JPH1039862A - Playing data editor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To arbitrarily shift playing patterns and to obtain the playing patterns of a variety of motif by cyclically shifting the time positions over the entire part of the playing data in the range set by a range setting means within the range set by the shift quantity set by a shift quantity setting means, thereby editing the playing data. SOLUTION: The range of the playing data (a) is set by the range setting means as the range to be processed. When the respective notes of the playing data are desired to be shifted, for example, in a forward direction by one beat over the entire part, this one beat is assigned as the shift quantity by the shift quantity setting means. The setting of the shift quantity may be executed by a note length, by the number of clocks or by the time as well. The editing means edits the playing data by shifting the playing data in the forward direction by one beat (b) and bringing the note protruding from this range, 'Do', in this example, to the last of the playing data (c) to rotate as a result of such shift.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a performance data editing device for editing performance data used in an automatic performance device.
More specifically, the present invention relates to a performance data editing device that edits the performance timing of performance data so as to be shifted back and forth in time.

[0002]

2. Description of the Related Art Conventionally, in an automatic performance apparatus, a plurality of performance patterns (sequence data) of about 2 to 4 bars are created, and these are appropriately combined to perform a desired tune. I have. In the case where these performance patterns are composed of repetitive patterns, by shifting the phases of the patterns, it is possible to obtain performance patterns with different musical ideas. This is called a "clock shift"
This function shifts the data in the specified range to the front or back, but as a result, the data in the protruding section is usually discarded.

For example, as shown in FIG. 9A, a two-measure sequence data of "do, mi, so, mi, do, mi, so, mi" as a performance pattern is one beat forward. When the minute clock shift is performed, as shown in FIG. 9 (b), the leading “do” protrudes out of the range and is discarded, the sound disappears, and the fourth beat of the second bar becomes blank. Would.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to make it possible to obtain a variety of musical performance patterns by arbitrarily shifting one performance pattern. It is in.

[0005]

In order to solve the above-mentioned problems, a performance data editing apparatus according to the present invention has a storage means for storing performance data, and a processing target among the performance data in the storage means. Range setting means for setting a range, shift amount setting means for setting a shift amount for shifting a time position when performance data is played, and entire performance data in the range set by the range setting means. Editing means for editing the performance data by cyclically shifting the temporal position within the set range by the shift amount set by the shift amount setting means.

[0006] The editing means calculates a destination to which each note of the performance data in the range set by the range setting means is shifted by the shift amount designated by the shift amount setting means. Destination calculating means, and for a note whose moving destination calculated by the first moving destination calculating means is out of the range set by the range setting means, based on the amount out of the range, Comprises a second destination calculation means for recalculating the destination so that the value falls within the range, based on a calculation result of the first destination calculation means and a calculation result of the second destination calculation means. It can be configured to edit performance data.

[0007]

When there is performance data, for example, as shown in FIG. 1A, the range of the performance data is set by the range setting means as the range to be processed. Then, when it is desired to shift each note of the performance data by, for example, one beat forward in the whole, the one beat is designated as the shift amount by the shift amount setting means.
The setting of the shift amount may be based on the note length, the number of clocks, or the time. Editing means
Performance data As shown in FIG.
A note shifted out of the range as a result of the shift is shifted forward by a beat, and in this example, "do" is rotated so as to be brought to the end of the performance data as shown in FIG. 1 (c). Edit performance data. Note that when shifted backward, notes that run off the rear side are brought to the beginning of the performance data.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a diagram showing a configuration of an automatic performance device equipped with a performance data editing device as one embodiment of the present invention. In FIG. 2, a CPU 1 is a central processing unit that controls the entire apparatus, and controls a sound source 6 according to a program stored in a ROM 3 and edits sequence data stored in a RAM 2. The RAM 2 is a random access memory that stores performance information input from the keyboard 7 or the like as sequence data.
The ROM 3 is a read-only memory in which a program executed by the CPU 1 is stored. MIDI I /
F4 is an interface for exchanging MIDI messages with external keyboards, sound sources, and the like. The operation panel 5 includes a mode switch for switching the operation of the apparatus, various switches used for editing sequence data, and a display for displaying sequence data and the like. The sound source 6 is a circuit for generating a musical tone upon receiving a sound generation command and a tone color designation under the control of the CPU 1. The keyboard 7 is a device for inputting performance information.

A detailed example of the operation panel 5 is shown in FIG. FIG. 3 shows the display screen of the display unit at the time of editing and the controls related to the editing operation. The display screen 51 is used for editing performance data (sequence data), in particular, when performing “rotate shift” in which time information of performance data is cyclically shifted within a specified range (a range from a measure to a measure). It is an example of the screen displayed. In the screen, the type of edit is displayed in the display area 51a. The display areas 51b and 51c are portions for specifying a range to be edited in bar units. In the example of FIG. 3, the range from the first bar to the fifth bar, that is, the range from the first bar to the fifth bar is specified. The display area 51d is a part for specifying a shift (moving) time in clock units, and the display area 51e is a cursor and indicates which value is to be input.

A dial 52 is a dial for changing a numerical value, and is used to correct data at the current cursor position. The cursor movement key 53 is used to move the cursor 51e displayed on the display screen. The execute key 54 is used to correct the actual sequence data based on each specified value.

Next, the data format of a record in the sequence data used in the automatic performance device of this embodiment will be described. FIG. 4 is a diagram showing an example of the format of a note record, that is, a record for generating one sound. The sequence data used in this embodiment is a set (record sequence) of records in which one record is composed of 8 bytes. First byte of record
(step) is called a step, and represents the number of clocks up to the next record, and represents a time interval. Second
The byte (opcode) is called an operation code, and represents what the record itself is, for example, a code representing each of a note, a pitch bend, and the like. The third byte (ch) represents the MIDI channel, and the fourth byte (ch)
The bytes (flags) are a group of flags that are temporarily used when performing the edit processing, and include a processed flag indicating whether or not the processing of the record has been completed.

The meaning of the fifth to eighth bytes differs depending on the code of the second byte. Here, only the case where the second byte is a note will be described. If the record represents a note, the fifth byte (on-vel) is on velocity,
The sixth byte (off-vel) is off-velocity, and the seventh and eighth bytes (gate time) are two bytes indicating the length of this note, that is, the gate time. Thus, the note record used here is of a type in which note-on and note-off are represented by one record.
Therefore, when performing a process of deleting or moving a certain note, it is sufficient to process only one target record, and it is not necessary to separately process note-on and note-off.

The operation of this embodiment will be described below with reference to FIGS. FIGS. 5 and 6 are flowcharts showing the edit processing related to the rotate shift executed in the apparatus of the embodiment. In the present embodiment, a data memory management system is used to perform this editing process. This data memory management system is built on a system that manages data in the above format. This is a system designed to make it easy to insert and delete data.It manages the order of records that occurs with the insertion and deletion of records, and manages time such as rewriting steps, It has functions such as moving a read / write pointer to a designated clock position.

Hereinafter, a system call in the data memory management system will be described in detail.

Pointer move call [0015] From the beginning of the row of records in the sequence data, reading is performed while sequentially adding the value of the step of each record. When the specified clock position is reached, processing is stopped there. The pointer moves to point to the record at the specified clock position.

If there is no record corresponding to the specified clock position, the pointer is moved so as to point to the nearest record after the clock position. Then, the clock position of the record indicated by the moved pointer is obtained.

Record read call Reads the contents of the record currently pointed to by the pointer.

Record Insert Call Inserts a new 8-byte record at a specified clock position. When inserting, step before and after the record (step)
And the step of the own record is adjusted so that the total sum of the steps of the entire sequence data does not change.

For example, when there is a record sequence as shown in FIG. 7A, as shown in FIG.
Specify a 0th clock and specify a new record (.. xx xx xx
xx xx xx xx). Specifically, this new record is inserted between the 1120th clock and the 1220th clock, and the record into which the value of the step of the record at the 1120th clock is newly inserted starts from the 1120th clock. "3" indicating that the clock is 30 clocks away
0 ", and the value of the step of the newly inserted record is set to 1150
"7" indicating that it is 70 clocks away from the clock
0 ". In addition, as shown in FIG.
If a record exists at 150 clocks, it is inserted next to the last record on the same clock, and the value of the step is rewritten accordingly.

Note that the record after the record inserted by this record insertion call may be shifted backward, and the record pointed to by the pointer may be different from the record pointed to in the past. In this case, the record pointed to in the past is indicated. So move the pointer.

Record delete call This call is used after the pointer is moved to a desired position by a pointer move call or a pointer increment call which will be described later. Currently, the operation of the record pointed to by the pointer
Rewrite the code (opcode) to NOP (NO Operation). This rewrite invalidates the record. The record in which the operation code is rewritten to NOP is deleted by a record deletion call described later.

The pointer increment call pointer is advanced to point to the next record, and the clock position of the record to be newly pointed is acquired. For example, conventionally, when the clock position of the record pointed to by the pointer is the 1000th clock and the value of the step of the record is 120 clocks, the clock position of the record newly pointed to by the pointer is the 1120th clock. To get.

Record Delete Call Records whose operation code has been rewritten to NOP by the record delete call are sequentially detected from the record sequence and all are deleted. When deleting records, adjust the steps before and after so that the total sum of the steps in the deleted record sequence does not change. For example, when there is a record sequence shown in FIG. 7D, a record at the 1120th clock whose operation code is NOP is detected, and as shown in FIG. Tenth
The value of the step (step) of the record of the 00th clock is
The record at the 1220th clock is set to “220” indicating that it is 220 clocks away from the record at the 1000th clock. By repeating such processing,
Erase all records whose operation code is NOP.

Next, a specific processing procedure of the edit processing shown in FIGS. 5 and 6 will be described using the data format and the system call of the data memory management system.

First, a record sequence (sequence data) of a performance pattern to be processed is stored in a data
Store in the memory management system. This record sequence may be read from a floppy disk device, or may be input by a real-time recording function or a step recording function.

The parameters for performing this editing process are the start clock position C _{START of} the processing range, the end clock position C _END of the processing range (however, C _END itself is outside the processing range), and the rotating clock. The number C _BIAS (a positive number means move each note in the bar backwards, a negative number means a forward move)
4 of conditions for narrowing down the data to be processed (note range, restrictions on the type of operation code, or designation of channel)
These are set by the user through a panel operation on the operation panel shown in FIG. 3 (step S
0).

When the execution of the processing is instructed by the panel operation, the processing is initialized by first clearing all the processed flags included in each record (step S1). This processed flag indicates whether or not the record has already been subjected to the shift processing, and is to prevent the same record from being processed redundantly. Then, the processing clock position C which is a variable representing the clock currently being processed.
Substitute the start clock position C _START for _SRC (step S
2), a pointer move call is performed by giving the processing clock position C _SRC and the pointer is moved to the record of the processing clock position C _SRC (= C _{STAR T} ) or the first record after the processing clock position C _SRC. It is moved to point, to update the processing in the clock position C _SRC by acquiring processing in the clock position C _SRC clock position of the record (step S3). This corresponds to the performance pattern “do, mi, so, mi, do, mi,
In the case where the first "do" of "so, mi" is rotated and shifted, the pointer is moved to the position of the first "do".

Since the subsequent processing is repeated until the processing clock position C _SRC reaches or exceeds the terminal clock position C _END , it is determined that C _SRC <C _END (step S4), and if YES, step S5 is performed. Thereafter, if NO, a record erasure call described later is performed (step S16), and the process ends. In the example of FIG. 1, this corresponds to sequentially performing the processing of step S5 and subsequent steps on the note after the leading “do”.

First, the record currently pointed to by the pointer is read using the data read call (step S).
5). The read data is stored as a record at hand. In the example of FIG. 1, this corresponds to a process of reading out and holding the record of the first "do" in the first processing loop (hereinafter, the record of the note after the "do" every time the processing loop is repeated).

The operation code (o
By examining the pcode) and the processed flag, it is determined whether or not this record is to be processed (step S6). If the record is to be processed, the record in the data memory management system is deleted using a record delete call. (Step S7). In the example of FIG. 1, this is a process of deleting the record of the leading "do" from the record sequence of the performance pattern. If not, the process jumps to step S15 without performing the following rotate shift process. Records that are not subject to this processing include those that are outside the specified note range, those that have different opcodes, those that have different channels, and those that have already undergone rotate shift processing (the processing completion flag Set records).

Thereafter, the destination of the record that has been read at hand is obtained (step S8). The destination clock position C _DST can be obtained by C _DST = C _SRC + C _BIAS . For example, in the example of FIG. 1, when the performance pattern is rotated and shifted forward by one beat, _CBIAS is the number of clocks corresponding to this one beat.

Here, the destination clock position obtained as described above is: (1) If C _DST <C _START , C _DST = C _END −
(C _START -C _DST ) and recalculate (steps S9, S
10). This is because, in the example of FIG. 1, when the rotate shift of the performance pattern is shifted by one beat in the forward direction of the measure, the moving destination of the leading "do" comes out before the first measure. This corresponds to a process of recalculating the fourth beat of the second bar.

(2) If C _DST ≧ C _END , C _DST =
C _START + (C _DST −C _END ) is recalculated (steps S11 and S12). In the example of FIG. 1, when the rotate shift of the performance pattern is shifted by one beat in the backward direction of the measure, the moving destination of the last “mi” appears outside the second measure. Therefore, this corresponds to the process of recalculating the first beat of the first bar.

Then, the data insertion call (ma-ins) is performed by giving the destination clock position C _DST obtained so far and the record that is being read at hand (step S1).
4). This means that, in the example of FIG.
This corresponds to a process of inserting the note on the fourth beat of the measure or the note after the second at the beat position one beat before. When the data is inserted by the data insertion call (ma-ins), the processed flag is set by setting the processed flag of the record being read, and then the record is inserted (step S1).
3) In step S6, this record is not processed again.

Next, a pointer increment call is performed, the pointer is incremented to point to the next record, and the clock position of the record to be newly indicated is acquired in the processing clock position C _SRC , and the processing is performed. Middle clock position C
_{The SRC} is updated (step S15). This is to prepare for reading out the record to be processed next. The processing up to this point is performed by setting the processing clock position C _SRC to the terminal clock position C.
Repeat until _END is reached or exceeded (step S4).
If it is determined in step S4 that C _SRC <C _END is NO, a record delete call is made, and records invalidated by the record delete call (records whose operation code has been rewritten to NOP) are deleted all at once. (Step S
16).

In implementing the present invention, various modifications are possible. For example, in the above-described embodiment, the record of the sequence data to be processed is in a format including both note-on and note-off information of one note in one record, but the present invention is not limited to this. Instead, for example, as shown in FIG. 8, note-on and note-off may be separate records like MIDI data. In this case, when processing a note-on record, the corresponding note-off record may always be found and processed together. The same applies to erasing and transposing. In the clock rotation process, after performing a process performed when a note-on record to be processed is found, a corresponding note-off record is searched for, and the same process is performed on the record. In other words, note-on and note-off may be moved according to the same rule. To find the corresponding note-off record, note number,
The clue may be that all or part of the channel is the same as the note-on record.

[0037]

As described above, according to the present invention, it is possible to easily obtain performance patterns of various musical ideas by arbitrarily shifting one performance pattern.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a basic principle of the present invention.

FIG. 2 is a diagram showing a configuration of an automatic performance device equipped with a performance data editing device as one embodiment of the present invention.

FIG. 3 is a diagram illustrating an example of an operation panel of the embodiment device.

FIG. 4 is a diagram illustrating an example of a data format of a record used in the embodiment device.

FIG. 5 is a flowchart illustrating a procedure of an edit process (1/2) related to a rotate shift performed by the apparatus according to the embodiment.

FIG. 6 is a flowchart illustrating a procedure of an edit process (2/2) related to a rotate shift performed by the apparatus according to the embodiment.

FIG. 7 is a diagram illustrating a process of inserting a new record in the apparatus according to the embodiment.

FIG. 8 is a diagram illustrating another format of a record to be handled.

FIG. 9 is a diagram illustrating a conventional method.

[Explanation of symbols]

1 CPU 2 RAM 3 ROM 4 MIDI I /
F 5 Operation panel 6 Sound source 7 Keyboard 51 Display screen 52 Dial 53 Cursor movement key 54 Execution key

Claims (2)

[Claims] 1. A storage means for storing performance data, a range setting means for setting a range to be processed among the performance data in the storage means, and a time position when the performance data is played back and forth. Shift amount setting means for setting a shift amount to be shifted; and the entire performance data in the range set by the range designating means is temporally shifted within the set range by the shift amount set by the shift amount setting means. Editing means for editing performance data by cyclically shifting the position. 2. The method according to claim 1, wherein said editing means calculates a destination which is shifted by a shift amount set by said shift amount setting means with respect to each note of the performance data in the range set by said range setting means. (1) a destination calculation means, and for a note whose destination calculated by the first destination calculation means is out of the range set by the range setting means, based on an amount out of the range. Second destination calculation means for recalculating the destination so that the destination falls within the range, based on a calculation result of the first destination calculation means and a calculation result of the second destination calculation means. 2. The performance data editing device according to claim 1, wherein the performance data editing device is configured to edit the performance data.