JP2000352972A - Automatic playing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic playing system which is capable of strictly synchronizing the playing by an automatic playing piano and the playing by an electronic sound source with a simple constitution. SOLUTION: A sequencer calculates the time (delay time) required before strings are actually struck after hammers of the automatic playing piano are driven in accordance with the intensity of the musical tones of playing information for the automatic playing piano (S3) and calculates the time (drive time) obtained by making the respective musical tone output time of the playing information for the automatic playing piano earlier by the respective delay time (S4). When a playing start button is pressed ('YES' in S5), the point of this time is assumed to be 0:00:00:00 (S6)and the drive of the hammers based on the pitch of the musical tones and the intensity of the musical tone is commanded to the automatic playing piano at the respective drive time of the playing information for the automatic playing piano and the output of the electronic tones is commanded to the electronic sound source in accordance with the pitch of the musical tones and the intensity of the musical tone at the respective musical tone output time of the playing information for the electronic sound source.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic performance system which can synchronize the performance of an automatic performance piano with the performance of an electronic sound source.

[0002]

2. Description of the Related Art Currently, automatic performance pianos that allow the user to enjoy the sound of a live piano without performing keyboard operations have become widespread. In addition, electronic sound sources that can enjoy a wide variety of electronic sounds and electronic musical instruments with built-in electronic sound sources have become widespread. Both the sound of the live piano and the electronic sound are interesting, so you can fully enjoy the performance by the automatic performance piano and the performance by the electronic sound source alone, but you can enjoy the ensemble with the automatic performance piano and the electronic sound source. If you play them, you will get a different taste than if you played them individually.

[0003] However, an automatic performance piano is configured such that a hammer (string striking member) is mechanically driven based on a predetermined command, and a predetermined musical sound is emitted when the driven hammer strikes a string. Therefore, a short period of time (maximum about 0.5
(Seconds). On the other hand, the electronic sound source is configured to generate and emit an electronic sound based on a predetermined instruction, so that a musical sound is emitted substantially simultaneously with receiving the instruction. Therefore, if a command is issued to the automatic performance piano and the electronic sound source at the same time, the performance of the automatic performance piano will continue to be delayed for a short time from the performance of the electronic sound source. Therefore, in order to strictly synchronize the performance of the automatic performance piano with the performance of the electronic sound source, some measures are required.

Accordingly, an object of the present invention is to provide an automatic performance system capable of strictly synchronizing a performance by an automatic performance piano and a performance by an electronic sound source with a simple configuration.

[0005]

Means for Solving the Problems and Effects of the Invention In order to achieve such an object, an automatic performance system according to the present invention provides a corresponding stringing member with a corresponding strength based on an external command. An automatic performance piano for driving and striking a string, an electronic sound source for generating and generating a corresponding electronic sound based on an external command, and generating a musical tone for the automatic performance piano and the electronic sound source. And a command device for commanding, wherein the command device is configured so that a tone generation time, which is a time at which a tone is to be generated, a tone pitch, and a tone intensity are correspondingly set. Performance information storage means for storing performance information for a plurality of parts, and musical tones of the intensity are generated based on the strength of each tone constituting the performance information for an automatic performance piano stored in the performance information storage means. When said automatic A delay time calculating means for calculating a delay time required from when the playing piano drives the string striking member to when the string striking member actually hits the string, and based on each delay time calculated by the delay time calculating means, A drive time setting means for storing in the performance information storage means a drive time earlier by each delay time than each tone generation time corresponding to the strength of each tone, in correspondence with the strength of each tone; For the performance piano, at each drive time constituting the performance information for the automatic performance piano stored in the performance information storage means, based on the pitch and intensity of the musical tone corresponding to each drive time. Commanding the generation of musical tones, and for the electronic sound source, at each musical sound generation time constituting the electronic sound source performance information stored in the performance information storage means,
Command means for commanding the generation of a musical tone based on the pitch of the musical tone corresponding to each musical tone generation time and the intensity of the musical tone,
The automatic performance piano drives a corresponding stringing member with a corresponding strength based on a command from the command unit, and the electronic sound source generates a corresponding electronic sound based on a command from the command unit. It is generated and generated.

According to the automatic performance system according to the present invention, when performing an automatic performance, first, the delay time calculating means constituting the commanding device includes an automatic performance piano included in the performance information stored in the performance information storage means. Based on the strength of each tone constituting the performance information, a delay time required from when the automatic performance piano drives the stringing member to when the stringing member actually strikes the string is calculated. Specifically, in the case of a very weak tone, the delay time is about 500 milliseconds, and the delay time becomes shorter as the tone becomes stronger. The performance information may be configured to be supplied to the performance information storage means from an external storage medium such as a CD-ROM, or may be stored in the performance information storage means at a manufacturing stage.

When the delay time is calculated, the drive time setting means associates the drive time obtained by advancing each tone generation time corresponding to the intensity of each tone by each delay time with the intensity of each tone. It is stored in the performance information storage means. That is, the drive time is added to the tone generation time, tone pitch, and tone intensity constituting the performance information for the automatic performance piano.

[0008] Then, the command means, for the automatic performance piano, at each drive time added to the performance information for the automatic performance piano, based on the pitch and intensity of the musical tone corresponding to each drive time. Instructs the generation of musical tones and, for the electronic sound source, generates musical sounds at each musical sound generating time constituting the performance information for the electronic sound source based on the pitch and intensity of the musical sound corresponding to each musical sound generating time Command.

Then, the automatic performance piano drives the corresponding stringing member with the corresponding strength based on the command from the command means, and the electronic sound source operates based on the command from the command means.
Generates and generates the corresponding electronic sound. The automatic performance piano is instructed to generate a musical tone at a drive time earlier than the musical tone generation time by a delay time, so if the automatic performance piano is driven at a corresponding strength by driving the corresponding stringing member based on this command, The string striking member strikes the string at a time later than the drive time by the delay time, that is, at the musical sound generation time.

According to the automatic performance system of the present invention, since the delay time and the drive time are calculated later in the command device based on the performance information, the performance supplied from the external storage medium to the performance information storage means is provided. The information or the performance information stored in advance in the performance information storage means may be general-purpose information that does not include the delay time or the drive time. In addition, the automatic performance piano does not perform any temporal control, and simply drives the corresponding stringing member with the corresponding strength each time a command is received from the command means. The effect of not complicating the configuration is also obtained.

Therefore, according to the automatic performance system of the present invention, the performance by the automatic performance piano and the performance by the electronic sound source can be strictly synchronized with a simple configuration. In the automatic performance system according to the present invention, which of the performance information for a plurality of parts stored in the performance information storage means is used as the performance information for the automatic performance piano. It is more preferable to include performance information selection means for selecting which of the performance information for the electronic sound source is to be selected based on an external operation.

In such a configuration, the performance information selection means automatically selects any of the performance information stored in the performance information storage means based on a user's external operation (button operation or the like). As the performance information for the performance piano, which of the performance information for the electronic sound source is selected. That is, the user can freely select whether to accompany the automatic performance piano or to play the main melody. Even if the songs are the same, the impression given to the listener is completely different between the case where the automatic performance piano plays the main melody and the case where the automatic performance piano accompanies, so that the user can enjoy various tunes.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. First, the configuration of the automatic performance system of the present embodiment will be described. FIG. 1 is a block diagram for explaining the configuration of the automatic performance system of the present embodiment.

The automatic performance system according to the present embodiment includes a sequencer 1, an automatic performance piano 2, and a speaker 3. The sequencer 1 includes a microcomputer 11, a flexible disk drive (hereinafter, referred to as "FDD") 12, a song selection button 13a, a piano part setting button 13b, a performance start button 13c, and a liquid crystal display (hereinafter, referred to as "LCD"). .) 14, the electronic sound source 15, and the Musi
cal-Instrument-Degital-Interface (hereinafter “MIDI”)
That. ) 16.

The microcomputer 11 includes a CPU 11a for executing various arithmetic controls, a ROM 11b for recording the procedure of the arithmetic control executed by the CPU 11a, and a CPU 1a.
And a RAM 11c for temporarily recording the result of the operation 1a. The RAM 11c is connected to the FDD 12, the music selection button 13a, the piano part setting button 13b, the performance start button 13c, the LCD 14, the electronic sound source 15, and the MIDI 16. Also connected to the automatic performance piano 2.

The FDD 12 is for reading performance information used in the automatic performance system of the present embodiment from a flexible disk. The music selection button 13a is used to select which music performance information is to be read from the flexible disk.

The piano part setting button 13b is used to set which of the performance information for a plurality of parts is to be the performance information for the automatic performance piano (which part is to be the part of the automatic performance piano). It is. Performance start button 13c
Is for starting automatic performance.

The LCD 14 is for displaying the contents of the performance information (music title, tempo, etc.), which part is set as the part of the automatic performance piano, and the like. The electronic sound source 15 generates an electronic sound in accordance with a command from the microcomputer 11 and outputs the generated electronic sound from the speaker 3.

The automatic performance piano 2 has an excitation control circuit 21
, A keyboard drive solenoid 22 and a MIDI 23. The excitation control circuit 21 is connected to the keyboard drive solenoid 22 and to the sequencer 1 via the MIDI 23, and in accordance with the command of the sequencer 1 (microcomputer 11), the excitation control circuit 21 is connected to the keyboard drive solenoid 22 corresponding to the command content. On the other hand, a current having a magnitude corresponding to the contents of the command is supplied to control the excitation / non-excitation and excitation strength of the keyboard driving solenoid 22.

The keyboard drive solenoid 22 is provided corresponding to each keyboard (not shown) constituting the automatic performance piano 2. When the keyboard drive solenoid 22 is excited, the corresponding keyboard is driven. , Whereby a corresponding hammer (not shown) strikes a string (not shown).

Next, the operation of the automatic performance system of this embodiment will be described with reference to the flowchart. FIG. 2 is a flowchart for explaining the flow of processing performed by the microcomputer 11 (CPU 11a).

This processing is started when operating power is supplied to each unit of the sequencer 1 from a power supply device (not shown), and the CPU 11a reads and executes the processing procedure recorded in the ROM 11b. When this process is started, the CPU 11a reads out the performance information for one song from the flexible disk via the FDD 12 according to the operation mode of the song selection button 13a, and
Write to M11c (S1). At this time, the LCD 1
4, a list of song names written on the flexible disk is displayed.
When the performance information is read out by operating 3a, the selected song name is displayed.

Here, the performance information read from the flexible disk will be described. FIG. 3 is an explanatory diagram for describing an example of performance information. The performance information includes, for each musical tone, a data number, a part number, a musical tone pitch,
It is composed of the intensity of the musical sound and the musical sound generation time.

The data number is the one assigned to each piece of performance information.
Is a serial number starting with FIG. 3 describes the performance information from the 9053rd to the 9062th. The part number is a number for identifying whether it is performance information for an automatic performance piano or performance information for an electronic sound source. In the present embodiment, it is represented by 1 or 2, and which is to be used as the part number of the performance information for the automatic performance piano is set according to the operation mode of the piano part setting button 13b.

The pitch of the tone is set to 1 as the reference tone.
The numerical value is set so that the value is increased by one each time the octave is increased by one twelfth (semitone). The intensity of the musical tone is obtained by setting the intensity of the weakest tone that can be output to 1 and numerically increasing the intensity as the intensity increases.

The tone generation time is a relative time in units of 1/100 second, with the time at which the performance starts to be "0: 00: 00: 00". Although the actual performance information includes the duration of the musical sound in addition to the above, the description thereof is omitted in this embodiment.

The performance information for one music is read from the flexible disk and written in the RAM 11c.
U11a sets whether the part number of the automatic performance piano performance information is 1 or 2 according to the operation mode of the piano part setting button 13b (S2). In the present embodiment, the part number of the performance information for the automatic performance piano is set to 1 hereinafter.
The description will be made assuming that the setting is made.

When the part number of the performance information for the automatic performance piano is set, the CPU 11a sets the excitation control circuit 21 of the automatic performance piano 2 to the keyboard drive solenoid 22 based on the intensity of the tone of the performance information for the automatic performance piano. , The hammer is driven by this, and the time (delay time) required for the hammer to actually hit a string is calculated (S3). In this embodiment, the delay time when the musical tone intensity is "1" is set to 500 milliseconds, and the delay time is shortened by 20 milliseconds each time the musical tone intensity increases by one.

When the delay time is calculated based on the strength of each tone in the performance information for the automatic performance piano, the CPU 11
a calculates a time (drive time) obtained by advancing each musical sound generation time in the performance information for an automatic performance piano by each delay time (S)
4). That is, as shown in FIG. 3, the delay time and the drive time are added to the performance information for the automatic performance piano among the performance information written in the RAM 11c.

Next, the CPU 11a operates the performance start button 13c.
It is determined whether or not is pressed (S5). And
If the performance start button 13c has not been pressed ("NO" in S5), the process returns to S1, and if another music is selected by operating the music selection button 13a, one of the corresponding music is selected.
The performance information of the music is read and written to the RAM 11c,
When the piano part setting button 13b is operated and the part number of the performance information for the automatic performance piano is changed, the corresponding part number is set as the part number of the performance information for the automatic performance piano, and the delay time and the drive time are calculated. Will be.

On the other hand, when the performance start button 13c is pressed ("YES" in S5), this time is set to time 0: 00: 00: 00 (S6). And CPU
Reference numeral 11a denotes a drive of the hammer, that is, a keyboard drive solenoid, for the excitation control circuit 21 of the automatic performance piano 2 at each drive time of the performance information for the automatic performance piano, based on the pitch and intensity of the musical sound. 22 is instructed to the electronic sound source 15 at each musical tone generation time of the performance information for the electronic sound source (the performance information whose part number is “2”).
An electronic sound output command is issued based on the pitch of the musical sound and the strength of the musical sound (S7).

Then, the excitation control circuit 21 of the automatic performance piano 2 excites the keyboard driving solenoid 22 corresponding to the command from the CPU 11a with a current of a corresponding magnitude, whereby the corresponding hammer is driven with the corresponding strength. The string is struck by the hammer at the musical sound generation time later than the drive time by the delay time.

Next, the processing in S7 and the musical tones output as a result will be specifically described with reference to the performance information shown in FIG. First, at time “0: 12: 33: 58”, the keyboard driving solenoids 22 of the keyboards corresponding to the musical tone pitches “40” and “43” both have the size corresponding to the musical tone intensity “5”. Excited by current. Then, at time “0:12:
At 34:00, the string was actually struck and the height was “4”.
Musical tone of "0", strength "5" and height "43", strength "5"
Is output from the automatic performance piano 2 (data numbers "9053" and "9054"). At time “0: 12: 34: 00”, the electronic sound source 15
(Speaker 3) also outputs an electronic sound having a height of "74" and a strength of "3" (data number "9055"). That is,
At time “0: 12: 34: 00”, from the automatic performance piano 2, a musical tone having a height “40” and a strength “5” and a chord of a live piano having a height “43” and a strength “5” are generated. , Electronic sound source 1
5 (speaker 3) simultaneously outputs an electronic sound having a height of “74” and a strength of “3”.

Similarly, at time "0: 12: 33: 77", a command is issued to the automatic performance piano 2 and time "0: 1" is output.
At 2:34:25, a raw piano sound having a pitch of “47” and a strength of “2” is actually output (data number “905”).
6)), at the same time “0: 12: 34: 25”, an electronic sound of height “72” and intensity “3” is output from the electronic sound source 15 (speaker 3) (data number “905”).
7 "). That is, at the time “0: 12: 34: 25”, the height “47” and the strength “2” from the automatic performance piano 2
Is output from the electronic sound source 15 (speaker 3) at the same time as the electronic sound having the height “72” and the intensity “3”.

Similarly, after the data number "9058", a command is issued to the automatic performance piano 2 at the drive time of the performance information for the automatic performance piano, and the electronic sound source 15 at the musical sound generation time of the performance information for the electronic sound source. , A tone (a live piano tone and an electronic tone) is output from the automatic performance piano 2 and the electronic tone generator 15 (speaker 3) at the tone generation time.

In this embodiment, the sequencer 1 corresponds to the above-mentioned instruction device, the RAM 11c corresponds to the above-mentioned performance information storage means, and the processing of S2 performed by the CPU 11a corresponds to the operation of the above-mentioned performance information selection means. The processing of S3 corresponds to the operation of the above-described delay time calculating means, the processing of S4 corresponds to the operation of the above-described drive time setting means, and the processing of S7 corresponds to the operation of the above-described command means.

Next, the effects of the automatic performance system of this embodiment will be described. According to the automatic performance system of the present embodiment, the microcomputer 11 of the sequencer 1 calculates the delay time for the performance information for the automatic performance piano based on the intensity of the musical tones constituting each performance information. Is calculated from the musical sound generation time and the calculated delay time. Then, at the drive time, the automatic performance piano 2 is instructed to drive the hammer, that is, to excite the keyboard drive solenoid 22, and the electronic sound source 15 generates and outputs the electronic sound at the musical sound generation time. Since the instruction is issued, a musical tone is output from the automatic performance piano 2 and the electronic sound source 15 (speaker 3) at the musical tone generation time. Therefore, the performance by the automatic performance piano 2 and the electronic sound source 1
5 can be strictly synchronized.

According to the automatic performance system of this embodiment, the drive time is calculated later by the microcomputer 11 of the sequencer 1. Therefore, the performance information read from the flexible disk into the RAM 11c includes the delay time and the drive time. A general-purpose device that does not include Therefore, it is very versatile. Therefore, according to the automatic performance system of the present invention, the performance by the automatic performance piano and the performance by the electronic sound source can be strictly synchronized without using special performance information in consideration of the delay time.

In addition, according to the automatic performance system of this embodiment, each time the automatic performance piano 2 receives a command from the sequencer 1, the excitation control circuit 21 corresponds to the keyboard drive solenoid 22 corresponding to the content of the command. It suffices to just supply a large current and excite it. That is, the automatic performance piano 2
Does not require any temporal management. Therefore, an effect is obtained that the configuration of the automatic performance piano 2 is not complicated.

According to the automatic performance system of the present embodiment, the user operates the piano part selection button 13b to determine which of the performance information stored in the RAM 11c and the automatic performance piano performance information. You can choose to do it. That is, the user can freely select whether to accompany the automatic performance piano 2 or to play the main melody. Even if the songs are the same, the impression given to the listener is completely different between the case where the automatic performance piano 2 plays the main melody and the case where the automatic performance piano 2 accompanies, so that the user can enjoy various tunes. it can.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and it is needless to say that the present invention may be implemented in various modes. For example, in the embodiment, the delay time is configured to change in accordance with the intensity of the musical sound, but may be uniformly set to 0.5 seconds regardless of the intensity of the musical sound.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an automatic performance system according to an embodiment.

FIG. 2 is a flowchart illustrating a flow of a process performed by a microcomputer (CPU).

FIG. 3 is an explanatory diagram illustrating an example of performance information.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Sequencer 2 ... Automatic performance piano 3 ... Speaker 11 ... Microcomputer 12 ... FDD
13a ... music selection button 13b ... piano part setting button
13c performance start button 14 LCD 15 electronic sound source 16 MIDI 21 excitation control circuit 2
2 ... keyboard drive solenoid 23 ... MIDI.

Claims (2)

[Claims] 1. An automatic performance piano for driving a corresponding stringing member at a corresponding strength to strike a string based on an external command, and generating a corresponding electronic sound based on the external command. An automatic performance system comprising: an electronic tone generator that generates a musical tone; and a command device that instructs the automatic performance piano and the electronic tone source to generate a musical tone. Musical performance information storing means for storing a plurality of parts of musical performance information corresponding to the musical tone generation time, musical tone pitch, and musical tone intensity; and an automatic performance piano stored in the musical performance information storage means. Based on the intensity of each tone constituting the performance information, it is necessary for the automatic performance piano to drive the string-striking member and to actually strike the string when the tone is generated. Delay to calculate delay time Delay time calculating means, and, based on each delay time calculated by the delay time calculating means, a driving time earlier by each delay time than each tone generation time corresponding to the intensity of each tone, Driving time setting means for storing in the performance information storage means in correspondence with the strength of the automatic performance piano; and for the automatic performance piano, each drive constituting the performance information for automatic performance piano stored in the performance information storage means. At the time, the generation of a musical tone is instructed based on the pitch of the musical tone and the intensity of the musical tone corresponding to each of the driving times. Command means for instructing the generation of a musical tone based on the pitch of the musical tone corresponding to each musical tone generating time and the intensity of the musical tone at each musical tone generating time constituting the performance information; Based on a command from the command means, a corresponding string driving member is driven with a corresponding strength, and the electronic sound source is based on a command from the command means.
An automatic performance system characterized by generating and generating a corresponding electronic sound. 2. The performance information for a plurality of parts stored in the performance information storage means, which is used as the performance information for the automatic performance piano and which is used as the performance information for the electronic sound source.
2. The automatic performance system according to claim 1, further comprising performance information selection means for selecting based on an external operation.