JPH06295574A - Musical performance recording and reproducing device - Google Patents

Abstract

PURPOSE:To provide the musical performance recording and reproducing device which always maintain the correspondence relation between video data and musical performance data excellent and is easily handled. CONSTITUTION:Musical performance data which are outputted by an automatic piano 11 according to playing operation are transferred to a video deck 12 on which the performance scene of the performance operation is transferred to a video deck 12 during picture recording by conforming to the transfer rate of MIDI, and written on a video tape a on which video data are recorded. At the time of performance reproduction, the video data recorded on the video tape are reproduced and the performance data recorded on the same video tape are read out and demodulated into a digital MIDI signal, which is sent out as a MIDI signal to the automatic piano 11, so that the video data and performance data are reproduced synchronously with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a performance recording / reproducing apparatus suitable for use in synchronizing an image with an automatic performance, for example.

[0002]

2. Description of the Related Art As is well known, in recent years, a technique has been developed in which performance data generated in response to a performance operation is recorded, the performance scene is recorded as video data, and both of these data are reproduced in synchronization. Has been done. When reproducing performance data in synchronization with video data in this type of technology, for example, while reproducing video data recorded by a VCR on a display or the like, a synchronization signal generated from an output signal of the VCR The performance data is reproduced according to.

In such synchronous reproduction, first, the synchronizer generates a sync signal based on the output signal of the video deck, and supplies this to the sequencer. Then, the sequencer sequentially reads out the performance data recorded in advance on the floppy disk or the like at the performance tempo corresponding to the synchronizing signal, and supplies this to the automatic performance device. This allows
The automatic performance device reproduces the performance data in synchronization with the video data.

The synchronizer used for the above-mentioned synchronized reproduction stores, for example, a pulse signal designating the tempo of a rhythm in association with a bar number and a beat number on a musical score, and at the time of reproduction, stores this pulse number. A pulse signal (synchronous signal) that specifies the beat number and the pulse number is generated. By doing so, it is possible to reproduce from any portion of the performance music. Regarding such a synchronizer, Japanese Patent Publication No. 15877/1989,
Alternatively, it is disclosed in Japanese Utility Model Laid-Open No. 60-19096.

[0005]

By the way, in the above-mentioned prior art, since the video data is recorded on the video tape and the performance data is recorded on the floppy disk in different media, when the data to be stored increases, There was a problem that data management became troublesome. In addition, since the medium is different, the device configuration becomes complicated, which makes it difficult for general users to use. Further, when the correspondence between the video data and the performance data cannot be established due to the suspension of reproduction of one medium, the fast-forwarding / rewinding, etc., there is a problem that it takes a search time to reconcile the two data. .

The present invention has been made under such a background, and an object thereof is to provide a performance recording / reproducing apparatus in which the correspondence between video data and performance data is always maintained and which is easy to handle. .

[0007]

In order to solve the above-mentioned problems, the invention according to claim 1 is to provide performance data generated in response to a performance operation on an automatic performance device and a performance scene of this performance operation. And record the video data according to
In a performance recording / reproducing apparatus for reproducing the performance data and the video data in synchronization with each other, the performance data output by the automatic performance device at a predetermined rate in response to a performance operation during performance recording is used as a performance scene of the performance operation. Performance recording means for transferring the corresponding video data to the recording device at the predetermined rate and writing the same on the same recording medium as the video data, and reading the video data and the performance data from the recording medium at the time of reproducing the performance. And playing back the video data, transferring the performance data to the automatic performance device at the predetermined rate, and playing back the performance data in synchronization with the video data. There is.

According to a second aspect of the present invention, in the performance recording / reproducing apparatus according to the first aspect, when the performance is reproduced, the read-out is performed based on the frequency of the data recorded together with the video data, which is read from the recording medium. Based on the identification result by the identification means for identifying whether or not the data to be played is the performance data, and if it is the performance data, it is supplied to the automatic performance device, while if it is not the performance data, It is characterized in that it comprises an automatic performance device and a switching means for supplying to a reproduction device different from the automatic performance device.

[0009]

According to the first aspect of the present invention, when recording a performance, the performance recording means outputs the performance data which the automatic performance device outputs at a predetermined rate in response to the performance operation according to the performance scene of the performance operation. The video data is transferred to a recording device for recording the video data at the predetermined rate and written on the same recording medium as the video data. As a result, recording of video data and performance data is simultaneously performed on the same medium. On the other hand, during performance reproduction, the performance reproduction means reads the video data and the performance data from the recording medium, reproduces the video data, and transfers the performance data to the automatic performance device at the predetermined rate. Then, the performance data is reproduced in synchronization with the video data. As a result, synchronous reproduction is performed in a state in which the correspondence relationship is always maintained without associating the video data with the performance data by the synchronization code or the like.

According to the second aspect of the invention, in addition to the operation of the first aspect of the invention, the identification means reads the data recorded together with the video data, which is read from the recording medium at the time of playing back the performance. Identifying whether or not the read data is the performance data based on the frequency,
Based on the identification result by the identification means, the switching means supplies the performance data to the automatic performance device, while supplies the performance data to a reproduction device different from the automatic performance device. As a result, when the performance data is recorded on the recording medium together with the video data, the performance data is supplied to the automatic performance device and reproduced.
On the other hand, when data other than performance data such as audio signals is recorded on the recording medium together with the video data,
The data other than the performance data is supplied to and reproduced by another sound reproducing device, for example.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. A: First Embodiment FIG. 1 is a block diagram showing the overall configuration of the first embodiment of the present invention. In this figure, 10 is a performance recording / reproducing apparatus according to the embodiment. The device 10 includes a MIDI device such as an automatic piano (hereinafter simply referred to as an automatic piano) 11
And a video deck 12 for recording the performance scene. That is, the apparatus 10 captures the digital MIDI data output from the automatic piano 11 simultaneously with the performance during recording of the performance, converts the digital MIDI data into analog data, and supplies the analog data to the video deck 12. As a result, the VCR 12 receives the M supplied from the device 10 in parallel with the operation of recording the performance scene of the automatic piano 11.
Write the IDI data to one side (either the left or right channel) audio track of the videotape.

On the other hand, during performance reproduction, the video deck 12 outputs the MIDI data recorded on one side audio track of the tape in parallel with the operation of reproducing the video data recorded on the video tape. The device 10 takes in the analog MIDI data supplied from the video deck 12, converts it into digital MIDI data, and then supplies it to the automatic piano 11. As a result, the automatic piano 11 plays a musical sound according to the MIDI data supplied from the device 10 in synchronization with the video reproduced by the VCR 12.

Next, FIG. 2 is a block diagram showing the configuration of the apparatus 10. In this figure, reference numeral 1 is a CPU that controls each part of the device connected via a bus BUS. This CPU 1 is a MIDI (Musical Instrument D) described later.
control of serial data input / output including input / output, detection of CD (carrier detect) and signal disconnection, and error processing when a communication error occurs. Reference numeral 2 is a ROM that stores various control programs loaded by the CPU 1. Reference numeral 3 denotes a RAM used as a work area of the CPU 1, in which various register values and the like are temporarily stored.

Reference numeral 4 is an ACIA (Acynchronous Communications Interface Ada) for controlling I / O with the automatic piano 11.
pter; asynchronous communication LSI). This ACIA4 is
MID output by the automatic piano 11 when recording a performance
The I signal Pi is fetched from the input terminal MIDI_IN and supplied to the CPU 1 as MIDI data.

On the other hand, during performance reproduction, MIDI data supplied from the CPU 1 is output from the output terminal MIDI_OUT as a MIDI signal Po and supplied to the automatic piano 11. In this case, the MIDI signals Pi and Po
Is a half wavelength of the carrier wave of 15.625 kHz in accordance with the MIDI transfer rate of 31.25 kHz.
The bits are transmitted correspondingly.

Reference numeral 5 is a transmission / reception unit for controlling data transmission / reception with the video deck 12, and is composed of a transmission unit 5a and a reception unit 5b. The transmitting unit 5a modulates the digital MIDI data Md supplied from the CPU 1 into an analog signal at the time of recording the performance, and outputs this as an output terminal TAPE.
VCR 12 as MIDI signal To from _OUT
Supply to.

Here, the MI that is analog-modulated at the time of recording.
An example of monitoring the waveform of the DI signal To with an oscilloscope is shown in FIG. In this figure, one scale M on the horizontal axis is 100 μsec, and in this case, it can be seen that one cycle and a half of the waveform corresponding to the carrier wave substantially coincide with this one scale M. Therefore, the half cycle of this carrier wave is about 32 μsec, which confirms that it corresponds to the MIDI transfer rate of 31.25 kHz.

On the other hand, the receiving section 5b receives the analog MIDI signal Ti supplied from the VCR 12 as an input terminal TA.
Captured from PE_IN, digital MIDI
After converting into the data Md, this is supplied to the CPU 1.
Further, when receiving the carrier wave, the receiving unit 5b outputs a CD (Carrier Detect) signal notifying the carrier wave to the CPU 1.

FIG. 4 shows an example in which the oscilloscope monitors the waveform of the analog MIDI signal recorded on the video tape during reproduction. In this case as well, one and a half cycles of the waveform corresponding to the carrier wave substantially correspond to one scale of 100 μsec on the horizontal axis, and from this fact, M
It is confirmed that the IDI transfer rate of 31.25 kHz is supported.

Now, returning to FIG. 2, the structure of the apparatus 10 will be described. In the figure, 6 is an oscillator. The oscillator 6 supplies an original vibration signal of 500 kHz to both the ACIA 4 and the transmission / reception unit 5. As a result, the ACIA 4 and the transmission / reception unit 5 operate based on the original vibration signal supplied from the oscillator 6.

Next, referring to the block diagram shown in FIG. 5, the detailed structure of the transmitting / receiving section 5 will be described. In the figure, first, the transmission unit 5a includes a NAND circuit 51, a D flip-flop 52, and a modulation circuit 53. Further, the modulation circuit 53 includes a differential operational amplifier 531,
The resistor 532 and the capacitor 533 are connected in series. With such a configuration, the transmission unit 5a is
The MIDI signal supplied from the output terminal TXD of U1 is set to 31.25 which is supplied from the output terminal TXCLK of the CPU1.
The data is fetched in synchronization with the clock signal of kHz, modulated into an analog signal, and output from the output terminal TAPE_OUT.

On the other hand, the receiving section 5b is, as shown in the figure, an amplifier circuit 54, a comparator 55, and an RS flip-flop 5.
6, a one-shot multivibrator (hereinafter abbreviated as SMV) 57, two D flip-flops 58 and 59, and an XOR circuit 60 are connected in series. Further, the SMV 57 is connected to a CD circuit 61 that supplies a CD signal indicating the start of transmission of a carrier wave to the input terminal CD of the CPU 1. Furthermore, two D flip-flops 58,
A count circuit for counting the original vibration signal of 500 kHz supplied from the oscillator 6 is connected to 59. Here, the count circuit 62 captures the eighth count of the waveform, that is, the most stable position.

With such a configuration, the receiving section 5b takes in the analog MIDI signal Ti supplied from the video deck 12 from the input terminal TAPE_IN, amplifies the analog MIDI signal Ti in the amplifier circuit 54, and then uses the comparator 55 to obtain the signal shown in FIG. It is converted into the digital pulse Dp shown. The digital pulse Dp further passes through the RS flip-flop 56, and then the falling edge thereof is detected by the SMV 57. Here, the CD circuit 61 supplies the CD signal to the CD terminal of the CPU 1 after the CD circuit 61 detects a constant cycle (12 cycles) of the carrier by detecting the first falling edge of the received signal.

Then, the digital pulse Dp whose falling is detected by the SMV 57 is input to the D terminal of the D flip-flop 58. As a result, the D flip-flop 5
As shown in FIG. 6, 8 outputs an output pulse Fp1 based on the clock CK supplied from the frequency dividing circuit 62.
Further, the D flip-flop 59 outputs an output pulse Fp2 (see FIG. 6) delayed by one pulse from the output pulse Fp1 based on the clock CK. Next, these output pulses Fp1 and Fp2 are XORed by the XOR circuit 60.
(Exclusive or) was taken and this result is MI
The DI data Md (see FIG. 6) is supplied to the input terminal RXD of the CPU 1.

Therefore, when the analog signal supplied from the video deck 12 is converted into a digital pulse Dp as shown in FIG. 7, for example, this digital pulse Dp
Is encoded like the bit string Bd. In other words, the receiving unit 5b performs conversion such that the level is "1" when the level has changed with respect to the signal level one unit before, and the level is "0" when the level has not changed.

According to the configuration of the apparatus 10 described above, when the performance of the automatic piano 11 is recorded, the MIDI data (performance data) output from the automatic piano 11 is transferred to the VCR 12 which records the video. And written on the audio track on one side of the video tape. At this time, M
IDI data has a MIDI transfer rate (31.25k
1) corresponds to a half wavelength of a carrier wave of 15.625 kHz so as to correspond to 1 Hz, and is transferred to the VCR 12. Therefore, the MIDI data is recorded in synchronization with the recorded video data without any delay.

On the other hand, when the recorded performance is reproduced, MIDI data is read out at the same time as the image reproducing operation and supplied to the automatic piano 11. Also in this case,
Since the MIDI data is transferred by the above method so as to match the MIDI transfer rate, the automatic piano 11 performs the performance in synchronization with the video.

As described above, according to this embodiment, video data and performance data corresponding thereto are recorded on the same medium (video tape) including other audio sounds, so that the medium is unified and data management is performed. As a result, the device configuration is simplified and a device that can be easily handled by general users can be provided.

Further, in the present embodiment, the MIDI data is recorded on the audio track on one side of the video tape, but it is also possible to use the both left and right channels as shown in FIG. That is, the automatic piano 11 is connected to the right channel of the video deck 12 via the device 10, and another electronic musical instrument 13 is also connected to the left channel of the video deck 12 via the device 10.

As a result, the performance data of the automatic piano 11 is recorded on the right side audio track, and the performance data of the electronic musical instrument 13 is recorded on the left side audio track. Therefore, during reproduction, the performances of the two types of musical instruments are synchronized with the video. You can listen to it. In this case, a normal high-fidelity VTR (Video Tape)
In the Recorder), the left and right audio tracks are used for recording MIDI data, so it is not possible to record audio sound. However, in the audio PCMVTR that has recently been marketed,
Since it has two recording areas for hi-fi and digital, stereo recording of audio sound is also possible.

Further, this embodiment can be utilized in various modes. For example, by using it as a lesson tool for playing musical instruments, fingering and left and right cross-hands, which were conventionally impossible to understand only by the movement of the keyboard with an automatic piano, can be easily performed from the image when the performer plays. Since you can check, you can greatly improve the lesson effect.

Further, for example, when used for a home video concert, it is possible to double the enjoyment of piano music including a concert such as a performance scene by an artist or a commentary by characters. Further, for example, when used for a mini concert, it is possible to enjoy a live piano performance while watching a movie of a performer, such as watching a famous song in a small or medium hall. Also,
For example, if you use it as a tool for a recital,
You can record the performance of the automatic piano by yourself in advance, and you can adjust the timing while watching the video of yourself when the performer plays a single solo on the day of the presentation.

It is also possible to apply the present embodiment to cable broadcasting and transmit performance data in real time. In this case, since the direct network (dedicated line) of the cable broadcasting company is used instead of the telephone network, it is possible to transmit at a high frequency.

B: Second Embodiment Next, a second embodiment of the present invention will be described. FIG. 9 is a block diagram showing the overall configuration of the second embodiment of the present invention. It should be noted that the embodiment shown in this figure is configured so as to correspond to the reproduction of a performance. In the figure, the performance recording / reproducing apparatus 10 'according to this embodiment has its input terminal TAPE_
IN2 is connected to the audio right channel of the video deck 12, and its output terminal TAPE_OUT2 is connected to the audio right channel of the TV (television) 13. An automatic piano 11 is connected to the output terminal MIDI_OUT of the device 10 'as in the first embodiment. Furthermore, the left audio channel of the TV 13 is connected to the left audio channel of the VCR 12,
Further, the video output end of the video deck 12 is connected to the video input end of the TV 13.

In such a structure, the VCR 1
2 reproduces a video tape having a MIDI analog modulation signal or other audio signal recorded on the right audio track, together with the video signal and the audio signal (or audio signal) recorded on the left audio track.
As a result, the video signal and the audio signal (or the audio signal) are supplied to the TV 13, the video is displayed on the monitor of the TV 13, and the corresponding music (or the sound) is sounded from the left speaker of the TV 13.

The signal recorded on the right audio track of the video tape is supplied to the performance recording / reproducing device 10 '. The device 10 'then identifies the input signal supplied from the VCR 12, and the input signal is MIDI.
If it is an analog modulation signal of
After demodulating to IDI data, it is output to the automatic piano 11. As a result, the performance of the automatic piano 11 is performed in synchronism with the image displayed on the monitor of the TV 13.

On the other hand, when the input signal supplied from the VCR 12 is another audio signal, the device 10 '
Outputs this to the audio right channel of the TV 13 as it is. As a result, music or the like corresponding to the image displayed on the monitor is produced by the right speaker of the TV 13 based on the audio signal.

Next, details of the performance recording / reproducing apparatus 10 'according to this embodiment will be described. FIG. 10 shows this device 1.
It is a block diagram which shows the structure of 0 '. In this figure,
The same parts as those shown in FIG. 2 are designated by the same reference numerals and the description thereof will be omitted. Also, the device 1 shown in this figure
0'is different from the first embodiment shown in FIG.
Identifies the input signal supplied from the video deck 12, and controls the output switching circuit 7 interposed between the transmitting / receiving unit 5 and the video deck 12 based on the identification result.

In FIG. 10, the output switching circuit 7 includes input / output terminals TAPE_IN1 and TAP respectively connected to the input / output terminals TAPE_IN and TAPE_OUT of the transmitter / receiver 5.
Input / output terminals TAPE_IN2 and TAPE that have E_OUT1 and are connected to an external device such as a video deck 12
_OUT2. A control signal output from the CPU 1 is supplied to the input terminal C of the output switching circuit 7.

Here, FIG. 11 shows the configuration of the output switching circuit 7. In the figure, R1 and R2 are relays. The relay R1 is always on while the device 10 'is powered on. This allows VCR 1
The input signal supplied from 2 through the input terminal TAPE_IN2 is output from the output terminal TAPE_OUT1 to the receiving unit 5b. On the other hand, when the device 10 'is not powered on, the relay R1 is turned off, and the input signal supplied from the VCR 12 is not supplied to the receiver 5b but is output from the output terminal TAPE_OUT2 to the TV 13. Further, the relay R2 is switched between an ON state and an OFF state in accordance with a control signal supplied from the CPU 1 through the input terminal C, and when the input signal from the input terminal TAPE_IN2 is a normal audio signal, the relay R2 outputs the input signal. Output end TAPE_OU
Output from T2.

The operation of the output switching circuit 7 controlled by the CPU 1 will be described below with reference to the flowchart shown in FIG. In FIG. 12, first, when the processing of the CPU 1 proceeds to step SP1, the CPU 1 takes in the input signal supplied from the video deck 12. And step SP
In 2, it is determined whether or not the input signal supplied for 20 ms includes a signal having a constant frequency of 15.625 kHz for 12 cycles in succession. That is, here, by detecting the part of the carrier wave which is not analog-modulated in the MIDI signal from the input signal, the input signal is detected by the MIDI signal.
It is determined whether or not it is an analog modulation signal of.

Here, the reason why it becomes possible to identify whether or not the input signal is a MIDI analog modulation signal by the determination in step SP2 will be described. First, Fig. 1
When MIDI data is input to the carrier wave of 15.625 kHz shown in FIG.
It becomes the analog modulation signal shown in. In this case, in the MIDI analog modulation signal when a plurality of tones are sounded at the same time, as shown in FIG. 14, the carrier does not appear for a long period of time, but the carrier of about 12 cycles always continues for the above 20 ms. Will appear. The reason is as follows.

That is, in the performance information of the automatic piano 11, one sound is recorded by 3-byte MIDI data, and the MIDI signal corresponding to this one sound continues for 960 μsec at the time of transfer. Further, in the case of the automatic piano 11, the maximum number of sounds that can be sounded simultaneously is 16. Therefore, even if a MIDI signal corresponding to simultaneous sounding of 16 sounds is transferred, the analog-modulated portion continues. The time is 960 μsec multiplied by “16”, that is, 15.36 ms. When recording the performance of the automatic piano 11, scanning is performed every 4 ms, so the interval between MIDI signals of adjacent sounds that are not simultaneously sounded is always 4 ms or more. From this, 2
If it is about 0 ms, carrier waves of about 12 cycles will always appear.

On the other hand, when the input signal is an audio signal as shown in FIG. 15, for example, 1 shown in FIG.
It is impossible that the basic carrier of 5.625 kHz includes 12 cycles in succession. Therefore, the above step S
By the judgment of P2, it becomes possible to distinguish the MIDI analog modulation signal from other audio signals.

Now, step SP2 (see FIG. 12).
In, in the case where the input signal continuously includes a signal of a constant frequency of 15.625 kHz for 12 cycles, the determination result here is “Yes”, that is, the input signal is determined to be a MIDI analog modulation signal, Go to step SP3. At step SP3, the relay R2 is turned off. As a result, the analog analog modulation signal is converted into digital MIDI data via the receiving section 5b, and is subsequently taken into the CPU 1. And CPU
1 outputs the fetched MIDI data to the automatic piano 11 via the ACIA 4. In this way, the processing of the CPU 1 returns to step SP1 again.

On the other hand, the input signal has a constant frequency of 15.625.
When the signal of kHz is not continuously included for 12 cycles, it is determined that the determination result of step SP2 is "No", that is, the input signal is another audio signal, and the process proceeds to step SP4. In step SP4, the relay R2
Is turned on. As a result, the audio signal supplied from the video deck 12 is directly output from the output terminal TAPE_OUT2 of the output switching circuit 7 and supplied to the TV 13. Then, the processing of the CPU 1 returns to the step SP1 again.

Thus, the CPU 1 controls the video deck 12
It discriminates whether the input signal supplied from is a MIDI analog modulation signal or another audio signal, and switches the relay R2 on and off based on the discrimination result. As a result, the input signal is MIDI
If the input signal is an analog modulation signal, the MIDI data converted into a digital signal is output to the automatic piano 11, and if the input signal is an audio signal, this signal is output to the TV 13 as it is.

As described above, according to the second embodiment, by identifying the input signal supplied from the video deck 12, the video in which the MIDI analog modulation signal is recorded in one channel of the audio in the video deck 12 is recorded. The output destination of the input signal can be switched depending on whether the tape is reproduced or not. Thereby, for example, in the configuration shown in FIG. 9, both the reproduction of the MIDI signal and the reproduction of the audio signal which are synchronized with the video can be performed without changing the connection relation of each device.

Therefore, for example, with the left and right audio channels of the VCR 12 both connected to the TV 13,
By reproducing the video tape on which the analog modulation signal of IDI is recorded, it is possible to avoid erroneous reproduction such as hearing an unpleasant modulated sound from the speaker of the TV 13.

In this embodiment, as shown in FIG. 9, the TV 13 is connected to the one side audio channel of the video deck 12, but the present invention is not limited to such a structure, and the one side audio channel of the video deck 12 is also used. Various configurations other than the example shown in FIG. 9 can be made such as connecting an amplifier to. Needless to say, recording / reproduction of a MIDI analog modulation signal or audio signal may be performed in the left channel instead of the right channel as in this embodiment.

Further, in the above-described first and second embodiments, the video deck 12 is used as a recording device for recording video data and performance data, but the present invention is not limited to this.
It may be configured by using other devices such as a laser disk. Furthermore, in the above-described first and second embodiments, the performance recording / reproducing device 10 (or 10 ') and the video deck 12 (that is, the recording device) are configured separately, but the configuration is not limited to this. Alternatively, the performance recording / reproducing apparatus 10 (or 10 ') may be built in the video deck 12 (that is, recording apparatus). With such a configuration, it is possible for the operator to save the trouble of connecting the both with a cable, and the operability is further improved.

[0052]

As described above, according to the first aspect of the invention, since the video data and the performance data are simultaneously recorded on the same medium during the performance operation on the automatic performance device, the reproduction is performed. In, it is possible to always ensure the correspondence between both data. Also, since the media can be unified,
Data management is not troublesome, and the device configuration is simple, so that even general users can easily handle it. According to the invention of claim 2, in addition to the effect of the invention of claim 1, when performance data is recorded together with video data on a recording medium, the performance data is supplied to the automatic performance device. On the other hand, when data other than performance data such as an audio signal is recorded on the recording medium together with the video data, the data other than the performance data is supplied to another reproduction device and reproduced. Therefore, a different signal is not supplied to the automatic performance device or the reproduction device, and erroneous reproduction such as listening to an unpleasant modulated sound is avoided.

[Brief description of drawings]

FIG. 1 is a block diagram showing an overall configuration of a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a performance recording / reproducing apparatus 10 according to the embodiment.

FIG. 3 is a diagram showing an analog-modulated MI in the same embodiment.
It is a figure which shows the example which monitored the waveform at the time of recording of the DI signal To with the oscilloscope.

FIG. 4 is a schematic diagram illustrating an analog-modulated MI in the same embodiment.
It is a figure which shows the example which monitored the waveform at the time of reproduction | regeneration of DI signal Ti with the oscilloscope.

FIG. 5 is a block diagram showing a detailed configuration of a transmission / reception unit 5 according to the same embodiment.

FIG. 6 is a timing chart of a signal obtained by the operation of the receiving unit 5b according to the embodiment.

FIG. 7 is a diagram showing an example of encoding by the receiving section 5b.

FIG. 8 is a block diagram showing another configuration example according to the embodiment.

FIG. 9 is a block diagram showing an overall configuration of a second embodiment of the present invention.

FIG. 10 is a block diagram showing a configuration of a performance recording / reproducing apparatus 10 ′ according to the same embodiment.

FIG. 11 is a block diagram showing a configuration of an output switching circuit 7 provided in the performance recording / reproducing apparatus 10 '.

FIG. 12 is a flowchart showing a control operation of the output switching circuit 7 by the CPU 1 in the embodiment.

FIG. 13 is a diagram showing an example in which a carrier wave of a MIDI signal is monitored by an oscilloscope in the embodiment.

FIG. 14 is a diagram showing an example in which a waveform of a MIDI signal recorded when a plurality of sounds are simultaneously pronounced is monitored by an oscilloscope in the embodiment.

FIG. 15 is a diagram showing an example in which the waveform of an audio signal is monitored by an oscilloscope in the same example.

[Explanation of symbols]

1 ... CPU, 2 ... ROM, 3 ... RAM, 4 ... A
CIA, 5 ... Transceiver, 6 ... Oscillator, 7 ... Output switching circuit, 10, 10 '... Performance recording / reproducing device, 11 ...
Automatic piano, 12 ... VCR, 13 ... TV, B
US: Bus, R1, R2: Relay

Claims (2)

[Claims] 1. Performance data generated according to a performance operation on an automatic performance device and video data according to a performance scene of the performance operation are recorded, and the performance data and the video data are synchronized with each other. In the performance recording / reproducing apparatus for reproducing the performance data, when the performance is recorded, the performance data output by the automatic performance apparatus at a predetermined rate in response to the performance operation is recorded in the recording apparatus for recording the video data according to the performance scene of the performance operation. Performance recording means for transferring at a predetermined rate and writing the same on the same recording medium as the video data, and at the time of reproducing the performance, reading the video data and the performance data from the recording medium, reproducing the video data, and performing the performance. Performance reproducing means for transferring data to the automatic performance device at the predetermined rate and reproducing the performance data in synchronization with the video data. Performance recording and reproducing apparatus to be. 2. The performance recording / reproducing apparatus according to claim 1, wherein when the performance is reproduced, the read data is the performance data based on a frequency of data recorded together with the video data, which is read from the recording medium. Based on the discrimination result by the discriminating means, if it is the performance data, it is supplied to the automatic performance device, while if it is not the performance data, a reproduction different from the automatic performance device is performed. A performance recording / reproducing apparatus comprising a switching means for supplying the apparatus.