JPH0850483A - Playing information controller - Google Patents

Abstract

PURPOSE:To make it possible to continue automatic playing by a changed timbre in case the timbre, etc., are changed from a panel by recording the kind of the playing information generated in correspondence to operation contents and outputting only the playing information different from this kind. CONSTITUTION:A RAM 3 is used as a buffer for storing a work area and the playing information. This playing information is arranged with playing information units in order of playing. The set of MIDI information of variable lengths and interval data which is playing timing information is made the unit of the playing information. Waveform data and envelope parameters are selected and set in accordance with the changed timbre numbers and the change items are recorded from the panel 4 in the RAM 3 when a user operates the panel 4 during automatic playing and, for example, the timbres are changed. The processing (setting) of the playing information is cancelled when the playing information of the same kind is included in the information to be automatically played thereafter. Then, the automatic playing is continued to the last by the user's desired setting.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a performance information control device, and more particularly to a performance information control device capable of continuing an automatic performance according to a tone color or the like when the tone color or the like is changed from a panel during automatic performance. Is.

[0002]

2. Description of the Related Art In a conventional electronic musical instrument having an automatic performance function, an automatic performance signal is generated using a MIDI file that stores a set of MIDI data and performance timing data (interval data) as performance information in the order of performance. It was By changing the tone color and effect settings from the panel during the automatic performance, it is possible to change the tone color and effect of the automatically played musical tone.

[0003]

In the electronic musical instrument having the conventional automatic performance function as described above, when the tone color is changed from the panel during the automatic performance, the tone color specified by the panel is changed immediately after the change. However, if the tone color setting command (MIDI program change message) is included in the data of the subsequent automatic performance, the tone color is changed again when the performance information is read and processed. Therefore, there is a problem in that the tone color is arbitrarily changed by the information of the automatic performance when it is desired to play the entire song with various tone colors, which is inconvenient.

An object of the present invention is to improve the problems of the prior art as described above, and when the tone color or the like is changed from the panel during the automatic performance, it is possible to continue the automatic performance by the tone color or the like. It is to provide an information control device.

[0005]

According to the present invention, in a performance information control device for processing performance information, a means for detecting an operation, a generating means for generating performance information corresponding to the content of the operation, and an output from the generating means. Recording means for recording the type of performance information to be recorded, comparison means for comparing the type of performance information with the type recorded in the recording means, and selection means for outputting only the performance information whose judgment result of the comparison means does not match. It is characterized by having.

[0006]

According to the present invention, when the user makes a change from the operation panel or the like during the automatic performance by the above means,
The changed type of performance information is recorded, and if the performance information of the same type is included in the information automatically played thereafter, the processing (setting) of the performance information is canceled. Therefore, the automatic performance is continued to the end according to the setting desired by the user.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 2 is a block diagram showing the configuration of an electronic musical instrument to which the present invention is applied. The CPU 1 is a central processing unit that controls the entire electronic musical instrument based on a control program stored in the ROM 2. The CPU 1 has a built-in timer circuit that issues a timer interrupt to the CPU 1 at a set predetermined cycle. The RAM 3 is used as a work area and a buffer for storing performance information. In addition, it is configured to be backed up by a battery so that the set information can be retained even when the main power is turned off.
The panel 4 has various switches such as timbre and effect selection switches, and a display device for displaying characters and figures by liquid crystal, LEDs and the like.

The keyboard 5 comprises, for example, a keyboard composed of a plurality of keys each having two switches, and a circuit for scanning the state of each switch. The MIDI interface circuit 6 performs transmission / reception processing of MIDI signals, and the FDD (floppy disk drive) interface circuit 7 includes a floppy disk drive device.
Reads and writes performance information from the floppy disk.
The tone generator circuit 8 includes, for example, a plurality of tone generation channels that generate tone signals by reading tone waveforms from the waveform memory at address intervals proportional to the pitch. In practice, one circuit is time-division multiplexed. It is realized by this. The D / A converter 9 converts the digital tone signal to D / A.
After conversion, the amplifier 10 amplifies the musical tone signal to drive the speaker 11. The bus 12 connects each circuit in the electronic musical instrument. In addition to this, a memory card interface circuit or the like may be provided if necessary.

FIG. 3 is an explanatory diagram showing an example of the format of the stored performance information. The performance information is composed of performance information units arranged in the order of performance, and the performance information unit is data in which variable-length MIDI information and interval data which is performance timing information are set. FIG.
In the figure, three performance information units representing key-off, program change, and key-on in the performance information are shown. Further, as the timing information, interval data indicating a time difference from the immediately preceding MIDI information is added. The program change message is a command for designating the tone color number, and the upper 4 bits of the head status byte are "1100", that is, "C" in hexadecimal.
The lower 4 bits represent the MIDI channel. The following data bytes represent tone color numbers 0 to 127. When the performance information includes the program change message, the tone color of the designated MIDI channel is changed to the tone color designated by the tone color number.

FIG. 1 is a time chart showing the operation of the present invention when a tone color changing operation is performed from the panel during automatic performance. When the automatic performance is started by the user's operation at time t0, the tone color setting command (program change message) in the automatic performance data is read out at time t1 and the tone color is set to A. Time t2
In, when the user performs an operation of changing the tone color to B from the panel, the tone color is changed to B. Then, the fact that the tone color has been changed from the panel is recorded in a predetermined area of the memory. At time t3, the tone color is changed to C from the automatic performance data.
Although the command for setting the tone color is read out, this tone color setting command is ignored because the tone color changed from the panel is recorded in the memory, and the automatic tone performance is continued with the tone color being B.

FIG. 4 is a flow chart showing the processing during automatic performance to which the present invention is applied. In step S1, for example, it is determined whether or not the music selection switch on the panel is operated, and if it is operated, the process proceeds to step S2, and in accordance with the operation, the music number, music name, etc. are changed and displayed Selection processing is performed. In step S3, it is determined whether or not an automatic performance start operation has been performed. If the result is negative, the process returns to step S1, but if the result is affirmative, the process proceeds to step S4 to start the automatic performance process. It First, in step S4, it is determined whether or not there is a panel operation. If the result is affirmative, step S4
Go to 5.

In step S5, a corresponding process is performed based on the panel operation. For example, in the case of tone color change processing, the current value of the tone color number is changed, and in subsequent tone generation processing, the waveform data and envelope parameters in the waveform memory are selected and set based on the changed tone color number. In step S6, the change item from the panel is recorded in a predetermined area in the RAM 3. For example, in the case of a tone color, a code representing the tone color is recorded, and the code can be arbitrarily determined. For example, the corresponding M
If the code of the IDI message is recorded, the comparison process in step S8 described later becomes simple. MIDI messages corresponding to parameters that can be changed from the panel include program change messages that specify tone colors, control change messages that specify operator information such as various effects and volume, and pitch wheel change messages that shift pitches. There is.

In step S7, the performance data to be automatically played specified in step S2 is read. The performance data is stored in, for example, a floppy disk. First, a predetermined amount of performance data is read into a buffer in the memory, and the performance data as shown in FIG. 3 is read out one set (one row) from this buffer. When the remaining data in the buffer falls below a predetermined amount, the next performance data is read from the floppy disk.

At step S8, whether the read performance data can be changed from the panel and which corresponds to (matches) with any of the change items recorded in a predetermined area in the RAM 3 at step S6. It is determined whether or not. When the determination result is affirmative, the sounding process of step S9 is bypassed, and the process ends without changing anything. If the performance information has not been changed, then in step S9, the same sound generation timing processing and sound generation processing as in the normal automatic performance are performed. Step S1
At 0, it is determined whether or not the performance information is lost or the end operation is performed. If the result is negative, the process returns to step S4 to continue the automatic performance process, but if the result is affirmative, the automatic performance process is performed. To finish.

Although the embodiment has been described above, the following modifications are also possible. Although an electronic musical instrument having an automatic performance function is disclosed in the embodiment, for example, the present invention is inserted between an automatic performance device that outputs a MIDI signal and a sound source device that inputs a MIDI signal and generates a musical sound (signal). It may be a device that only processes the performance information by the. That is, the performance information may be generated internally or input from the outside, or the performance information may be output to the outside by, for example, a MIDI signal, and a tone generator circuit is built in to control the generation of musical sounds internally. It may be performed. The change information from the panel may be recorded, and whether or not the subsequent change due to the performance data should be ignored may be set in advance from the panel. Further, the performance data itself may be rewritten and updated based on the change information.

[0016]

As described above, according to the performance information control device of the present invention, when the user makes a change from the operation panel or the like during automatic performance, the type of the changed performance information is recorded. If the automatically played information later contains the same type of performance information, the processing (setting) of the performance information is canceled. Therefore, it is not necessary to edit the performance information, and it is not necessary to frequently change the setting from the panel, and the automatic performance is continued to the end according to the setting desired by the user, and the operability is improved.

[Brief description of drawings]

FIG. 1 is a time chart showing the operation of the present invention.

FIG. 2 is a block diagram showing a configuration of an electronic musical instrument to which the present invention is applied.

FIG. 3 is an explanatory diagram showing an example of a format of performance information.

FIG. 4 is a flowchart showing a process during automatic performance to which the present invention is applied.

[Explanation of symbols]

1 ... CPU, 2 ... ROM, 3 ... RAM, 4 ... Panel, 5
… Keyboard, 6… MIDI interface, 7… F
DD interface, 8 ... Sound source circuit, 9 ... D / A converter, 10 ... Amplifier, 11 ... Speaker, 12 ... Bus

Claims (2)

[Claims] 1. In a performance information control device for processing performance information, means for detecting an operation, generation means for generating performance information corresponding to the contents of the operation, and type of performance information output from the generation means are recorded. The recording means, the type of the performance information to be processed, the comparing means for comparing the types recorded in the recording means, and the selecting means for outputting only the performance information in which the determination result of the comparing means does not match are provided. Characteristic performance information control device. 2. A performance information generating means for generating performance information in real time based on the stored performance information, and a tone signal generating means for generating a tone signal based on the performance information output from the selecting means. The performance information control device according to claim 1, wherein the type of the performance information includes at least one of a tone color, a sound volume, an effect, and an operator.