit 7 generates a rhythm sound signal of the designated rhythm sound, and the speaker of the sound system 8 produces a rhythm sound based on the signal.

On the other hand, since no automatic accompaniment instruction is given,
When the process of step SC2 is completed, or when the result of the determination in step SC1 is "NO", the process proceeds to step SC3. Then, step SC3
At step SC, the counter j is set to "0" and step SC
Go to 4. Next, in step SC4, it is determined whether or not the value of the pad mode PMOD (j) is "1". If the pad 12-j is not operated, the value of the pad mode PMOD (j) is "0", so the determination result in step SC4 is "NO", and the routine proceeds to step SC6.

Next, in step SC6, it is determined whether or not the value of the pad mode PMOD (j) is "3". In this case, when none of the pads 12-j is operated and the value of the pad mode PMOD (j) is "0", the result of this determination is "NO", and step SC8
Proceed to. Then, in step SC8, the counter j
Is incremented, and it is determined in step SC9 whether or not the value of the counter j is "4". Here, when the value of the counter j is not "4", the determination result is "NO", and the process returns to step SC4. And
The processes of steps SC4 to SC9 are repeated until the value of the counter j reaches “4”, that is, until the processes for all the pad modes PMOD (j) are completed. The value of the counter j becomes "4", and step SC
When the determination result in 9 is "YES", the interrupt process is terminated and the process returns to the predetermined process.

§2. Recording of automatic performance data Next, a recording process of automatic performance data will be described. First, the performer selects the REC switch and the pad 12-n.
Operate either. As a result, the pad detection circuit 13 detects the ON event of the pad 12-n, and the CPU 5 executes the following pad processing in step SA3.

<Setting of recording standby state by pad processing>
FIG. 5 is a flowchart illustrating a processing flow of a pad processing routine executed in step SA3 of the main routine. First, in step SD1,
The number n of the operated pad 12-n is set to the pad number PN. Next, in step SD2, the pad number P
Timing counter CNTn (n = PN) corresponding to N
To reset. Further, in step SD2, the pointer PTRn corresponding to the pad number PN is set to the head address of the pad memory 9-n. Next, step S
The process proceeds to D3, and it is determined whether or not the REC switch is in the ON state. When the REC switch is operated, the result of the determination in step SD3 is "YES", and the process proceeds to step SD4. Then, in step SD4, the pad mode PMOD (PN) corresponding to the pad number PN
Is set to "2". By this processing, the pad memory 9-n corresponding to the operated pad 12-n enters the write standby state. Then, the CPU 5 ends the pad process and returns to the main routine.

Next, when the performer presses any one of the keys of the keyboard 1 or operates the play / stop switch in the recording standby state, the automatic performance data for the pads in the recording standby state. Will start recording.

<Recording start by key depression operation> First, keyboard 1
A case where any one of the keys is pressed will be described. When the keyboard circuit 2 detects the ON event of the depressed key, the CPU 5 executes the key event processing routine shown in FIG. First, step SB1
In the pad mode PMOD (n) (n = 0 to 3)
It is determined whether or not is set to "2" or "3". When "2" is set in the pad mode PMOD (n) in the above-mentioned pad processing, that is, in the recording standby state, the determination result in step SB1 is "YES", and the process proceeds to step SB5.
Then, in step SB5, sound generation or mute processing is performed on the key that has been pressed or released. Next, proceeding to step SB6, the number n of the pad 12-n operated together with the REC switch is set to the pad number PN.

After that, the process proceeds to step SB7 and the pointer PT of the pad memory 12-n corresponding to the pad number PN.
At the address indicated by Rn, key-on data / key-off data indicating a key operation event (ON event or OFF event) and timing counter CNTn (n = P
N) sounding timing data and key code K
Remember EY. Next, in Step SB8, the pointer PTRn is advanced. Then, the process proceeds to step SB9, and the pad mode PMOD corresponding to the pad number PN
(PN) is set to "3" and the recording state is set. As described above, when the pad memory 9-n is in the recording standby state,
As soon as one of the keys is pressed, the recording state starts. Then, the CPU 5 ends the key event process and returns to the main routine. After that, the operated pad 12-n
Each time a key operation event occurs while the pad mode PMOD (n) corresponding to is "3", that is, in the recording state, step S in the key event process.
The determination result in B1 is "YES", and the above-described steps SB5 to SB9 are performed. As a result, recording is performed by writing the automatic performance data of the pressed and released keys in the pad memory 9-n.

<Recording Start by Operation of Play / Stop Switch> Next, a case will be described where recording is started by operating the play / stop switch in response to the recording start processing by the key depression operation described above. . Figure 6
FIG. 9 is a flowchart illustrating a processing flow of a play / stop processing routine executed in step SA9 of the main routine. First, in step SE1, one of the pad modes PMOD (n) is set to "1".
Alternatively, it is determined whether or not "3" is set. When "2" is set to the pad mode PMOD (n) in the above pad processing, the result of the determination in step SE1 is "NO", and the flow proceeds to step SE8. Then, in step SE8, "0" is set to the counter j. Next, in step SE9, it is determined whether or not the value of the pad mode PMOD (j) is “2”, that is,
It is determined whether or not it is in the recording standby state. If the result of this determination is "YES", the flow proceeds to step SE10, the pad mode PMOD (j) is set to "3", and step SE
Proceed to 11.

On the other hand, when the value of the pad mode PMOD (j) is not "2", that is, when it is "0" (in the stopped state), the determination result in step SE9 is "NO", and the pad mode is set. Without making any changes, the process proceeds to step SE11. Next, in step SE11, the counter j is incremented, the process proceeds to step SE12, and it is determined whether or not the value of the counter j is “4”.
Here, when the value of the counter j has not reached "4", this determination result is "NO", and the process returns to step SE9. Then, the processes of steps SE9 to SE12 are repeated until the value of the counter j becomes "4", that is, until the processes for all pads are completed. As described above, when the play / stop switch is operated in the recording standby state, the recording starts. Then, the CPU 5 ends the play / stop processing and returns to the main routine. After that, every time a key operation event occurs, the key event process of step SA2 of the main routine is executed to write the automatic performance data of the depressed and released keys into the pad memory 9-n.

In the recording start state, the CPU 5
Every time the timer interrupt processing shown in FIG. 4 is executed, the timing counter CNTn corresponding to the pad memory 9-n in the write state is incremented. That is, in step SC6, the pad mode PMO
It is determined whether or not the value of D (j) is "3". If the pad memory 9-j is in the writing state, the result of this determination is "YES", and the routine proceeds to step SC7. Then, in step SC7, the timing counter CN
Increment Tj.

<Stop Recording> When the performer operates the play / stop switch during the above-described recording process, the CPU
5 is play / in step SA9 of the main routine
Execute stop processing.

Step SE of the flowchart shown in FIG.
At 1, it is determined whether "1" or "3" is set in any of the pad modes PMOD (n). In this case, since the recording state (“3”), the determination result is “YES” and the process proceeds to step SE2. Then, in step SE2, the counter j is set to "0", and the process proceeds to step SE3. Next, step SE3
At, it is determined whether or not the value of the pad mode PMOD (j) is "3". When the automatic performance data is written in the pad memory 9-j, that is, in the recording state, the pad mode PMOD (j) is "3", and the result of the determination in step SE3 is "YES". Then, the process proceeds to step SE4. Then, in step SE4, the end data is written to the address pointed by the pointer PTRj of the pad memory 9-j.
Then, in step SE5, the pad mode PMO
Set "0" to D (j). As a result, the writing to the pad memory 9-n is completed and the recording is stopped.

Next, in step SE6, the counter j
Is incremented, the process proceeds to step SE7, and it is determined whether or not the value of the counter j is "4". Here, when the value of the counter j has not reached "4", the determination result is "NO", and the process returns to step SE3.

In this way, steps SE3 to SE7 are repeatedly executed until the result of the determination in step SE7 becomes "YES", that is, until the processing for all pad modes PMOD (j) is completed. Then, the determination result in step SE7 is "YES".
Then, the play / stop processing is terminated and the process returns to the main routine.

§3. Reproduction of Automatic Performance Data Next, the process of reproducing the automatic performance data will be described. First, at the time of performance, the performer operates one of the pads 12-n, that is, the pad 12-n corresponding to the pad memory 9-n in which desired automatic performance data is recorded.
As a result, the pad detection circuit 13 causes the pad 12
When the -n ON event is detected, the CPU 5 executes the pad process shown in FIG. 5 in step SA3 of the main routine.

<Setting of Playback State by Pad Processing> First, in step SD1, the operated pad 12-
The number n of n is set to the pad number PN, and step SD2
Then, the timing counter CNTn (n = PN) corresponding to the pad number PN is reset. In step SD2, the pointer P corresponding to the pad number PN
TRn is set to the head address of the pad memory 9-n, the process proceeds to step SD3, and it is determined whether or not the REC switch is in the ON state. In this case, the result of this determination is "NO", the flow proceeds to step SD5, and "1" is set in the pad mode PMOD (PN). This causes the pad memory 9-n corresponding to the operated pad 12-n.
Becomes the read state. Then, the CPU 5 ends the pad process and returns to the main routine.

Further, when the player presses and releases the key during the reproduction of the automatic performance data,
The CPU 5 executes the key event process of step SA2 of the main routine as described above. In this case,
The result of the determination in step SB1 of the key event process shown in is "NO", and the process proceeds to step SB2. Then, as in the case of the above-described normal key performance, when a key in the melody key range is pressed / released, the sound of
Muting processing is performed, and when a key in the accompaniment tone range is pressed, a chord is detected.

<Reproduction Processing of Automatic Performance Data by Timer Interrupt Processing> The automatic performance data of the pad memory 9-n which is in the read state as described above is reproduced by the timer interruption processing. The CPU 5 executes the pad mode PMOD at step SC4 of the timer interrupt process shown in FIG.
It is determined whether or not the value of (j) is "1". When the pad memory 9-j is in the read-out state of the automatic performance data, the result of this judgment is "YES", and step SC5
Then, the process proceeds to step and the pad reproducing process shown below is performed.

<Pad Reproduction Processing> FIG. 7 is executed in step SC5 of the timer interruption processing shown in FIG.
7 is a flowchart illustrating a processing flow of a pad reproduction processing routine. First, in step SF1, the automatic performance data stored in the pad memory 9-j indicated by the counter j is read. Next, in step SF2, it is determined whether the read data is end data. If the read data is end data, the result of this determination is "YES" and the processing returns to the interrupt processing routine. If the read data is not end data, the determination result in step SF2 is “N
O ”, and the process proceeds to step SF3. Then, in step SF3, it is judged from the read sound generation timing data and the timing counter CNTj whether or not it is the reproduction timing. If it is not the timing for reproducing the performance data, the result of this determination is "NO", and the process returns to the interrupt processing routine. If it is the reproduction timing, the determination result in step SF3 is "YES", and the process proceeds to step SF4.

Then, in step SF4, it is determined whether the read data is key-on data.
If the result of this determination is "YES", the flow proceeds to step SF5 and the key code of the key-on data is changed to the key code KC.
And key code KC '. Next, step S
The process proceeds to F6, and it is determined whether the counter j is "2" or more. That is, the pad memory 9-2 or 9-3
When the automatic performance data of No. is read, in other words, when the pad 12-2 or 12-3 is operated, the process proceeds to step SF7, and the key code KC is set to the route register RT and the route register RT detected in the key event process. Convert according to the type register TP. On the other hand, when the counter j is "0" or "1", that is, when the automatic performance data of the pad memory 9-0 or 9-1 is read, the determination result in step SF6 is "NO". , And proceeds to step SF8 without conversion processing.

Next, in step SF8, the key-on signal of the read data and the key code KC are
Output to the sound source circuit 7. As a result, a tone signal is formed in the tone generator circuit 7 based on the key code KC,
Sound is produced from the speaker of the sound system 8. next,
In step SF9, the channel number assigned by the tone generator circuit 7 is set to the channel number CH. Then, the process proceeds to step SF10 and step SF5.
The key code KC 'set in 1 is set in the key code data KCD (CH). Next, step SF1
4, the pointer PTRj of the pad memory 9-j is advanced. Then, the process returns to step SF1 and the pad memory 9
Read the data of -j again.

Here, if the read data is key-off data, the result of the determination in step SF4 is "N".
"O" and the process proceeds to step SF11. Then, in step S11, the key code of the read data is set to the key code KC. Next, in step SF12, key code data KCD equal to key code KC.
(I) The number i (i indicates a channel number) is set to the channel number CH. Then, in step SF13, the key-off signal and the channel number CH are output to the tone generator circuit 7. As a result, the tone generator circuit 7 terminates the generation of the tone signal in the channel corresponding to the channel number CH. Then, the process proceeds to step SF14, the pointer PTRj of the pad memory 9-j is advanced, and the process proceeds to step SF1. And the pad memory 9-
The pad reproduction process described above is repeated until the end data is read from j and the determination result in step SF2 is “YES”. When the CPU 5 reads the end data from the pad memory 9-j, the pad reproducing process is ended and the process returns to the interrupt processing routine.

<Stopping Reproduction of Automatic Performance Data> When the performer operates the play / stop switch during the above-described reproduction processing, the CPU 5 executes the play / stop processing in step SA9 of the main routine.

Step SE of the flow chart shown in FIG.
At 1, it is determined whether "1" or "3" is set in any of the pad modes PMOD (n). In the reproducing state, that is, the pad memory 12-
If the automatic performance data has been read out from any of the n, the result of this judgment is "YES", and step SE
Go to 2. Then, in step SE2, the counter j is set to "0", and the process proceeds to step SE3. Next, in step SE3, it is determined whether or not the value of the pad mode PMOD (j) is "3". If the result of this determination is "NO", the flow proceeds to step SE5 and "0" is set in the pad mode PMOD (j). Then, in step SE6, the counter j is incremented, and in step SE7, it is determined whether or not the value of the counter j is "4". Here, when the value of the counter j has not reached "4", this determination result is "NO", the process returns to step SE3, and the processes of steps SE3 to SE7 are performed until the value of the counter j becomes "4". repeat. As a result, the reading of the automatic performance data from the pad memory 9-n is completed, and the reproduction is stopped.

Next, the operation of the musical instrument of the present invention will be described. <Automatic performance data recording operation> After the power is turned on, the performer
When either the REC switch or the pad 12-n is operated, the recording standby state is set. In this state, when the performer operates any of the keys on the keyboard 1, the recording starts. Alternatively, even if the play / stop switch is operated in the recording standby state, the recording starts. After that, the event data of the operated key (ON event or OFF event), sounding timing data,
And the key code KEY indicates the operated pad 12-n.
Is written in the pad memory 9-n corresponding to. Then, when the performer operates the play / stop switch during the recording process, the recording ends.

<Playback operation of automatic performance data>
If you operate any of the pads 12-n while playing a key,
Pad memory 9-n corresponding to the operated pad 12-n
The automatic performance data is read from. Here, when the performer operates the pad 12-0 or 12-1, the automatic performance data recorded in the pad memory 9-0 or 9-1 is reproduced as it is. On the other hand, the performer uses pad 1
When 2-2 or 12-3 is operated, the automatic performance data read from the pad memory 9-2 or 9-3 is converted by the chord sounded by the performer at that time by the key performance.

For example, while the performer is playing the "C" chord on the keyboard 1, the pad 12-2 or 12
It is assumed that -3 is operated. At this time, in the automatic performance data read from the pad memory 9-n, there are musical tones that are dissonant with the musical tones (C (do), E (mi), and G (so)) that form the chord of "C". If it is not included, the read automatic performance data is reproduced as it is. On the other hand, when the read automatic performance data includes a musical tone that is dissonant with the musical tone that constitutes the “C” chord, the pitch of the dissonant musical tone is converted. For example, if the automatic performance data contains a musical tone of A (La), it is converted into the closest pitch G.

When the performer operates the play / stop switch during the reproduction process as described above, the reproduction ends.

[0049]

As described above, according to the present invention, when the performance information stored in the storage means in advance is read and reproduced at the time of performance, the pitch information included in the read performance information is generated. Since the conversion is performed according to the chord that is present, there is an effect that the reproduced musical tone can be controlled so as not to cause dissonance with the chord.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an electronic musical instrument according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of a CPU 5 in the same embodiment.

FIG. 3 is a flowchart showing an operation of the CPU 5 in the same embodiment.

FIG. 4 is a flowchart showing an operation of the CPU 5 in the same embodiment.

FIG. 5 is a flowchart showing an operation of the CPU 5 in the same embodiment.

FIG. 6 is a flowchart showing the operation of the CPU 5 in the same embodiment.

FIG. 7 is a flowchart showing the operation of the CPU 5 in the same embodiment.

[Explanation of symbols]

1 ... keyboard (performance information designating means, chord designating means), 5 ...
... CPU (control means), 6 ... Timer, 7 ... Sound source circuit (tone generation means), 9 ... Pad memory (storage means),
10 ... Panel switch, 12 ... Pad (pronunciation means).

Claims (1)

[Claims] 1. Performance information designating means for designating performance information including pitch information, storage means for storing performance information designated by said performance information designating means, and performance information stored in said storage means. A pronunciation instructing means for instructing the pronunciation of a musical sound, a chord designating means for designating chords constituting an accompaniment sound, a performance information stored in the storage means in response to a pronunciation instruction by the pronunciation instructing means, and the read performance information. Control means for converting the pitch information included in the chord information according to the chord designated by the chord designating means, and a tone generation means for generating a musical tone signal based on the performance information including the pitch information converted by the control means. An electronic musical instrument comprising: