JPH0756564A - Performance data processor - Google Patents

Abstract

PURPOSE:To perform quantization as intended by a user at the time of quantizing the sound emission timing of automatic performance data inputted in real time. CONSTITUTION:Plural rules 1 to 6 are used to subject a quantization object musical note 40 to six kinds of quantization, and results are stored in areas 1 to 6 of an edit buffer as candidates 1 to 6. A user tries (TRY) to hear these candidates and selects and indicates (ENTER) the candidate considered as optimum, thereby writing this quantization data in automatic performance data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a performance data processing apparatus for performing so-called quantizing processing for correcting real-time input automatic performance data in accordance with accurate step timing.

[0002]

2. Description of the Related Art In real-time automatic performance data input, an event method is generally used in which performance contents (event data) such as key-on and key-off are stored in chronological order together with their timing data. In real-time performance, the timing at which an event occurs is recorded as it is as timing data even if the performance deviates from the tempo clock. For this reason, a performance data processing apparatus having a function (quantize function) of correcting the timing data having such a deviated content into accurate timing data has been put into practical use.

In the quantize operation, first, the resolution of the step timing (minimum step) to which the timing data, which is the timing of event occurrence, is applied is set.
This resolution is set to 16th notes, for example. Next, the timing data is read from the real-time input automatic performance data, and when this timing data deviates from the step timing of the set resolution, the timing data matches any step timing according to a predetermined rule. To fix.

[0004]

However, in the conventional quantize function, only one rule is used for correction, and the timing data is forcibly corrected to the step timing determined by this rule. It was often corrected to a step timing contrary to the intention of.

It is an object of the present invention to provide a performance data processing device capable of performing correction by reflecting one's intention by selecting one of a plurality of candidates for timing data and modifying the selected timing data. .

[0006]

According to the present invention, performance data storage means for storing automatic performance data including timing data, and timing data stored in the performance data storage means are modified to generate a plurality of types of candidate data. It is characterized by further comprising: a modifying means for creating, a selecting means for selecting one from the plurality of types of candidate data, and a rewriting means for rewriting the timing data of the automatic performance data with the selected candidate data.

[0007]

In the performance data processing device of the present invention, the timing data stored in the performance data storage means is modified to create a plurality of candidate data. The plurality of candidate data are modified by different rules. When one is selected from this candidate data, the timing data is rewritten with this data.

As a result, the performer can automatically correct the timing data to a desired position.

[0009]

1 is a block diagram of an electronic musical instrument having an automatic performance data editing function according to an embodiment of the present invention. In this electronic musical instrument, the CPU 10 controls the entire operation. C
ROM 12 and RAM 1 are connected to the PU 10 via the bus 11.
3, a detection circuit 14, a detection circuit 16, a display circuit 18, a sound source circuit 19 and a timer 20 are connected. ROM1
2 stores a program for controlling the operation of this electronic musical instrument. An automatic performance data storage area, an edit buffer, and various registers are set in the RAM 13.

The edit buffer is a storage area used when quantizing the tone generation timing of the automatic performance data, and has a structure as shown in FIG. Seven identical areas are set in the edit buffer, and a part (original) of the real-time input automatic performance data stored in the automatic performance data storage area is copied to area 0 among them. Area 1
~ Area 6 is candidate data (or candidates 1 to 1) that are quantized based on different rules from the original data.
Candidate 6) is stored.

A keyboard 15 is connected to the detection circuit 14. The keyboard 15 is a keyboard of about 5 octaves, and it is possible to directly play by operating this keyboard, and it is also possible to input the automatic performance data from the keyboard 15 in real time by switching the mode. Detection circuit 16
A panel switch 17 is connected to. The panel switch 17 includes a cursor switch 31 (see FIG. 2) for changing the display content of the display circuit 18, a +/- switch 32, and various function switches 33. The display circuit 18 includes an LCD display 30 as shown in FIG. 2, and displays the performance mode and the quantize state at that time. The tone generator circuit 19 is a circuit that forms a tone signal based on the tone generation data sent from the CPU 10. As a method of forming a tone signal, various methods such as an FM method and a waveform memory method can be adopted. The digital tone signal formed by the tone generator circuit 19 is D / A
It is input to the conversion circuit 21 and converted into an analog tone signal. The analog tone signal is input to the sound system 22, amplified, and emitted from the speaker.

Further, the timer 20 outputs an interrupt signal at the tempo designated by the CPU 10. This interrupt signal is input to the interrupt terminal of the CPU 10. This timer 20
Operates at the time of reproducing the automatic performance data or at the time of real-time input, and the CPU 10 automatically reads or writes based on the interrupt of the timer 20.

FIG. 2 is a diagram showing a partial configuration of an operation panel provided with the panel switch 17 and the display circuit 18. The operation panel has an LCD display 30, a cursor switch 31, and +/- switches 3.
2 and various function switches 33 are provided. As the function switch 33, a quantize switch (QUANTIZE switch) for entering the quantize mode,
A try switch (TRY switch) for listening to the performance data that was quantized in the quantize mode,
Candidate selection switch (NEXT switch, PREV) for selecting one from candidates 1 to 6 (see FIG. 1B)
Switch), an enter switch (ENTER switch) for replacing the original automatic performance data stored in the automatic performance data storage area with the quantized automatic performance data stored in the edit buffer, and normal play from the quantize mode. It is composed of a release switch (EXIT switch) for shifting to the mode.

In the quantize mode, the LCD display 30 displays the contents shown in FIG.
At the upper left corner of the screen, the characters “QUANTIZE” indicating the quantize mode are displayed. In the upper right corner, the section to be read into the edit buffer (reading section) is displayed. When the audition switch is turned on, the performance data in this read section is automatically played. In the illustrated case, measures 17 to 18 of the first track are read. Of the data in the read section, candidate data (see FIG. 1B) obtained by correcting the timing data of the quantizing target note (quantizing target event) is displayed as a note at the center of the screen. The inverted note 40 in this display is the note to be quantized. On the left side of the screen, the displayed candidate number and the quantization rule of the candidate are displayed. In the illustrated example, the candidate 2 is displayed, which indicates that the quantization rule is “correct to the step timing closest to the second”. In addition, the quantize resolution is displayed at the bottom of the screen. In the illustrated example, the resolution is 16th notes. The reading section and the note to be quantized are specified by the user.

FIG. 3 is a diagram showing the contents of automatic performance data stored in the edit buffer. In the figure, the horizontal axis indicates the passage of time, and the black dots drawn on the horizontal axis indicate the sounding timing of notes. "Original" data is read into area 0 from the automatic performance data storage area. Of these, the note 40 to be quantized is quantized according to various rules and written in areas 1 to 6 as candidates 1 to 6. The quantization rules (Rule 1 to Rule 6) of Candidate 1 to Candidate 6 are as follows.

Candidate 1: Correct to the closest step timing Candidate 2: Correct to the second closest step timing Candidate 3: Correct to the midpoint of the immediately preceding / immediate step timing Candidate 4: Immediately / immediately after the step timing Divide the interval into three equal parts and adjust to the closer one of them. Candidate 5: Divide the interval of the step timing immediately before and immediately after into three equal parts and adjust to the farther one of them. Candidate 6: The closest step timing Correct to the next step timing.

The above rules are arranged in order from the rule having the highest possibility of being applied, and the user inspects (listens) the candidates in order from candidate 1 to accurately quantize performance data. Can be found quickly.

4 to 8 are flowcharts showing the operation of the electronic musical instrument.

FIG. 4 is a flow chart showing the operation in the quantize mode. First, performance data to be quantized is designated (n1). The contents to be specified are the track number of the automatic performance data, the read section (listening section), and the note to be quantized. This input is performed using the cursor switch 31 and the +/- switch 32. Next, the specification of the basic resolution is accepted (n
2). The basic resolution is set by a numerical value representing the smallest note such as 16 or 32. This input operation is also performed using the cursor switch 31 and the +/- switch 32. next,
The performance data of the designated section is copied to area 0 (for original) of the edit buffer (n3). After that, the quantizing process is executed using various rules (see FIG. 3), and the created candidate data is stored in areas 1 to 6 of the edit buffer (n4). After that, the input of the various function switches 33 is accepted, and the process corresponding to the input function switch is executed (n5). First, NEXT
When the switch is turned on, the next candidate of the currently selected candidate (area) is selected (n6), and the selected candidate is read and displayed on the LCD display 30.
In this case, NEX when candidate 6 is selected
When the T switch is turned on, the candidate 1 is selected. Also P
When the REV switch is turned on, the candidate immediately preceding the currently selected candidate is selected (n8), and the process proceeds to n7 to display the data. In this case, the candidate 6 is selected when the PREV switch is turned on while the candidate 1 is being selected. When the TRY switch is turned on, the reproduction process of the candidate selected at that time is executed (n9). The reproduction process will be described in detail with reference to FIGS. When the ENTER switch is turned on, the candidate data selected at that time is copied to the read section of the automatic performance data storage area (n10). As a result, the quantized data is stored as the automatic performance data. After this, return. When the EXIT switch is turned on, the process directly returns without performing any processing.

FIG. 5 is a flowchart showing the quantizing process. This operation is n in the flowchart of FIG.
4 is executed. First, 1 is set to k indicating a candidate number (n20). Next, the data of the area 0 (original) is read out one by one and it is judged whether or not it is a note to be quantized (n22). If it is not a note to be quantized, this data is written as it is in the area k (n25). If it is a note to be quantized, the sounding timing of this data is modified based on the k-th rule (n23), and the modified data is written in area k (n24). After the operation of n24 or n25, it is determined whether or not the above processing has been completed for the read section (n2
6). If it is completed, the operation proceeds to n28 and below. If the processing has not been completed, the next data is read from area 0 (n27) and the operation returns to n22.

At n28, it is determined whether k = 6. k
In the case of = 6, it indicates that the Quantize processing is performed based on the six kinds of rules and the candidates 1 to 6 are created. Therefore, the candidate data in the area 1 is read out and displayed on the LCD display 30 (n30). It returns to the operation of 4. If k <6, 1 is added to k (n29), and n2
Return to 1. By the above operation, the quantizing process according to the rules 1 to 6 is performed on the notes to be quantized, and the candidates 1 to 6 are created.

FIG. 6 is a flowchart showing the reproducing process. This operation is executed at n9 in the flowchart of FIG. In this reproduction process, first, the process waits at n31 until the process timing comes. This processing timing is given by the interruption of the timer 20, and the processing timing is instructed for each minimum resolution of the performance according to the reproduction tempo. When the processing timing comes, the track processing (see FIG. 7) is performed on the tracks 1 to 4. This operation is repeated until the processing is completed for the read section. When the reading section is completed, the process returns with the judgment of n36. It should be noted that each of the tracks 1 to 4 stores performance data of different parts. For example, the track 1 is a track for storing a melody, and the track 2 is a track.
Is a track for storing bass sounds, track 3 is a track for storing chords, and track 4 is a track for storing rhythm sounds. In the above operation, the data (candidate data) of the target track of the quantizing process, that is, the track read in the edit buffer is read, and the data of the other tracks is read from the automatic performance data storage area.

FIG. 7 is a flowchart showing the track processing. First, timing data reading of automatic performance data (n40), timing indicated by this timing data and current timing (timing indicated by TIMEi)
It is determined whether or not it is time to output the event (sound / silence) of the track to the sound source circuit 19 (n41). TIMEi is a register that stores the current timing of the i track. If the read timing data and TIMEi match, the event data at that timing is read and output to the tone generator circuit 19 (n42). After this, TIMEi is updated (n43) and the process returns. When the event timing is represented by the timing from the beginning of each bar, the register TIMEi is cleared when the bar line is crossed, and the event timing is represented by the occurrence time interval between the events. Register TIMEi
Is cleared every time an event is read and output.

FIG. 8 is a flow chart showing the interrupt processing. When the timer 20 interrupts the CPU 10 at every predetermined timing, this operation is executed and a flag indicating that it is the processing timing of the automatic performance is set (n50). This flag is confirmed by n31 in FIG. 6 and is reset after confirmation.

In the above embodiment, a plurality of candidate data are created at one time, but the candidate data may be created by a new rule every time the next candidate is requested. Further, in this embodiment, the user sets the section to be auditioned (reading section), but a predetermined section, for example, a section for several notes before or after the note to be quantized or a section for several bars before and after is automatically set. You may make it set to the target. Further, in the above embodiment, one note is the note to be quantized,
Multiple notes may be simultaneously quantized.
In this case, each note may be quantized with different rules to create candidates for all combinations, or all quantized notes may be quantized with the same rule to create 6 types of candidates. You may Further, although the basic resolution is set by the user, the resolution may be set automatically. Further, the number and types of rules for creating candidates and the order thereof are not limited to those in the embodiment.

[0026]

As described above, according to the performance data processing apparatus of the present invention, by selecting one from a plurality of candidate data, the correction of timing data is not uniquely determined. , The timing data can be corrected to the position intended by the user. This makes it possible to rationally correct the timing of complicated timing or mixed music.

[Brief description of drawings]

FIG. 1 is a block diagram of an electronic musical instrument having an automatic performance data correction function according to an embodiment of the present invention.

FIG. 2 is a diagram showing a schematic configuration of an operation panel of the electronic musical instrument.

FIG. 3 is a diagram for explaining a quantize function of the electronic musical instrument.

FIG. 4 is a flowchart showing the operation of the electronic musical instrument.

FIG. 5 is a flowchart showing the operation of the electronic musical instrument.

FIG. 6 is a flowchart showing the operation of the electronic musical instrument.

FIG. 7 is a flowchart showing the operation of the electronic musical instrument.

FIG. 8 is a flowchart showing the operation of the electronic musical instrument.

Claims (1)

[Claims] 1. Performance data storage means for storing automatic performance data including timing data; correction means for correcting timing data stored in the performance data storage means to create a plurality of types of candidate data; An automatic performance data processing apparatus comprising: a selection means for selecting one of the candidate data of types and a rewriting means for rewriting the timing data of the automatic performance data with the selected candidate data.