JP3407625B2 - Automatic performance apparatus, automatic performance method, and medium recording program - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to automatic performance,
Particularly, the present invention relates to an automatic performance in which the tone color and the like can be automatically set when performing the automatic performance.

[0002]

2. Description of the Related Art Song data for automatic performance is recorded on a floppy disk or the like in a file format called a standard MIDI file, for example. The automatic performance device performs an automatic performance by reproducing song data recorded on a floppy disk or the like.

In the case of a standard MIDI file, song data is expressed using the MIDI data format. The MIDI data has setting data for setting tone colors, effects, etc. in addition to note on / off.

Initial setting data is often placed at the beginning of song data. The initial setting data is setting data set in advance for playing the song, and is, for example, a tone color, an effect, a tempo, or the like.

The song data is roughly divided into the above-mentioned initial setting data and the following actual performance data.
The automatic performance device first reads the initial setting data and initializes the tone color and the like, and then reads the actual performance data and performs automatic performance including sounding and muting.

The initial setting data includes M, in addition to tone color and effect.
It includes a system exclusive message defined as IDI data. The content of the system exclusive message can be freely determined according to the manufacturer or the model of the device, and the upper limit of the data length is not particularly limited.

The amount of initial setting data differs depending on the song data. In particular, song data including system exclusive messages tends to have a large amount of initial setting data.

If the amount of initial setting data is large, the time required for initial setting will be long and the time for starting the actual performance will be delayed. On the other hand, if the amount of initial setting data is small,
The initial setting time is short and the actual performance starts early. That is, the time from when the reproduction switch of the automatic performance device is pressed until the actual performance is performed varies depending on the amount of initial setting data.

The amount of initial setting data differs depending on the song data. It is inconvenient if the start timing of the actual performance changes depending on the type of song data.

To solve the inconvenience, a dummy bar of, for example, one bar may be provided at the beginning of the song data. Initial setting data is recorded in this first measure (dummy measure), and actual performance data is recorded after the second measure.
If the above-mentioned dummy measures are provided for all song data, the actual performance can always be started from the second measure regardless of the song data.

[0011]

However, in most cases, the above-mentioned method is performed by an expert in manual operation. For example, when recording song data, in order to create a dummy measure, the recording start switch is pressed, and after waiting for one measure (dummy measure), the performance for recording is started. It is extremely difficult for a beginner to create a dummy measure because the meaning of providing a dummy measure is unknown.

After recording the song data including the dummy measure, the song data can be reproduced by the automatic performance device. When the user presses the play switch, the automatic performance device performs the initial setting at the first measure and starts the actual performance at the second measure.

In this case, the actual performance does not start immediately after the user presses the reproduction switch, but the actual performance starts after the silent state continues for one bar time. A user who doesn't know about the dummy bar pressed the play switch,
I sometimes make a complaint as to why the sound doesn't come out right away.

The silent time mentioned above corresponds to the time of the dummy measure. The length of the dummy measure is not specified in particular, and can be arbitrarily determined by the person who records it. If the length of the dummy bar differs depending on the song data, the user
I don't know how many bars to wait after pressing the play switch.

An object of the present invention is to provide an automatic performance device, an automatic performance method, or a computer program recording medium capable of uniformly and automatically recording initial setting data at the beginning of song data.

Another object of the present invention is to provide an automatic performance device, an automatic performance method, or a recording medium of a computer program capable of making the timing of starting a real performance almost constant regardless of the amount of initial setting data. That is.

[0017]

According to one aspect of the present invention, an automatic performance device is provided with a start instruction means for instructing the start of recording by an operator's operation, and the start instruction means for instructing the start. Before, the dummy bar generation means for generating a dummy bar of a predetermined period length located at the beginning of the song data, and an initial setting data recording means for recording the initial setting data scattered in the dummy bar temporally. After recording the initial setting data by the initial setting data recording means, a writing preparation means for setting a recording start position of the performance data after the dummy measure, and a performance from the recording start position in response to a start instruction by the start instruction means Performance data recording means for recording data.

Before the start of recording is instructed by the operator's operation, the initial setting data is automatically recorded in the dummy bar in advance. When the recording start is instructed by the operator's operation, the performance data is recorded after the dummy bar, so that the operator can start the recording performance together with the recording start instruction.

[0019]

[0020]

[0021]

[0022]

According to another aspect of the present invention, in the automatic performance device, the start instruction means for instructing the start of the reproduction by the operator's operation, and the song data must have a dummy bar of a specific period length. Determination means for determining whether the recording is performed in a first format to which information indicating that the dummy bar is included is added or a second format to which the information is not added, When the start instructing means gives an instruction to start, when the song data is in the first format, the reading of the song data is started after the dummy bar having the specific period length, and the song data is read in the second format. In the case of the format, it has a reading means for starting reading from the beginning of the song data regardless of the presence or absence of dummy measures.

When the song data is in the second format, it is known that the substantial performance data starts from a predetermined location, so the reading is started from the middle of the song data. When the song data is in the first format, since it is not known where the actual performance data starts, the reading is started from the beginning of the song data.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION FIG. 1A shows a management file. The management file 1 is stored in a floppy disk, a RAM, or the like.

The management file 1 includes management data for n pieces of song 1 to song n. That is, it means that there are n song files 2 (FIG. 1B). The management data of each song includes a song number, song file name, song file storage address, and data type.

The song number is a number for identifying a song file (or song data). The song file name is the file name of song file 2. The song file storage address is an address on the floppy disk, RAM or the like where the song file (or song data) is stored. The data type indicates whether it is a user song or another song. The user song is
This indicates that the song file is recorded by the automatic performance device of this embodiment, and that other songs are song files recorded by another automatic performance device or the like.

FIG. 1B shows a song file. The song file 2 is stored in a floppy disk, RAM or the like.

In the song file 2, one song file 2 corresponds to one song, for example, standard MIDI
The file complies with the file standard. The song file 2 need not be a standard MIDI file, but is preferably a standard MIDI file in consideration of compatibility with other automatic performance devices. Less than,
A case where the song file 2 is a standard MIDI file will be described as an example.

The song file 2 has a header chunk 3 and a track chunk 4. The number of track chunks 4 varies depending on the type of file and may be 1 or 2 or more. Header chunk 3 is standard M
IDI file type (format 0, 1 or 2),
Alternatively, information such as time resolution (for example, quarter note divided into 96) is included.

The track chunk 4 has the initial setting data 5
And the actual performance data 6 following it. The initial setting data 5 is setting data set in advance when playing based on the actual performance data 6, and is, for example, a tone color, an effect, a volume, a time signature, a tempo, or the like. The actual performance data 6 is song data other than the initial setting data 5. For example, it is data after note-on that appears at the beginning of a song. In addition to note on / off, the actual performance data 6 is a setting data (tone color) stored at a position to be changed when changing various setting data set by the above-described initial setting data 51 in the actual performance data. , Effects, volume, tempo, etc.).

The initial setting data 5 is set in the dummy bar. The dummy measure is, for example, four beats from the first beat to the fourth beat. The actual performance data 6 is recorded after the dummy measure. For example, the actual performance data 6 is recorded after the fifth beat.

FIG. 1C shows the format of a track chunk. Track chunk 4, as described above,
It consists of initial setting data 5 and actual performance data 6. The initial setting data 5 and the actual performance data 6 are both represented by a set of data including the interval data 7 and the event 8 as one set. This format is defined by the standard MIDI file.

The interval data 7 is the actual performance data 6
In the above, the time information indicates the timing of the event 8, but the initial setting data 5 has no time meaning. Since the initial setting data 5 creates a dummy bar of 4 beats, the interval data 7 included in itself is only set to 4 beats. Each interval 7 of the initial setting data 5 does not mean time information corresponding to the event 8.

FIG. 2 shows the timing of the initial setting data and the actual performance data. The horizontal axis indicates the time axis, and one scale indicates one beat. The initial setting data 5 is recorded within the time T1 from the first beat to the fourth beat. The actual performance data 6 is the fifth
It is recorded within the time T2 after the beat.

As shown in the figure, the initial setting data 5 may be set so as to be evenly distributed over time T1 or may be set unevenly. For example, all may be set at the same timing of the first beat. In a note-on event or the like, the value of the interval data 7 is important because the corresponding interval data 7 (FIG. 1 (C)) determines the sound generation timing and the like. However, if the initial setting data 5 is recorded within the time T1 (dummy measure), the same performance is performed regardless of the beats. That is, in the initial setting data 5, the interval data 7 does not have a time meaning, and the interval data 7 need only be 4 beats in total.

The actual performance data 6 does not necessarily need to have a note-on event at the beginning of the fifth beat. Depending on the song, the fifth beat may be a rest. In that case, the first note-on event exists at the sixth beat.

According to the present automatic performance device, a dummy measure of 4 beats is automatically recorded by the method described later. Even if the user does not have knowledge about the dummy measure, a 4-beat dummy measure is automatically set. The song file created by the present automatic performance device is hereinafter referred to as a user song.

On the other hand, some song files created by means other than the present automatic performance device include a dummy measure having a beat number other than 4 beats and a song file having no dummy measure. These song data are hereinafter referred to as other songs.

In the management file shown in FIG. 1A, it is identified whether the data type is a user song or another song.

FIG. 3 shows a hardware configuration of an electronic musical instrument including an automatic musical instrument according to an embodiment of the present invention.

The keyboard detection circuit 28 detects a key operation on the keyboard 27 and generates a note-on or note-off signal or the like. The switch detection circuit 30 detects a switch operation on the switch 29 and generates a switch signal.

On the bus 35, in addition to the keyboard detection circuit 28 and the switch detection circuit 30, a display circuit 31 and a tone generator circuit 3 are provided.
2, effect circuit 33, RAM21, ROM22, CPU2
3, the external storage device 25, and the interface 26 are connected.

The RAM 21 has a working area for the CPU 23 which stores flags, buffers and the like. It may also store a computer program supplied from the outside. The ROM 22 stores various parameters and computer programs. CPU23 is RO
According to the computer program stored in M22 or RAM21, calculation or control is performed.

The timer 24 is connected to the CPU 23.
The CPU 23 can obtain time information from the timer 24. Interface 26 is a MIDI interface or other interface for communication networks.

The external storage device 25 includes an interface for the external storage device, and is connected to the bus 35 via the interface. The external storage device 25 is, for example, a floppy disk drive (FDD), a hard disk drive (HDD), a magneto-optical disk (MO) drive,
It is a CD-ROM (compact disc-read only memory) drive or the like.

The automatic performance device includes a song file (FIG. 1B) including a dummy measure of 4 beats and a management file (FIG. 1).
(A)) can be generated. The user operates the keyboard 27
The performance data is recorded in the RAM 21 as a song file by operating the etc. When a new song file is created, the song file is registered in the management file. The management file is RA along with the song file.
Recorded in M21. The management file and the song file in the RAM 21 can also be stored in the external storage device 25.

The automatic performance device can reproduce a song file. When the management file and the song file are stored in the external storage device 25, the management file and the song file are loaded from the external storage device 25 into the RAM 21 and then the song file is reproduced.

The CPU 23 reads out the management file and the song file stored in the RAM 21 and the external storage device 25, and supplies the tone parameter and the effect parameter contained in the song file to the tone generator circuit 32 and the effect circuit 33, respectively. .

However, when the user presses the reproduction switch,
Immediately after jumping over the dummy measure, playback of the actual performance data is started. The actual performance data is not delayed in the start timing of reproduction due to the presence of the dummy measure.

The CPU 23 also generates a tone parameter and an effect parameter in accordance with a note-on signal generated by the keyboard detection circuit 28 and a switch signal generated by the switch detection circuit 30, and the tone generator circuit 32 and the effect parameter, respectively. It can also be supplied to the circuit 33.

The tone generator circuit 32 generates a musical tone signal according to the supplied musical tone parameter. The effect circuit 33 applies an effect such as delay or reverb to the musical tone signal generated by the tone generator circuit 32 according to the supplied effect parameter and supplies the musical tone signal to the sound system 34. The sound system 34, which includes a D / A converter and a speaker, converts the supplied digital tone signal into an analog format and produces a sound.

The tone generator circuit 32 is a waveform memory type,
The FM system, the physical model system, the harmonic synthesis system, the formant synthesis system, the VCO + VCF + VCA analog synthesizer system, or the like may be used.

Further, the tone generator circuit 32 is not limited to one configured by using dedicated hardware, but may be configured by using a DSP + microprogram, or may be configured by a program of CPU + software.

Further, a plurality of tone generation channels may be formed by using one tone generator circuit in a time division manner, or a plurality of tone generator circuits may be used and one tone generator circuit may generate a plurality of tone generator circuits. The pronunciation channel may be configured.

The computer program or the like may be stored in the external storage device 25 (for example, hard disk) without being stored in the ROM 22. R from hard disk
By reading the computer program or the like into the AM 21, it is possible to cause the CPU 23 to perform the same operation as when the computer program or the like is stored in the ROM 22. In this way, by copying the computer program or the like from another external storage device such as a CD-ROM to the hard disk, it is possible to easily add or upgrade the computer program or the like.

The communication interface 26 is connected to a communication network 36 such as a LAN (local area network), the Internet or a telephone line, and is connected to a server computer 37 via the communication network 36. If the external storage device does not store computer programs, song files, etc., the computer programs, song files, etc. can be downloaded from the server computer 37. This automatic performance device, which is a client, has a communication interface 26.
And a command requesting the download of a computer program, a song file, etc., to the server computer 37 via the communication network 36. Upon receipt of this command, the server computer 37 delivers the requested computer program, song file, etc. to the automatic musical instrument via the communication network 36, and the automatic musical instrument transmits these computer via the communication interface 26. The download is completed by receiving the program, the song file and the like and storing them in the external storage device 25.

FIG. 4 is a flowchart showing a song recording process performed by the CPU. For example, if the user
By pressing the recording mode switch in 9 (Fig. 3),
The following process starts.

At step SA1, a header chunk and a track chunk in the song file (FIG. 1 (B)) are created. The contents of the track chunk are recorded by the subsequent processing.

At step SA2, data indicating the setting (panel setting) of the switch 29 (FIG. 3) of the electronic musical instrument is written within 4 beats (within the dummy bar) from the beginning of the track chunk. The data to write is the initial setting data,
For example, the tone color, the volume, the effect, the tempo, the time signature, etc. Even if the user is not aware, a dummy bar of 4 beats is automatically generated, and the initial setting data is automatically written in the dummy bar.

At this time, all the initial setting data may be written at the position of interval data = 0, which is the beginning of the music, or may be written in a scattered manner for four beats. As described above, the interval data of the initial setting data is pseudo interval data and has no temporal meaning.

The time for writing the initial setting data depends on the CPU
Although it depends on the processing capacity of, it will be completed in a short time. Writing does not take 4 beats.

At step SA3, the recording pointer is set at the beginning of the fifth beat. That is, next, the actual performance data is set to 5
Prepare to write from the beginning of the beat. The recording pointer is a recording address on the RAM or a position on the time axis.

In step SA4, it is checked whether or not a recording start instruction has been given. The recording start may be instructed by the user pressing a recording start switch in the switch 29, or may be a synchro start. When the recording start switch is pressed, a count sound for tempo notification of about one bar may be generated prior to the actual start of recording. In the case of the synchronized start, for example, the recording start is instructed at the same time when the user presses the keyboard 27.

When the recording start is not instructed, the process proceeds to step SA5 and panel setting (switch 29
Check whether there is any change in the setting. If there is no change, the process returns to step SA4 and the above loop is repeated until there is an instruction to start recording. If there is a change, the process proceeds to step SA6, and the changed panel setting data is added or modified and written within 4 beats (within the dummy bar) from the beginning. Then, return to step SA4,
The above loop is repeated until there is an instruction to start recording.

When the recording start is instructed, the process proceeds to step SA7. In step SA7, performance data recording processing is performed. For example, when the user plays the keyboard 27 or the like, the CPU generates the real performance data in response to the performance and writes the real performance data at the fifth beat and thereafter in the track chunk. The performance data recording process SA7 is a conventionally known process, so a detailed description thereof will be omitted. However, the interval of the played event is counted according to the set tempo to create the interval data, and Is a process for recording.

At this time, the user can start the performance at the same time when the recording is started, instead of waiting for the dummy measure time to start the performance. The user can perform a performance for recording without being aware of the dummy measures.

In step SA8, it is checked whether or not a recording stop instruction has been issued. The recording stop is instructed by, for example, the user pressing the recording stop switch in the switch 29.

If the recording stop is not instructed, the process returns to step SA7 and the above performance data recording process is repeated. When the recording stop is instructed, the process proceeds to step SA9, and as shown in FIG. 1 (A), the management file includes the song number, the song file name, the storage address, and the data type (the song file is a user song). Write.

The song number may be a serial number or a vacant number. As the song file name, a file name having a serial number (for example, song-1) may be automatically given, or the user may input an arbitrary file name. The storage address is the address on the RAM where the recording is performed. The data type indicates that the song file is a user song having a dummy bar of 4 beats due to the recording process of the above steps. Then, the song recording process ends.

FIG. 5 is a flow chart showing a song reproducing process performed by the CPU. For example, if the user
By pressing the song selection switch in 9, the following song reproduction processing is started.

In step SB1, the management file (see FIG.
The song list is displayed based on (B)). For example,
If n song files are registered in the management file, a list of n songs is displayed.

At Step SB2, it is checked whether any one of the displayed music pieces is selected. If not selected, wait until selected. When selected, the process proceeds to step SB3.

At step SB3, it is checked whether the selected song is a user song or another song. By checking the data type in the management file, it is possible to know which is the case. The user song is a song file generated by the present automatic performance device, and the other songs are song files generated by other means.

If it is a user song, step S
Proceeding to B4, the initial setting data for four beats (dummy measure) from the beginning of the music is read out and set in the tone generator circuit or the like. At this time, regardless of the value of the interval data, the initial setting data is read continuously and at high speed, and the initial setting data is set in a short period of time. Since each interval data of the initial setting data has no time meaning, the time meaning of the interval data is invalidated.

At Step SB5, the reproduction pointer is set at the beginning of the fifth beat. That is, preparation is made to read the actual performance data from the beginning of the fifth beat. The play pointer is R
It is a recording address on the AM or a position on the time axis. Then, it progresses to step SB7.

When it is determined in step SB3 that the song is another song, the process proceeds to step SB6, and the reproduction pointer is set at the beginning of the first beat. When the song is other song, it is not known whether or not the dummy measure is included unlike the user song. Even if the other song contains dummy measures, it is impossible to know how many beats the dummy measures have. For other songs, 1
Set the play pointer at the beginning of the beat and play. As described above, the present automatic performance device is compatible with not only the user song but also other songs. Then, it progresses to step SB7.

At Step SB7, it is checked whether or not a reproduction start instruction is given. The reproduction start is instructed by, for example, the user pressing the reproduction start switch in the switch 29.

When the reproduction start is not instructed, the process stands by until the reproduction start is instructed. When the reproduction start is instructed, the process proceeds to step SB8.

At Step SB8, the performance data is reproduced. When the song file is a user song, the CPU starts reading the actual performance data from the beginning of the fifth beat and supplies the musical tone parameters to the tone generator circuit and the like.
That is, when the reproduction start switch is pressed, the initial setting data in the dummy bar has already been read, so that the reading of the actual performance data is started immediately. The user can immediately listen to the performance by pressing the reproduction start switch. The user can listen to the reproduced performance as if there were no dummy measure. It should be noted that the performance data reproduction process SB8 is a process that has been conventionally known, and therefore a detailed description thereof will be omitted. However, by reading the event data while counting the interval data according to the set tempo, the performance data reproduction process SB8 can be performed according to the tempo. This is a process of reproducing.

On the other hand, when the song file is another song, the CPU reads the initial setting data or the actual performance data from the beginning of the first beat, and supplies the tone parameters and the like to the tone generator circuit and the like. Even if the song file is another song, it is possible to set the initial setting data and reproduce the actual performance data as in the conventional automatic performance device. However, depending on the amount of initial setting data, the performance may not be started immediately after the reproduction start switch is pressed.

At Step SB9, it is checked whether or not a reproduction stop instruction has been given, or whether or not the end data has been read from the track chunk. The reproduction stop is instructed by, for example, the user pressing the reproduction stop switch in the switch 29. If the end data is read from the track chunk, it means the end of the song.

If reproduction stop or end data is not instructed, the process returns to step SB8 to repeat the above-mentioned performance data reproduction process. When the reproduction stop or end data is designated, the song reproduction processing is ended.

According to this embodiment, when recording the song data, a dummy bar of 4 beats is automatically generated and the initial setting data is recorded in the dummy bar. The user can start the performance for recording immediately after pressing the recording start switch.

When the song data is reproduced, the initial setting data in the dummy bar of 4 beats is set in advance in the tone generator circuit or the like, and when the reproduction start switch is pressed, 5
The actual performance data is read from the beginning of the beat and processed.
The user can immediately listen to the performance by pressing the reproduction start switch.

However, it is not always necessary to read the initial setting data in advance before pressing the reproduction start switch. After pressing the reproduction start switch, the initial setting data within 4 beats from the beginning may be read at high speed regardless of the value of the interval data, and the actual performance data after the 5th beat may be read at the timing indicated by the interval data.

The present automatic performance device can reproduce not only the user song but also other songs. That is,
Even a song file created by means other than this automatic performance device can be played back.

Further, since the song file recorded by the present automatic performance device conforms to, for example, the standard MIDI file format, it can be reproduced by a general-purpose automatic performance device. However, in that case, the performance starts after the silent state of the dummy measure of 4 beats.

Although the case of recording new song data has been described above, other songs can be converted into user songs. In that case, the setting data set on the panel of the electronic musical instrument can be written in other songs as initial setting data. It is also possible to insert a dummy measure of a predetermined length at the beginning of the song regardless of the presence or absence of dummy measures in the song and record the initial setting data in the dummy measures. In addition, it is determined whether or not there are dummy measures in other songs (for example, the time until the first note event is checked), and if there is a predetermined length (measures) or more, a part of them will be dummy measures in the user song. And you can use it as it is, or you can rewrite the contents of the dummy measure. If the length is shorter than a predetermined length (measure), a dummy measure may be inserted at the beginning of the music and initial setting data may be written. In these cases, if you want to set the same type of initialization data as the initialization data included in the dummy measures in the other song to the dummy measures of the user song, invalidate the initialization data that already existed in the other songs. You may make it erase as much as possible.

When recording new song data, it is not limited to the real-time writing method in which the performance of a keyboard or the like is recorded as it is, but a step writing method or a musical score in which the pitch and the note length are recorded one by one by a switch operation or the like. Various recording methods such as a method of sticking a symbol corresponding to a note on a piano roll notation display can be adopted.

The dummy bar is not limited to 4 beats. The dummy measure may or may not be in measure units. Furthermore, the length of the dummy measure may be determined according to the time signature of the song. For example, a 4-beat song may have 4 beats or a multiple thereof, and a 3-beat song may have 3 beats or a multiple thereof.

The automatic musical instrument according to this embodiment is not limited to the electronic musical instrument, but may be a personal computer and application software. The application software may be stored in a storage medium such as a magnetic disk, an optical disk, or a semiconductor memory and supplied to a personal computer, or may be supplied via a network.

Further, the present automatic performance device is not limited to being built in a tone generator device or an electronic musical instrument, but each device is a separate device, and each device is connected using communication means such as MIDI or various networks. It may be something like.
Further, the present invention can be applied not only to keyboard instruments but also to string instrument types, wind instrument types, percussion instrument types, and the like. It may be applied to an apparatus for recording or reproducing performance data of an automatic performance piano.

The format of the performance data is "event + relative time" in which the time of occurrence of a performance event such as a standard MIDI file is represented by the time from the previous event, and the time of occurrence of a performance event is the song or bar. "Event + Absolute time" expressed in absolute time, "Pitch (rest) + note length" that represents performance data in terms of note pitch and note length or rest and rest length, minimum resolution of performance A memory area may be secured for each time, and the performance event may be stored in a memory area corresponding to the time at which the performance event occurs.

The method of changing the tempo of automatic performance is to change the cycle of the tempo clock, to correct the value of the timing data while keeping the cycle of the tempo clock, or to count the timing data in one processing. The value to be changed may be changed.

The song data may have a format in which the data of a plurality of channels are mixed, or may have a format in which the data of each channel is divided for each track.

The present invention has been described above with reference to the embodiments.
The present invention is not limited to these. For example, it will be apparent to those skilled in the art that various modifications, improvements, combinations, and the like can be made.

[0098]

As described above, according to the present invention,
Before the start of recording is instructed by the operation of the operator, the initial setting data is automatically recorded in the dummy bar in advance. When the recording start is instructed by the operator's operation, the performance data is recorded after the dummy bar, so that the operator can start the recording performance together with the recording start instruction.

Further, the initial setting data can be read at high speed and the initial setting can be performed at high speed regardless of the corresponding time information. Since the performance data is read at a timing according to the corresponding time information, the performance is performed at the tempo according to the time information.

Further, before the reproduction operation is instructed by the operator, the initial setting data is read from the dummy bar in advance. When the start of reproduction is instructed by the operator's operation, the performance data is read out after the dummy bar, so that the operator can listen to the automatic performance together with the instruction to start reproduction.

Further, when the song data is in the second format, the reading is started from the middle of the song data, and when the song data is in the first format, the reading is started from the beginning of the song data. The song data can be read appropriately in both the first and second formats.

[Brief description of drawings]

FIG. 1A is a diagram showing a management file,
FIG. 1B is a diagram showing a song file.
(C) is a diagram showing a track chunk.

FIG. 2 is a diagram showing timings of initial setting data and actual performance data.

FIG. 3 is a diagram showing a hardware configuration of an electronic musical instrument including an automatic performance device according to an embodiment of the present invention.

FIG. 4 is a flowchart showing a song recording process performed by a CPU.

FIG. 5 is a flowchart showing a song reproducing process performed by a CPU.

[Explanation of symbols]

1 management file, 2 song files, 3
Header chunk, 4 track chunk, 5 initial setting data, 6 actual performance data, 7 interval data, 8 events, 21 RAM, 2
2 ROM, 23 CPU, 24 timer,
25 external storage device, 26 interface,
27 keyboards, 28 keyboard detection circuits, 29 switches, 30 switch detection circuits, 31 display circuits, 32 sound source circuits, 33 effect circuits,
34 sound system, 35 bus, 36 communication network, 37 server computer

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G10H 1/00 101-102

Claims (9)

(57) [Claims] 1. A start instructing means for instructing the start of recording by an operator's operation, and a dummy bar of a predetermined period length located at the beginning of the song data before the start instructing is instructed by the start instructing means. Dummy bar generation means for generating, initial setting data recording means for recording the initial setting data dispersedly in the dummy bar, and after recording the initial setting data by the initial setting data recording means, An automatic performance device having write preparation means for setting a recording start position of performance data later and performance data recording means for recording performance data from the recording start position in response to a start instruction from the start instructing means. 2. A start instructing means for instructing the start of reproduction by an operator's operation, and song data has a dummy bar of a specific period length and information indicating that the dummy bar has the dummy bar. Determination means for determining whether the recording is performed in the first format or the second format to which the information is not added; and when the start instructing means instructs the start, When the song data is in the first format, the reading of the song data is started after the dummy bar of the specific period length, and when the song data is in the second format, regardless of the presence or absence of the dummy bar, An automatic performance device having a reading means for starting reading from the beginning of song data. 3. The reading means, when the song data is recorded in the first format, has a predetermined length located at the beginning of the song data before the start instruction is given by the start instructing means. 3. The automatic musical instrument according to claim 2, further comprising means for reading data from a dummy measure and reading the data after the dummy measure when the start instructing means gives an instruction to start the data. 4. (a) a dummy bar generation procedure for generating a dummy bar of a predetermined period length located at the beginning of the song data before the operator instructs the start by an operator, and (b) the dummy bar. Initial data recording step for recording the initial setting data in a timely manner, and (c) after recording the initial setting data by the initial setting data recording procedure, the recording start position of the performance data is set after the dummy bar. Medium for recording a program for causing a computer to execute a writing preparation procedure to be set, and (d) a performance data recording procedure for recording performance data from the recording start position in response to a start instruction from an operator from an operator. . 5. (a) A first format in which the song data always has a dummy measure of a specific period length and is provided with information indicating that the song data has the dummy measure, and a second format in which the information is not provided. (B) a determination procedure for determining whether the song data is recorded in the first format, and (b) when the operator instructs the start by an operator, when the song data is in the first format, A reading procedure in which the reading of the song data is started after the dummy bar having the specific period length, and when the song data is in the second format, the reading is started from the beginning of the song data regardless of the presence or absence of the dummy bar. A medium in which a program for causing a computer to execute is recorded. 6. The step (b) is performed when the song data is recorded in the first format.
Before the operator instructs the playback to start,
The medium on which the program is recorded according to claim 5, which is a procedure of reading data from a dummy bar of the specific period length located at the beginning of song data and reading the data after the dummy bar when instructed to start reproduction. . 7. (a) a dummy bar generation step of generating a dummy bar of a predetermined period length located at the beginning of the song data before the operator instructs the start by an operator, and (b) the dummy bar. An initial setting data recording step of recording the initial setting data in a timely manner, and (c) after recording the initial setting data by the initial setting data recording step, a recording start position of the performance data is set after the dummy bar. An automatic performance method comprising: a writing preparation step for setting; and (d) a performance data recording step of recording performance data from the recording start position in response to a start instruction from an operator by an operator. 8. (a) A first format in which song data always has a dummy measure of a specific period length and is provided with information indicating that it has the dummy measure, and a second format in which the information is not provided. (B) a determination procedure for determining whether the song data is recorded in the first format, and (b) when the operator instructs the start by an operator, when the song data is in the first format, A reading procedure in which the reading of the song data is started after the dummy bar having the specific period length, and when the song data is in the second format, the reading is started from the beginning of the song data regardless of the presence or absence of the dummy bar. Automatic playing method including and. 9. The step (b), when the song data is recorded in the first format,
Before the operator instructs the playback to start,
9. The automatic playing method according to claim 8, which is a step of reading data from a dummy bar of the specific period length located at the head of song data, and reading the data after the dummy bar when instructed to start reproduction.