JPH10187148A - Midi standardized electronic musical instrument and electronic musical instrument system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct the tempo synchronization of each instrument using a simple operation while conducting a synchronization playing by plural MIDI (musical instrument digital interface) instruments having automatic accompaniment functions. SOLUTION: A master mode setting switch 2, which sets a musical instrument to act as a master musical instrument, and a transmitting means which transmits slave setting signal to other instruments that are MIDI connected when the switch 2 is turned on, are provided to electronic musical instruments 1a to 1d that constitute the system. Thus, if a master mode is set on a certain electronic musical instrument, slave setting signals are transmitted to other electronic musical instruments which are MIDI connected to the electronic musical instrument and no synchronization mode setting operations are required on the other electronic musical instruments in order to conduct a synchronized playing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument and an electronic musical instrument system of the MIDI standard, and more particularly, to an automatic accompaniment apparatus (rhythm machine) and an automatic performance apparatus (rhythm machine) configured to control performance according to MIDI system messages. This is suitable for use in an electronic musical instrument having a sequencer or the like.

[0002]

2. Description of the Related Art Conventionally, in an electronic musical instrument such as an electronic piano, an electronic keyboard, and a synthesizer, MIDI (Musica
l Instrument Digital Interface) Connects multiple electronic musical instruments according to the standard, generates musical tones from slave musical instruments by key operation of the master musical instrument, and performance information and accompaniment transmitted from the master musical instrument with automatic performance function and automatic accompaniment function. There has been a device that can generate a musical tone from a slave instrument according to information. In this type of electronic musical instrument, it is possible to control automatic performance and automatic accompaniment in synchronization with the MIDI timing clock (MIDI clock) sent from the master musical instrument, and perform a ensemble (sync performance) with a plurality of electronic musical instruments. Met.

Normally, an electronic musical instrument conforming to the MIDI standard is shown in FIG.
As shown in (a) to (c), there are two types, one having two terminals of MIDI in / out and one having three terminals of MIDI in / out / through. Note that the soft through function shown in FIG.
The information input from the DI device to the MIDI In
This is a function for outputting as it is as it is, and adding and outputting information generated by the own device system based on the input information.

When two electronic musical instruments are connected and played simultaneously, the MIDI out of the master musical instrument is connected to the MIDI out of the slave musical instrument.
It can be realized by connecting to the IDI in.
Also, in the type of FIG. 9A having three terminals, as shown in FIG. 10, the MIDI out of the master musical instrument is connected to the MIDI in of the first slave musical instrument, and the MIDI out of the first slave musical instrument is connected.
From the thru to the MIDI in of the next slave instrument ...
By connecting in cascade like a rosary, it is possible to play simultaneously on multiple electronic musical instruments. Even in the type shown in FIG. 9C, the MIDI Out and the MIDI In can be simultaneously connected to each other so that a plurality of electronic musical instruments can be played simultaneously.

[0005]

Generally, the above-mentioned M
An electronic musical instrument conforming to the IDI standard has a normal mode in which the device itself performs using an internal clock generated in the device,
It has a synchronous mode in which another electronic musical instrument is connected via the DI terminal and ensemble or the like is performed using a MIDI clock sent from the outside. The switching of these modes is performed by operating a predetermined operator provided on the operation panel of the electronic musical instrument.

Therefore, when performing a sync performance by external synchronization using a MIDI clock, it is necessary not only to connect a plurality of electronic musical instruments with a MIDI cable, but also to perform an operation of setting a synchronous mode in each electronic musical instrument. there were. Therefore, unless the synchronization mode is set in all the connected electronic musical instruments, the sync performance cannot be performed properly.

In general, in order to prevent the number of operators from becoming too large in an electronic musical instrument, predetermined settings are made by sequentially selecting a command menu displayed on a display using a specific operator. In many cases, the above-described mode setting is also performed in such a manner. for that reason,
The operation for setting the mode is complicated, and if there is a beginner or the like unfamiliar with the operation among the players in charge of playing the electronic musical instruments, there is a problem that it is difficult to start the sync performance.

When performing a sync performance using a MIDI clock, each slave musical instrument must also perform an operation for adjusting to the set tempo speed of the master musical instrument and an operation for instructing start / stop of automatic accompaniment or automatic performance. Did not. In this case, when a beginner, elderly person, or person with a physical disability who is not accustomed to operating the electronic musical instrument performs the operation, the timing of the start instruction may be too early or too late. There was also a problem that it could not be done.

The present invention has been made to solve such a problem, and when a plurality of MIDI devices having an automatic accompaniment function, an automatic performance function, etc. are connected to perform a sync performance, each of the devices is used. It is an object of the present invention to be able to perform tempo synchronization with a simple operation.

[0010]

A MIDI standard electronic musical instrument according to the present invention is a MIDI standard electronic musical instrument having a device that operates in accordance with a given clock signal, and is a master musical instrument when connected to another device by MIDI. A setting switch for setting the master mode, comprising a master mode operating as a master mode and a slave mode operating as a slave instrument;
In addition to the IDI message, there is provided a transmitting means for transmitting a slave setting signal to the other device when the setting switch is turned on, and a receiving means for receiving the slave setting signal in addition to the MIDI message. It is characterized by having.

According to another feature of the present invention, the transmitting means transmits a slave release signal to the other device when the setting switch is turned off, and the receiving means outputs the slave setting signal. In addition to the above, the slave release signal is also received.

Another feature of the present invention is that, when the device operates as a slave instrument by receiving the slave setting signal, control is performed so that subsequent operations of the setting switch are not accepted. is there.

Another feature of the present invention is that when the setting switch is turned on to operate as a master musical instrument, a clock signal generated by the own device is sent to the outside and sent from the outside. The present invention is characterized in that a clock signal is ignored.

Another feature of the present invention is that, when the device operates as a slave instrument by receiving the slave setting signal, the device operates in accordance with a clock signal sent from the outside and outputs the clock signal to the outside. It is characterized by doing so.

Another feature of the present invention is that when it operates as a slave instrument by receiving the slave setting signal, it does not output the performance information generated in its own device to the outside, and transmits the performance information from the outside. This is characterized in that the received performance information is ignored.

Further, the MIDI standard electronic musical instrument system of the present invention comprises a plurality of devices having the same configuration as the electronic musical instrument configured as described above, which are cascade-connected via a MIDI IN terminal and a MIDI OUT terminal.

Since the present invention comprises the above technical means, when a plurality of electronic musical instruments having an automatic accompaniment function and an automatic performance function are connected by MIDI to perform a sync performance, when a master mode is set in a certain electronic musical instrument, A slave setting signal is sent to another device MIDI-connected to the electronic musical instrument, and the other device is automatically set to the slave mode. Therefore, the other device does not need to perform any operation for setting the synchronous mode in order to perform the sync performance. Also, when an electronic musical instrument set in the master mode sets a tempo speed or instructs start or stop of an automatic accompaniment or the like, it is transmitted as a MIDI message to the other devices set in the slave mode and controlled. Therefore, there is no need to perform an operation for adjusting to the set tempo speed of the master instrument or an operation for instructing start / stop of automatic accompaniment or the like.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a configuration of the electronic musical instrument system according to the present embodiment, that is, a connection state of a plurality of electronic musical instruments. FIG. 2 is a block diagram showing a schematic configuration of the electronic musical instrument according to the present embodiment shown in FIG. It is.

In FIG. 1, reference numerals 1a to 1d denote electronic musical instruments having the same configuration.
Real-time system messages (timing clock, start, continue, stop, etc.)
An automatic accompaniment device (rhythm machine), an automatic performance device (sequencer), and the like configured to control the performance according to a message or a common message).

As shown in FIG. 1, the plurality of electronic musical instruments 1a to 1d are cascade-connected in a ring via MIDI in / out terminals. That is, M of one electronic musical instrument
The IDI out is connected to the MIDI in of the next electronic musical instrument, the MIDI out is further connected to the MIDI in of the next electronic musical instrument, and so on. Here, four electronic musical instruments 1a
-1d are cascaded, but the invention is not limited to this number.

Each of the electronic musical instruments 1a to 1d has a master mode setting switch 2, which is turned on.
By doing so, any of the electronic musical instruments 1a to 1d can operate as a master musical instrument. As will be described in detail later, when the master mode setting switch 2 is pressed on an electronic musical instrument, the other electronic musical instruments are set to operate as slave musical instruments. When the slave mode is set, a corresponding LED (not shown) is turned on.

For example, when the master mode setting switch 2 of the electronic musical instrument 1a is pressed, the electronic musical instrument 1a operates as a master musical instrument, and the other electronic musical instruments 1b to 1d operate as slave musical instruments. When the master mode setting switch 2 of the electronic musical instrument 1b is pressed, the electronic musical instrument 1b operates as a master musical instrument, and the other electronic musical instruments 1a, 1c, and 1d operate as slave musical instruments.

As described above, each of the electronic musical instruments 1a to 1d
Has a master mode that operates as a master instrument and a slave mode that operates as a slave instrument, and can operate in either mode depending on how the master mode setting switch 2 is operated. Therefore, in the case of the present embodiment, whether the electronic musical instrument operates as a master musical instrument or as a slave musical instrument is fixed depending on how the electronic musical instrument is connected, as compared with the conventional example of FIG.
There is an advantage that the electronic musical instrument operating as the master musical instrument can be freely changed without reconnecting the electronic musical instrument.

An electronic musical instrument set to the master mode
A timing clock (MIDI clock) generated in the own device is output from a MIDI out terminal to the outside. At this time, the other electronic musical instruments set in the slave mode are M
In accordance with the MIDI clock input from the IDI IN terminal, the automatic accompaniment device or the automatic performance device provided therein is controlled, and the MIDI clock input from the MIDI OUT terminal is directly output to the next electronic musical instrument.

By doing so, the MID of the master instrument
The MIDI clock output from the I-out terminal passes through the other three slave instruments in order, and passes through the MID of the master instrument.
It returns to the I-in terminal. At this time, if the device operates in accordance with the input MIDI clock in the same manner as the slave musical instrument and outputs it as it is to the next electronic musical instrument, synchronization cannot be achieved properly. Therefore, when operating as a master instrument, the MIDI clock input to the MIDI IN terminal is ignored so as not to be output to the next stage, and only the MIDI clock generated by the own device is output.
Output from the OUT terminal.

The electronic musical instrument set to the slave mode performs automatic accompaniment or automatic performance in accordance with an externally supplied MIDI clock. However, it is necessary to generate only musical tones generated by keyboard operation of the electronic musical instrument. There is, so ignore the performance information sent from outside,
A musical sound generation process is performed using only performance information generated by a keyboard operation of the own device. As a result, it is possible to prevent a musical tone played by another player from being generated on the own device. In the case of operating as a slave instrument, it is possible to prevent unnecessary information from being transferred by not outputting performance information generated by the own device to the outside.

The operation of the electronic musical instrument system configured as described above will be briefly described below. In the first stage, the master mode setting switch 2 of each of the electronic musical instruments 1a to 1d
Are set to OFF. In this state, each of the electronic musical instruments 1a to 1d is set to the normal mode in which the electronic musical instrument 1a performs independently using the internal clock generated by the electronic musical instrument, and each LED is turned off.

Here, for example, when the master mode setting switch 2 of the electronic musical instrument 1a is turned on, the electronic musical instrument 1a
Are the other electronic musical instruments 1b to 1d that are connected
At the same time as outputting a slave setting signal to MIDI, a stop signal, which is one of the MIDI system messages, is sent out to initialize all the electronic musical instruments 1a to 1d. Thereby, the electronic musical instrument 1a is set to the master mode, and the other electronic musical instruments 1b to 1d are automatically set to the slave mode. At this time, the electronic musical instruments 1b to 1d
The LED provided in is in a lighting state.

After the mode of each of the electronic musical instruments 1a to 1d is set as described above, the master musical instrument 1a controls automatic accompaniment or start / stop of automatic performance, tempo speed, and the like. That is, when a start switch, a stop switch, or a tempo speed setting operator (neither is shown) is operated on the master musical instrument 1a, a signal corresponding to the operation is transmitted to the other slave musical instruments 1b to 1d to perform control.

Thereafter, when the master mode setting switch 2 of the master musical instrument 1a is turned off, the electronic musical instrument 1a
Sends a slave release signal to the other electronic musical instruments 1b to 1d and returns to the normal mode. The electronic musical instruments 1b to 1d that have received the slave release signal also return from the slave mode to the normal mode, and the LEDs of any of the electronic musical instruments 1a to 1d return to the unlit state.

As described above, according to the present embodiment, a certain 1
If the master mode setting switch 2 is operated in one electronic musical instrument, the other electronic musical instruments are automatically set from the normal mode to the slave mode. Therefore, it is possible to set the synchronization mode in which the sync performance is performed without the player of another electronic musical instrument performing any operation. Thus, even if a beginner, an elderly person, or a person with a physical disability who is not accustomed to operating the electronic musical instrument performs a sync performance, if at least one of the users understands the function of the master mode setting switch 2, all the devices are controlled. Synchronous mode can be easily set.

Further, in this embodiment, the setting of automatic accompaniment, start / stop of automatic performance, tempo speed, and the like can be automatically performed for all devices simply by the player of the master instrument. Even when a beginner, an elderly person, or a person with a physical disability who is not accustomed to operating an electronic musical instrument performs a sync performance, synchronization can be easily achieved. Therefore, the player who is in charge of the slave instrument can fully enjoy the sync performance without having to be aware of automatic accompaniment, start / stop of automatic performance, and setting of tempo speed.

Further, in this embodiment, the master musical instrument 1
After the master mode setting switch 2a is turned ON, the other slave instruments 1
The operations performed on the master mode setting switch 2 in b to 1d are ignored. Thereby, when a person who has no knowledge of the master mode setting switch 2 performs a sync performance, even if the master mode setting switch 2 is operated erroneously, it is possible to prevent the performance from being affected at all. .

Here, an example in which four electronic musical instruments are connected in cascade has been described. However, a control box (MIDI through box) for distributing MIDI signals may be used to connect in parallel (for example, star connection). Is also possible. In addition, although an example in which the means for performing the mode control as described above is provided in each electronic musical instrument has been described, a dedicated device may be provided outside.

Next, the configuration of the electronic musical instruments 1a to 1d will be described with reference to FIG. In FIG. 2, the keyboard 1
1, operation panel section 12, CPU 13, ROM 14, RA
The M15, the automatic accompaniment unit 16, the automatic performance unit 17, the clock generation unit 18, the musical sound generation unit 19, and the MIDI interface 20 are connected to bus lines 24 such as a data bus and an address bus, respectively, for mutually transmitting and receiving data. It is configured to be.

Here, the keyboard section 11 is composed of one or a plurality of keys including a plurality of keys and a key switch provided corresponding to each of the keys. The key switch is configured to detect key depression and key release and also detect the key operation speed.

The operation panel unit 12 includes various controls (not shown) for setting tone color, rhythm, volume, effect, etc., and also includes automatic accompaniment based on automatic accompaniment data and automatic performance based on automatic performance data. Switches for controlling (start switch 12a, continue switch 12b, stop switch 12c, etc.), tempo operator 12d for setting the tempo of automatic accompaniment or automatic performance, master mode setting switch 2 and various setting states described above. An indicator 12e for displaying is arranged. The master mode setting switch 2 is provided with an LED 2a.

The CPU 13 controls the entire electronic musical instrument in accordance with the control program stored in the ROM 14 while using the RAM 15 as a work memory. For example, the CPU 13 performs a scan process of each key switch of the keyboard unit 11 and a scan process of each operator of the operation panel unit 12, and operates states of each key in the keyboard unit 11 (key pressed, released, operated). The key switch number (key number) of the key, the velocity relating to the key operation speed, etc.) and the operation state of each operator on the operation panel section 12 are detected, and various processes described later are executed in accordance with the operation of each key or each operator. I do.

The ROM 14 stores a work program of the CPU 13 and PCM tone waveform data used when the tone generator 19 forms tone data.
Several types of automatic accompaniment data and automatic performance data used for performing automatic accompaniment and automatic performance are stored as preset data.

The automatic accompaniment data includes a reference code (a C code of an accompaniment instrument such as a guitar or a piano which is set in advance according to the type of the corresponding rhythm) for specifying the type of each constituent sound. The rhythm is composed of note information including a key number, a step time indicating a sound generation timing, a gate time indicating a sound generation time, a velocity indicating a key pressing speed (magnitude of sound generation), and repeat end information including a repeat mark indicating a repeat point. A plurality of sets are stored for each type. Note that the automatic accompaniment data includes chord progression data (for example, C → Am → F →
A plurality of sets of G ₇ → C for each rhythm type may be stored.

The automatic performance data includes a tone color number for specifying the type of tone, a key number for specifying the type of key, a step time indicating a sounding timing, a gate time indicating a sounding time, and a key pressing speed (sounding speed). Size)
, And data such as repeat end information such as a repeat mark indicating a repeat point.

The RAM 15 has a storage area for temporarily storing various necessary data during the program execution process of the CPU 13 and for storing data obtained as a result of various processes. In particular, in the present embodiment, the normal mode that operates according to the internal clock of the own device, the master mode that is set by operating the master mode setting switch 2, or the slave setting that is transmitted from another electronic musical instrument via the MIDI interface 20. It has a storage area for storing any mode information (for example, flag information) of the slave mode set by the signal. As will be described later, the CPU 13 changes the control method of the entire electronic musical instrument depending on which mode is set.

The automatic accompaniment section 16 performs automatic accompaniment based on the automatic accompaniment data stored in the ROM 14. When a predetermined rhythm such as waltz or tango is selected by operating a rhythm selection switch (not shown) on the operation panel section 12 and a tempo corresponding to the selected rhythm is set by operating a tempo operator 12d, the ROM
14, the automatic accompaniment data corresponding to the selected rhythm type is repeatedly read at the set tempo.

The automatic performance section 17 is provided in the ROM 14
The automatic performance is performed based on the automatic performance data stored in the. When a predetermined automatic performance pattern is selected by operating a pattern selection switch (not shown) on the operation panel section 12, and a tempo corresponding to the selected automatic performance pattern is set by operating a tempo operator 12d, the corresponding tempo is read from the ROM 14. Automatic performance data corresponding to the selected pattern is repeatedly read at the set tempo.

Instructions for performing the above-mentioned automatic accompaniment and automatic performance are made mainly using a start switch 12a, a continue switch 12b, and a stop switch 12c, in addition to the above-mentioned rhythm selection switch and pattern selection switch. That is, the start and end of the automatic accompaniment and the automatic performance are instructed by operating the start switch 12a and the stop switch 12c. When the continuation switch 12b is pressed after the operation of the stop switch 12c, the automatic accompaniment and the automatic performance are resumed from the continuation of the ending.

The clock generator 18 is a timing clock (M) for controlling the tempo of automatic accompaniment and automatic performance.
IDI clock). When the electronic musical instrument is set to the normal mode in which the electronic musical instrument plays by itself, an automatic accompaniment sound and an automatic performance sound are formed in accordance with the internal clock generated by the clock generation unit 18. Also, M
IDI-connected systems can be synchronized by this MIDI clock, which is sent at a rate of 24 per quarter note.

The tone generator 19 is provided with a plurality of tone generating channels, and is configured to be able to simultaneously generate a plurality of tone (for example, a performance sound by operating the keyboard unit 11, an automatic accompaniment sound, an automatic performance sound). In this musical tone generating section 19, C
Based on key number information indicating each key sent from the PU 13 and tone parameter information set by operating each operation element, etc., the PCM tone waveform data is read out from the ROM 14 and its amplitude and envelope are processed. The set effect is applied to form musical data in digital data format.

The digital tone data generated by the tone generator 19 is converted by the D / A converter 21 into an analog tone signal. The tone signal is amplified by the amplifier 22 and then supplied to the speaker 23 for sound emission.

The MIDI interface 20 is a MIDI (Musical Instrument) which is a connection standard between an electronic musical instrument and an external device.
information (various tone parameter information, real-time messages such as MIDI clock, start, continue, stop, etc., common messages, slave setting signal, slave release signal, tempo speed, etc.) (Including information).

FIGS. 3 to 5 are conceptual diagrams for explaining each mode switched by the CPU 13. FIG.
Switching according to each mode described here is performed by C
This is realized by software executed by the PU 13 according to a work program in the ROM 14.

In FIG. 3 to FIG.
1, the MIDI out terminal 32 is the MIDI out terminal 32 shown in FIG.
It corresponds to the interface 20. MIDI-in terminal 31
Are various MIs including tempo speed information from external devices.
Input DI message and performance information. Also, MIDI
The out terminal 32 is used to output various M information including performance information generated by operating the keyboard 11 of the own device and tempo speed information.
Output an IDI message.

First, the switching operation between the normal mode, the master mode, and the slave mode will be described with reference to FIG. In FIG. 3, reference numeral 33 denotes a mode controller, which is an ON / O of the master mode setting switch 2.
The mode is changed according to the reception of the FF or the slave setting / release signal, or the slave setting signal or the slave release signal is transmitted to the external device. This mode controller 33
Is mainly configured by the CPU 13 of FIG.

When the master mode setting switch 2 is turned on in the normal mode shown in FIG. 3A, the mode controller 33 sets the own device to the master mode and sets the external device to the slave mode. , A slave setting signal is output from the MIDI out terminal 32. On the other hand, when a slave setting signal is input from the MIDI-in terminal 31 in the normal mode, the mode controller 33 sets its own device to the slave mode. The input slave setting signal is output as it is from the MIDI out terminal 32 to an external device connected to the next stage.

When the master mode is set as shown in FIG. 3B, the mode controller 33 sends a slave release signal to return the external device from the slave mode to the normal mode in response to the OFF operation of the master mode setting switch 2. The signal is output from the MIDI out terminal 32, and the own device returns to the normal mode. In the master mode, the slave setting signal and the slave release signal input from the MIDI-in terminal 31 are ignored.

Further, at the time of setting the slave mode shown in FIG. 3C, the mode controller 33 returns its own device from the slave mode to the normal mode in response to the slave release signal input to the MIDI-in terminal 31. The slave release signal input from the MIDI-in terminal 31 is also output from the MIDI-out terminal 32 to an external device connected to the next stage.

Next, referring to FIG. 4, tempo speed information exchanged in each mode and a timing clock (M
The following describes system real-time messages such as IDI clock), start, continue, and stop.

In FIG. 4, the tempo controller 34,
The tempo generator 35 corresponds to the clock generator 18 shown in FIG. The tempo controller 34 sets the tempo speed according to the operation of the tempo operator 12d of the operation panel unit 12. The tempo generator 35 generates a timing clock according to tempo speed information set by the tempo controller 34 or tempo speed information input from an external device.

The rhythm generator 36 corresponds to the automatic accompaniment section 16 shown in FIG. 2, and generates accompaniment information for automatic accompaniment according to the timing clock generated by the tempo generator 35. The accompaniment information generated by the rhythm generator 36 is
After being added to the performance information generated by the operation of the keyboard section 11 and, depending on the mode, to the performance information input from an external device, it is supplied to the musical tone generating section 19 and the corresponding musical tone is generated.

Although the rhythm generator 36 is shown here as an example, a sequencer corresponding to the automatic performance section 17 in FIG. 2 may be provided instead, or both may be provided. In addition, any device that performs control along a time axis according to a predetermined clock, such as a display control device that displays lyrics in time with a performance, can be used.

FIG. 4A shows a state in which the master mode has been set by operating the master mode setting switch 2 (the same applies to the normal mode). In this state, the tempo speed value generated by the tempo controller 34 is MID given to tempo generator 35 and generated here
The rhythm generator 36 is controlled according to the I clock. The tempo speed value generated by the tempo controller 34 is also supplied from the MIDI out terminal 32 to an external device.

The tempo speed value output from the MIDI out terminal 32 and sequentially returned to the MIDI in terminal 31 through a plurality of external devices is calculated by a tempo generator 35.
The tempo speed value generated by the tempo controller 34 of the own device is not given to the tempo generator 35
Supplied to Further, the tempo speed value returned to the MIDI-in terminal 31 is not supplied to the next external device, and only the tempo speed value generated by the tempo controller 34 is output from the MIDI-out terminal 32.

In the MIDI standard, there are two methods of tempo control: a method of transmitting a tempo speed value and a method of transmitting a timing clock (MIDI clock) itself. The former example is shown here. In the latter case, the MIDI clock generated by the tempo generator 35, instead of the tempo speed value generated by the tempo controller 34, may be supplied from the MIDI out terminal 32 to the external device.

As for other system real-time messages, similarly to the tempo speed information, those generated by the electronic musical instrument set in the master mode are the MIDs.
The signal is supplied from the I-out terminal 32 to an external device set in the slave mode, and control such as automatic accompaniment or automatic performance start / stop of the slave musical instrument is performed.
In the master mode, the system real-time message input from the MIDI-in terminal 31 is ignored.

That is, the start / stop of the automatic accompaniment is instructed by the electronic musical instrument set in the master mode, and the start signal and the stop signal are transmitted to the MIDI out terminal 3.
2 to an external device. In the electronic musical instrument set to the slave mode, the rhythm generator 36 is controlled in accordance with a start signal and a stop signal input from the MIDI-in terminal 31, and those signals are supplied from the MIDI-out terminal 32 as they are to the next external device. .

FIG. 4B shows a state where the slave mode is set by receiving the slave setting signal.
In this state, the rhythm generator 36 outputs the tempo generator 3 from the external device via the MIDI-in terminal 31.
5 is controlled in accordance with the tempo speed value input.
At this time, the tempo speed value generated by the tempo controller 34 is not supplied to the tempo generator 35. Therefore, when performing a sync performance,
This is done only according to the tempo speed value generated by the tempo controller 34 of the master instrument. The above MID
The tempo speed value input from the I-in terminal 31 is output as it is from the MIDI out terminal 32 to an external device at the next stage.

As a method of tempo control,
When the method of transmitting the MIDI clock itself is employed as described above, the MIDI clock input to the MIDI-in terminal 31 is used.
The DI clock may be directly supplied to the rhythm generator 36 instead of the tempo generator 35.

FIG. 4C shows the prior art for reference. As described in the description of the related art, a conventional electronic musical instrument does not have a concept of a master mode or a slave mode, and it is necessary to set a synchronous mode for performing a sync performance, a tempo speed, and the like on each electronic musical instrument. (See paragraphs 0006-0008). The sink controller 37 controls such settings. In this conventional example, a tempo controller 3 inside each electronic musical instrument is used.
The timing clock is generated by the tempo generator 35 in accordance with the tempo speed value generated in step 4.

FIG. 5 shows performance information generated by keyboard operation and the like. FIG. 5A shows a state in which the master mode has been set by operating the master mode setting switch 2. In this state, the key information generated by operating the keyboard 11 and the operation panel 1
The parameter information generated by the operation 2 is supplied to the musical tone generator 19 and also supplied from the MIDI out terminal 32 to the next external device. On the other hand, M
Performance information input via the IDI in terminal 31 is ignored.

Regarding the performance information output from the MIDI out terminal 32, a general MIDI instrument can be set during connection and used as a master instrument. It is also possible to control the slave instrument by a specific status (for example, master volume or tone).

FIG. 5B shows a state in which the slave mode is set by receiving the slave setting signal.
In this state, the key information generated by operating the keyboard section 11 and the parameter information generated by operating the operation panel section 12 are only supplied to the musical tone generating section 19 and the MID
No signal is output from the I-out terminal 32 to the outside. On the other hand, performance information input from an external device via the MIDI in terminal 31 is output as it is from the MIDI out terminal 32 to the outside, and is ignored in the slave musical instrument. This allows
In the case of a slave musical instrument, only musical sounds generated by its own device can be produced by a keyboard operation or the like.

As described above, when the slave musical instrument is controlled from the master musical instrument according to a specific status (for example, master volume or tone), the slave musical instrument is configured as shown on the right side of FIG. That is, the performance information input from the external device to the MIDI-in terminal 31 is also supplied to the filter 38. The specific status information obtained by this filtering is added to the adder 39 by the adder 39.
It is added to the performance information generated by operating the keyboard section 11 and the operation panel section 12 and supplied to the musical tone generating section 19.

FIG. 5C shows a state in which the electronic musical instrument is set to the normal mode. In this state, the performance information generated by operating the keyboard section 11 and the operation panel section 12 is supplied from the MIDI out terminal 32 to an external device at the next stage, and the musical tone generating section 1
9. That is, the generated performance information is added by the adder 39 to the performance information supplied from the external device via the MIDI-in terminal 31 before being supplied to the musical tone generating section 19, and the added performance information is obtained. Tone generator 19
Supplied to

FIG. 5D shows the prior art for reference. The performance information is also controlled by the sync controller 37 in the same manner as the system real-time message. For example, the keyboard unit 11 and the operation panel unit 1
The performance information generated by the operation 2 is only supplied to the next-stage external device from the MIDI out terminal 32 via the sync controller 37, but is not supplied to the musical sound generator 19. The performance information supplied to the tone generator 19 is MI
Only the performance information input from the external device via the DI-in terminal 31.

Next, an example of the processing performed by the CPU 13 will be described with reference to the flowcharts of FIGS. Prior to the description, the operation modes represented by ON / OFF of the flags switched by the CPU 13 are shown in Table 1 below.

[0075]

[Table 1]

As shown in Table 1, the normal mode is set when both the master flag and the slave flag are OFF, the master mode is set when only the master flag is ON, and the slave mode is set when only the slave flag is ON. Is set to

First, the operation when the master mode setting switch 2 is operated will be described with reference to the flowchart of FIG. In FIG. 6, first, in step P1,
MIDI master / slave (M / S) flag is OFF
It is determined whether or not the processing is OFF, and if it is OFF, the processing is terminated without doing anything. The MIDI M / S flag is a flag indicating whether or not the state of the master mode setting switch 2 has changed, and is set to ON when the state has changed.

If it is determined in step P1 that the MIDI M / S flag is ON, the flow advances to step P2 to determine whether the master mode setting switch 2 has been turned ON. Here, when the master mode setting switch 2 is turned on, the process proceeds to step P3, and when it is not turned on (that is, when the master mode setting switch 2 is turned off), the process proceeds to step P8.

When the operation proceeds to step P3, the M / S switch flag is first turned on in step P3. The M / S switch flag is a software flag indicating the state of the master mode setting switch 2 provided in the device. Then, in the next steps P4 and P5, the master mode is set by turning on the master flag and turning off the slave flag. In the next step P6, the slave setting signal is output to another MIDI-connected external device, and in step P7, the LED 2a is turned off, and the process ends.

On the other hand, when the operation proceeds to step P8, the M / S switch flag is turned off at step P8. Then, the next step P9 and step P10
Thus, the normal mode is set by turning off the master flag and turning off the slave flag. In the next step P11, the slave release signal is
Output to another external device connected to DI, and
In step 12, the LED 2a is turned off, and the process ends.

Next, the MIDI in terminal 31 shown in FIGS.
Will be described with reference to the flowchart of FIG. In FIG. 7, first, in step P21, by checking the flag information as shown in Table 1 stored in the RAM 15, it is determined whether or not the currently set mode is the normal mode.

If the mode is set to the normal mode, the process proceeds to step P34. If not, the process proceeds to step P22 to determine whether the mode is set to the slave mode. When the slave mode is not set, it means that the master mode is set. In this case, since the operation is performed according to the flowchart of FIG. 6 described above, the process of FIG. The process ends.

On the other hand, if it is determined in step P22 that the slave mode has been set, the process proceeds to step P23, where the data input to the MIDI-in terminal 31
I system real-time message (tempo speed value that is the source of MIDI clock, start signal,
(Continue signal, stop signal, etc.).

If the input data is a system real-time message, the flow advances to step P24 to set the input system real-time message in the tempo generator 35. Also, the next step P
At 25, the input system real-time message is supplied to the MIDI out terminal 32 (note that
The operation of the MIDI out terminal 32 will be described later with reference to FIG.

If it is determined in step P23 that the input data is not a system real-time message, the flow advances to step P26 to determine whether the input data is mode change data. If the input data is not mode change data (for example, performance information generated by an external device), the process proceeds to step P25 where the input information is transferred to the MIDI out terminal 3.
Feed to 2. On the other hand, if it is mode change data,
In Steps P27 and P28, it is determined whether the signal is a slave setting signal or a slave release signal.

Here, since the own device has already been set to the slave mode, if the input data is a slave setting signal, the process proceeds to step P25 and the slave setting signal is sent to the MIDI out terminal 32. The process is completed only by supplying. Also, when the input data is neither the slave setting signal nor the slave release signal (in this case, an error occurs), the processing is terminated only by performing the processing of step P25.

On the other hand, if the input data is a slave release signal, the flow advances to step P29 to supply the slave release signal to the MIDI out terminal 32. In the next step P30 and step P31, by turning off both the master flag and the slave flag,
Set to normal mode. Then, after turning off the LED 2a in the next step P32, a software process for setting the master mode is performed in a step P33, and the process ends.

When the process proceeds from step P21 to step P34, that is, when the currently set mode is the normal mode, first, in step P34,
It is determined whether the input data is mode change data. If the input data is not mode change data, the process proceeds to step P35, in which a normal process of performing the performance by itself is performed, and the process ends. on the other hand,
If it is mode change data, it is determined in step P36 and step P37 whether the data is a slave release signal or a slave setting signal.

At this time, since the own device is set to the normal mode which is neither the master mode nor the slave mode, if the input data is the slave release signal, the process is terminated without performing any subsequent processes. I do. Also,
When neither the slave release signal nor the slave setting signal (an error occurs in this case), the subsequent processing is not performed.

On the other hand, if the input data is a slave setting signal, the flow advances to step P 38 to supply the slave setting signal to the MIDI out terminal 32. In the next step P39 and step P40, the master flag is turned off and the slave flag is turned on to set the slave mode. Then, after the LED 2a is turned on in the next step P41, software processing for setting the slave mode is performed in step P42, and the processing ends.

Next, the MIDI out terminal 3 shown in FIGS.
8 shows the processing performed when data is output from FIG.
This will be described according to the flowchart of FIG. In FIG. 8, first, in step P51, it is determined whether the currently set mode is the normal mode.

Here, when the normal mode is set, the process jumps to step P55 where the MIDI out terminal 3
2 outputs all information supplied to the external device. On the other hand, when the mode is not the normal mode, it means that either the slave mode or the master mode is set. In this case, in steps S52 to S54, the MID
It is determined whether the data supplied to the I-out terminal 32 corresponds to any of MIDI system real-time message, mode change data, and performance information.
If any of the conditions is satisfied, the process jumps to Step P55, and outputs the supplied data to the external device via the MIDI out terminal 32.

The supplied data is stored in the system
If it is determined that none of the real-time message, the mode change data, and the performance information is present, Step P5
The processing is terminated without performing the processing of step 5. That is, in the present embodiment, when the normal mode is set, all information supplied to the MIDI out terminal 32 is output as MIDI,
When the master mode and the slave mode are set, all of the information except for the error information is output to the external device via the MIDI out terminal 32.

[0094]

As described above, in addition to the setting switch for setting the master mode and the MIDI message including the clock signal, the electronic musical instrument of the present invention transmits the slave setting signal when the setting switch is turned on. Since a transmission means for transmitting to other MIDI-connected equipment is provided, when a system is constructed by connecting a plurality of electronic musical instruments, when a master mode is set in a certain electronic musical instrument,
A slave setting signal can be sent to another electronic musical instrument MIDI-connected to the electronic musical instrument to automatically set the other electronic musical instrument to the slave mode. Therefore, in the other electronic musical instruments, it is not necessary to perform any operation for setting the synchronous mode in order to perform the sync performance.
In addition, when the tempo speed is set or the start or stop of the automatic accompaniment is instructed by the electronic musical instrument set in the master mode, the MIDI message is sent to the electronic musical instrument set in the slave mode as a MIDI message, and the control is performed. Therefore, the player of the device serving as the slave instrument does not need to perform an operation to match the set tempo speed of the master instrument or an operation to instruct start / stop of automatic accompaniment or the like. Thus, even when a beginner, an elderly person, or a person with a physical disability who is not accustomed to operating the electronic musical instrument performs a sync performance, the tempo synchronization of each device can be performed by a simple operation.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a configuration of an electronic musical instrument system according to an embodiment, that is, a connection state of a plurality of electronic musical instruments.

FIG. 2 is a block diagram illustrating a schematic configuration of the electronic musical instrument according to the present embodiment.

FIG. 3 is a diagram for explaining a switching operation of each mode of a normal mode, a master mode, and a slave mode.

FIG. 4 is a diagram for explaining system real-time messages exchanged in each mode switched by a CPU.

FIG. 5 is a diagram for explaining performance information exchanged in each mode switched by a CPU.

FIG. 6 is a flowchart illustrating an operation when a master mode setting switch is operated.

FIG. 7 is a flowchart illustrating processing performed when data is input to a MIDI-in terminal (processing performed by a MIDI-in controller).

FIG. 8 is a flowchart showing processing performed when data is output from a MIDI out terminal (processing performed by a MIDI out controller).

FIG. 9 is a diagram showing a typical terminal configuration example of the MIDI standard.

FIG. 10 is a diagram showing a configuration of a conventional electronic musical instrument system, that is, a connection state of a plurality of electronic musical instruments.

[Explanation of symbols]

 1a to 1d Electronic musical instrument 2 Master mode setting switch 2a LED 12 Operation panel unit 12a Start switch 12b Continue switch 12c Stop switch 12d Tempo operator 13 CPU 14 ROM 15 RAM 16 Automatic accompaniment unit 17 Automatic performance unit 18 Clock generation unit 20 MIDI interface 31 MIDI-in terminal 32 MIDI-out terminal 33 Mode controller 34 Tempo controller 35 Tempo generator 36 Rhythm generator

Claims (7)

[Claims] 1. A MIDI standard electronic musical instrument having a device that operates in accordance with a given clock signal, comprising: a master mode that operates as a master musical instrument and a slave mode that operates as a slave musical instrument when MIDI-connected to another device. A setting switch for setting the master mode; and transmitting means for transmitting a slave setting signal to the other device when the setting switch is turned on, in addition to the MIDI message including the clock signal. Receiving means for receiving the slave setting signal in addition to the MIDI message.
Electronic musical instrument of I standard. 2. The transmitting means sends a slave release signal to the other device when the setting switch is turned off, and the receiving means also receives the slave release signal in addition to the slave setting signal. The electronic musical instrument of the MIDI standard according to claim 1, wherein: 3. The MIDI standard according to claim 1, wherein when the slave device operates as a slave instrument by receiving the slave setting signal, a subsequent operation of the setting switch is not accepted. Electronic musical instruments. 4. When the setting switch is turned on to operate as a master musical instrument, a clock signal generated by the own device is sent to the outside, and a clock signal sent from the outside is ignored. The MIDI standard electronic musical instrument according to any one of claims 1 to 3, wherein: 5. When operating as a slave instrument by receiving the slave setting signal, the apparatus operates in accordance with a clock signal sent from the outside and outputs the clock signal to the outside. Item 6. The electronic musical instrument of the MIDI standard according to any one of Items 1 to 3. 6. When the slave device operates as a slave instrument by receiving the slave setting signal, the performance information generated by the own device is not output to the outside, and the performance information sent from the outside is ignored. The electronic musical instrument of the MIDI standard according to claim 5, wherein: 7. A plurality of devices having the same configuration as the electronic musical instrument according to any one of claims 1 to 6, comprising
MI that is cascaded and connected via a DI out terminal
DI standard electronic musical instrument system.