JP2518190B2 - Automatic playing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic performance device for automatically performing music in accordance with music played on a recording medium such as a CD.

[0002]

2. Description of the Related Art In recent years, automatic performances using electronic musical instruments have become popular, but not only automatic performances but also music reproductions on music tapes and compact discs (hereinafter abbreviated as CD) are performed. If you can perform automatic music playing, for example, you can enjoy a more complex and diverse music by playing a minus one format orchestral CD without playing only a specific musical instrument and synchronizing the automatically playing musical instrument with it. be able to.

In this case, the automatic performance of the electronic musical instrument or the like can be synchronized by instructing the reproduction of the music and the start of the automatic performance at the same time. However, during the automatic performance, the playback speed of the music changes in tape recorders, etc., and in CDs etc., skipping occurs due to scratches on the CD disc, and the automatic performance and the music playback are synchronized. In some cases, it may not be possible.

In such a case, the conventional user operates the tempo operation key to make the tempo of the automatic performance catch up with or delay the reproduction of the music.

[0005]

However, in the above-mentioned conventional example, when the tempo of automatic performance is changed, the tempo can be adjusted at that moment, but after that, the deviation caused by changing the tempo increases. I will be going. Therefore, the tempo has to be restored again at an appropriate timing, and there is a problem that the operation becomes complicated.

An object of the present invention is to provide an automatic performance apparatus capable of stopping automatic performance and reproduction of a musical piece when the synchronization is deviated as described above, synchronizing the both, and then performing the automatic performance again. To provide.

[0007]

The present invention firstly has sound source means for producing a musical tone. The means is, for example, an electronic keyboard instrument, an electronic string instrument, an electronic wind instrument, or the like having a sound source such as a PCM system, a waveform modulation system, an overtone addition system, and an overtone subtraction system. Further, it may be an acoustic musical instrument or the like having a function of performing automatic performance based on automatic performance data. The sound source means may be connected to the outside of the main body via an interface such as MIDI. Here, the automatic performance data is data that is output from the musical instrument when the user plays an electronic musical instrument, for example, a weight that takes time timing such as key-on command and key data, key-off command and key data, key-on and key-off. It is an instruction and weight data, and an end instruction for instructing the end of automatic performance.

Next, there is a reproducing means for reproducing the audio data recorded on the recording medium while performing error correction. The means is, for example, a compact disc player, a digital audio tape recorder, or the like. The audio data in this case may be, for example, minus one data containing a music piece other than a specific performance part, or may be normal music piece data.

Further, there is provided position data reading means for sequentially reading position data indicating each timing of the audio data being reproduced recorded on the recording medium in synchronization with the reproduction operation of the audio data by the reproducing means. Here, the position data is time data indicating the elapsed time from the recording start time of the audio data recorded in the subcode of the compact disc player or the digital audio tape recorder described above, for example. The position data reading means is realized as, for example, a function of a part of the compact disc player or the digital audio tape recorder described above, and is a means for sequentially outputting time data corresponding to the reproduction of the audio data.

Subsequently, it has an automatic performance data storage means for storing the above-mentioned automatic performance data. In this case, the means indicates the timing of audio data to be reproduced by the reproducing means in synchronism with a predetermined automatic performance data of the above-mentioned automatic performance data, for example, an automatic key-on operation in the sound source means by a key-on command. The position data is stored together with the predetermined automatic performance data described above.

Further, it has the following synchronization resumption control means. When the performer plays along with the audio reproduced from the reproducing means such as a CD player, the reproducing means first mutes the reproduced sound when an error correction impossible state is detected by the reproducing means. For example, the first process of stopping the automatic performance operation of the sound source means such as the PCM system and waiting for the recovery from the error correction impossible state is performed.

Next, the same means, when the error correction impossible state is recovered in the reproducing means, the position data read from the position data reading means for reading the CD absolute time data by, for example, the subcode of the CD, On the basis of each position data stored in the automatic performance data storage means, a second process for restarting the automatic performance by the sound source means is performed in synchronization with the reproduction operation of the audio data by the reproduction means.

The means can be configured to perform the following two processes in the above-mentioned second process.
That is, first, at the timing when the error correction impossible state is recovered in the reproducing means, the reproducing means is caused to temporarily stop the reproduction of the audio data. next,
Position data that is equal to or greater than the position data value read from the position data reading means at that timing is searched on the automatic performance data storage means, and audio data from the timing of the searched position data (for example, the CD absolute time mentioned above). To the reproduction means, the automatic performance data stored in the automatic performance data storage means are sequentially read out from the predetermined automatic performance data corresponding to the searched position data, based on the instruction. Processing for causing the sound source means to restart the automatic performance.

[0014]

For example, when the music is automatically played in accordance with the audio reproduction of the CD or the like, and the CD reproduction is in an error correction impossible state, and the audio reproduction of the CD and the automatic performance are not synchronized, The synchronization resuming control means first mutes the sound of the audio being reproduced and stops the automatic performance.

Next, the means waits for the uncorrectable state of the CD to be recovered, and when it recovers, the absolute time of the CD indicating the position of the audio data at that time and the absolute time of the automatic performance data corresponding thereto. If both absolute time data are different from each other, the reproducing means and the automatic performance data storage means storing the automatic performance data are controlled so that both absolute time data become equal.

In this way, when both absolute time data become equal, it is possible to continue the automatic performance again in synchronization with the reproduction by the reproducing means.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. { Structure } FIG. 1 shows an electronic keyboard instrument according to one embodiment of the present invention.
It is a block diagram showing the whole circuit composition of an automatic performance device provided with a CD player.

In FIG. 1, the portion surrounded by the one-dot chain line 100 is the CD player section (hereinafter, the CD player section 100).
The portion surrounded by the alternate long and short dash line 200 is an electronic keyboard instrument section (hereinafter referred to as the electronic keyboard instrument section 200).

First, the block configuration of the CD player section 100 will be described. Reference numeral 105 denotes a CD, and a reproducing operation is performed by being set in a holder unit (not shown) of the CD player unit 100.

Next, reference numeral 102 denotes a CD operating section, the structure of which is shown in FIG. The reproduction switch 102 ₁ issues a CD reproduction instruction. The stop switch 102 ₂ gives an instruction to stop the CD reproduction. Numeric keypad 102 ₃ of "0" to "9", to specify the track number of the CD when performing a play.

Next, returning to FIG. 1, the CD control unit 103
Is a microprocessor, for example, which controls the entire CD player unit 100, and includes a subcode signal processing circuit 110, a musical instrument control unit 201, and a TOC memory 10.
Exchanges various data with 1st class. Also, CD1
At the time of driving 05, a drive control signal is output to the servo circuit 104.

The servo circuit 104 controls the number of rotations of the disk motor 106 that drives the CD 105 to rotate so that the linear velocity of each track of the CD 105 becomes constant.

The servo circuit 104 also performs focus servo and tracking servo of the optical pickup 107 which irradiates each track of the CD 105 with a laser beam. The focus servo detects the focus error from the state of the reflected light of the laser beam,
Based on the focus error, the optical pickup 107
The objective lens in the optical pickup is controlled and driven in the optical axis direction, and the tracking servo detects the deviation of the laser beam from the center of the track of the CD 105 while the optical pickup 107 is moved to the pickup feed motor 108. The optical pickup 107 itself to follow the track in response to a fast movement due to the eccentricity of the disc, etc., so that the laser beam emitted from the pickup can be accurately focused on the center of the track of the CD 105. It is controlled so that it is irradiated to.

Here, a projection called a pit is formed on the side of the CD 105 which is irradiated with the laser beam, so that a PCM signal (digital signal) is recorded. Then, the optical pickup 107 detects the presence or absence of a pit based on the amount of reflected light of the applied laser beam, and outputs an electric signal corresponding to the presence or absence of the pit and its length to the demodulation circuit 109.

The demodulation circuit 109 includes an optical pickup 107.
The sync signal is detected from the electric signal output from the device, the delimiter and order of each digital data (audio data and sub-code) described below are identified, and further modulated by a method called EFM modulation described below in each frame. 14-bit digital data (subcode, audio data, etc.) is demodulated and converted into 8-bit digital data.
Then, of the EFM-demodulated data, audio data is input to the audio data signal processing circuit 111 and subcodes are input to the subcode signal processing circuit 110. In general, it is not known at what probability the logic "1" and the logic "0" of each bit of digital data occur.
Then, when the optical pickup 107 of FIG. 1 detects digital data from the pits on the CD 105 as an electric signal, if one of logic “1” or “0” continues for a long time, a DC component is generated, and the bit interval is increased. Information is cut off.
Such a state causes a malfunction in the servo circuit 104 that performs a control operation based on the output of the optical pickup 107. Therefore, in order to remove such a direct current component as much as possible, data conversion is performed so that one of the logic "1" and "0" does not last long for consecutive bits of digital data to be recorded on the CD 105.
Recorded in 05. This is called EFM modulation. In this way, in order to reproduce the EFM modulated signal recorded on the CD 105 of FIG. 1, a demodulation process reverse to the above-mentioned modulation process may be performed, and this process is performed by the demodulation circuit 109.

Next, the audio data signal processing circuit 11
In the first example, the input audio data is written in an internal RAM (not shown), error correction processing is performed, and deinterleaving processing described later is performed, and then each sample of 16-bit digital audio data is sampled. D / A
Output to the converter 112. Here, the error correction is data that occurs when a digital data recorded on a CD is read by the optical pickup 107 due to a defect of a recording medium, a tracking shift of the optical pickup 107, or a focus defect. This is a process for correcting an error correctly, and is performed using an error correction code called a parity word (not shown) added to the digital data read from the CD 105. Further, in the audio data recorded in the continuous area on the CD 105, the samples of the audio data which are continuous in time are not recorded, but the order of each sample is dispersed in a random manner according to the method of cross interleaving. When recorded and played back, they are rearranged in the original order according to the same rules. In this process, a large data error is likely to be partially concentrated on a CD disc disk due to scratches, stains, and the like, and the error correction described above is simply performed by continuously recording / reproducing continuous audio data samples. Since it is often impossible to make corrections only by processing, the CD1 of audio data is cross-interleaved.
This is performed in order to disperse the concentrated errors on 05 at the time of reproduction and to easily perform the error correction by the parity word. As described above, the audio data signal processing circuit 111 reproduces the audio data recorded on the CD 105 by the cross interleaving by the de-interleaving processing which is a processing which is completely opposite to that at the time of recording.

A D / A converter 112 and an LPF (low pass filter) 113 having a cutoff frequency of 1/2 the sampling frequency convert input 16-bit digital audio data into a corresponding stereo analog signal, Sound is emitted to the outside through the amplifier 114 and the speaker 115.

The subcode signal processing circuit 110 receives the audio data signal processing circuit 11 for the subcode.
In the same manner as in 1, error detection and correction processing and de-interleaving processing are performed to restore the subcode. Here, as the digital data recorded on the CD 105,
In addition to audio data, there is control data called subcode. This subcode is read out in synchronization with the audio data.

The TOC memory 101 is a memory for storing TOC data which is read out when the disc of the CD 105 is set. Now, as shown in FIG. 5, the subcode of the area called the lead-in area at the innermost circumference of the CD 105 has a CD called TOC (Table of Contents).
The information corresponding to the table of contents of all the songs recorded on one sheet is recorded. This table-of-contents information is the song number data indicating each song number and the elapsed time from the start time T ₀ of the program area to the timing T ₁ , T ₂ , T ₃ ... , Frame number, and includes CD absolute time data having an accuracy of 1/75 second. And
When the CD 105 is set in the CD player section 100,
The CD control unit 103 controls the disc motor 106 and the optical pickup 107 via the servo circuit 104, and C
Access the lead-in area of D105. Furthermore,
The CD control unit 103 changes the TOC of the lead-in area to
The TOC memory 1 is read from the optical pickup 107 and the demodulation circuit 109 via the subcode signal processing circuit 110.
Store in 01. In this way, the stored TOC data is read and used by the CD control unit 103 as needed when the CD control unit 103 accesses the CD 105.

Next, the block configuration of the electronic keyboard instrument section 200 will be described. As shown in FIG. 3, the musical instrument operating section 202 has a keyboard 2021, a mode changeover switch 2022, a start switch 2023, and a stop switch 2024.

The musical instrument control unit 201 is, for example, a microprocessor, and in addition to a normal performance operation of the electronic keyboard musical instrument unit 200, an automatic performance data writing operation in a sequencer write mode described later and an automatic performance operation in a sequencer play mode described later. To control.

The tone generator 203 outputs a musical tone signal based on the performance data from the musical instrument control unit 201, and then the musical tone signal is input to the D / A converter 204.

A D / A converter 204 and an LPF (low-pass filter) 205 having a cut-off frequency of 1/2 the sampling frequency convert the digital musical tone signal from the tone generator 203 into an analog musical tone signal. Then, the converted output is emitted to the outside through the amplifier 206 and the speaker 207.

The timer circuit 209 is used to control the operation relating to the automatic performance and has the configuration shown in FIG. This configuration and operation will be described later. The operation of the embodiment having the above configuration will be sequentially described below. { Operation in Sequencer Write Mode } First, the operation in the sequencer write mode will be described. FIG. 7 is an operation flowchart showing the operation in this mode, and FIG. 6 is a view showing the data structure of the automatic performance memory 208, which will be described below with reference to these drawings.

The player first selects the sequencer write mode by the mode changeover switch 202 ₂ (FIG. 3) of the musical instrument operating section 202. Next, when the performer wants to reproduce the music on the CD 105 in synchronization with the automatic performance, the performer performs the following operation. That is, the player, by the numeric keypad 102 ₆ CD operation unit 102, and music selection music on CD105 you want to play in synchronization with the automatic performance, followed by advance press the play switch 102 ₁ (see FIG. 2).
At this time, the CD player section 100, CD controller 103 accesses the TOC memory 101, reads the track number data and the CD absolute time data of the music piece corresponding to the number of the numeric keypad 102 _6. Then, the CD control unit 103
Controls the optical pickup 107 via the servo circuit 104 and moves the optical pickup 107 to a position on the CD 105 corresponding to the above CD absolute time data. As a result, the music selection on the CD 105 is performed. The CD control unit 103 also outputs the CD absolute time data read from the TOC memory 101 to the musical instrument control unit 201. In this state, the audio data reproducing operation is not yet performed.

On the other hand, the performer synchronizes C with the automatic performance.
When it is not necessary to reproduce the music on D105, the above-described operation on the CD operation unit 102 is not performed.
After the above operation, the CD control unit 103 starts the operation flowchart of FIG.

First, in S701, the musical instrument operating unit 20
It is monitored whether or not the second start switch 202 ₃ is pressed. When the start switch 202 ₃ is pressed, then in S702, whether or not pre-playback switch 102 ₁ of CD operation unit 102 is pressed is determined.

The performer synchronizes the CD 10 with the automatic performance.
In order to reproduce the music on the No. 5, the reproduction switch 10
When 2 ₁ is pressed in advance, the determination in S702 is YES, and the process proceeds to S703.

In step S703, the CD start command C _TP is written in the memory address 1 of the automatic performance memory 208 as shown in FIG. Similarly, at memory address 2, C
CD absolute time data D indicating the beginning of a music piece to be reproduced in synchronization with the automatic performance sent from the D control unit 103
_AT is written as shown in FIG. Further, the CD reproduction command C _PY is also written in the memory address 3 as shown in FIG. These functions will be described later.

Next, in S704, the CD control unit 10
A CD playback command is issued to 3. This makes the CD
In the player unit 100, the CD control unit 103 drives the disc motor 106 via the servo circuit 104. As a result, the audio data of the music selected by the performer in advance is selected by the optical pickup 107,
Demodulation circuit 109 and audio data signal processing circuit 11
D / A converter 1 read from CD 105 via
12 is reproduced from the speaker 115 via the LPF 113 and the amplifier 114.

The player plays the CD thus reproduced.
The keyboard 20 of the musical instrument operating unit 202 in accordance with the 105 songs
Perform at 2 ₁ . As a result, S705 → S706 →
Every time the processing of S705 is executed in the repeating operation of S707 → S705, the performance data input from the keyboard 202 ₁ is sequentially written in the automatic performance memory 208 as sequence data as shown in FIG. As the sequence data, as shown in FIG. 6, there are a wait command C _WT and wait data D _WT , a key-on command C _ON and key data D _KY , a key-off command C _OF and key data D _KY , and a CD absolute time data D _AT .

In FIG. 6, a wait instruction C_WTIs the way
Data D_WTExecution of the next performance data for the time indicated by
Wait data, and wait data D_WTFigure 1 or
It is generated in the timer circuit 209 of FIG. Someday
Each time a performance operation is performed,
OR circuit 209 of 4_FiveVia the timer counter 209
₂The reset signal RST is input to the
Is set. After this, the timer counter 209₂Is
Reference clock generator 209₁According to the clock from
Is counted up. Then, the musical instrument control unit 201
Is the timer counter 20 when the next performance data is input.
9₂Count output of wait data D _WTCaptured as
Write to the automatic performance memory 208 and reset again
Timer counter 209 by signal RST₂Reset
I do. With the above operation, one performance operation to the next
Time until work is measured, weight data D_WTAs self
It is stored in the dynamic performance memory 208. Here, note of Figure 6
Readdress 4 wait instruction C_WTAnd weight data D
_WTIs the start switch 2 of the musical instrument operating unit 202
02₃Indicates the time until the first key operation is performed after pressing.
are doing.

Next, the key-on command C _ON is the key data D.
_This is a command for instructing the start of pronunciation of a musical tone of the pitch indicated by _KY . On the contrary, the key-off command C _OF is a command to stop the sound generation of the musical tone of the pitch indicated by the key data D _KY .

Further, the CD control unit 103 receives the CD absolute time data D _AT detected from the CD 105 at that time each time the key-on operation of the key is performed, and follows the key-on command C _ON . Write to the memory address next to the key data D _KY . As a result, the timing of the music being reproduced by the CD player unit 100 at each key-on operation is recorded in the automatic performance memory 208.

When the performer presses the stop switch 202 ₄ (FIG. 3) of the musical instrument operating section 202, it is detected in S707 and the end command C _E is written in the automatic performance memory 208 in S708 as shown in FIG. Exit the sequencer write mode.

When the sequence data is written up to the last memory address of the automatic performance memory 208 during the performance, the determination in S706 becomes YES and the sequencer write mode is forcibly ended.

In response to the above operation, the performer automatically performs
It is necessary to make the music on the CD 105 play in synchronization with
Playback switch 102 because there is no₁Don't press in advance
If not, the determination in S702 is NO. This gives C
D Cue command C_TP, CD absolute time data indicating the beginning of the song
D_ATAnd CD playback command C_PYIs written in the automatic performance memory 208
It is played back to the CD player section 100 without being cut in.
No instructions are given. Then, jump to the processing of S705
And write the sequence data to the automatic performance memory 208.
Only the operation to execute is executed. In S705, the above-mentioned
Key-on command C _ONCD absolute time data D for each_ATAutomatic performance
Writing to the performance memory 208 is also not performed. This behavior
Is an electronic musical instrument with an automatic performance function, which is a conventional example.
It corresponds to the writing operation of dynamic performance data. {Sequencer play mode operation} After the automatic performance data writing operation described above,
The operation for creating a work will be described.

The player selects the sequencer play mode by the mode changeover switch 202 ₂ of the musical instrument operating section 202. As a result, the musical instrument control section 201 executes the operation flowchart of FIG.

First, in S801, the player waits for the start switch 202 ₃ of the musical instrument operating section 202 to be pressed. Next, in step S802, the CD reproduction command C is stored in the same memory.
It is determined whether or not _PY (see FIG. 6) is stored.

In the sequencer write mode described above,
When the performer writes the sequence data to the automatic performance memory 208 after previously pressing the reproduction switch 102 ₁ in order to reproduce the music on the CD 105 in synchronization with the automatic performance, the automatic performance memory 208 A CD playback command C _PY is stored in the memory address 3 of FIG. Therefore, in such a case, the determination in S802 is YES. As a result, in S803,
The CD control unit 103 is instructed to reproduce the music of the CD 105. In this case, the CD absolute time data D _AT corresponding to the beginning of the song is read from the next memory address of the automatic performance memory 208 and transferred to the CD control unit 103, so that the CD control unit 103 can read the corresponding song. Playback starts from the beginning.

On the other hand, in the above-mentioned sequencer write mode, since the performer does not need to reproduce the music on the CD 105 in synchronization with the automatic performance, the sequence data is automatically reproduced without pressing the reproduction switch 102 _1. When the writing operation to the performance memory 208 is performed, the CD reproduction command C _PY is not stored in the automatic performance memory 208.
Therefore, in such a case, the determination in S802 is NO. In this case, since it is not necessary to reproduce the music on the CD 105 during the automatic performance, the CD reproduction command of S803 is not executed.

As described above, the CD player unit 1
After a playback command is issued to 00, S804 → S80
Every time the process of S604 is executed by repeating 5 → S806 → S804, the memory address of the automatic performance memory 208 is sequentially incremented from the address next to the CD reproduction command C _PY and the CD absolute time data D _AT of FIG. Meanwhile, the sequence data is read from each memory address, and the automatic performance operation is executed according to the contents. The increment operation in this case is executed based on the operation of the timer circuit 209 described later.

Here, for example, when the musical instrument control section 201 reads out, for example, a key-on command C _ON from the automatic performance memory 208, the next key data D _KY is further read out, and the corresponding tone pitch to the tone generator 203 is read. To instruct the start of musical sound production.

On the contrary, the musical instrument control unit 201 causes the automatic performance memo.
From key 208, for example, key-off command C _OFIf you read
Key data D_KYRead the tone
Music that is sounding at the corresponding pitch for the generator 203
Instruct to mute the sound.

Further, an address on the automatic performance memory 208
The increment operation of is realized as follows.
That is, the musical instrument control unit 201 is, for example, an automatic performance memory.
Wait command C from 208_WTIf you read
Next weight data D_WTRead,
Weight counter 209 in timer circuit 209₃Niso
Set the data of. Along with this, the timer circuit 20
In step 9, as described later,
Timer counter 209 at the timing of ₂Is lycee
Is set. Then, the weight data D_WTIs the way
Counter 209₃, And at the same time the timer of FIG.
Output the count enable signal ENBL to the circuit 209
After that, the timer counter 209 of FIG.₂Based on
Quasi-clock generator 209₁According to the clock from
And start counting up. These timer coun
209₂Output and weight counter 209₃Set to
Weight data D_WTThe contents of the match circuit 209
_FourAre compared in. And their contents match
The matching circuit 209_FourA belief that matches from
Is output as the address increment signal INC
You. This signal is output to the instrument control unit 201,
Therefore, the musical instrument control unit 201 can read the data from the automatic performance memory 208.
The address for reading the data is incremented. Ma
In addition, in the timer circuit 209 of FIG.
The increment signal INC is supplied to the OR circuit 209._FiveThrough
Immersion counter 209₂And reset the way
Register 209₃To reset the next weight data
D_WTTo prepare for processing. With the above operation, a certain performance
The timing from one playing operation to the next performance operation is measured,
Dynamic performance is realized.

The above-mentioned automatic performance operation is performed when the sequence data is read up to the final memory address of the automatic performance memory 208 during the automatic performance, or when the performer stops the switch 202 ₄ (FIG. 3) of the musical instrument operating section 202. If any of the buttons is pressed, they are detected in S806 or S807, and the process ends.

In the automatic performance operation based on the repetition of the processing of S805 to S807 described above, for example, due to scratches, stains, vibrations, etc. on the CD 105, the music being reproduced causes skipping, and the music is automatically reproduced. When the performance and the performance are not synchronized, the synchronization can be automatically restored as follows. This operation is an operation particularly relevant to the present invention.

That is, as described above, when the error correction becomes impossible in the audio data processing circuit 111 during the automatic performance for the above-mentioned reason, the processing circuit via the CD control unit 103 causes the musical instrument control unit. 201 is notified, the program being executed corresponding to the operation flowchart of the sequencer play mode of FIG. 8 is interrupted, the processing is interrupted, and the program corresponding to the operation flowchart of FIG. 9 is executed.

First, in S901, the musical instrument control unit 20
1 controls the audio data signal processing circuit 111 via the CD control unit 103.
Muting the playback sound of 5 to mute it.

Subsequently, the musical instrument control section 201 stops the automatic performance in S902. Next, in step S903, the musical instrument control unit 201 monitors the audio data signal processing circuit 111 via the CD control unit 103, and the CD 105
Wait until the error uncorrectable state is recovered and if the determination is YES, the process proceeds to the next step S904.

In step S904, the CD control unit 103 is instructed to suspend the reproduction operation of the CD 105. Then, in step S905, the CD absolute time data of the current CD 105 and the CD absolute time data corresponding to each key-on command in the automatic performance memory 208 are compared while sequentially incrementing the memory address.

As a result of the comparison, if the value of the CD absolute time data detected from the CD side is larger than the value of the CD absolute time data in the automatic performance memory 208, both absolute times are equal or larger. Wait, and if equal, proceed to the next S907. Also, the CD detected from the CD side
C of the automatic performance memory 208 from the absolute time data value of
If the value of the D absolute time data is large, the CD absolute time data in the automatic performance memory 208 is set to C in S906.
The CD absolute time data is sent to the D control unit 103 and the CD
Cue 105.

As described above, when the CD absolute time data of the CD 105 and the CD absolute time data of the automatic performance memory 208 become equal to each other, in step S907, the CD control unit 103 is instructed to start the reproduction of the CD 105 again. In step S908, automatic performance is started. Then, after the above interrupt processing, the processing immediately returns to the interrupted processing of the program corresponding to the operation flowchart of FIG. 8, and the operation of the sequencer play mode described above is continued. { Other Embodiments } In the embodiments described above, the player plays the keyboard 202 ₁ (FIG. 3) in advance in the sequencer write mode in accordance with the reproduction of the music of the CD 105, and writes the sequence data in the automatic performance memory 208. However, the present invention is not limited to this, and the sequence data is stored in advance in the user's bit of the subcode of the ROM card or the CD, and the sequence data is transferred to the automatic performance memory 208 during the automatic performance. You may Here, the format, type, etc. of the stored sequence data can be arbitrarily changed according to the musical instrument to be played automatically.

Naturally, various music reproducing devices can be applied in addition to the CD player. Further, although the musical instrument to be automatically played has been described using the electronic keyboard musical instrument in the above-mentioned embodiment, the musical instrument is not limited to this and may be an electronic musical instrument such as an electronic wind instrument or an electronic guitar which does not use the keyboard.

The above-mentioned automatic musical instrument is not limited to an electronic musical instrument, and a conventional acoustic musical instrument, for example, a piano, can be used in advance with a sensor to store musical performance data such as pitch data and velocity data. In memory, read it out and
By pressing a key with a solenoid or the like, it is possible to automatically play a piano part in accordance with, for example, a minus one CD, and to play a piano concerto with a feeling close to a live performance.

[0066]

According to the present invention, when the automatic performance based on the automatic performance data created by the performer is being performed in accordance with the reproduction of the music such as the CD, the error of the CD cannot be corrected. Even if the data becomes unreadable and as a result, the CD playback cannot be synchronized with the automatic performance, as soon as the error correction cannot be recovered, no user operation is required and the synchronization is automatically performed. You can take it back and continue the ensemble of both parties.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an embodiment of the present invention.

FIG. 2 is a configuration diagram of a CD operating unit.

FIG. 3 is a configuration diagram of a musical instrument operating unit.

FIG. 4 is a configuration diagram of a timer circuit.

FIG. 5 is an explanatory diagram regarding TOC.

FIG. 6 is a data configuration diagram of an automatic performance memory.

FIG. 7 is an operation flowchart of a sequencer write mode.

FIG. 8 is an operation flowchart of a sequencer play mode.

FIG. 9 is an operation flowchart when error correction is impossible.

[Explanation of symbols]

 100 CD player section 101 TOC memory 102 CD operating section 103 CD control section 104 Servo circuit 105 CD 106 Disk motor 107 Optical pickup 108 Pickup feed motor 109 Demodulation circuit 110 Subcode signal processing circuit 111 Audio data signal processing circuit 112 D / A converter 113 low-pass filter (LPF) 114 amplifier 115 speaker 200 electronic keyboard musical instrument section 201 musical instrument control section 202 musical instrument operating section 203 tone generator 204 D / A converter 205 low-pass filter (LPF) 206 amplifier 207 speaker 208 automatic performance memory 209 timer circuit

Claims (2)

(57) [Claims] 1. A sound source means for automatically performing performance based on automatic performance data, a reproducing means for reproducing the audio data recorded on a recording medium while performing error correction, and the audio by the reproducing means. Position data reading means for sequentially reading position data indicating each timing of the audio data being reproduced recorded on the recording medium in synchronization with a data reproducing operation, and storing the automatic performance data. , The position data indicating the timing of the audio data to be reproduced by the reproducing means in synchronization with the automatic performance of the sound source means by the predetermined automatic performance data among the automatic performance data. And an automatic performance data storage means to be stored together, when an error correction impossible state is detected from the reproduction means, The first process of muting the reproduced sound of the reproduction means, stopping the automatic performance operation of the sound source means, and waiting for the recovery of the error correction impossible state, and the time when the error correction impossible state of the reproduction means is recovered, Based on the position data read from the position data reading means and each position data stored in the automatic performance data storage means, the sound source means synchronizes with the reproducing operation of the audio data in the reproducing means. An automatic performance device comprising: a synchronous restart control means for performing a second process for restarting an automatic performance. 2. The second in the synchronization restart control means
The process of is a process of temporarily stopping the reproduction of the audio data by the reproduction device at the timing when the error correction impossible state is recovered by the reproduction device, and a process of the position data read from the position data reading device at the timing. The automatic performance data storage means is searched for position data equal to or more than a value, the reproduction means is instructed to start reproduction of the audio data from the timing of the searched position data, and the reproduction operation is performed in synchronization with the instruction operation. A process of sequentially reading the automatic performance data stored in the automatic performance data storage means from the predetermined automatic performance data corresponding to the searched position data, and causing the sound source means to restart the automatic performance based on the data. The automatic musical instrument according to claim 1, wherein