JPH04199193A - Automatic performance device - Google Patents

Abstract

PURPOSE:To facilitate the automatic performance of a musical instrument synchronized with an audio data reproducing operation by recording the reproduction timing information of audio data in an automatic performance memory and controlling the reproduction start timing of the automatic performance at the time of reproduction. CONSTITUTION:A player firsts sets a memory mode. The desired music of a CD 105 is reproduced in a CD player section 100. The player operates a keyboard 202c in the same manner as actual performance in synchronization with the reproduced music and operates a musical instrument control section 201 to successively store the performance, etc., as automatic performance data, into an automatic performance memory 208. The music of the CD 105 produced in the back at the time of the storage is automatically selected and the reproduction of the music of the CD is started when the start of the automatic performance is instructed. The automatic performance is thus started at the same timing at which the performance is started at the time of the storage. A remote control section 300 allows the reproduction instruction of the audio data, music selection operation, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic performance device that performs automatic performance in accordance with music played from a recording medium such as a CD or DAT.

[Prior Art] Recently, automatic performance using electronic musical instruments has become popular. If automatic performance can be performed, for example, by playing an orchestral CD in the minus one format and synchronizing a self-playing piano with it, you can enjoy more complex and diverse music.

However, it is difficult for beginners in particular to find the timing to start automatic performance in the music being played, and there is a problem in that there is a high possibility that the playback sound will be out of sync with the playback sound.

As a solution to this problem, the automatic performance sequence data can be
As data according to IDI, a special time code, for example, minute/second/frame information according to a MIDI quarter frame message, is stored in this MIDI data,
A method has been considered in which this time code is sequentially read out to synchronize with the CD.

However, with this method, the memory capacity for automatic performance increases,
Furthermore, since the circuit configuration has the disadvantage of being complicated, the applicant of the present invention has proposed the following automatic performance device in Japanese Patent Application No. 228678.

In other words, in this automatic performance device, when creating automatic performance data and transmitting and receiving various digital data necessary for synchronized performance between an electronic musical instrument and a CD player, etc. during automatic performance, recording of CDs etc. By using subcodes of the medium, it is possible to perform automatic performance in complete synchronization with the playback of audio data such as music with a simple configuration.

[Problem to be solved by the invention]

However, since the above proposal integrates an audio playback device such as a CD player and an electronic musical instrument that automatically plays, for example, even if the user already has a playback device such as a regular home CD player, the above proposal will not work. There is a need for either an integrated automatic performance device such as this, or a dedicated audio playback device that can perform synchronized playback with the automatic performance of an electronic musical instrument.

An object of the present invention is to realize an automatic performance device that can be used without any modification to an ordinary home-use audio playback device such as a CD player, and can be combined with an electronic musical instrument or the like to reliably synchronize with the audio playback device. It is in.

[Means to solve the problem]

The present invention records performance data inputted from a built-in performance operation unit or an external electronic musical instrument or acoustic musical instrument connected via MIDI, etc., in an automatic performance memory together with its input timing information as automatic performance data. The present invention assumes an automatic performance device that reproduces automatic performance data at the same timing as when it is input and causes a musical instrument to perform automatic performance. The performance data is data output from the musical instrument when a performer plays an electronic musical instrument, for example, data regarding pitch, pitch, velocity-1, tone color, and the like.

Next, it receives song selection information such as track numbers and playback timing information such as relative time data sent from a general-purpose CD playback device or an audio data playback device such as a DAT connected via a digital audio interface. It has digital input means.

The apparatus also includes remote control transmitting means for transmitting at least music selection information and reproduction start instruction information to the above-mentioned audio data reproduction apparatus connected via a remote control device such as an infrared remote control.

Next, it has recording control means for recording music selection information and playback timing information inputted from the digital input means into the automatic performance memory at the time of starting automatic performance recording. The means records, for example, relative time data and track number data based on a CD subcode, which are input into the digital input means at the time when the performer starts playing, into the automatic performance memory.

Furthermore, at the start of automatic performance playback, the remote control transmission means transmits the playback start information and the song selection information read from the automatic performance memory, and then the playback timing information read from the automatic performance memory and the playback input from the digital input means are transmitted. The playback control means compares the playback timing information with the playback timing information, and starts reading out the automatic performance data from the automatic performance memory when both pieces of playback timing information match.

In the configuration of the present invention described above, the song selection information may be omitted; in this case, the user manually selects a song on the audio data reproducing device at the start of automatic performance recording or automatic performance playback.

Further, in addition to the configuration of the present invention up to this point, a model setting means for setting the model of the audio data reproducing device is further provided, and the remote control transmitting means described above is set in the model setting means together with the playback start instruction information or the song selection information. It is also possible to configure the set model setting information to be sent to the audio playback device.

C Effect] In the present invention, the automatic performance memory is provided with playback cuming information (
By recording time data) and using the playback timing information during automatic performance playback to control the playback start timing of the automatic performance, it is possible to automatically perform the instrument in synchronization with the audio data playback operation of the audio data playback device. becomes. In this case, the present invention has a particularly significant feature in that there is no need to prepare an audio data reproducing device developed exclusively for automatic performance synchronization.

In other words, the automatic performance device is provided with digital input means, which is a receiving circuit for the digital audio interface, which is becoming standard equipment in audio data reproducing devices such as CD players and DATs, which are becoming increasingly sophisticated. By connecting to an audio playback device via the CD player, it is possible to input playback timing information from a general-purpose CD player or the like, thereby enabling the above-mentioned synchronized automatic performance.

Furthermore, in the present invention, a remote control transmitting means, which is a transmitting circuit of a remote control device such as an infrared remote control, which is becoming standard equipment in audio data reproducing devices, is provided, and the remote control transmitting means is provided, which instructs the audio data reproducing device to start playback, Furthermore, by making it possible to transmit music selection information, it becomes possible to issue an instruction to start playing audio data and perform music selection operations from the automatic performance apparatus side.

In addition, by making it possible to set the model when sending a remote control signal, it becomes possible to support many models of audio data playback devices from many manufacturers.

〔Example〕

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

(Seal - One Bottom) FIG. 1 shows an entire automatic performance device including an electronic keyboard instrument section and a remote control section (hereinafter referred to as the remote control section), and a CD player section, which is an embodiment of the present invention. FIG. 2 is a block diagram showing a typical circuit configuration. Figure 2 shows its appearance.

In FIG. 1, the area surrounded by a dashed line 100 is the CD
The player part, the part surrounded by a chain line 200 is an electronic keyboard instrument part, and the part surrounded by a chain line wA300 is a remote control part.

These CD player section 100, electronic keyboard instrument section 200
The appearance of the remote control unit 300 is shown in FIG. 2. Among these, the remote control unit 300 is used as a special accessory for the electronic keyboard instrument unit 200, but the CD player unit 100 is a special accessory. Instead, a normal home CD player is used. This CD player section 100 is connected to the electronic keyboard instrument section 200 via a digital output image Ia 117 based on the digital audio interface standard established by the Electronics Industries Association of Japan (EIAJ).
connected by a cord. Incidentally, many CD players currently on the market are being equipped with this digital audio interface.

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

Part of the holder of the CD player section 100 (not specifically shown)
A CD (compact disc) 105 is set. In this embodiment, a particularly suitable CD is a CD on which songs are recorded in minus one format. This minus one format CD refers to a CD on which audio data such as a piano concerto excluding the piano part is recorded.

TOC memory 101 stores CD 105 in CD player section 1.
TOC (Tab) of Content in the lead-in area that is automatically read when set to 00.
s) A memory that stores data. T.

The C data will be described later.

The CD operation unit 102, as shown in FIG.
Switches such as play (play) and stop (stop) provided on the player, - pause for time stop (P
ause) switch, a song selection switch using a numeric keypad to directly select any song, etc.

The CDfflJllll unit 103 is, for example, a microprocessor, and controls the entire CD player unit lOO. This CD control section 103 is a subcode signal processing circuit 11
0, CD operation section 102, musical instrument control section 201, and TO
It exchanges various data with the C memory 101 and the like.

Further, the CD control section 103 outputs a drive control signal to the servo control circuit 104 when driving the CD 105.

The digital output circuit 117 is an output circuit of a digital audio interface, which will be described later.
A digital signal output from the electronic keyboard instrument section 200 is sent to the electronic keyboard instrument section 200, and sent to the musical instrument control section 201 via the digital input circuit 210 on the instrument side.

The remote control receiving section 119 receives a remote control signal transmitted from the remote control transmitter attached to the CD player or the transmitting section 303 of the remote control section 300 connected to the electronic keyboard instrument section 200. The remote control signal is the CD track number (
It is an infrared signal that is PPM-modulated as will be described later, and includes key codes related to the song number), playback start command, etc. This signal is output to the key code input section 118. The key code input circuit 118 demodulates the above-mentioned key code and uses the key code to specify a track number, a playback star, etc.
Tameni performing DIIJI, CD IIJ? 1] eB 1
Output to 03.

The servo control circuit 104 controls the rotation speed of the disk motor 106 that rotationally drives the CD I O 3, and adjusts the linear velocity of the track of the CD I O 5.
The drive is controlled so that the velocity (velocity) is constant.

The circuit 104 also performs focus servo and tracking servo for the optical pink amplifier 107 that irradiates the tracks of the CD 105 with a laser beam. The focus servo described above is a control that detects a focus error from the state of the reflected light of the laser beam and controls and drives the objective lens in the optical pickup 107 in the optical axis direction based on the focus error. In addition, the tracking servo detects the deviation of the laser beam from the center of the track of the CD 105 while moving the optical pickup 107.
is moved in the radial direction by the pink-up feed motor 108. Also, in case of slight deviation due to eccentricity of the disk, the lens itself inside the optical pickup 107 is moved to follow the track. The irradiated laser beam is CD105
(7) A servo that controls the irradiation so that it is irradiated accurately to the center of the track.

A protrusion called a bit is engraved on the surface of the CD105 that is irradiated with the laser beam, and by using this bit, P CM (Pause CodeMo
duration) signal is recorded. The optical pickup 107 detects the presence or absence of a bit based on the amount of reflected light from the irradiated laser beam, and outputs an electrical signal to the demodulation circuit 109 corresponding to the presence or absence of the bit and its length.

The demodulation circuit 109 detects a frame synchronization signal from the electrical signal output from the optical pickup 107, identifies the break between each symbol word, and further identifies the EFM within each frame.
Modulation (Eight to FourteenModul
The 14-bit symbol word that has been converted into an 8-bit symbol word is subjected to EFM demodulation. Of the EFM demodulated symbol words,
The symbol word containing audio data is output to the audio data signal processing circuit 111, and the symbol word containing the subcode is output to the subcode signal processing circuit 110.

The audio data signal processing circuit 111 writes the input audio data to the RAM 116 and reads/writes it.
Based on the Solomon code, error correction processing and deinterleaving processing are performed, and 1
Restoring 6-bit digital audio data. Then, this digital audio data is transferred to the D/A converter 11.
Output to 2.

The D/A converter 112 converts input digital audio data into an analog audio signal and outputs the analog audio signal. This analog audio signal is applied to an amplifier 114 and a speaker 115 via an LPF (low pass filter) 113 having a cant-off frequency that is 1/2 of the sampling frequency, and is emitted to the outside.

The subcode signal processing circuit 110 performs error detection and correction processing, as well as deinterleaving processing, on the 8-bit subcode to restore the subcode. Then, two control bits, P and Q, of the restored subcode are output to the CD811711 section 103. Note that the control bits P and Q will be explained in detail later.

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

As shown in FIG. 1, the musical instrument operating section 202 is provided with a mode switch 202a, a start switch 202b, a performance keyboard 2020, and the like. This mode switch 202a is a storage mode (described later) for writing automatic performance data (described later) necessary for automatic performance.
mode switch ON state) and a play mode (mode switch OFF state) in which the automatic performance data is read and automatic performance is performed or normal keyboard performance is performed.

Further, the start switch 202b is a switch for instructing the start of automatic performance.

The musical instrument control section 201 is, for example, a microprocessor, and monitors the operating states of various keys and the like of the musical instrument operating section 202 at predetermined time intervals. In the storage mode, automatic performance data such as pitch data and tone length data obtained from the keyboard 202c that are pressed during performance, or tone data specified by a tone specifying switch (not shown) is stored from the RAM. It is stored in the automatic performance memory 208. Furthermore, in the play mode, performance data obtained from the keyboard 202c is sent directly to the tone generator 203. When the start switch 202b is operated in the play mode, automatic performance data read from the automatic performance memory 208 is sent to the tone generator 203 as performance data.

Tone generator 203 generates musical tone signals based on the above-mentioned performance data. This musical tone signal is sent to the D/A converter 204.

D/A converter 204 and LPF (low pass filter)
205 converts the musical tone signal into an analog waveform signal.

Then, the converted output is sent to the amplifier 2O6 and the speaker 2
The sound is emitted to the outside via 07.

Although not specifically shown, the timer circuit 209 includes a time counter, a pitcher for tone length data, a comparison circuit, etc., and reads automatic performance data from the automatic performance memory 208 to perform automatic performance. This is a circuit that measures the time corresponding to note length data.

The key code output circuit 211 outputs track number data (
The following key code is output corresponding to the track number data). That is, this key code is a song number code corresponding to the track number data and a playback code for playing back the song of that song number.

This key code is input to key code conversion section 301. The conversion unit 301 takes in information on the manufacturer name and model (CD player in this embodiment) using the manufacturer specification key 302 as shown in FIG. 12, and converts the input song number code and In addition to converting the playback code into a code format that corresponds to the manufacturer and model, it also converts the remote control signal into a PPM modulated remote control signal with a code system that corresponds to the order of key operations when selecting music for that model. The signal is transmitted from a transmitter 303 made of a light emitting diode.

Here, the principle of an infrared remote control will be explained.

Each command sent from the remote controller 300 is "1" and "0".
" is sent as binary digital data, and pulse position modulation (PPM) is usually used to modulate that data.

In this pulse position modulation, the pulse width is constant, and "1" and "
This is a modulation method that changes the pulse interval depending on the value of 0.

Now, for some reason, the data transmitted by the remote control may not arrive. Therefore, in order to prevent malfunctions due to such situations, a function for detecting data errors is required.

A method of sending data multiple times is usually used to detect errors in remote control.

An example of a remote control signal is shown in FIG.

The reader code is used to notify the receiving side that remote control data is about to be transmitted. The next custom code is a code determined for each manufacturer and device, and the receiving side uses this code to determine whether the command is for its own model. The data code is a code that corresponds to the pressed key, and the receiving side uses this code to determine what action to perform. The custom code and data code are each followed by an inverted code, which is used to detect errors.

For example, if the model set by the manufacturer specified key 302 is a device that plays the third song by operating the switch '3J, 'PLAY, 1', the key code conversion unit 301 corresponds to the input key codes in the same order. Outputs a remote control signal to

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

As shown in Fig. 3, digital data is recorded in units called frames, and each frame has a sync pattern (sync pattern) of 24 channel bits, 301.1 symbols, and a subcode of 302.12 symbols, in order from the beginning. A parity word 304 for 303.4 symbols of audio data, 305.5 symbols of audio data for 12 symbols, and a parity word 306 for 4 symbols are arranged.

Then, in the data string in the above frame format, EFM
Before modulation, one symbol in FIG. 3 consists of 8-bit data. On the other hand, CD1
The audio data to be recorded in 0.05 is digital data in which each sample is sampled at 44.1 KHz and quantized at 16 bits. Therefore, one sample is represented by two symbols. As described above, a total of 24 symbols of audio data 303, 305 are recorded in one frame in FIG. 3, so a total of 12 samples of audio data are recorded in one frame. Also, parity words 304.306 are CI
This is a parity word called Rc (cross-interleaved Reed-Solomon code).

FIG. 4 shows a data format centered on the subcode 302. 8-bit subcode 3 per frame
Each bit of 02 is P,Q.

They are called R, S, T, U, V, and W. As shown in FIG. 4, the 8-bit subcodes are assembled using the 9th frame as one subcoding frame, and among these 98 frames, the 8-bit subcodes of the 0th frame and the 1st frame are as follows: This sync pattern is used as a sync pattern for subcoding, and this sync pattern is used by the subcode signal processing circuit 110 in FIG.
This is a subcoding frame recognition pattern for identifying subcodes P-W of a frame.

Bits P and Q of the second frame to the 97th frame are control bits and are used for system control.

Further, bit R-W is a user's bit and is used when recording data such as a still image, but since it is not used in this embodiment, its explanation will be omitted.

Next, the role of the control focus points P and Q will be explained by taking as an example a CD on which three songs are recorded as shown in FIG. In a CD, various data are recorded from the inner circumference of the CDIO 3 to the outer circumference, as shown in FIG. The innermost area of the disc (with a diameter of 461 m1 to 501 m1)
Il area] is called a lead-in area. In this lead-in area, among the data recorded in frame units as explained in FIG. 3, a TOC (Table of Co
Information corresponding to the table of contents of all songs recorded on one CD is recorded.

The control bit Q corresponding to the table of contents information for one song of this TOC will be explained using FIG. 5.

In FIG. 5, Ql, Q2. . . , Q96 correspond to the control bits Q of the second frame, third frame, . . . , 97th frame in FIG.

Among these, the flags Q1 to Q4 are used to identify the number of channels of audio data, the presence or absence of emphasis, etc. The next four bits are 1, and the next 8 bits are all 0. The next 8 bits are points, which are data related to track numbers (corresponding to song numbers). The following three 8-vias) are the minutes, seconds, and frame number of the relative time (described later).
represents the data that increases from the start point of the lead-in area to the end point of the lead-in area,
Used for internal systems, but not particularly visible to the outside world.

The next 8 bits are all O1s, and the three sets of 8 bits are the minutes, seconds, and frame numbers of the absolute time.Using these three time information, you can select the famous song in the program area that corresponds to the above point (song number). is expressed as the elapsed time from the start of the program area. For example, in the case of a CD on which three songs are recorded as shown in FIG. 7, the absolute time data of the beginning of the famous song is recorded for each of points 01, 02, and 03.

The last 16 bits are an error detection code (CRCC code). Note that this CRCC is
Dancy Check Code is a type of error correction code that divides information bits by a fixed number and uses the remainder as check bits.

In addition, the program following the lead-in area mentioned above.
Audio data is recorded in the area in units of frames as shown in FIG. The control focus points P and Q in the subcodes in this frame are recorded in numbers as shown in FIG. Control pick l-P is data indicating between songs or during a song, and if the frame corresponds to an inter-song period and there is no audio data 303 or 305 (see Figure 3), it is 1; O if data exists
is set to

Further, various types of time information shown in FIG. 6 are recorded by the control bit Q. As explained in FIG. 4, the subcode consists of 98 frames (the time of one frame is 136.
05μ5ec) as one subcoding frame, the time of one subcoding frame (
136.05 μsec x98), that is, time information in units of 1/75 seconds can be recorded using the control bit Q.

In FIG. 6, the first and next four bits are the same as for bins l-Q in the TOC described in FIG. The next 8 bits indicate a track number (music number), and the next 8 bits are an index, which is a subdivision of the track number. The next three 8-bits are relative times, each representing the elapsed time since the start of each city in minutes, seconds, and frame numbers, and the display is updated every 1/75 seconds. The next 8 bits are all O's.

The next three 8 bits are absolute time, and are T as explained in Figure 5.
As in OC, the elapsed time from the start of a program area to the time of its subcoding frame is expressed with an accuracy of 1/75 second. The last 16 bits are an error detection code (CRCC code).

Now, as explained in Fig. 4, one sub-coding frame is made up of 98 frames, and one sub-coding frame corresponds to 1775 seconds, so a series of 75 sub-coding frames is used. The data will be the same second data.

The 75 subcoding ink frames in the same second data are sequentially numbered from O to 74 as subcoding frame numbers, which are abbreviated as the above-mentioned frame numbers.

In this way, if all the TOC data explained in FIG.
In other words, it becomes possible to detect with an accuracy of 1/75 seconds.

For this reason, as will be described later, the CD* control section 10 in FIG.
3, when accessing the audio data of each city recorded on the CD 105, the beginning position of the audio data of any song can be accessed accurately by reading the TOC data.

Next, the subcode signal of the CD 105 is transmitted to the CD control unit 10.
The standards of the Electronics Industries Association of Japan (EIAJ) regarding the digital audio inkface for outputting from 3 to the electronic keyboard instrument section 200 will be explained.

Digital audio interface signals are composed of subframes, frames, and blocks.

As shown in Figure 8(a), the subframe has a configuration for transmitting a signal having 32 time slots, and in normal stereo, there are two time slots, one for each channel, L channel and R channel. The sub-frames constitute one frame as shown in FIG. 2(b), and one frame is transmitted at the period of the sampling frequency.

These 192 frames (frame O to frame 192)
A block is a series of .

Next, the signal format of the subframe shown in Fig. 8 (a
) will be explained in order of the 32 time slots.

Time slots 0 to 3 are used for transmitting a preamble, which will be described later. In the case of a subframe of channel L, such as frame 191 in FIG.
Make it M. However, when it comes to the beginning of a block, rB
, make it. For channel R subframes, always “
W”.

In this way, the periods of subframes, frames, blocks, etc. are extracted by preambles such as "M", "W", rB, etc.

Time slots 4 to 7 are used for transmitting auxiliary information or audio data when the audio data is 24 bits.

When the audio data is not used and the bit length of the audio data is 20 bits or less, time slots 4 to 4 are used.
7 to logic “0”.

Time slots 8-27 are used for transmitting audio data.

The V bit in time slot 28 is used to transmit the validity flag. The hallidity flag is set to logic "O" when the audio data to be transmitted is correct, and set to logic "-1" when it is incorrect.

Time slot 29 C pinto is used for transmitting user data. User data is used to transmit subcode information unique to each device.

The C pinto of timeslot 30 is used to transmit channel status (described below).

The P bits of timeslot 31 are used to transmit parity bits.

Next, channel status and user data that are particularly relevant to the present invention will be explained.

Channel Status Channel status exists in one bit per frame. Since 192 frames constitute one pro-tsuku,
One block of channel status is 192 bits, which is transmitted as one word.

There are two types of channel status: type ■ and type ■, depending on the content of the transmitted information. Type ■ is used to transmit information for broadcasting studios, and type ■ is used for consumer digital
It is used when transmitting information for audio equipment or information for producing music software.

Identification of type I or type ■ is made by bit 0 of the channel status word; type ■ is logic "1" and type ■ is logic rQ.

It is stipulated that

The channel status formant is shown in FIG.

In the figure, bit 0 being "0" indicates a consumer channel status.

The following 5-bit information for focus points 1 to 5 indicates the presence or absence of pre-emphasis for 2-channel audio and whether or not digital copying is prohibited.
Permits, etc. are stipulated. Focus 6~7 represents the mode,
Currently, all numbers other than "00" are on hold. next bit 8
(LSB) to 15 (MSB) are category codes, of which bit 15 is logic "0" or rl, which classifies whether it is for digital audio equipment or music software production. The remaining 7 bits (bits 8 to 14) are used to classify the usage of each device as follows.

"oooooooooo"... 2 channel General Forman I・"10000000"... 2 channel C
D player "01000000'"... 2-channel PCM encoder/decoder "11000000"... 2-channel digital
Audio tape recorder (DAT) The next 4 bits, bits 16 (LSB) to 19 (MSB), represent the source number, and bit 20 (LSB)
~23 (MSB) represents a channel number, such as eg.

'1000'...Channel A (first channel when 2 channels are used) ``0100''...Channel B (R channel when 2 channels are used) Bits 24 (LSB) to 27 (MSB) as shown below Represents the sampling frequency.

"oooo"----44,1K Hz"0100"・
---48K Hz "1100" ---32K Hz Bits 28-29 represent the accuracy of the clock.

User Data User data is mainly used to transmit sub-data other than musical tone signals, and like the channel status, it often constitutes one block, but its usage differs depending on the source.

In the CD, it is specified that subcode data is transmitted using this user data, and the data structure in this case will be explained below.

In Figure 10, a subcode program is constructed with 12 audio samples and 98 subcode symbols (including 2 synchronization signals for the subcode) to match the subcoding frame and the user data of the interface. , this block allows Q, R, S,...V
, W are configured to transmit subcode data. Note that the two words 1 to 24 are used for subcode synchronization, and "1" before bit Q represents a start bit.

(According to the original story) The automatic performance device in this embodiment is first set to the storage mode by the player. The performer is in the CD player section 1
00 plays a desired song on the CD 105, performs a performance operation on the keyboard 202c in the same manner as an actual performance according to the CD playback sound, and causes the instrument control unit 201 to perform a performance operation on the keyboard 202c based on the above performance operation. The performance data and the like are sequentially stored in the automatic performance memory 208 as automatic performance data.

After storing the automatic performance data in this way, when you issue an instruction to start automatic performance, the 1050 CD songs that were being played when the data was stored are automatically selected, and the playback of the songs on that CD is automatically started. The automatic performance starts at the same timing as when the performance was started at the time of memorization.

For example, if you want to automatically play the piano part of a piano concerto, use a disc (minus one format CD) that has been recorded without the piano part as CDIO3, and use the automatic performance data to be stored. So it's the piano part.

The details of this operation will be explained below using FIGS. 13 to 15.

First, the operation for storing automatic performance data in the automatic performance memory 208 will be explained.

This storage operation is performed in a storage mode set by turning on the mode switch 202a. When the mode switch 202a is turned on, the musical instrument control section 201 detects this and executes the control operations of steps 51 to S5 shown in FIG. 14.

Here, if you want to automatically play along with the music being played on the CD, insert the CD 105 on which the desired song is stored in advance into a part of the holder, and select the desired song using the numeric keypad on the CD operation section 102. , press the rPLAYJ switch to
Play D.

First, when the user sets the CD 105 in a part of the holder, the CD control unit 103 detects this using a micro switch (not shown), and performs a control operation to read the TOC data recorded in the lead-in area of the CD 105. I do. This operation is normally performed in all commercially available CD players.

That is, when the CD control section 103 detects that the CDIO 3 is set, the CDIO 5 is rotated and only the data in the lead-in area is read by the optical pickup 107, after which the CD is automatically stopped. As explained in FIG. 7, TOC data is recorded in the lead-in area using the control bit Q in the subcode.

The reproduced subcodes are sequentially transmitted to the subcode signal processing circuit 1.
10, the subcode signal processing circuit 110 configures the control focus Q in the subcode in the format explained in FIG. Detect, C
It is output to the D control section 103. The CDfb1 unit 103 outputs the input data to the TOC memory 101, and outputs the input data to the TOC memory 101, and
Absolute time data at the beginning of each city is stored for each INT (song number). The storage contents of this TOC memory 101 are C
It is used as data for D song selection.

Next, the user inputs the song number of the desired song on the selected CD using the song selection switch of the CD operation section 102, and
LAY, press the switch. The CD control unit 103 controls the servo control circuit 104 to rotate the CD 105, and also controls the “POIN” corresponding to the input song number.
The absolute time data at the beginning of the song "T" is read from the TOC memory 101, the optical pickup 107 is moved to the position of the read absolute time data, and the CD is played from the beginning of the song.
starts playing. In this CD playback state, the subcode signal processing circuit 110 configures the control bit Q in the reproduced subcode into the format explained in FIG. 6, and uses this data as time data corresponding to the position of the CD currently being played. (relative time data & absolute time data) and track number data corresponding to the current song number, and sends these data to the CD control section 103.

Of these subcode data, the relative time data and track number data of the CD subcode sent to the digital output circuit 117 by the CD control unit 103 are based on the format of the user data of the digital audio interface, as described above. It is configured as follows and is output from the digital output circuit 117. Thereafter, the relative time data and track number data are input to the musical instrument control section 201 via the digital input circuit 210.

The user starts playing using the keyboard 202C at the timing when automatic playing is to be performed while listening to the reproduced music from the CD being emitted from the speaker 115, and sequentially inputs automatic performance data.

When the musical instrument control unit 201 detects the start of the performance (the 14th
Figure step S1), we check the category code of the channel status of the subframe sent via the digital audio interface, find out that the data is sent from a CD player, and check the C at the time the performance starts.
The trunk number data and relative time data of D are taken in and written into the automatic performance memory 208 (step S2).
.

As shown in FIG. 13, this automatic performance memory 208 is
D! It consists of an IJ control data storage area and an automatic performance data storage area. This CD! CD track number data and relative time data of the performance start time are stored in the IJ control data recording area.

The musical instrument control unit 201 stores performance data sequentially input through the keyboard 202c as automatic performance data in the automatic performance memory 2.
08 in the automatic performance data storage area (step S3).

The format of this automatic performance data can be various formats used in conventional automatic performance devices. for example,
For each key operation on the keyboard 202c, the automatic performance data is in the form of a set of pitch data of the operated key and tone length data representing the pressing time of the key. Alternatively, assign note-on data and note number data to the start of key press,
Assign note-off data and note number data to key press release. Then, each time there is an operation (event) such as starting or releasing a key press, time data from the previous operation to the current operation is assigned as event data.

Automatic performance data can be formed using such data. Note that the time data such as the note length data and event data are timed by a timer circuit 209 (see FIG. 1), and the timed time data is used.

In this way, the user operates the keyboard 202c while listening to the reproduced music on the CD, and automatically inputs the automatic performance data one by one. When the part of the song that should be played automatically ends, the user stops operating the keyboard 202c and switches to the mode switch 202a.
Turn off. When the musical instrument control section 201 detects that the mode switch 202a is turned off (step S4), it ends the automatic performance data writing operation and stores the data that has already been written in the automatic performance data storage area of the automatic performance memory 208. An end coat is written following the automatic performance data (step S5).

In this way, the automatic performance data storage operation is performed.

Note that during this storage operation, a corresponding musical tone signal is generated by the tone generator 203 and emitted from the speaker 207 in response to a performance for inputting automatic performance data using the keyboard 202c.

Also, if you simply input automatic performance data without playing CDIO3, the above-mentioned writing to the CD control data area will not be performed, and therefore synchronized playback of the CD will not occur when automatic performance is played. . In that case, only automatic performance will be performed.

Next, the operation of reading the automatic performance data and actually performing the automatic performance will be explained.

When storing automatic performance data, the above-mentioned
If automatic performance data is stored while the D105 is being played, there is no need to manually select/play the CD105 during automatic performance; the same CD song as when stored will be automatically selected; At the same timing, automatic performance that matches the playback of the CD song will automatically start.

First, the user sets the same CD 105 as the one used for storing data into a part of the holder. With this set of CDs, TOC
The data is automatically read and stored in the TOC memory 101.
OC data is stored.

The second operation is as described above. Next, the user selects the start switch 2 with the mode switch 202a in the OFF state.
Operate 02b. When the musical instrument control section 201 detects the operation of the start switch 202b, it starts the control operations of steps 36 to S20 in FIG. 15.

First, the musical instrument control section 201 starts the start switch 202b.
When it is detected that has been operated, automatic performance memory 20B
Read the track number data and relative time data from the CDIIJm data storage area of
In order to select a song and play that CD song, the following control is performed (step S6 in FIG. 15).

To do this, the musical instrument control section 201 needs to send the read track number data and data regarding the CD playback start command to the CD control section 103.

First, the musical instrument control section 20] outputs the read track number data and data regarding a CD playback start command to the key code output circuit 2].

Thereafter, the track number data and the data regarding the CD playback start command are converted into a song number code and a playback code, outputted from the keycode output circuit 211, and given to the keycode conversion section 301.

In this case, the performer inputs data regarding the manufacturer and model of the CD player section 100 (CD player or digital audio tape recorder (DAT)) into the key code conversion section 301 using the manufacturer specification key 302 in advance. I'll keep it. As a result, the key code conversion unit 301 generates a PPM modulated remote control signal having a code system corresponding to the model, as described above, according to the key code outputted from the key code output circuit 211 and data regarding the manufacturer and model. Convert to

For example, if the CD player section 100 is made by "manufacturer A" and the track number data read by the musical instrument control section 201 is
3. Assuming that, when the manufacturer specification key 302 "Manufacturer A" and the "r CD player" key are pressed, the above remote control signal is
The data structure is the same as the key code output from the CD operation section 102 when the PLAYJ key is operated.

Thereafter, the remote control signal is transmitted from the remote control transmitter 301 made of an infrared light emitting diode, and sent to the remote control receiver 1 made of a photodiode of the player section 100.
19 to the key code input section 118. Thereafter, the remote control signal is demodulated by the key code input section 118 and becomes track number data and a playback start signal.
It is input to the D control section 103.

The CD control unit 103 searches the TOC memory 101 for absolute time data having the "POINT" of the song number that matches the input track number data, reads it out, and accesses the CDIO 3 with the absolute time data in response to the playback start signal. This absolute time data is the absolute time data at the beginning of the CD song that was being played in the pack when the automatic performance data was stored. Then, the CD control unit 103 starts playing the CD from the beginning of the accessed song. Furthermore, the musical instrument control unit 201 stores relative time data read from the automatic performance memory 208 in an internal register (not specifically shown).

In the CD playback state, the subcode signal processing circuit 110 configures the control bit Q in the reproduced subcode into the formant explained in FIG. 6, and uses this data as data corresponding to the position of the currently playing CD. Time data (relative time data and absolute time data) and track number data corresponding to the current song number are detected, and these data are sent to the CDIII unit 103 by the unit 03°C.
Of these data, the D control unit 103 uses the relative time data and trunk number data to control the musical instrument via the digital output circuit 117 and the digital input circuit 201 that constitute the audio digital interface, as described above. The data is sent to the section 201.

The musical instrument control section 201 compares the relative time data of the currently playing song sent from the CD@ control section 103 point by point with the relative time data held in the internal register (step S7). In this comparison operation, if a match is detected between the relative time data of the song currently being played and the relative time data held in the internal register (step S8), the instrument control unit 201 The automatic performance data is sequentially read out from the beginning and automatic performance is started (step 39).

That is, the time from the start of CD playback to the time when this coincidence is detected is the same as the time from when CD playback starts in the storage mode to the time when the performance just starts. Since the automatic performance starts when this coincidence is detected, it is possible to synchronize the CD and the automatic performance at exactly the same timing as in the storage mode. The automatic performance operation is as follows.
It is the same as in the case of the conventional device, and the automatic performance memory 20B
The automatic performance data sequentially read out from the automatic performance data storage area of is given to the tone generator 203 to generate a corresponding musical tone signal and emit the sound from the speaker 207. Regarding time data (tone length data or event data) among the automatic performance data, control is performed such that when the timer circuit 209 measures the time corresponding to the time data, the next data that stops the sound production of the musical tone is read out. You will be killed.

In this way, automatic performance playback progresses sequentially,
When all the automatic performance data for the song is read out from the memory 208, the next end code is read out. When the musical instrument control section 201 detects that the read data is an end code (step 510), it ends the control operation for automatic performance. Note that when the song currently being played ends, the CD control section 103 detects the end of the song using the control bit P of the subcode, stops the rotation of the CD, and ends the CD playback.

As described above, in this embodiment, digital audio
A remote control using an interface and infrared rays allows you to combine a general home CD player and an electronic musical instrument to play CDs.
Using automatic performance data based on a performance that matches the player's playback, automatic performance can be performed in synchronization with the playback of a CD.

(7!) In the above-mentioned embodiment, the relative time data of the song on the CD at the time of starting the performance is written in the automatic performance memory 208 in the storage mode, but instead of this relative time data, the time measured by the timer circuit 209 is written. Data can also be used. That is, the timing operation of the timer circuit 209 is started at the time when the reproduction of the CD is started. This timekeeping operation is then stopped at the start of the performance, and the measured time data is used in place of the relative time data. When replaying automatic performance, this time data may be compared with the current relative time data of the CD.

Furthermore, the same operation can be achieved by writing absolute time data instead of relative time data. In short, the C at the time of starting the performance (the time of starting input of automatic performance data)
Any time data indicating the reproduction position of D (recording medium) may be used. This time data is equivalent to address data indicating the data recording position on the recording medium.

Further, in the above-described embodiment, in the storage mode, the track number data indicating the song number of the CD at the time of starting the performance is written into the automatic performance memory 208 together with the relative time data. Although the selection of music is automatically performed, the user may manually select the music of the CD and operate the playback, and the start timing of the automatic performance may be controlled using only the relative time data. In this case, there is no need to write track number data to memory 208 in storage mode.

In addition to CDs, R-DAT (R
otary Head Type Djgjtal A
audio tape rec.

rder) magnetic tape can be used. Similar to a VTR (video cassette tape recorder), this R-DAT records/reproduces digital data by winding a magnetic tape diagonally around a rotary drum to which two rotary heads are attached. in this case,
The recording track of the R-DAT tape has a main area (PC
M) is provided, and subareas (SLIB-1, 5UB-2) in which subcodes are stored are provided on both sides thereof. As with the CD, it is standardized to record the program number, running time (relative time), and absolute time (absolute time) as this subcode. Therefore, when storing automatic performance data while playing back the R-DAT tape, absolute time data (or running time data) may be written in the automatic performance memory together with the program number data. In addition, R-DAT is also CD
Similarly, standards for recording TOC data have been established, but if this TOC data is recorded, songs can be selected using this TOC data during automatic performance playback.

Further, in the above-described embodiments, an electronic keyboard instrument was used to explain the musical instrument to be played automatically, but the present invention is not limited to electronic keyboard instruments; for example, keyboards such as electronic wind instruments and electronic guitars can be used. There is no problem at all with electronic musical instruments that do not have 9. Furthermore, the above-mentioned automatic musical instruments are not limited to electronic musical instruments, but can also be applied to conventional acoustic musical instruments, such as pianos, that use sensors to collect pitch data, velocity data, etc. If you output data and use plungers or solenoids to press keys accordingly, you can automatically play a piano part along with a minus one CD, for example.
You can play a piano concerto in a way that feels close to a live performance.

〔Effect of the invention〕

According to the present invention, playback timing information (time data) of audio data sent from an audio playback device is recorded in an automatic performance memory, and the playback timing information is used during automatic performance playback to determine when to start playing the automatic performance. By controlling this, it is possible to automatically play a musical instrument in synchronization with the audio data playback operation of the audio data playback device, but it is necessary to prepare an audio data playback device specifically developed for automatic performance synchronization. It has the great effect of not having any

In other words, the automatic performance device is provided with digital input means, which is a receiving circuit for the digital audio interface, which is becoming standard equipment in audio data reproducing devices such as CD players and DATs, which are becoming increasingly sophisticated. By connecting to an audio playback device via the CD player, playback timing information from a general-purpose CD player or the like can be input, and the above-mentioned synchronized automatic performance becomes possible.

Furthermore, in the present invention, a remote control transmitting means, which is a transmitting circuit of a remote control device such as an infrared remote control, which is becoming standard equipment in audio data reproducing devices, is provided, and the remote control transmitting means is provided, which instructs the audio data reproducing device to start playback, Furthermore, by making it possible to transmit music selection information, it becomes possible to issue an instruction to start playing audio data and perform music selection operations from the automatic performance apparatus side.

In addition, by making it possible to set the remote control signal sending time number for two models, it becomes possible to support many types of audio data reproducing devices from many manufacturers.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of an embodiment of the automatic performance device of the present invention, FIG. 2 is an external view of the automatic performance device, FIG. 3 is a diagram showing the frame former/nod of the CD 105, and FIG. 4 5 is a diagram showing the format of the CDIO3 subcoding frame, FIG.
Figure 7 is a diagram showing the contents of bit Q in the program area of CDIO3, and Figure 8 (a
), (b) are diagrams showing the signal format of the digital audio interface, FIG. 9 is a diagram showing the contents of the channel status format of the digital audio interface, and FIG. 10 is a diagram showing the contents of the channel status format of the digital audio interface. 11 is a diagram showing an example of a remote control signal using infrared rays. FIG. 12 is a diagram showing a manufacturer specified key 302 of the remote control unit 300.
FIG. 13 is a configuration diagram of the automatic performance memory 208, and FIG. 14 shows how the automatic performance data of this embodiment is stored in the automatic performance memory 208.
FIG. 15 is a flowchart of operations during automatic performance of this embodiment. 100...CD player section, 101...TOC memory, 102...CD operation section, 103...CD8116 section, 104...servo circuit, 105...CD, 106...disc motor, 107... Optical pink up, 108... Pickup feed motor, 109... Demodulation circuit, 110... Subcode signal processing circuit, 1]1... Audio data signal processing circuit, 112...D /A converter, 113...Low pass filter (LPF), 114...
- Amplifier, 115...Speaker, 116...RAM. 117...Digital output circuit, 118...Key code input circuit, 119...Remote control receiving section, 200...Electronic keyboard instrument section, 201...Musical instrument control section, 202...Musical instrument operation section, 202a...Mode switch, 202b...
・Start switch, 202c...Keyboard, 203...Tone generator, 204...D/A converter, 205...Low pass filter (LPF), 206...
- Amplifier, 207... Speaker, 208... Automatic performance memory, 209... Timer circuit. 210...Digital input circuit, 211...Key code output circuit, 300...Remote control section, 301...Key code conversion section, 302...Manufacturer specified key, 303...Remote control transmission section. Patent applicant: Casio Computer Co., Ltd. 1 frame --- 24 bits 1
12 pieces ◇ 4 pieces 12 pieces 4 pieces added 8 bits CD + 05 frame format diagram No. 31!1 (2 pieces) (6 pieces) 302 subcode F CD105tn Subcorn Nine Square Frame Four 7・
β-movement 5γ 〇-9-Y @ 14 Figure 10 Δ Total lr image 1-J Lolimotun coffin number 1 minute'j Tao゛7
Figure 11 @ Figure 12

Claims (1)

[Claims] 1) Recording the input performance data together with its input timing information in an automatic performance memory as automatic performance data, and reproducing the automatic performance data at the same timing as when it was input to cause the musical instrument to automatically perform. an automatic performance device connected via a digital audio interface, and a digital input means for receiving song selection information and playback timing information sent from an audio data playback device connected via a digital audio interface; remote control transmitting means for transmitting at least song selection information and playback start instruction information to the audio data playback device; and when starting automatic performance recording, the song selection information and playback timing information input from the digital input means are transmitted to the automatic playback device. a recording control means for recording in a memory; and at the start of automatic performance reproduction, causing the remote control transmission means to transmit the reproduction start information and the song selection information read from the automatic performance memory; playback control means that compares playback timing information with the playback timing information input from the digital input means and starts reading out the automatic performance data from the automatic performance memory when both pieces of playback timing information match; An automatic performance device characterized by having: 2) An automatic performance device that records input performance data together with its input timing information in an automatic performance memory as automatic performance data, and reproduces the automatic performance data at the same timing as when it was input to cause a musical instrument to perform automatically, Digital input means for receiving playback timing information sent from an audio data playback device connected via a digital audio interface; and at least a playback start instruction to the audio data playback device connected via a remote control device. remote control transmitting means for transmitting information; recording control means for recording the playback timing information inputted from the digital input means in the automatic performance memory at the time of starting automatic performance recording; The transmitting means transmits the reproduction start instruction information, and then the reproduction timing information read from the automatic performance memory and the reproduction timing information input from the digital input means are compared, and both pieces of reproduction timing information match. An automatic performance device comprising: playback control means that starts reading out the automatic performance data from the automatic performance memory at a certain point in time. 3) further comprising model setting means for setting the model of the audio data playback device, and the remote control transmitting means transmits the model setting information set by the model setting means together with the playback start instruction information or the song selection information. The automatic performance device according to claim 1 or 2, wherein the automatic performance device transmits to the audio playback device. 4) The automatic performance device according to any one of claims 1 to 3, wherein the playback means is a compact disc player. 5) The automatic performance device according to any one of claims 1 to 3, wherein the playback means is a DAT (digital audio tape recorder). 6) The automatic performance device according to any one of claims 1 to 5, wherein the remote control device is an infrared remote control device.