JPH0336585A - Performance training device - Google Patents

Abstract

PURPOSE:To make a guide display of performance and reproduce corresponding music through easy operation by synchronizing the operation of the guide display by a guide display means with the reproducing operation for audio data by a reproducing means by a guide display control means. CONSTITUTION:This device is equipped with the reproducing means 100 which reproduces the audio data showing the music, a data storage means 101 stored with the audio data and guide control data together, and the guide display control means 102 which synchronizes the operation for making the guide display of performance operation by a guide display means by reading the guide control data out of the data storage means 101 with the operation for reading the audio data out of the data storage means 101 and reproducing the audio data. Then when respective data are read out to make the guide display of the performance operation, the guide display operation and reproducing operation are performed synchronously. Consequently, the guide display of the performance and the reproduction of corresponding music are realized through the easy operation.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention uses a storage medium in which audio data and musical note information are recorded, and synchronizes the playback of audio data and the performance guide display based on the musical note information. This invention relates to a performance training device.

[Conventional technology]

Conventionally, for example, in an electronic musical instrument, a light emitting element such as an LED is installed above each port, and the light emitting element is turned on sequentially as the song progresses, prompting the user to operate the key corresponding to the progress of the song. 2. Description of the Related Art Performance training devices have been developed to help students learn and improve their performance skills.

In the above-mentioned conventional example, each note information corresponding to the progression of a song is stored in advance in a storage medium such as a semiconductor memory or a magnetic tape, and this note information is sequentially read out and the notes are adjusted according to the scale and length of each note. Controls the lighting of the light emitting elements.

[Problem to be solved by the invention]

In this case, for example, in order to teach the melody of only a certain part of a piece of music composed of parts played by multiple instruments, the note information of that part is stored in the storage medium,
The note information will be read out sequentially.

However, this makes it difficult to grasp the entirety of the song, which is composed of parts played by multiple instruments. In other words, in the overall flow of the song, the player does not know when to pronounce the part he/she should play (or learn) or the image of the song as a whole.

To solve this problem, it is common practice to play a record or tape on which the music is recorded, and then the learner starts the performance training device at the same timing. However, in this case, especially for beginners, there is a problem in that it is difficult to know when that part starts in the entire piece of music being played, and there is a good chance that there will be a lag with the played sound.

Further, it is very complicated to operate the record and tape playback devices at the same time, and there is a problem in that the operation is particularly difficult for beginners.

An object of the present invention is to enable performance guide display and playback of the corresponding song to be realized with simple operations, and to reliably synchronize the timing of the guide display for a predetermined part in the playback song. There is a particular thing.

[Means to solve the problem]

The present invention first includes a guide display means for displaying a guide for musical instrument performance operations based on guide control data. The means includes, for example, an LED provided on the top of the electronic keyboard instrument corresponding to each port and indicating the key to be played by lighting the LED.
It is a light emitting element such as.

Of course, there is also a means to guide the pitch switch of electronic wind instruments,
It can also be realized as a means for guiding the positions of frets and strings in an electronic stringed instrument. Furthermore, an LED or the like may be provided above each port of a natural musical instrument (acoustic piano, etc.).Specifically, the guide control data is a display start command that instructs the guide display means to start displaying the guide. Instruction data such as notes, which are MIDI messages.
On message and time control data, such as MI, that controls the time when the guide display means displays the guide
Data specified using an exclusive message that is a DI message, and display end instruction data that instructs the guide display means to end the guide display, for example, M
Electronic musical instruments (electronic keyboard instruments, etc.) that include a note-off message, which is an IDI message, and whose tone can be set
When displaying a guide for performance operations, the leading part of the guide control data includes tone setting data, such as a program change message such as an MlDI message, for setting the tone before starting the guide display. The guide control data in these cases is data for displaying a guide for the performance operation of a predetermined performance part (piano part, etc.) in, for example, an orchestra performance (an sample performance).

Next, it has a reproducing means for reproducing audio data representing a song. The means is, for example, a compact disc player. Of course, it may also be a DAT (digital audio recorder) or the like. The audio data is, for example, minus one data indicating a music piece of a performance part other than the above-mentioned predetermined performance part.

It also has data storage means for storing a mixture of audio data and guide control data.

The means is, for example, a compact disc, in which case the audio data is stored in the audio data area of the program area of the compact disc, and the guide control data is also stored in the user's bit area of the subcode area of the program area. Also, in the same lead-in area, table of contents data for indexing the audio data and guide control data stored on the compact disc is stored, and the data is stored, for example, in correspondence with each of the audio data and guide control data. This is data that corresponds to the number of each first frame of each data.

Furthermore, an operation of reading guide control data from the data storage means and causing the guide display means to display a guide for performance operations, and an operation of reading audio data and causing the reproduction means to reproduce the audio data are performed in synchronization. It has guide display control means. The means also includes temporary storage means for temporarily storing guide control data. In this case, the guide display control means reads in advance guide control data for displaying a guide from the data storage means into the temporary storage means, and after cueing the audio data to be played back on the data storage means, The guide display for the performance operation on the guide display means and the playback of the audio data on the playback means are started in synchronization, and then the guide display for the performance operation on the guide display means is sequentially read out from the temporary storage means. Let it happen.

With the above configuration, if the guide display and audio data playback are to be started synchronously as described above, for example, the guide display control means may display the audio data playback and the guide display at the beginning of the guide control data. It is also possible to include time control data to adjust the timing.

Furthermore, for example, in the left channel of the audio data area of a compact disc, audio data that is first minus one data indicating a music piece of a performance part other than the first performance part (piano part, etc.) is stored. On the right channel, there is a second section that shows the music of the performance part other than the second performance part (violin part, etc.).
The subcode area of the compact disc may be configured such that audio data, which is minus one data, is stored, and data for displaying guides for performance operations of the first and second performance parts is stored. good.

[For production]

In the present invention, guide control data for displaying guides for musical performance operations and audio data to be reproduced in correspondence with the guide control data are stored together in a data storage means such as a single compact disc. In this case, efficient data storage can be achieved by, for example, storing audio data in the audio data area and storing guide control data in the user's bit area of the subcode area.

When each piece of data is read out from the above-mentioned compact disc or the like and a guide display for performing operations is performed, the guide display control means synchronizes the guide display operation on the guide display means and the audio data playback operation on the playback means. Let it happen. That is, for example, after reading the guide control data into the temporary storage means in advance and locating the beginning of the audio data, the guide display for the performance operation on the guide display means and the playback of the audio data on the playback means are started in synchronization. By doing so, it is possible to display a guide for performance operations in synchronization with the music of the audio data with a simple operation.

Here, if time control data is included at the beginning of the guide control data to cause the guide display control means to adjust the timing of audio data playback and guide display, the part will be displayed after a certain period of time from the start of audio data playback. It is also possible to display a guide indicating the start of a performance at exactly the same time.

In addition, when applied to electronic musical instruments, if tone setting data for setting the tone is included at the beginning of the guide control data, the tone setting of the electronic instrument can be automatically performed before the guide display starts. can.

Furthermore, by storing an orchestral performance of Minus One (other than the piano bar) as audio data, and displaying a guide for the piano part along with the playback, the performer can play according to the guide display. , you can get the effect of playing a piano part with an orchestra in the background.

In addition, since audio data can be recorded in stereo on compact discs, etc., different minus one part audio data is stored in the left channel and right channel, and guide control data for each part corresponding to the subcode area is stored. If you memorize this, you can enjoy playing the two instruments based on the guide display.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

(Configuration) FIG. 1 is a block diagram showing the overall circuit configuration of an exercise training/automatic performance device 1 equipped with an electronic keyboard instrument and a compact disc player, which is an embodiment of the present invention.

In addition to playing a normal compact disc (hereinafter abbreviated as CD), this exercise training/automatic performance device 1 can also play audio data of a song excluding the piano part, for example, in the next channel of the audio data area of the CD. For example, audio data of the same song except for the violin part is recorded in each channel. Furthermore, automatic performance data for the piano part and automatic performance data for the violin part of the song are recorded in the subcode area of the CD.

For example, if you want to practice the +lJ+ piano part, or if you want to have the melody of that part played automatically on an electronic keyboard instrument, you can play the CD by keystrokes in advance and play the subchord piano part. The automatic performance music data is read and temporarily stored in the automatic performance memory. Then, the data in the same memory is sequentially read out, and the LED on the keyboard lights up or automatic performance is performed according to the data. At the same time, the audio data of the left channel song excluding the piano part of the song is simultaneously read out. CD
You can synchronize playback on the side. In addition, the automatically played song data for the subcode also includes tone specification data.
Automatically set to piano tone.

The same is true when you want to practice the violin part of that song, or when you want to have the melody of that part automatically played by an electronic instrument.In this case, at the same time, the audio data of the R channel song excluding the violin part of that song is
Synchronous playback can be performed on the D side.

The electronic keyboard instrument is an electronic musical instrument with a PCM sound source.
Normal manual performance is also possible using the tone data stored in the waveform memory.

In FIG. 1, the area surrounded by a dashed line 100 is the CD
Player section (hereinafter referred to as CD player section 100)
, the part surrounded by the dashed-dotted line 200 is the electronic Sy1 keyboard instrument section (referred to as the electronic keyboard instrument section 200).

First, the block configuration of the CD player section 100 will be explained.

The CD 105 is a compact disc, and is played by being set in a holder (not shown) of the CD player 100. In addition, in this embodiment, the CD player unit 100 has recorded thereon, in addition to a compact disc for playing normal audio data, minus-one performance music data, automatic performance music data, etc. that are particularly related to this embodiment. Compact discs can be played. In the following description, when specifically referring to the latter compact disc, CD-MI DI105
In normal explanation, it is simply called CD105.

The TOC memory 101 is a lead-in area T read out when the CD 105 is set.

This is a memory that stores C data. The TOC data will be described later.

The CDlIll unit 102 is, for example, a microprocessor, and controls the entire CD player unit 100, and exchanges various data with the subcode signal processing circuit 110, the musical instrument control unit 201, the TOC memory 101, etc. Also, when driving the CD 105, a drive control signal is output to the disk servo circuit 103 and the pickup servo circuit 104. Furthermore, during guided performance/automatic performance, the selection circuit 115 is controlled to select the minus one performance data recorded in either the L channel or the R channel, and when reading the automatic performance music data, the analog selection circuit 115, which will be described later, is controlled. Switch (SW) 112 is turned off to mute the reproduced sound.

The disk servo circuit 103 controls the rotation speed of the disk motor 106 that rotationally drives the CD 105.
Linear velocity of each track of D105 (Linear Vel
ocity) is controlled to be constant.

Also, the pickup servo circuit 104. is CD105
The focus servo and tracking servo of the optical pickup 107 irradiates each track with a laser beam.
Perform servo. The focus servo detects a focus error from the state of the reflected light of the laser beam,
The objective lens in the optical pickup 107 is controlled and driven in the optical axis direction based on the focus error, and the tracking servo controls the optical pickup 107 while detecting the deviation of the laser beam from the center of the track of the CD 105. The laser beam irradiated from the optical pickup 107 is controlled and driven in the radial direction of the CD 105 so that the laser beam irradiated from the optical pickup 107 is accurately irradiated to the center of the track of the CD 105.

Here, protrusions called pits are carved on the side of the CD 105 that is irradiated with the laser beam, and PCM signals (digital signals) are recorded by these protrusions. The optical pickup 107 detects the presence or absence of a pit based on the amount of reflected light from the irradiated laser beam, and outputs an electric signal corresponding to the presence or absence of a pit and its length to the demodulation circuit 10B.

The demodulation circuit 108 detects a frame synchronization signal from the electrical signal output from the optical pickup 107, identifies the delimiter and order of each symbol word (audio data and subcode), and furthermore identifies the delimiter and order of each symbol word (audio data and subcode), and The EFM-modulated 14-bit symbol word (subcode, audio data, etc.) in the frame is EFM demodulated and converted into the original 8-bit symbol word. Of the EFM demodulated symbol words, the audio data is output to the audio data signal processing circuit 109 and the subcode is output to the subcode signal processing circuit 110.

The audio data signal processing circuit 109 inputs audio data to an internal RA (not shown).
M (Random Access Memory), performs error correction processing based on the Reed-Solomon code, and performs deinterleaving processing to restore each sample of 16-bit digital audio data in frame units, and Each of these sample data is output to the selection circuit 115.

The selection circuit 115 selects either the L channel or the R channel audio data based on an instruction from the CD control unit 102 and outputs it to the D/A converter (digital/analog converter) 116 .

The D/A converter 116 includes an LPF (low pass filter) 1 having a cutoff frequency of A, which is the sampling frequency.
11, it converts input 16-bit digital audio data into a corresponding analog signal and outputs it to an analog switch (SW) 112.

The analog switch 112 is controlled on/off by the CD$IJ control unit 102, and the analog audio signal output from the LPF III is output via the amplifier 113 and the speaker 114 when the analog switch 112 is on. The sound is emitted to the outside.

The subcode signal processing circuit 110, as described later,
Similar to the audio data signal processing circuit 109, the 8-bit subcode containing the IDI message is subjected to error detection and correction processing as well as de-interleaving processing to restore the subcode. Of the restored subcodes, two control pits P, , Q are output to the CD control unit 102, and the remaining R, S, T,
U.

The six user bits of v and W are stored in the electronic keyboard instrument section 20.
Output to the musical instrument control section 201 in 0.

Next, the block configuration of the electronic keyboard instrument section 200 will be explained.

The musical instrument operation unit 202 has a configuration shown in FIG. 2. That is, part designation keys 2024 and 202° select part A part and part B part performance data. A music designation key 2026 is used to designate a music during guided performance or automatic performance. The data read key 202 instructs to read the automatically performed music data of the subcode. Guide start key 2
028 instructs the start of the guide performance. The O, Dobray start key 2029 instructs the start of automatic performance. Minus one start key 202+o instructs minus one performance. The timbre designation key 202++ specifies the timbre of a musical tone. Also, it has a keyboard 2021 consisting of a plurality of keys 2022 as a keyboard function, and an LED 2'0 above each key 2022 as a guide performance function.
It has 23. Although not specifically shown, a normal CD
The player also has switches for playback functions such as PLAY and STOP, switches for pause function, and switches for special functions such as random memory song selection.

Next, returning to FIG. 1, the musical instrument control section 201 is, for example, a microprocessor, and monitors the operating states of various keys, etc. (FIG. 2) of the musical instrument operating section 202 at predetermined time intervals. Then, pitch information corresponding to the pressed key 2022 is set, and timbre information (program number) specified by the timbre specification key 202■ is set. In addition, processing for guided performance/automatic performance and normal CD
It performs processing for operation and issues control instructions to the CD control unit 102 as appropriate.

The guide lamp drive circuit 214 controls the L of the musical instrument operation section 202 based on the control from the musical instrument control section 201 during guided performance.
Controls the light emission of the ED2023 (Fig. 2).

The waveform memory 203 is a ROM in which waveform data of various musical tones is digitally encoded and stored in advance using the PCM method.
(read-only memory), an address counter for accessing the ROM, and first and second address registers for setting the initial value and cumulative value of the counter.

The instrument control unit 201 transfers pitch information set based on key press operations or note-on instructions during automatic performance to the scale control circuit 204, and transfers pitch information set based on key press operations or note-on instructions during automatic performance to the scale control circuit 204, and operates the tone designation key 202 or performs automatic performance. The tone information (program number) set based on the program change instruction is sent to the tone control circuit 2.
Output to 05.

The timbre control circuit 205 sets the start address of the storage area in the waveform memory 203 in which the waveform data of the timbre corresponding to the program number input from the musical instrument control section 201 is stored, to the first address in the waveform memory 203 (not shown). Set to address register 1.

The scale control circuit 204 also controls the musical instrument 81111 section 201.
The address interval corresponding to the pitch information added from . . . is set in a second address counter (not shown) in the waveform memory. Then, an address counter (not shown) in the waveform memory 203 sequentially accumulates the waveform from the first address set in the first address register to the address interval set in the second address register. The ROM in the memory 203 is accessed, and the instantaneous value of the waveform data of the timbre corresponding to the set timbre information (program number) is read from the memory. The waveform data read from the waveform memory 203 is output to the envelope control circuit 206.

Furthermore, the musical instrument control unit 201 presses i! When an operation or a note-on instruction of automatically performed music data is detected, a note-on signal and velocity data corresponding to the key press speed are output to the note-on/off control circuit 207, and the note-on signal and velocity data corresponding to the key press speed are output to the note-on/off control circuit 207, When a note-off instruction is detected, a note-off signal and off velocity data corresponding to the MN speed are output to the note-on/off control circuit 207.

Note on/off control circuit 207 is connected to musical instrument control section 201
The envelope control circuit 206 is controlled based on the note-on/off signal and velocity data applied from the above, or the above-mentioned off-velocity data, and an envelope corresponding to the above-mentioned velocity data and the above-mentioned off-velocity data is outputted from the envelope control circuit 206. . That is, the envelope attack time is controlled in accordance with the velocity data, and the envelope release time is controlled in correspondence with the off velocity data.

The envelope control circuit 206 generates envelope data of a predetermined shape in response to the control signal applied from the note on/off control circuit 207, and multiplies the envelope data by the waveform data applied from the waveform memory 203. Then, the multiplied value is output to a D/A converter (digital/analog converter) 208.

D/A converter 208 and LPF (low pass filter) 2 having a cutoff frequency of sampling frequency A
09 converts the input waveform data subjected to the envelope control (the multiplication value) into an analog waveform signal corresponding to the waveform data. The converted output is then emitted to the outside via an amplifier 21O and a speaker 211.

Furthermore, the musical instrument control section 201 controls the subcode signal processing circuit 1.
Converts the 6-bit R-W data (described later) input from 10 into an 8-bit MIDI message, and
IDI messages are stored in RAM (Random Access
s Memory) etc. to the automatic performance memory 212.

The MIDI message written to the automatic performance memory 212 is the automatic performance music data stored in the subcode of CDIO3, and is
02 song specification key 2026 and data read key 202
This is a MIDI message of automatic performance music data selected by No. 7.

Although not specifically shown, the timer circuit 213 includes a time counter, a buffer for tone length data, a comparison circuit, etc., and based on the MIDI message stored in the automatic performance memory 212, This circuit measures the time corresponding to note length data when performing guided performance or automatic performance.

(Recording format on CD) Next, the recording format of digital data on the CD 105 will be explained.

When recording/playing digital data on a CD, 2
Two important operations take place. That is, error correction and modulation (and demodulation, 1J1).

Error correction refers to defects in recording media and optical pickup 107.
This process is performed by the audio data signal processing circuit 109 shown in FIG. be done.

Modulation, when handling digital data on a certain medium, refers to the process of converting it into an electrical signal waveform suitable for recording and reproducing on that medium.When recording digital data on a CD, the EFM modulation method described later is used. Ru. Demodulation is a process for restoring the original digital data from the modulated signal read from the medium, that is, the CD, and is executed by the demodulation circuit 108 in FIG. 1.

Depending on the above two operations, error correction and modulation, C
The recording format of digital data in D105 is determined. FIG. 3 shows the recording format of digital data to be recorded on the CD 105 in this embodiment.

As shown in the figure, digital data is recorded in units called frames, and from the beginning of each frame,
24 channel bit sync pattern (M pattern)
301. Subcode for 1 symbol 302. Audio data for 12 symbols 303. Parity word for 4 symbols 304. Audio data for 12 symbols 3
Parity words 306 for 0.5.4 symbols are arranged.

In the frame-format data string, before EFM modulation, which will be described later, is performed, the l symbol in FIG. 3 is composed of 8-bit data. On the other hand, the audio data to be recorded on the CD 105 is digital data in which each sample is sampled at 44.1 KHz and quantized at 16 bits. Therefore, 1
A sample is represented by two symbols. As described above, since a total of 24 symbols worth of audio data 303, 305 are recorded in one frame in FIG. 3, a total of 12 samples worth of audio data is recorded in an l frame. Note that the subcode 302 will be described later.

Audio data for the above 12 samples 303.305
As shown in FIG. 3, parity words 303 and 306 for a total of eight symbols are added.

This is a code added to correct data errors in frame units, and is determined by the audio data signal processing circuit 109 using the parity words 304 and 306 during playback in the CD player section 100 in FIG. By doing this, data errors within each frame are automatically corrected.

Here, a total of 24 symbols, that is, a total of 12 samples of audio data 303 recorded in one frame in FIG.
．． 305 does not record temporally continuous samples of audio data. This is due to the following reasons.

In the above-mentioned error correction using parity words, correction cannot generally be performed if the number of data errors within one frame exceeds a certain number of bits.

In particular, on CD discs, large data errors tend to concentrate locally due to scratches, dirt, etc.
In many cases, it cannot be corrected by simply reproducing, even if the parity word is added.

Therefore, the order of each sample of the audio data 303 and 305 is divided into consecutive frames (
For example, by dispersing the audio data (for example, a maximum of 108 frames) and recording it on a CD disc, and rearranging it in the original order using the same rule when playing back, it is possible to disperse concentrated errors on the CD disc during playback. Error correction using parity words can be easily performed.

The reordering during recording is called interleaving, and the reordering during playback is called deinterleaving. In this embodiment, when recording digital data in frame units, recording is performed while performing this interleaving, so a total of 12 samples of audio data 30 are stored in one frame as shown in FIG.
3.305 means that data that is scattered and scattered will be recorded. In addition, parity word 30
4.306 is incremented together with audio data 303.305, and only that portion of subcode 302, which will be described later, is independently incremented.

In this embodiment, the parity word 304 .
As 306, a parity word called CIRC (cross-interleaved Reed-Solomon code), which is generally used for recording/reproducing CDs, is used. Cross interleaving is performed by dividing the above interleaving into multiple stages, and interleaving (sometimes called scrambling)
In this method, a parity word is added to the output, the data string containing the parity word is further interleaved (sometimes called scrambling), and a parity word is added again in multiple stages.

This improves the ability to correct data errors, and in this case, by using a special parity word called a Reed-Solomon code, it is possible to exhibit even better error correction ability.

In this manner, when reproducing the signal recorded on the CD 105 in FIG. 1, de-interleaving processing that is completely opposite to that at the time of recording is performed to reproduce the audio data 303 and 305. This process is executed by the audio data signal processing circuit 109 shown in FIG.

Next, as explained above, before modulation is performed, one symbol in FIG. 3 is 8 bits, but the data cannot be recorded on a CD disc in this data format.

That is, in the digital data framed as shown in FIG. 3 (including subcode 302 described later), each bit constituting each symbol has logic "1" and logic "0".
In general, we do not know what probability this will occur.

The optical pickup 107 in FIG.
When detecting digital data as an electrical signal from the upper bit, if either logic "1" or "O" continues for a long time, a DC component will occur and the bit interval information will be interrupted. Here, the pickup servo circuit 10 of FIG.
In the above-described focus servo and tracking servo processing in Section 4, a signal called an error signal is generated and used, and this error signal is extracted from the output of the optical pickup 107, which is the main signal. and,
If this error signal contains many low frequency components, especially DC components, stable servo cannot be applied. Also,
The demodulation circuit 108 in FIG.
A synchronized clock is generated from the output of 7 to perform reproduction processing of digital data, but if the bit interval information is interrupted as described above, this clock cannot be generated.

Therefore, in order to remove this DC component as much as possible,
Generally, when recording on a CD disc, a modulation called EFM modulation is performed. In EFM modulation, for the 8-bit data pattern of each symbol in FIG. The 8-bit pattern is replaced with the 14-bit pattern. Furthermore, 3-bit connection bits are inserted between the 14-bit patterns. The linking bits have the role of ensuring that the above-mentioned conversion criteria are followed when the 14-bit patterns are linked.

Through EFM modulation as described above, each 8-bit symbol word in the frame-by-frame digital data shown in FIG. 3 is converted into 17-bit data and recorded on a CD disc. In order to reproduce the EFM modulated signal recorded on the CD 105 of FIG. 1 in this manner, demodulation processing that is completely opposite to that described above may be performed, and this processing is performed in the demodulation circuit 108 of FIG.

Here, the 24 channel bit sync pattern 301 in FIG. 3 itself is not interleaved or modulated, and the CD 10
It is added at the end after interleaving and modulation are performed when recording digital data to 5. The same pattern is a signal used to synchronize the frame shown in FIG. 3 during demodulation in the demodulation circuit 108, that is, to identify the start of a frame, and is never generated in other signals 302 to 306. Patterns are used.

Next, as digital data recorded on a CD disc, in addition to the audio data 303 and 305 shown in FIG. 3, there is a data area called a subcode of 1 symbol 8 bits per frame. FIG. 4 shows a data format centered on the subcode 302. Each bit of the 8-bit subcode 302 is P, QSR, S, T, U.
,V.

It is called W. As shown in the figure, an 8-bit subcode is assembled in units of 98 frames, and each 8-bit subcode in the 0th frame and the 1st frame of these 98 frames is a sync pattern for the subcode. The subcode signal processing circuit 110 (
(described later) is a frame recognition pattern for identifying subcode information P to W of the second frame to the 97th frame.

Then, bits P and Q of the 2nd frame to the 97th frame
is standardized as a control bit. This area is used for system control in normal CDs.

That is, the control bit P is data indicating between a song or during a song, and if the frame corresponds to an inter-song and there is no audio data 303 or 305 (Figure 3), it is 1, and if the frame corresponds to an inter-song and there is no audio data 303 or 305 (Fig. 3), it is 1; If it exists, it is set to 0. The control bit Q consists of the 96 bits from the 2nd frame to the 97th frame, and includes the track number on the CD, the number of frames of the subcode, time information (minutes, seconds) from the beginning of the song, and information about the time from the beginning of the CD. absolute time, absolute number of frames,
and error detection code (CRC code) for each of the above information.
represents data such as Therefore, each of these pieces of information is updated every 98 frames (approximately every 1775 seconds), and the CD shown in FIG.
The control unit 102 reads this information via the subcode signal processing circuit 110 to perform music selection access and dII
Displaying information.

As will be described later, information called TOC, which corresponds to the table of contents of one CD disc, is stored in the lead-in area on the CD disc.

B) R-W is called a user's bit, and its use for still images and the like has already been devised. In this embodiment, as described later, this user's bit is set to M I D I (
Musical Instrument Digital
l Interface) data is recorded. Here, of the 98 frame units in FIG.
In the user's bits R-W of the subcode of a frame, as shown in FIG. It is assembled to include four packs of data in units called packs for symbols.

FIG. 6 shows the general data format of each pack (24 symbols). R-%Q) Among the 0th to 23rd symbols, the upper 3 bits of the O-th symbol are called "mode" and indicate the general classification of what data this packed data represents. is called an "item" and indicates a subclassification of pack data. The first symbol indicates hardware operation information of the decoder. And the 4th~
Data is entered in the 19th symbol. Further, an error correction code is added in units of packs, and the second to third symbols have parity Qo, Q, and the 20th to 23rd symbols have parity P. -P3 is added.

Parity Qo, Ql is a (4,2) Reed-Solomon code of CF (2h) for the 2nd to 3rd symbols, and parity 0 to P3 is a GF for the 0th to 23rd symbols.
(26) is a (24,20) Reed-Solomon code.

As can be seen from this configuration, when recording the subcode 302 (Fig. 3) on a CD disc, the user's bit R
An error correction code is added to ~W on a pack-by-pack basis, and interleaving similar to that of the audio data 303, 305 (FIG. 3) described above is performed on a pack-by-pack basis. Then, as described above, CD10 in FIG.
When reproducing a signal recorded in 5, first, the demodulation circuit 10B of FIG. 1 performs demodulation for the EFM modulation described above and identifies the frame bottom of FIG. 3.

Of these, the subcode 302 portion is extracted and sent to the subcode signal processing circuit 110 in FIG. In this circuit, de-interleaving is performed on a pack-by-pack basis, and error correction is performed using the parities Qo, Q, , P, ~P3 in Fig. 6, and the user's bit R of the 4th to 19th symbols of each pack is -W is extracted.

In this embodiment, using the above pack format, MI
Record DI data. The specific format is shown in FIG. That is, first, the top three of the Oth symbol
The "mode" of the bit is 3, which indicates CD-MIDI.
A 3-bit code indicating that automatically performed music data is recorded as MIDI data is stored as the bit code and the lower 3-bit "item". 1st
The symbol "instruction" is, for example, a command instruction when the electronic keyboard instrument section 200 has a function of automatically reading and sampling audio data from a CD using a MIDI message code. The CD player section 100
However, this embodiment does not have such a function, so all general codes are
0" is set. MIDI messages, which will be described later, are recorded in the fourth to nineteenth data fields.

FIG. 8 is a diagram conceptually showing the recording state of the audio data and automatic performance music data used in this embodiment on the CD 105 (see FIG. 1).

As explained with reference to FIG. 3, each of the above data is recorded in units of frames, and is recorded from the inner circumference to the outer circumference of the CD 105.

Then, the innermost area of the disk (with a diameter of 46 m to 50 m)
The area □) is called the lead-in area 401, and among the data recorded in this area in units of frames in Figure 3, subcode data 404 (recorded in the format 302 in Figure 3) is OC('rable
Information corresponding to a table of contents for one disc is recorded. An example of the format of this TOC is shown in FIG. 9, which will be described later.

Furthermore, in a program area 402 following this lead-in area 401, audio data 40, which is the main data, of the data recorded in units of frames in FIG.
3 (recorded in the formats 303 and 305 in FIG. 3), for example, song data for three songs is recorded.

- In the case of a boat fishing CD, audio data can be recorded in stereo on the L channel and R channel, but in this embodiment, audio data 4031A to 4033^ and 403□ to 4033m are recorded independently on the L channel and R channel, respectively. During playback, either LR is selected and the sound is output. That is, in the L channel of the first song, for example, audio data 403+^ of a song performed by an orchestra except for the piano part is recorded. This is called minus A audio data. A in this case represents the piano. Similarly, the R channel of the first song contains audio data 4 of the song excluding the violin part, for example.
03+i is recorded. This is called minus B audio data. B in this case represents the violin. This is multiple audio data, in this example, audio data for three songs 4031A, 403+a, 4032^ and 403zm
and 4033a and 4033B are recorded.

Also, in the program area 402, among the data recorded in frame units in FIG.
4 (recorded in the format shown in Figure 3 302), automatic performance music data 4 for three songs of A-bert (piano), which is subtracted from the L channel audio data.
04. ^, 404zA and 404za, and automatic performance song data 404 for three songs, the B part (Vaiorin) that is subtracted from the audio data of R Chi and Yanel.
ll540421 and 4043m have been recorded. These automatically performed song data are stored in the electronic keyboard instrument section 20 of FIG.
0 is read out and used for automatic performance.

Next, the TOC will be explained again using FIG. 9. As can be seen from the same figure, the lead-in area 401 in FIG.
The TOC data recorded as the subcode data 404 is the audio data 4031A to 4033A, 403 recorded in the program area 4σ2 in FIG.
4m~403■, and each automatic performance song data 4041A~
The first frame numbers of 4043^ and 4040 to 404311 are recorded. Here, since a frame number is uniquely determined for each position on the disc in the program area 402 from the inner circumference to the outer circumference, the position of each audio data and automatically performed music data in the program area 402 can be It can be determined as the first frame number. As a result, as will be described later, when the CD control unit 102 in FIG. 1 accesses each of the above-mentioned data on the disc, it can access any data by first referring to the TOC data. In this way, each audio data and automatically performed music data on the disc can be managed by the TOC. Therefore, the audio data for each song can be recorded in the audio data area (303 and 305 in Figure 3) regardless of the order of the songs, and the automatically played music data for each song can also be recorded in the subcode data area. (302 in FIG. 3) allows recording regardless of the song order and without the need to synchronize with the corresponding audio data.

FIG. 10 shows MIDI messages used in this embodiment. A MIDI message according to the MIDI standard consists of 1 byte and 8 bits, and is composed of multiple bytes.
It consists of a status byte indicating the type of message and its data byte.

First, in this embodiment, a note on message 501, a note off message 502, and a program change message 503 are used as voice messages.

Note on message 501 is a command corresponding to the action of pressing a key (202+ in Figure 2) on an electronic keyboard instrument, and the status is "9X" (expressed in hexadecimal notation: X indicates the MIDI channel). ), the first byte of data 1 is the note number 5011, and the second byte of data 2 is the velocity 5012. 1st during guide performance
When the musical instrument control section 201 shown in the figure reads out the message 501 from the automatic performance memory 212, the control section issues an instruction to the guide lamp drive circuit 214 to select the key 2022 shown in FIG. 2 corresponding to the note number 501+ of the same message. Turn on the upper LED 2023.

Furthermore, when the musical instrument control unit 201 reads out the message 501 during automatic performance, the control unit uses the note number 501+ of the message as pitch information to the scale control circuit 201.
Set to . As a result, the waveform memory 203 is accessed as described above, and reading of the corresponding waveform data is started. Along with this, the musical instrument control unit 201 controls the note-on signal and the velocity 5 of the message 501.
01z is output to the note on/off control circuit 207.

As a result, the control circuit controls the envelope control circuit 206 as described above, an envelope is added to the waveform data output from the waveform memory 203, and sound generation is started.

Note off message 502 in FIG.
! In terms of a keyboard instrument, this is a command corresponding to the action of releasing the keyboard (202+ in Figure 2), and the status is "8X".
The first byte of data l is note number 502+, and the second byte of data 2 is off velocity 5022.

When the instrument control unit 201 in FIG. 1 reads the message 502 from the automatic performance memo IJ 212 during guide performance, the control unit instructs the guide lamp drive circuit 214 to correspond to the note number 502I of the message. Figure 2! ! 202z Upper (7) LED 2023'
tl/4 Turn on the light. Also, during automatic performance, the instrument control unit 2
01 reads out the message 502, the controller outputs the note-off signal and the off-velocity 5022 of the message 502 to the note-on/off control circuit 207. As a result, the control circuit controls the envelope control circuit 206 as described above, whereby a release envelope is added to the waveform data output from the waveform memory 203, and an operation toward silencing is started. . Then, at the timing when the amplitude of the musical tone becomes 0,
The musical instrument control unit 201 causes the scale control circuit 204 to delete the note number 502I of the same message. As a result, reading of the corresponding waveform data from the waveform memory 203 is stopped.

The program change is the tone specification key (202+ in Figure 2).
+), the status is rcXJ, and it has a program number as 1-byte data (data 1).

The instrument control unit 20 in FIG. 1 during guided performance or automatic performance.
1 reads the message 503 from the automatic performance memory 212, the control section outputs the program number 5031 to the tone control circuit 205. As a result, as described above, the timbre control circuit 205 sets the start address of the storage area in the waveform message 203 in which the waveform data of the timbre corresponding to the program number is recorded to the first address in the waveform memory 203 (not shown). Set to address register 1. As a result, during guided performance, the player can perform manual performance using that tone, and during automatic performance, automatic performance is performed using that tone.

Next, in this embodiment, a special command is assigned as an exclusive message exclusively for CD-MIDI. Originally, an exclusive message was
This message is exclusive to the manufacturer that has registered the D code, but in this example, in order to perform special control for CD-MIDI, the CD-MIDI is used as an ID code.
A new ID has been established for this purpose, and tone length control commands have been defined.

In other words, as a tone length control command, as shown in FIG.
4+J, the configuration includes several bytes of data consisting of a tone length control command code 5042J and tone length data 5043J.During guided performance or automatic performance, the instrument control unit 20I in FIG. 1 performs automatic performance. When the tone length control command 504 is read out from the memory 212, the control section controls the timer circuit 21.
3, the tone length data 5043 is sent. Timer circuit 21
3, when a time passage corresponding to the note length data 5043 is detected, a coincidence signal is output to the musical instrument control section 201. As a result, the musical instrument control section 201 controls the automatic performance memory 212.
As a general rule, the following data is stored in the notebook/
The off message is read and the note off operation described above is performed. This is an example of a monophonic
In the case of polyphonic music, a note number may be entered in the tone length control command 504, and the tone length of that note number may be controlled by the control section.

FIG. 11 shows an example of data for one song recorded in the subcode 404 of the disc in FIG. 8 (4'041A in the same figure, etc.) using the above-mentioned MIDI message for CD as automatically performed music data. ).

At the beginning, program change p+ (5 in Figure 10)
03) is included. During guided performance or automatic performance, when this message is read from the CD 105 in FIG. 1 based on the control operation described later and is given to the instrument control unit 201 from the subcode signal processing circuit 110, the control unit performs the following operations as described above. Then, the program number (see 5031 in FIG. 10) is sent to the timbre control section 205, where a predetermined area in the waveform memory 203 is designated and the waveform of the corresponding timbre is designated.

After this, data is included to turn on the <LED202] (Figure 2) or perform automatic performance based on the guide performance, and these data are used to trigger the start of the guide performance or automatic performance as described later. At the same time, the signal is transferred from the subcode signal processing circuit 110 to the automatic performance memory 212 via the musical instrument control section 201.

After that, while the musical instrument control section 212 reads out the automatic performance music data stored in the automatic performance memory 212 one by one,
Execute guided performance or automatic performance.

First, the first tone length control command j2o is for time adjustment. In other words, in an orchestral performance, for example, it would be fine if the piano part, for example, started from the beginning of the performance, but there are cases where it starts from the middle. In this case, minus A audio data (Fig. 8 403.^
etc.) and the guided performance or automatic performance based on the automatically performed music data (such as 404+^ in FIG. 8) stored in the automatic performance memory 212 must be synchronized. Therefore, for example, in order to count the time until the performance of the piano part starts, this tone length control command l. is used. When reading automatically performed music data from the automatic performance memory 212 shown in FIG.
This tone length control command No. is stored at the beginning, so
Musical tones have not yet begun to be produced. When the timer circuit 213 detects the time corresponding to the note length data (see 5043 in FIG. 10) of the same command, the next note-on message nol is read out. This results in
Even if the piano part starts in the middle, it can be reliably synchronized with the playback sound of the audio data. In addition,
If the piano part has started from the beginning, this first note length control command 10 is not necessary; these operations are as follows:
For example, orchestra performance and automatic performance music data 404+ based on minus B audio data 403+a in FIG.
The same applies to the guided performance or automatic performance of, for example, a violin bart by a.

Next, in FIG. 11, a set of data including a note-on message, a tone length control command, and a note-off message follows. That is, nol, 11 and nf, or No2, 12 and nf2, etc. Based on these control data, the musical instrument control section 201 shown in FIG. 1 controls guided performance or automatic performance as described above.

At the end of the part song, stop message stp
is read out. Thereby, the musical instrument control section 201 returns from the guided performance or automatic performance mode to the normal mode.

(Standing and sitting) FIGS. 12 to 17 are flowcharts of operations when each key in FIG. 2 in the musical instrument operation section 202 in FIG. 1 is operated. These operational flows are mainly executed cooperatively by the musical instrument control unit 201, CD control unit 102, subcode signal processing circuit 110, audio data signal processing circuit 109, etc. in FIG. Further, an example of key operation is shown in FIG.

Each key operation will be explained below. In addition, Figures 12 to 17
The operation flowchart shown in FIG.
Or a part (subroutine) during which the CD control unit 102 executes a main operation flowchart that is not particularly illustrated.
is executed as

First, in the CD player section 100 of FIG.
When the No. 05 disc is set, its operation is detected by a microswitch (not shown) for disc set detection, and a detection signal is input to the CD control section 102. Thereby, the CD control section 102 rotates the disk motor 106 via the disk servo circuit 103. Then, only the TOC portion of the lead-in area (see 401 in FIG. 8) on the inner circumference of the CD 105 is read by the optical pickup 107, and the TOC data is extracted from the demodulation circuit 108 by the subcode signal processing circuit 110.
Zero or more operations stored as a cue table in the TOC memory 101 via the CD control unit 102 are stored in the 12th
S of the operation flow in the figure.

This is indicated by the processing of

Next, a case where the key operation shown in FIG. 18(a) is performed will be described. This is an example of an operation when performing a guide performance.

In this case, the musical instrument control unit 201 first presses "1" as the music designation key 2026 in FIG. By recognizing that 202y has been pressed, instruction data for reading the automatically performed music data of the first A-vert is transferred to the CD control unit 102.

Upon receiving this, the CD control unit 102 executes the operation flow shown in FIG. 13.

First, in S2, from the TOC data stored in the TOC memory 101 of FIG. 1 as shown in FIG.
The first frame number of Bart's subcode is read. Subsequently, the pickup servo circuit 104 is controlled,
Cueing is performed by moving the optical pickup 107 to the first frame position. This allows the CD
The automatically played music data 404+a of the first song A Bart recorded on the optical pickup 105 as shown in FIG.
7 is read by the subcode signal processing circuit 110 via the demodulation circuit 108.

Next, the automatically performed music data 4041A read as described above is transferred from the subcode signal processing circuit 110 to the musical instrument control section 201 at S.

Along with the above operation, the CD control unit 102 performs the following in S4:
The TOC data (FIG. 9) on the TOC memory 101 is accessed again and the first frame number of the minus A audio data of the first song is read.

As a result, the pickup servo circuit 104 is controlled and the optical pickup 107 is moved to the above-mentioned first frame position, thereby locating the beginning of the minus A audio data 4031A of the first track recorded as shown in FIG. As a result, the minus A audio data 4031A of the first song becomes ready for immediate playback.

As described above, the first
The musical instrument control section 201 shown in the figure executes the operation flow shown in FIG. 14.

First, in ss, the first program change message Pa of the automatic performance song data sent as shown in Figure 11 is executed, and the tone corresponding to the A part of the first song is changed as described above. It is specified. For example, a piano tone.

Next, at S, among the automatic performance music data sent as shown in FIG. 11, the data after the program change message po is stored in the automatic performance memory 2 shown in FIG.
12 is stored. As a result, the electronic keyboard instrument section 200
becomes ready for guide play.

Next, the musical instrument control unit 201 recognizes that the guide start key 2023 in FIG. 2 has been pressed to instruct guide performance as the key operation in FIG. 18(a), and executes the operation flow in FIG. Execute.

First, in S7, a flag FLGI indicating that automatic performance is in progress is selected.
is set to 1.

Next, at S, a CD playback instruction is given to the CD control section 102 of FIG. 1, and at the same time, a flag FLG2 indicating that the CD is being played is set to 1.

Upon receiving the above instruction, the CD control unit 102 performs the steps 5 in FIG.
4, the reproduction of the minus A audio data 403I^ (see FIG. 8) of the first song, which has been cued in advance, is started.

Subsequently, since FLGI is 1, the judgment of S in Fig. 15 is Y.
If the result is ES, the process proceeds to step 510 (described later in the case of No), and automatically performed music data following the tone length control command io shown in FIG. 11 is sequentially read out from the automatic performance memory 212.

If the read automatic performance music data is not a stop message (Fig. 11, 5tp), the determination in 511 will be No (YES will be described later), the program will proceed to S+z, and the summer music part A ( The guided performance of Piano Bart) is performed as described above.

Next, since FLG2 is 1, the determination in 514 is YES (the case of NO will be described later), and the process proceeds to S, 5. Here, it is determined whether a signal indicating that the reproduction of the negative audio data of the first song from the CD control unit 102 of FIG. 1 has been detected is detected. Initially, this judgment will be No, so Sl? Proceed to.

Sl? So, whether FLGI and FLG2 are both O or not,
That is, it is determined whether both guide performance and CD reproduction have ended. At first, this judgment is NO, so the process goes back to S and goes to Sl. The guide performance of ~SI□ is repeated.

In the above operation, Sl. , the stop message s in FIG. 11 is transferred from the automatic performance memory 212 in FIG.
When tp is read out, the determination in S becomes YES, and in the continuation <S13, the flag FLGI is reset to O, and the automatic performance ends. In this case, if the reproduction of the audio data in the CD player section 100 of FIG.
Sl? →S, -5+4 loop is repeated, CD
Only playback is performed. Then, the CD control section 1 in FIG.
When a signal indicating that the reproduction of the negative audio data of the first song from 02 is input, the determination at 515 becomes YES. This causes the first
A signal instructing the CD control unit 102 shown in the figure to stop CD driving is output, and the flag FLG2 is reset to O. Thereby, the CD control unit 102 controls the disc servo circuit 103 to stop driving the disc motor 106, and ends the CD playback. Next, FLGI, F
Since both LG2 became O, 51? Judgment is YES
Then, the control regarding guide performance and CD playback is ended.

On the other hand, before the stop message stp in FIG. 11 is read out from the automatic performance memory 212 in FIG. When the signal shown in FIG.
A drive instruction and an O reset of FLG2 are performed. Therefore, from now on, the determination in 514 becomes No, and sty→S,→S
The loop is repeated from 1°-5°→512-514→S17, and only the guide performance is performed. And S
l. When the aforementioned stop message stp is read in 513, FLGI is reset to O, and s+4→
The process proceeds to S1, and the determination of Sat becomes YES, and control regarding guide performance and CD playback is ended.

As described above, when the performer performs the key operations shown in FIG. 18(a), the CD player section 100 shown in FIG.
While the minus A audio data of the track is being played,
In synchronization with this, guided performance is executed by the LED 2023 above the key 2022 shown in FIG. 2 in the musical instrument operation section 202 shown in FIG. And the performer uses this LED2023
By operating and playing the corresponding 11202 z as shown, you can play the minus A of the first song.
Using audio data, for example, you can feel as if you are playing with an orchestra playing in the background.

Next, a case where the key operation shown in FIG. 18(b) is performed will be described. This is an example of an operation when performing automatic performance.

In this case, first, the musical instrument control unit 201 in FIG. 1 presses rlJ as the music designation key 2026 in FIG. By recognizing that the key is pressed and the data read key 2027 is subsequently pressed, instruction data for reading the automatically performed music data of the B part of the first song is transferred to the CD control section 102 in FIG.

Upon receiving this, the CD control unit 102 executes the operation flow shown in FIG. 13. As a result, as mentioned above, 1 in FIG.
The automatically performed music data 404+m for the B part of the music piece is read out and sent from the subcode signal processing circuit 110 to the instrument control unit 20.
1, the CD control unit 102 locates the beginning of the minus B audio data 403+m of the first track recorded as shown in FIG. 8, and the minus B audio data 403+++ of the first track becomes ready for immediate playback. .

On the other hand, the musical instrument control section 201 controls the subcode signal processing circuit 1
When the automatic performance music data 404 from 10 is received, the operation flow shown in FIG. become.

Subsequently, the musical instrument control unit 201 recognizes that the auto play start key 2029 in FIG. 2 has been pressed to instruct guide play as the key operation in FIG. 18(b).
Accordingly, the operation flow shown in FIG. 16 is executed. In this operation flow, the guide performance process of 512 in the operation flow chart of FIG.
The process is replaced by automatic performance of , and the other operations are the same as in FIG. 15.

As described above, when the performer performs the key operations (in FIG. 18), the first minus B audio data is played on the CD player section 100 in FIG.
In synchronization with this, the electronic keyboard instrument section 200 automatically performs the first B-vert (violin). As a result, it is possible to obtain a state in which an automatic performance is performed with, for example, an orchestral performance in the background based on the minus B audio data of the first song.

Next, a case where the key operation shown in FIG. 18(C) is performed will be described. With this key operation example, C in Fig.
Only the reproduction operation of the minus B audio data 4032B (see Figure 8) of the second song recorded in D105 is performed, and the guided performance or automatic performance is not performed. Therefore, the automatic performance music data of the subcode is also read. do not have.

In this case, the musical instrument control section 201 in FIG. 1 executes the operation flowchart shown in FIG. 17.

First, it is recognized that "2" was pressed as the music designation key 2026 in FIG. As a result, the instruction data for playing the minus B audio data of the second song in the CD player section 100 is changed to the first one.
The data is transferred to the CD control unit 102 shown in the figure. The above processing is executed in Sll+ in FIG. 17. C received this
The D control unit 102 accesses the TOC data (FIG. 9) on the TOC memory 101 and reads out the first frame number of the minus B audio data of the second song. As a result, the pickup servo circuit 1O4 is controlled and the optical pickup 107 is moved to the above-mentioned first frame position, thereby locating the beginning of the minus B audio data 403zm of the second song recorded as shown in FIG.

As a result, the minus B audio data of the second song is 40
3za becomes playable immediately.

Next, at S, a CD playback instruction is given to the CD control section 102 in FIG. Upon receiving the above instruction, the CD control unit 102 starts the minus B audio data 4 of the second song, which has been cued in advance based on the instruction in S.
0321 (see FIG. 8) starts playing.

Subsequently, at S8°, a state is entered in which a signal is detected from the CD control unit 102 indicating that the reproduction of the minus B audio data of the second song has been completed.

When the reproduction end signal is input manually from the CD control unit 102 in FIG. 1, the determination at 520 becomes YES. As a result, S
At Z+, a signal instructing the CD control unit 102 in FIG. 1 to stop the CD drive is output, and the control unit 102
The disk motor 1 is controlled by controlling the disk servo circuit 103.
06 is stopped and CD playback is ended.

Through the above-described playback operation, the performer operates the keys 2022 on the keyboard 2021 shown in FIG. 2 of the musical instrument operation section 202 in FIG. 1 to perform a performance with this CD playback sound in the background. In this case, by operating the tone designation key 202++ in FIG.
By setting , the performer can feel as if he or she is playing with a full orchestra in the background.

(Father-in-law of Hyakushi) As described above, in the embodiment shown in FIG. Although it functions as a PCM sound source, it is not limited to this, and various musical waveform generators such as a waveform modulation method, an overtone addition method, an overtone subtraction method, etc. can be applied.

In addition, the recording of the tone length control command in FIG.
This is done using an exclusive message in the DI standard, and in this case, a new CD-MI message is added to the ID part.
In addition to setting an ID for the Dr, for example, following the existing manufacturer ID, an identification flag for CD-M'lDI is added, and a tone length control command is added after that. You can.

On the other hand, in the above embodiment, the automatically performed music data and the audio data to be played in synchronization with the data are recorded on a CD and played back via a CD device (compact disk device). Any recording medium that can record data is not limited to CDs, but D
An AT (digital audio recorder) or the like may also be used.

In addition, in the above-mentioned embodiment, the audio data of a different minus one part (minus A, etc.) and the automatically played music data for that part were recorded in the L channel and the R channel, but not in the L channel and the R channel. The data of each part may be recorded at different time positions.

In addition, the automatically played music data is stored at a different time position in the audio data recording area, not in the subcode area.
The data may be recorded in a D-ROM recording format. In this case, the minus one-part audio data will also be recorded in the CD-ROM recording format.

〔Effect of the invention〕

According to the present invention, guide control data for displaying guides for performance operations and audio data to be played in response to the guide control data are mixedly stored in the same data storage means, and each data is read out from the same data storage means for performance. When displaying a guide for an operation, the guide display control means synchronizes the guide display operation on the guide display means and the audio data playback operation on the playback means. You can play compatible songs with simple operations.

In particular, after reading the guide control data into the temporary storage means in advance and locating the beginning of the audio data, the guide display of the performance operation on the guide display means and the playback of the audio data on the playback means are started in synchronization. By doing so, it becomes possible to reliably synchronize the timing of the start of the sound production of the music and the start of the guide display.

Furthermore, by using a compact disc as a data storage means and storing audio data in the audio data area and guide control data in the user's bit area of the subcode area, efficient data storage can be achieved.

In addition, if the leading part of the guide control data includes time control data for causing the guide display control means to adjust the timing of audio data playback and guide display, the part will be displayed after a certain period of time from the start of audio data playback. It is also possible to display a guide indicating the start of a performance at exactly the same timing.

Furthermore, when applied to an electronic musical instrument, if tone setting data for setting the tone is included at the beginning of the guide control data, the tone setting of the electronic instrument can be automatically performed before the guide display starts. can.

In addition, by storing audio data such as a minus one orchestral performance other than the piano part, and displaying a guide for the piano part as the audio data is played back, the performer can play according to the guide display. It is possible to obtain the effect of playing a piano part with an orchestra playing in the background.

In addition, since audio data can be recorded in stereo on compact discs, etc., different minus one part audio data can be stored in the left channel and right channel, and guide control data for each part corresponding to the subcode area can be stored. By storing the information, it becomes possible to enjoy playing the two instruments based on the guide display.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention. FIG. 2 is a configuration diagram of a musical instrument operating section. FIG. 3 is a configuration diagram of a frame. FIG. 4 is a configuration diagram of a subcode frame. is a packet configuration diagram of user's bits, FIG. 6 is a pack configuration diagram of user's bits, and FIG. 7 is a CD-MID
FIG. 8 is a diagram showing the contents of audio data and subcodes recorded on CD-MIDI, and FIG. 9 is a diagram showing the pack format of user's bits of TO.
FIG. 10 is a diagram showing MIDI messages, FIG. 11 is a diagram showing an example of automatically performed music data, FIG. 12 is an operation flowchart when setting a disc, and FIG. 13 is a diagram showing data. Figure 14 is an operational flowchart of read processing, Figure 14 is an operational flowchart of data storage processing, Figure 15 is an operational flowchart of guide performance processing, Figure 16 is an operational flowchart of auto play processing, and Figure 17 is minus one performance. Processing operation flowchart, FIGS. 18(a) to 18(C) are diagrams showing examples of key operations. 100...CD player section, 101...TOC memory, 102...CD control section, 103...disk servo circuit, 104...pickup servo circuit, 105...C
D (CD-MIDI), 106... Disc motor, 107... Optical pickup, 108... Demodulation circuit, 109... Audio data signal processing circuit, 110...
...Subcode signal processing circuit, 116.208...D
/A converter, 111, PF), 112, 113. 114. 115 ・ 200 ・ 201 ・ 202 ・ 203 ・ 204 ・ 205 ・ 206 ・ 207 ・ 212 ・ 213 ・ 214 ・ 209...Low pass filter/analog switch, lO...Amplifier, 11...Speaker, -Selection circuit,・Electronic keyboard instrument section, ・Instrument control section, ・Musical instrument operation section, ・Waveform memory, ・Scale control circuit, ・Tone control circuit, ・Envelope control circuit, ・Note on/off control circuit, ・Automatic performance memory, ・Timer Circuit, ・Guide lamp drive circuit. (L

Claims (1)

[Scope of Claims] 1) Guide display means for displaying a guide for musical instrument performance operations based on guide control data; playback means for playing back audio data representing a song; and a mixture of the audio data and guide control data. a data storage means for reading out the guide control data from the data storage means and causing the guide display means to display a guide for performance operations; and an operation for reading the audio data from the data storage means and performing the playback. A performance training device comprising: guide display control means that performs an operation of causing the means to reproduce the audio data in synchronization with the operation. 2) The guide display control means includes a temporary storage means for temporarily storing the guide control data, and the guide display control means transfers the guide control data to cause the guide display from the data storage means to the temporary storage means. and after locating the beginning of the audio data to be played back on the data storage means, synchronizing the display of a guide for performance operations on the guide display means and the playback of the audio data on the playback means. 2. The musical performance training apparatus according to claim 1, wherein the performance training device starts the performance operation by sequentially reading out the guide control data from the temporary storage means and sequentially displays a guide for performance operations on the guide display means. 3) The guide control data includes: display start instruction data that instructs the guide display means to start displaying a guide; time control data that controls a time period for causing the guide display means to display a guide; 3. The performance training device according to claim 1, further comprising display end instruction data that instructs the guide display means to end the guide display. 4) The leading part of the guide control data includes the time control data for adjusting the timing of the playback of the audio data and the display of the guide for the guide display control means. performance training device. 5) The display start instruction data is a note-on message in a MIDI message, and the display end instruction data is a note-off message in a MIDI message.
5. The performance training device according to claim 3, wherein the time control data is a message, and the time control data is defined using an exclusive message in a MIDI message. 6) The musical instrument is an electronic musical instrument in which an arbitrary tone can be set from a plurality of tones; 6. The performance training device according to claim 1, further comprising timbre setting data for setting a timbre for an electronic musical instrument. 7) The performance training device according to claim 6, wherein the tone color setting data is a program change message in a MIDI message. 8) The data storage means is a compact disc, the playback means is a compact disc player, the audio data is stored in an audio data area of a program area of the compact disc, and the guide control data is a program of the compact disc. Table of contents data is stored in the user's bit area of the subcode area of the compact disc, and table of contents data for locating each of the audio data and the guide control data stored in the compact disc is stored in the lead-in area of the compact disc. The musical performance training device according to any one of claims 1 to 7, characterized in that: 9) The table of contents data is data in which each of the audio data and the guide control data stored on the compact disc is associated with a number of a first frame of each data. The performance training device described. 10) The audio data is minus one data indicating a music piece of a performance part other than the predetermined performance part, and the guide control data is data for displaying a guide for performance operations of the predetermined performance part. The performance training device according to any one of claims 1 to 9. 11) In the left channel of the audio data area of the compact disc, the audio data, which is first minus one data indicating music of a performance part other than the first performance part, is stored, and in the right channel of the audio data area. stores the audio data which is second minus one data indicating the music of a performance part other than the second performance part, and the subcode area of the compact disc stores the audio data of the performance of the first and second performance parts. The musical performance training device according to any one of claims 6 to 9, wherein data for displaying an operation guide is stored.