JPH0659671A - Musical performance information communication device - Google Patents

Abstract

PURPOSE:To provide a musical performance information communication device capable of carrying out an ensemble performance of high performance dignity by way of uniforming sound production timing especially under constitution containing acoustic automatic performance. CONSTITUTION:On an RAM of a performance information communication device, a temporary buffer to temporarily store performance information sent from a reception part 17, a time waiting buffer 21 to store its performance information for each of sixteen channels, a transmission buffer 22 to temporarily store performance information to transmit and other regions and provided. Additionally, a changing time amount (delay amount) for each of the channels for transmission timing is set by a delay amount setting part 23 in accordance with an MIDI instrument to carry out ensemble performance. That is, by operating the delay amount setting part 23, the delay amount is set and changed, and it is stored in a delay register 24 set for each of the channels.

Description

Detailed Description of the Invention

[0001]

The present invention relates to MIDI (Musical I
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a performance information communication device conforming to the Instrument Digital Interface standard, and more particularly to a performance information communication device capable of performing an ensemble performance by using a MIDI device that receives MIDI information and generates a musical sound to perform a performance.

[0002]

2. Description of the Related Art In recent years, as the number of electronic musical instruments (MIDI equipment) equipped with MIDI information input / output terminals has increased, there is an opportunity to perform an ensemble performance by connecting and combining a plurality of MIDI equipment with a communication cable. It has increased. In addition, acoustic musical instruments other than electronic musical instruments, such as pianos, have been developed so-called automatic playing pianos configured to automatically play according to MIDI information, and ensemble performances including these are also performed.

[0003]

However, when performing an ensemble performance using a plurality of MIDI devices having various configurations as described above, there are the following problems, and it may not always be possible to perform a suitable performance. .

That is, in the case where performance information consisting of a plurality of channels is read out by, for example, a sequencer and transmitted to the MIDI equipment for each channel to perform an ensemble performance, a signal for instructing sounding is produced depending on the characteristics of each MIDI equipment. Since the time from the transmission of the (pronunciation signal) to the pronunciation is different, the timing of the pronunciation in the performance may not match. Therefore, there is a problem in that the quality of performance deteriorates due to the deviation of the timing of sound generation.

Particularly in an acoustic musical instrument such as a piano, it takes about several tens to 100 ms from the start of movement of the key by the sounding signal until the hammer strikes the strings. There was a big problem that the ensemble performance could not be executed.

The present invention has been made in order to solve the above-mentioned problems, and particularly performance information capable of performing a high-quality ensemble performance by aligning the sounding timing under the configuration including automatic acoustic performance. An object is to provide a communication device.

[0007]

In order to achieve the above object, the invention of claim 1 is, as illustrated in FIG. 1, a receiving means M1 for receiving MIDI information of a plurality of channels, and the receiving means M1. Storage means M2 for temporarily storing the received MIDI information, and MID stored in the storage means M2
Reading means M3 for reading the I information and transmitting means M4 for transmitting the MIDI information read by the reading means M3.
And a timing changing means M5 for changing the transmission timing of each channel transmitted by the transmitting means M4, and a transmission timing change time changed by the timing changing means M5. The performance information communication device is characterized by including a change time setting means M6 for setting.

Further, the invention of claim 2 is characterized in that the musical performance information communication apparatus according to claim 1 further comprises a musical tone generating means for electronically generating a musical tone according to the MIDI information of each channel. And

[0009]

According to the invention of claim 1 having the above structure, the receiving means M1 receives the MIDI information of a plurality of channels,
The received MIDI information is temporarily stored by the storage means M2. Next, the read means M3 causes the MI of the storage means M2.
The DI information is read out, and the MIDI information is transmitted by the transmission means M4.

Then, the change time setting means M6 sets a change time of the transmission timing, and the timing change means M5 changes the transmission timing of each channel based on the set transmission timing. That is,
According to the present invention, by appropriately setting the transmission timing of MIDI information, it is possible to improve the performance quality by adjusting the tone generation timing of a plurality of MIDI devices including acoustic musical instruments such as an automatically playing piano.

According to the second aspect of the invention, which is provided with the musical tone generating means, according to the MIDI information of each channel,
Musical sounds can be generated electronically to achieve a performance with consistent timing.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 shows an example of a configuration in which an ensemble performance is performed using the performance information communication device 1 of this embodiment.

As shown in FIG. 2, the sequencer 3 to which the floppy disk 2 storing performance information is mounted is connected to the performance information communication device 1, and the performance information is supplied from the sequencer 3 to the performance information communication device 1. It The performance information communication device 1 is provided with the MID of the automatic performance piano 5, electronic organ 6, drum machine 7 and MIDI sound source 8.
The performance information communication device 1 is connected to the I-apparatus, and performance information of which sound generation timing is adjusted is transmitted.

FIG. 3 is a block diagram showing the main electrical structure of the performance information communication device 1, and FIG. 4 is a block diagram showing the internal structure of the performance information communication device 1 and its signal path in more detail. . As shown in FIG. 3, the performance information communication device 1
Is composed of a CPU 10 which is the center of the control device, a ROM 11 which stores control programs and the like, a RAM 12 which temporarily stores (backup) performance information and the like, a timer 14, an input / output interface 15 and a bus 16 which connects them. , The input / output interface 15
MIDI that receives MIDI information from the sequencer 3
MID for the receiving unit 17 and each MIDI device 5, 6, 7, 8
A MIDI transmitter 18 for transmitting I information is connected.

As shown in FIG. 4, the RAM 12 has a temporary buffer 20 for temporarily storing the performance information sent from the receiving unit 17, and a time waiting buffer 21 for storing the performance information for each of 16 channels. An area such as a transmission buffer 22 for temporarily storing performance information to be transmitted is provided. In addition, the timer counter 25 is
It receives a signal from and advances every 5 ms.

Further, the delay amount setting unit 23 provided in the performance information communication device 1 sets the amount of change time (delay amount) of the transmission timing for each channel according to the MIDI device for performing the ensemble performance. In other words, the delay amount is set and changed by operating the delay amount setting unit 23 and stored in the delay register 24 set for each channel.

Now, the MIDI information input to the performance information communication device 1 of this embodiment will be described. As shown in Table 1 below, the event data forming the MIDI information is usually 1 byte status byte (1st byte) and 2 bytes data byte (2nd, 3rd bytes) as shown in Table 1 below. (3) as one unit of data.

Of these, the status byte contains a status indicating keystroke (note on), key release (note off), program change, etc., and a channel code indicating which instrument (16 types) of event data each event data is. And are set. Further, in the data byte, data indicating a note number (pitch) indicating a key type, velocity (volume) indicating a key tapping speed, and the like are set.

[0019]

[Table 1]

Next, the control process performed by the performance information communication device 1 having the above-mentioned configuration will be described with reference to the flow charts of FIGS. 4 and 5 to 7. 5 is a main routine for setting the delay amount, FIG. 6 is a MIDI reception interrupt routine performed when a MIDI signal is received, and FIG. 7 is performed based on the operation of the timer 14. This is a timer interrupt processing routine.

First, as shown in FIG. 5, when the power is turned on, in step (hereinafter step is referred to as S) 100,
Clear the buffers 21 of all channels. Continued S11
At 0, based on the signal from the delay amount setting unit 23, it is determined whether or not there is a change in the delay amount setting. If an affirmative determination is made here, the process proceeds to S120, while if a negative determination is made, the process stands by.

In S120, the contents of the delay register 24 are changed to the newly set delay amount, and S110 is set.
Return to. That is, the processing of S100 to S120 is processing for holding or updating the delay amount, and unless the delay amount is changed, the delay amount previously set according to the MIDI device is used as it is.

Next, as shown in FIG. 6, the MIDI receiving unit 1
When the MIDI signal is input to 7, the received data is read into the temporary buffer 20 in S200. Continued S
At 210, it is determined whether or not the received data is data completed as a MIDI message, and if a negative determination is made here, the present process is once terminated to subsequently read the data, while an affirmative determination is made. And the process proceeds to S220.

In S220, it is determined whether or not the received data is a channel message instructing the operation for each channel. If an affirmative determination is made here, the process proceeds to S230. S230
Then, a time stamp, which is current time information, is added to the channel message, and the process proceeds to S240. That is, the time information used when adjusting the transmission timing described later is recorded together with the channel message. Therefore, in this processing, the sound is usually produced after the time of the time stamp.

In S240, the contents of the temporary buffer 20 are transferred to the time waiting buffer 21 of the corresponding channel. In the following S250, only the data bytes of the temporary buffer 20 are cleared, and this processing is once terminated.

On the other hand, a negative determination is made in S220, that is, it is determined that the received data is not a channel message but a common message such as control data, and the process proceeds to S26.
At 0, the contents of the temporary buffer 20 are M
IDI is output and the process proceeds to S250.

That is, in the processing in S200 to 250, if the read received data is a channel message, the data is sequentially stored for each channel, while if it is not a channel message, such as control data, the data is stored as it is. This is a process for transmitting.

Next, as shown in FIG. 7, in S300, the data stored in each waiting buffer 21 is transferred to the channel 1
In order to perform the processing sequentially from, the processing channel number is first set to 1. In subsequent S310, the one-message transmission buffer 22 is transferred from the time waiting buffer 21 corresponding to the set processing channel number.

In subsequent S320, it is determined whether or not the time stamp added to the transferred message is less than or equal to the value obtained by subtracting the delay amount (delay register value) stored in the delay register 24 from the time counter value. To do. If an affirmative judgment is made here, the routine proceeds to S340, while if a negative judgment is made, the routine proceeds to S350. That is, this process compares the value obtained by subtracting the delay amount from the time counter value advanced from the time of the time stamp with the value of the time stamp to obtain the difference (that is, the delay amount).
This is the process of delaying the timing of pronunciation.

At S340, since it is determined at S330 that the predetermined output timing has been reached, the transmission buffer 2
The contents of 2 are output by MIDI, and in the subsequent S350, the processing channel number is incremented. In the following S360, it is determined whether or not the incremented processing channel number exceeds 16, and if an affirmative determination is made here, S31
Returning to 0, the same comparison and transmission processing as described above is performed on the data of the next processing channel number. on the other hand,
If a negative determination is made here, the process advances to step S370, the time counter value is incremented, and the present process ends.

That is, in the processing of S300 to S370, it is checked in sequence for each channel whether or not it is the timing at which the performance data should be output, and each M is sequentially processed.
This is a process for transmitting MIDI information to an IDI device. In this way, in the performance information communication device 1 of the present embodiment, each channel message of the received MIDI data is stored in the time waiting buffer 21. Then, by comparing the time stamp value of the channel message stored in each time waiting buffer 21 with the value obtained by subtracting the delay amount from the time counter value, the optimum value is obtained according to the delay amount set for each channel. It can be transmitted to each MIDI device at various timings. As a result, each MIDI device performs a sounding operation based on the MIDI information adjusted to an appropriate sounding timing, so that it is possible to perform an ensemble performance of excellent quality with no deviation in performance.

Although the embodiments have been described above, the present invention is not limited to the above embodiments and can be implemented in various modes.

[0033]

As described above, according to the present invention, the change time setting means sets the change time of the MIDI information transmission timing, and based on the set transmission timing, the timing changing means sets each channel. The transmission timing of can be changed.

That is, in the present invention, since the transmission timing of MIDI information can be set appropriately, a plurality of MIDs including acoustic musical instruments such as an automatically playing piano can be set.
By appropriately adjusting the sounding timing of the I equipment, it is possible to perform an excellent-quality ensemble performance.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating a basic configuration of the present invention.

FIG. 2 is an explanatory diagram showing a system configuration of an ensemble performance using the performance information communication device according to the present embodiment.

FIG. 3 is a block diagram showing a main electrical configuration of a performance information communication device.

FIG. 4 is a block diagram showing a flow of communication data of a performance information communication device.

FIG. 5 is a flowchart showing a main routine of a process performed in the performance information communication device.

FIG. 6 is a flowchart showing a MIDI reception interrupt processing routine performed by the performance information communication device.

FIG. 7 is a flowchart showing a timer interrupt processing routine performed in the performance information communication device.

[Explanation of symbols]

1 ... Performance information communication device 3 ... Sequencer 5, 6, 7, 8 ... MIDI device 14 ... Timer 17 ... MIDI receiving unit 18 ... MIDI
Transmitter

Claims (2)

[Claims] 1. A receiving means for receiving MIDI information of a plurality of channels, a storing means for temporarily storing the MIDI information received by the receiving means, a reading means for reading the MIDI information stored in the storing means, and the reading means. In a performance information communication device comprising: a transmission unit for transmitting the MIDI information read out by the above; and a timing changing unit for changing the transmission timing of each of the channels transmitted by the transmitting unit, And a change time setting means for setting a change time of transmission timing. 2. The performance information communication apparatus according to claim 1, further comprising a musical tone generating means for electronically generating a musical tone according to the MIDI information of each channel.