JP3521443B2 - Automatic accompaniment device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a code for an automatic accompaniment device.
Related to performance recording function. [0002] Conventionally, even beginners can enjoy automatic accompaniment more.
Function is a code memory function. With this feature
Is compared by the player in the automatic accompaniment recording mode.
If a key in a predetermined bass key area is pressed,
The input chord is recorded according to the performance timing.
You. Then, in the automatic accompaniment playback mode, the recorded
The chord performance is played. The performer determines the content
You can enjoy the melody performance along with the music. [0003] However, the above-mentioned conventional technology
With the code memory function, when recording,
Code (non-code) where the code cannot be incorrectly
If entered as another chord, the performer
Immediately afterwards, you will probably enter the correct code again.
When the recorded code is played back, the wrong code
Code and the correct code are played consecutively
This is different from the chord accompaniment originally intended by the player
There is a problem that the result is obtained. [0004] For this reason, especially for beginners, it is quite easy
The recording operation cannot be performed, and the code memory function is fully enjoyed.
There is a problem that it is not possible. Of the present invention
Assignments can correct input errors during chord performance recording
It is to be. SUMMARY OF THE INVENTION [0005] The present invention provides a music player
The code designation operation is performed by the code data indicating the attribute of the code.
Data (for example, route and code type) and the code
Timing data (for example, the previous
Interval time, which is the time interval from when the
And record the code data from the recording means.
The timing data is read sequentially, and the read
Read the automatic accompaniment based on the chord sound corresponding to the
Automatically perform at the timing corresponding to the issued timing data.
A moving accompaniment device is assumed. [0006] A first aspect of the present invention based on this premise is:
It is as follows. First, the recording operation for the recording means
Sometimes, when an impossible code is specified,
Of non-code data
Non-recording timing data indicating the specified timing
It has code data recording means. Next, after the recording operation on the recording means (example
For example, when the recording operation is turned off), the recording means
Data detection method that detects non-coded data from
It has a step. Subsequently, after the recording operation on the recording means,
On the recording means, the non-code data
From the specified timing of the non-coded data
Code data specified next to the code data
Timing difference calculation to calculate the timing difference until the timing
It has outlet means. Then, the following code correcting means is provided.
You. In other words, this code correction means is a
After the recording operation, the timer calculated by the timing difference
When the difference in the imaging is smaller than a predetermined value, the recording means
In the above, the non-code data detected by the non-code data
At the specified timing of the code data,
Specified next to the non-coded data instead of
Code so that the specified code data is specified.
Is the code specified next to the non-coded data
At the data specification timing, the code data
Modify it so that it is not specified. Also, code modification means
Is the timing calculated by the timing difference calculation means
The difference Predetermined value If not smaller, on the recording means,
Non-code detected by non-code data detection means
At the specified timing of the data, the non-code data
Modify so that the data is not specified. When the user performs a recording operation of designating a code,
If you make a mistake in specifying the code,
Code, and right after that,
Code is often specified. Therefore, in the first embodiment of the present invention,
Non-codes are recorded by non-code data recording means.
Is recorded as data, and after the recording operation ends,
Code data detecting means, timing difference calculating means, and
The non-code data is recorded on the recording
Is detected, and the next specified
Timing difference up to the specified code data is less than the specified value
If the non-code data is specified next
By replacing the code data
Corrected to the correct code specification. An embodiment of the present invention will be described below with reference to the accompanying drawings.
A detailed description will be given. FIG. 1 is an external view of an embodiment of the present invention.
It is. In this embodiment, the present invention is applied to an electronic keyboard instrument.
It is a thing. In this embodiment, the memory for the code memory is
During recording operation (hereinafter referred to as code memory recording mode)
), A chord that cannot be performed by the player
Is called a non-code).
Recorded as data. And code memory record
At the end of the mode, the recorded content is searched from the beginning and
As a result, non-coded data is found, and
If code data is found within a certain timing
Is the timing of the non-code data
To the key, the key press mistake
It is characterized by being modified. For this purpose, in FIG.
In addition, various switches and switches
LED (light emitting diod)
In addition to e), whether or not to perform code memory recording operation
Memory recording mode on / off for specifying
LE for displaying switch 103 and its switch status
D104 and the above-described code modification operations related to the present invention
Mode on / off for specifying whether or not to perform
LE for displaying switch 105 and its switch status
D106. FIG. 2 is a block diagram showing an embodiment of the present invention.
FIG. CPU 201, ROM 202, RAM 20
3, the keyboard unit 101 and the switch unit 102
7 interconnected. The CPU 201 is stored in the ROM 202
RAM 203 based on the control program
It operates while using it as a querier,
Scan the switch unit 102 to capture their operation status
Sound to the sound source 204 according to their operation state
Perform control. Further, the CPU 201 executes the above code memo.
In the re-recording mode, the player presses a key on the keyboard 101.
The code entered by performing
Record in memory area and exit code memory recording mode
Sometimes, the present invention is applied to the recorded contents of the code memory area.
Perform the above-described code correcting operation. Furthermore, CP
U201 is a code memo in code memory playback mode.
The code data recorded in the rear area is played back sequentially,
Sound control for automatic chord accompaniment for sound source 204
Do. The sound source 204 has a sound generation system from the CPU 201.
For example, PCM (Pulse Code Modulation)
Method, phase modulation method, frequency modulation method, harmonic addition method, etc.
Digital tone waveform data based on the
Generate. Digital tone waveform generated by sound source 204
Data is converted to analog data by the D / A converter and amplifier 205.
It is converted to sound waveform data, amplified, and
Is emitted. Next, FIG. 3 shows the contents of the RAM 203 (FIG. 2).
FIG. 3 is a data configuration diagram of a memory module area. Code memory
In the recording mode, the code memory area contains 2 bytes.
The data set is stored. This dataset is shown in FIG.
Specify the chord accompaniment timing as indicated by A in
Time, route, and code type
, Or as shown in FIG. 3B,
Non-code indicating interval time and impossible code
Data (FE (h)) or C shown in FIG.
Interval time and interval time
Can no longer be expressed in terms of time and the interval time continues
Time continuous data (FF (h))
is there. The operation of the embodiment of the present invention having the above-described configuration will now be described.
The work will be described below in order. 4 to 11 show the CPU.
201 executes the control program stored in the ROM 202;
4 is an operation flowchart realized as an operation to be performed.
You. When the power is turned on, first, the initialization shown in FIG.
The operation flowchart of the call processing is executed.
5 and 6 keyboard processing, FIGS. 7 and 8 switch processing, and
Each operation flowchart of the accompaniment process of FIG. 9 and FIG.
It is executed repeatedly. FIG. 11 is a block diagram of the CPU 201.
4 to 11 at regular intervals from a timer (not shown)
Occurs for the control program corresponding to the flowchart
Interrupts executed based on interrupts
4 is an operation flowchart corresponding to a processing program.
You. In this interrupt processing, the interval time is updated.
The control operation for new is executed. First, in the initial processing shown in FIG.
In step S401, the code memory area of the RAM 203
Is cleared. Next, in step S402,
Set the initial tone (initial tone), etc.
You. Subsequently, in step S403, the rhythm pattern in the initial state is set.
A set of turns is performed. Then, step S404
Then, various other initial processes are performed. Next, the keyboard processing of FIGS. 5 and 6 will be described.
I do. This processing is performed as described above with reference to FIGS.
With the switch processing of FIG. 9 and the accompaniment processing of FIG.
It is executed repeatedly. In the following description,
On / off of accompaniment mode and chord memory recording mode
The on / off operation is performed automatically (not shown) in the RAM 203.
Accompaniment mode flag and chord memory recording mode flag
Determining whether it is on or off
Is determined. First, the steps in FIG. S501 And the keyboard
The matrix of 101 is scanned and the next step S
At 502, the key press data or
It is determined whether there is key release data. At step S502, a key press or key release occurs.
If the determination of YES is YES, in step S503, the push
The sound control data corresponding to the key or the key release is stored in the RAM 203.
In particular, this is a process for setting an area (not shown).
Signer processing is executed. Next, in step S504, the key is not pressed.
Then, it is determined whether or not the code is specified. Ingredient
Physically, for example, it is currently in auto accompaniment mode
Key and a key in the specified low-pitched key area
The code is specified by determining whether
It is determined whether it has been done. Switch the automatic accompaniment mode
Set by one of various switches (see FIG. 1) of the unit 102.
The detection of the setting state and the switching are performed by keyboard processing.
In the switch processing described later
Performed by the process of step S707 (FIG. 7).
You. A key is pressed and a code is specified.
In cases other than the case where it is determined that
If the determination is NO, the process proceeds to step S505.
The tone control set in the RAM 203 in step S503
Based on your data, the melody sound is generated (when the key is pressed).
Sound) or mute (in the case of key release)
Made against. Thereafter, after the processing of step S501,
The descending process is executed again. A key is pressed and a code is specified.
Is determined, the determination in step S504 is YE
S, and in step 506 of FIG.
In step S503, the key pressed in the RAM 203 is pressed.
From the key number data of the key,
A code type is calculated. This process is performed, for example, in the ROM 2
02 and the code data of the code table stored in
This is realized as an operation of sequentially comparing. In the next step S507, the calculated code
Whether the code type is an impossible code type (non-code)
Is determined. If the calculated code type is non-code
If the determination in step S507 is YES, step S508
And the value of the code variable indicating the root and code type is non-
Set to the value FE (h) (h indicates hexadecimal) indicating the code.
Is determined. After that, step S509 is executed. The calculated code type has a possible code.
If the determination in step S507 is NO, step S508 is
Step S509 is executed without being executed. Steps
In step S509, the code memory of the switch unit 102 is
The recording mode on / off switch 103 sets the code
It is determined whether the memory recording mode is turned on.
You. Code memory recording mode on / off switch 103
State detection and its switching are repeated with keyboard processing
Step S7 in a switch process to be executed which will be described later.
08 to S721 (FIG. 8). At present, the code memory recording mode is turned on.
If the determination in step S509 is YES,
According to the processing of steps S510 to S512 described below,
And the timing data of the code specified by the key press
Is determined in step S506 based on the designation.
The root and code type are stored in the code memory
It is written to the rear. That is, first, in step S510, the RAM
Increment count which is a variable secured on 203
The value of the IC is stored in the RAM 203 as the interval time.
In the code memory area as shown in FIG.
Is done. The address in this case is, in particular,
Is indicated by an address pointer (not shown).
After the write process, the value of the address pointer is incremented by one.
You. The address pointer has a code memory recording mode.
When the mode is turned on, a switch process of FIG.
In step S720, the top address of the code memory area is
Les is set. In addition, the increment counter I
The value of C is the next step when the key is pressed for the previous chord designation.
After being cleared in step S511, the
Step S1104 of interrupt processing in FIG. 11 → S
It has been incremented by the processing of 1105. Obedience
Thus, the value of the increment counter IC,
The bar time is changed from the previous code specification to the current code specification.
This indicates the elapsed time until the hour. Next, in step S511, the above-described ink
The value of the increment counter IC is cleared. This clear
The time point is the starting point of the elapsed time until the next code specification.
You. Also, the variable M secured in the RAM 203
The contents of the AX flag are also cleared. This MAX flag
This will be described later. Subsequently, in step S512, the above-described process is performed.
Code root and code type determined in step S506
Shown in FIG. 3 in the code memory area of the RAM 203.
Is written as 1-byte data. this
In this case, the address is R
The address pointer (not shown) in the AM 203 is used.
After the write processing, the address pointer
The value is incremented by one. On the other hand, the code memory recording mode is currently off.
Has not been performed and the determination in step S509 is NO.
In step S513, and in step S506 described above.
The determined route and chord type are used in normal automatic accompaniment processing.
To be used, a RAM 203 (not shown)
Stored in the code register. After the processing in step S512 or S513
Means that the processing after the processing in step S501 is executed again.
You. Repetition of the processing of steps S501 to S513 described above
In step S3, no key press or key release has occurred, and
If the determination of 502 is NO, step S514
Then, as in the case of step S509, the current switch is
Code memory recording mode on / off switch
Switch 103 turns on the code memory recording mode.
Is determined. At present, the code memory recording mode is turned on.
If the determination in step S514 is NO,
The process proceeds to the switch process of FIG. 7 described below. Currently, code memory
The recording mode is on, and the determination in step S514 is
In the case of YES, the following steps S515 to S515 will be described.
In S518, the overflow of the increment counter IC is performed.
Processing for preventing a row is executed. That is, first, in step S515, the RAM
The MAX flag, which is a variable secured in 203, is turned on
Is determined (“1” or not).
You. This MAX flag is executed at regular intervals.
In step S1104 of the interrupt process of step 1
FF (h) where the value of the increment counter IC is the maximum value
(When the time unit td is this maximum value
Is set to be divisible), step S
It is turned on by the processing of 1106. If the MAX flag is not turned on and the step
If the determination in S515 is NO, the switch of FIG.
Processing. The MAX flag is on and
If the determination in step S515 is YES, step S51
6. In the code memory area of the RAM 203,
The value FF (h) is shown in FIG.
Is written. The address in this case is stored in the RAM 20
Instructed by an address pointer (not shown) in 3
After the write process, the value of the address pointer is incremented by +1.
Is done. Next, in step S517, the increment
The values of the counter IC and the MAX flag are cleared. So
Then, in step S518, the time
The code FF (h) indicating the time extension is
Write to the memory area as shown in FIG.
It is. The address in this case is the case in step S516
In the same manner as described above, the address
Instructed by the interface, after write processing, the address
The value of the pointer is incremented by one. Thereafter, the process proceeds to the switch processing of FIG. that's all
By the processing of steps S515 to S516,
During regular operation, the increment counter IC reaches the maximum value.
In the event of automatic accompaniment playback, show an extension
The following increment cow via code FF (h)
By adding the value of the printer IC to the above maximum value,
It is possible to appropriately control the timing of specifying the code. Next, the switch processing shown in FIGS. 7 and 8 will be described.
Will be explained. This processing is performed as described above with reference to FIGS.
9 and the accompaniment process of FIGS.
Returned and executed. In the following description, the AI mode
Code on / off and code memory recording mode on / off
The AI mode file (not shown) in the RAM 203 is
The lag and code memory recording mode flag is turned on.
Is determined by determining whether the
It is. First, in step S701 in FIG.
The matrix of section 102 is scanned and the next step
In step S702, one of the switches is
It is determined whether the switch has been operated. When the switch is operated and the determination in step S702 is made.
If the determination is NO, the process proceeds to the accompaniment process of FIG. 9 described below.
The switch is operated, and the switch is set to the AI mode on /
The off switch 105 and the current code memo
If the mode is not the re-recording mode, steps S702 and S70
3 is YES, and the determination in step S704 is NO.
In step S705, the AI mode is turned on / off.
Switching is performed. Specifically, the AI mode is currently off.
If it is off, the AI mode flag in the RAM 203
Is turned on, and if the AI mode is currently on, A
The I mode flag is turned off. When the AI mode on / off switch 105 is operated.
When in code memory recording mode when created
In FIG. 9, the AI mode is not switched on / off.
To the accompaniment process. When a switch is operated, the switch
Code memory recording even with mode on / off switch 105
If it is not the mode on / off switch 103,
If the determination in step S702 is YES, steps S703 and S
The determination at 706 is NO, and at step S707,
Other switch processing is performed, and thereafter, the accompaniment processing of FIG.
Proceed to. When the switch is operated, the switch is
Memory recording mode on / off switch 103,
And if it is not currently in the code memory recording mode,
If the determination in step S702 is YES, the process proceeds to step S703.
If the determination is NO, the determination in step S706 is YES,
If the determination in step S708 is NO, step S7 in FIG.
In steps 18 to S721, the code memory recording mode is turned on.
Is executed. That is, first, in step S718, the code
Corresponds to the memory recording mode on / off switch 103
The LED 104 (see FIG. 1) is turned on. Next,
In step S719, the increment used for the automatic accompaniment process is
Counter IC, decrement counter DC, MIN
The flag and the MAX flag are cleared. Subsequently, at step S720, the code memo
The recording start address of the rear area is particularly shown in FIG.
Set to an address pointer not shown. Address port
As described above, the value of the interface is a step in the keyboard processing.
Steps S510 and S512 ( FIG. ), S516, S518
( FIG. ) Is referred to at the time of each write processing. Then, in step S721, the code memo
The re-recording mode is turned on. Specifically, the RAM 203
The code memory recording mode flag (not shown)
Turned on. Thereafter, the process proceeds to the accompaniment process of FIG. On the other hand,
Switch is operated, and the switch is
Mode on / off switch 103.
Memory recording mode and not currently in AI mode
In this case, the determination in step S702 is YES,
The determination in S703 is NO, and the determination in steps S706 and S708 is NO.
The determination is YES, and the determination in step S709 is NO.
In steps S717 and S721 in FIG.
Processing for turning off the re-recording mode is executed. That is, first, in step S717, the code
Corresponds to the memory recording mode on / off switch 103
The LED 104 (see FIG. 1) is turned off. And
In step S721, the code memory recording mode is turned off.
You. More specifically, a code (not shown) in the RAM 203 is used.
The memory card recording mode flag is turned off. Thereafter, the process proceeds to the accompaniment process of FIG. switch
Is operated, and the switch is set to code memory recording mode
ON / OFF switch 103.
Recording mode, and currently in AI mode
Is YES in step S702, step S70
3 is NO, steps S706, S708, S70
9 is YES, and steps S710 to S710 in FIG.
In step S716, a code correction process for the AI mode is executed.
After that, in steps S717 and S721, the code
Processing for turning off the memory recording mode is executed. This
When the code memory recording mode is turned off, the AI mode
If the code is specified, the code
This is a feature related to the present invention. First, in step S710, the code memory
LED corresponding to recording mode on / off switch 103
104 (see FIG. 1) is turned on and off. Next,
In step S711, the value of the address pointer in the RAM 203
Is initialized to the recording start address in the code memory area.
After the start, the address pointer starts from the beginning of the recording start address.
Are sequentially incremented while the code memory area
Event (route and code type) recorded in
Are sequentially checked. Then, in step S712, the code memo
The root and code type values are non-
It is determined whether or not there is a value FE (h) indicating the mode. No
If the value FE (h) indicating the code is found,
In step S713, from the event indicating the non-code
Until the next code (hereinafter referred to as the next code)
The interval time is read, and in step S714,
The value of the interval time is shorter than the threshold value (α × td)
It is determined whether or not. td is the switch section by the player
102 based on the operation of a tempo switch (not shown).
Time unit of the increment counter IC etc.
(See FIG. 11), and α is a predetermined constant. Follow
The threshold value (α × td) is the code memory recording mode.
Variable in proportion to the tempo specified at the time of play. From an event indicating a non-code to the next code
Is shorter than the threshold (α × td)
If the determination in step S714 is YES, the player
Input is incorrect, and the performer
Can be estimated that the next code should have been entered
In step S715, the code memory of the RAM 203
Non-code code type FE (h) on area is next code
Is corrected to the root and code type of the next code.
The code type is modified to the code FF (h) indicating the extension of time.
You. On the other hand, from the event indicating non-code, the next
The interval time to the code is longer than the threshold (α × td)
If the determination in step S714 is NO, the player
Incorrect specification of non-code when code should not be specified
Since it can be estimated that it has been done, in step S716,
Non-code code in the code memory area of the RAM 203
The code type FE (h) indicates the code extension FF (h)
Will be corrected. After the processing in step S715 or S716
Returns to step S712, and stores the code
The value FE (h) indicating non-code is further seen on the memory area.
It is determined whether or not it has been used, and if it is determined that it has been found
In this case, the codes of steps S713 to S716 described above are used.
The correction process is repeated. In the code memory area of the RAM 203,
When the value FE (h) indicating the
If the determination in step S712 is NO, as described above,
In steps S717 and S721, the code memory recording mode
Is turned off, and then the accompaniment shown in FIG.
Proceed to processing. Next, the accompaniment processing of FIGS. 9 and 10 will be described.
I will tell. This process is automatically performed by the player using the switch unit 102.
When the accompaniment process is instructed, the keyboard process shown in FIGS.
7. It is executed sequentially and repeatedly together with the switch processing of FIG.
You. In the following description, the code memory playback mode is used.
The on / off of the memory is not particularly shown in the RAM 203.
Code memory playback mode flag is on or off
It is determined by determining whether or not it has been performed. First, in step S901 of FIG.
The value indicated by the rhythm counter RC which is a variable in 203 is
The rhythm selected by the player by setting the switch unit 102
At the preset sounding timing corresponding to
It is determined whether it is equal to the value. Rhythm counter RC
The value corresponds to the interrupt processing shown in FIG.
In step S1101, the switch by the player
Operation of the tempo switch (not shown) of the
Incremented by the time unit td determined based on
It is. The value of this rhythm counter RC is
When the value reaches the maximum value (time unit t
Suppose d is set to divide this maximum value.
11), and the determination in step S1102 in FIG.
The value is returned to 0 in step S1103. this
As a result, the value of the rhythm counter RC corresponds to the beat timing
And change cyclically. The value indicated by the rhythm counter RC is the sound timing.
Is not equal to the value in the
In the case of NO, in step S911 of FIG.
After the various miscellaneous processes are executed, the keyboard process shown in FIG.
Return to The value indicated by the rhythm counter RC is a sound timing.
Is equal to the value in the
In the case of S, in step S902, the code memo is
It is determined whether the mode is the replay mode. The value indicated by the rhythm counter RC is the sound timing.
At the timing when it becomes equal to the value in the
In the switch section 102, the code memory playback mode is designated.
If not specified, performer at that time
Of the code specified by
Automatic accompaniment processing is executed. That is, first, in step S904, the key
In step S513 of FIG.
The route and code type stored in the register are read out.
You. Next, in step S909 of FIG.
And the chord type and the current value of the rhythm counter RC.
And the chord data for automatic accompaniment to be pronounced is calculated.
The tone generation of the chord sound is controlled for the sound source 204.
You. Note that the value of the rhythm counter RC is, as described above,
It supports beat timing, which allows you to switch chords.
The round shape and the like are determined. Thereafter, in step S910, a rhythm sound or the like is generated.
Other accompaniment processing such as sound control of
Done. Then, in step S911, various types of performance
After the miscellaneous processing is performed, the processing returns to the above-described keyboard processing of FIG.
You. On the other hand, the value indicated by the rhythm counter RC sounds.
At the timing when it becomes equal to the value at the timing,
The player operates the switch 102 for the code memory playback mode.
Code, the code memory record described above
In the mode, the code memory area in the RAM
Is recorded by the performer and the AI mode is specified.
If the code memory recording mode is
Code in the code memory area where
Automatic accompaniment processing is performed based on the
Be executed. That is, first, in step S903, the RAM
Determines whether the MIN flag on 203 is on
Is done. Although not particularly shown, a code memory playback mode is not shown.
When the mode is specified, the MIN flag is turned off and
Code memory indicated by the address pointer
Reads the first interval time of the area (see Fig. 3)
And the value is a decreme
Set to the address counter DC and the value of the address pointer
Is incremented by one. Then, the decrement counter DC
The value corresponds to the interrupt processing shown in FIG.
In step S1107 → S1108, the performer
Tempo switch (not shown)
Time unit td determined based on switch operation.
Be incremented. And the above code memory area
Time corresponding to the interval time read from
And the value of the decrement counter DC reaches 00 (h)
Is reached (the value set in the decrement counter DC).
The Tarval time is divisible by the time unit td),
The determination in step S1107 is YES, and the
At 1109, the MIN flag is turned on. The MIN flag is turned on and step S903 is performed.
If the determination is YES, step S905 in FIG.
Point with the current address pointer of the code memory area.
Code data (route and code type) shown (see Fig. 3)
Is read, and the value of the address pointer is incremented by one.
You. Thereafter, in step S906, the MIN flag is cleared.
In step S907, the code memory area
The interval time indicated by the dress pointer
Is read and set in the decrement counter DC.
You. On the other hand, when the MIN flag is not
If the determination in step S903 is NO, the data has already been read
The used code data is used as is. continue,
The current code data is not the value FF (h) indicating the time extension.
If NO, the determination in step S908 is NO, and
In step S909, the route and code type of the code data
Is generated based on the current value of the rhythm counter RC.
Automatic accompaniment chord data is calculated.
Is controlled to generate a chord sound. The current code data has a value F indicating a time extension.
If it is F (h), the process proceeds to step S907.
The process is simply a time extension process
Then, the determination in step S908 becomes YES, and the chord sound
Is not controlled. Thereafter, in step S910, a rhythm sound or the like is output.
Other accompaniment processing such as sound control of
Done. Then, in step S911, various types of performance
After the miscellaneous processing is performed, the processing returns to the above-described keyboard processing of FIG.
You. Next, another embodiment of the present invention will be described.
You. In the embodiment described above, the non-chord is
When the key is pressed and the code memory recording mode ends, the code
Non-code data is found in the memory area, and
Subsequently, code data is found within a certain timing.
If the code data is
By being moved to the timing,
A key mistake has been corrected. On the other hand, another embodiment described below will be described.
Now, when a non-chord is pressed by the player,
Is ignored and recorded in the code memory area
At the end of the code memory recording mode.
Performer arbitrarily set the interval time on the area
If a code within the reference value is found, the subsequent code
Data up to the timing of the preceding code data
Moved and preceding code data is ignored
The key press mistake is corrected.
You. The configuration of this embodiment is the same as that of the above-described embodiment.
It is similar to FIGS. 1 and 2 in the example. FIG.
Processing corresponding to the initial processing in FIG.
It is a flowchart of the operation of the management. In FIG. 12, FIG.
The process with the same step number as in the case of
It has the same function as the case. FIG. 12 is a flowchart showing the operation of FIG.
The difference from the flowchart is that in step S1201,
A value is stored to determine the length of the interval time
In the reference register, which is a variable in the RAM 203,
This is the point at which the default value is set. Next, the keyboard processing in the above-described embodiment will be described.
The operation flowchart of FIG. 5 which is a part of FIG.
Is adopted as it is. Subsequently, FIG.
Operation flowchart of FIG. 6 which is a part of the keyboard processing in the embodiment.
6 is an operation flowchart corresponding to a chart. In FIG.
In this case, the processes with the same step numbers as in FIG.
Has the same function as in FIG. The operation flowchart shown in FIG. 13 corresponds to the operation shown in FIG.
The difference from the flowchart is that step S507 in FIG.
And the non-code executed as S508
The processing for recording in the memory area is not shown in FIG.
It is. As a result, in this embodiment, the player
If a non-code key is pressed, it is ignored and
No data is recorded in the memory area. next,
14 and 15 show FIGS. 7 and 8 in the embodiment described above.
Is an operation flowchart of a process corresponding to the switch process of FIG.
is there. 14 and 15 are the same as those in FIGS.
The processes with the same step numbers are the same as those in FIGS.
It has the same function. First, the operation flowchart of FIG.
7 is different from the operation flowchart of FIG.
Switch 2 is operated and the switch is set to the reference register value
If the switch is a +/- switch, the process proceeds to step S1401.
The determination is YES, and in step S1402, the switch
The reference register value is incremented according to the switch operation.
(+) Or decrement (-). this
Allows the performer to correct key press mistakes when specifying chords
The criteria for the length of the interval time
Can be set as desired. Next, the operation flowchart of FIG.
8 is different from the operation flowchart of FIG.
As a code correction operation, steps S712 to S7 in FIG.
Steps S1501 to S1504 instead of the 16 processing groups
Is executed. That is, first, in step S1501, the code
Event (route and code)
The current code data (hereafter, the current code
From the next code data (hereafter, next)
Interval time until code event)
Is issued, and in the next step S1502, the interval
It is determined whether the time is shorter than the reference register value. Interval time is shorter than reference register value
If the determination in step S1502 is NO, the current
No code modification is made to the event. Inter
Since the val time is shorter than the reference register value, step S150
If the determination in step 2 is YES, in step S1503, the RAM
The current code event on the code memory area 203
The code and code type are corrected to the root and code type of the next code.
The code of the next code and the code type indicate a time extension.
FF (h). Then, the data recorded on the code memory area is recorded.
Processing has not been completed for all current code events
If not, the determination in step S1504 is NO and the
Returning to the processing of step S1501, the
Processing ends for all recorded current code events
Then, the determination in step S1504 becomes YES.
Steps S717 and S721 similar to those in FIG.
The process to turn off the code memory recording mode is executed.
Is performed. Thereafter, the accompaniment processing of FIG.
The same processing as described above is also performed in this embodiment. Also,
11 executed at regular intervals in the embodiment shown in FIG.
Interrupt processing is also employed as is in this embodiment. According to the first aspect of the present invention, recording means
Non-code data is detected on the
From the data to the next specified code data.
If the mining difference is less than the predetermined value, the non-code
The data is replaced with the code data specified next.
To correct the code specification
Becomes possible. As described above, the performer originally intended
Chord accompaniment can be reproduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external view of an embodiment of the present invention. FIG. 2 is a block diagram of an embodiment of the present invention. FIG. 3 is a data configuration diagram of a code memory area. FIG. 4 is an operation flowchart of an initial process. FIG. 5 is an operation flowchart (part 1) of keyboard processing. FIG. 6 is an operation flowchart (part 2) of keyboard processing. FIG. 7 is an operation flowchart of a switch process (part 1);
It is. FIG. 8 is an operation flowchart of a switch process (part 2);
It is. FIG. 9 is an operation flowchart (1) of an accompaniment process. FIG. 10 is an operation flowchart (part 2) of the accompaniment process. FIG. 11 is an operation flowchart of an interrupt process. FIG. 12 is an operation flowchart of an initial process in another embodiment. FIG. 13 is an operation flowchart (part 2) of keyboard processing in another embodiment. FIG. 14 is an operation flowchart (part 1) of a switch process in another embodiment. FIG. 15 is an operation flowchart (part 2) of a switch process in another embodiment. DESCRIPTION OF SYMBOLS 101 Keyboard section 102 Switch section 103 Code memory recording mode on / off switch 104, 106 LED 105 AI mode on / off switch 201 CPU 202 ROM 203 RAM 204 Sound source 205 D / A converter and amplifier 206 Speaker 207 bus

Claims (1)

(57) [Claims 1] A code designating operation is recorded in a recording means as code data indicating an attribute of the code and timing data indicating a timing at which the code is designated, and the code is transmitted from the recording means. In an automatic accompaniment apparatus for sequentially reading data and the timing data, and performing an automatic accompaniment based on a chord sound corresponding to the read chord data at a timing corresponding to the read timing data, it is possible at the time of a recording operation for the recording means to be performed. Non-code data recording means for recording non-code data indicating an improbable code and timing data indicating the designated timing of the non-code data when a non-existent code is designated; and Non-code data for detecting the non-code data from Detecting means, after the recording operation on the recording means, the code data specified next to the non-coded data from the designated timing of the non-coded data detected by the non-coded data detecting means on the recording means A timing difference calculating means for calculating a timing difference up to a designated timing, and, after the recording operation on the recording means, when the timing difference calculated by the timing difference calculating means is smaller than a predetermined value, Then, at the specified timing of the non-coded data detected by the non-coded data detecting means, the code data specified next to the non-coded data is corrected instead of the non-coded data. And the code data specified next to the non-code data. In specifying the timing of the data, corrected to the code data is not specified, if the timing difference calculated by the timing difference calculating means is not less than the predetermined value, on the recording means, the non-code data An automatic accompaniment apparatus, comprising: a chord correction unit that corrects the non-code data so that the non-code data is not specified at the specified timing of the non-code data detected by the detection unit .