JPH06102865A - Electronic musical instrument - Google Patents

Abstract

PURPOSE:To obtain the electronic musical instrument whose timbre can automatically be set from an electronic musical instrument main body by equipping the electronic musical instrument with a discriminating means and a timbre setting means which converts a signal to a signal format matching the kind of a machine on the basis of the output of the discriminating means and outputs the signal to an external sound source module. CONSTITUTION:A MIDI signal input part 40 receives a MIDI signal inputted from the external sound source module and outputs it to an exclusive data generation part 41. This data generation part 41 discriminates the kind of the external sound source module or timbre setting information from the received MIDI data, converts the timbre setting information to standard information, and stores it in an external timbre setting information storage part 42, or reads external timbre setting information out of the storage part 42, converts the information to the format matching the discriminated kind, and transfers it to the external sound source module through a MIDI signal output part 36. Therefore, timbres can be set even on a different kind of external sound source module so as to correspond to timbre selection switches 38 of the electronic musical instrument main body.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to electronic musical instruments, and in particular,
The present invention relates to an electronic musical instrument capable of automatically setting a tone color of a connected external sound source module.

[0002]

2. Description of the Related Art Some conventional electronic musical instruments, for example, electronic pianos, are provided with input / output terminals for MIDI signals. In such an electronic piano, by connecting a sound source module to the outside, it is possible to perform with a musical sound of a tone color that the electronic piano does not have.

FIG. 6 is a functional block diagram when a conventional electronic piano and sound source module are connected. The outline of the operation will be described below with reference to the drawings. The key-on / off information output from the keyboard / key-depression detection unit 31 is assigned to each sound generation channel of the sound generation unit 33 by the sound generation allocation unit (assigner) 32, and the music sound generation unit 33 generates a sound signal. The generated tone signal is amplified by the amplifier section 34, and a tone is generated from the speaker 35.

On the other hand, the MIDI signal output section 36 transmits the key-on / off information as a MIDI signal to the outside. The tone generator 37 of the external tone generator module generates a tone signal based on the input MIDI signal and outputs it to the amplifier 34. Note that in this case, the external sound source module is
It is set in advance so that tone signals of different desired tone colors are generated corresponding to the DI channels.

The tone color selection switch 38 inputs tone color selection information of an internal sound source or an external sound source, and based on the information, the tone generation section 33 controls the setting of the internal tone color and the on / off of the internal sounding means. MIDI signal output section 3
6, MIDI signal transmission on / off, MIDI
Controls settings such as transmission channel settings.

[0006]

In the system as described above, in the external tone generator module, it is necessary to previously assign the part to be sounded to the MIDI channel. If the module does not have the backup function, the battery is exhausted. If it did not work, or if the module was replaced, the MID
There was a problem that the I channel had to be reset.

An object of the present invention is to improve the above-mentioned problems of the prior art, and to make the tone color correspond to the tone color selection switch of the electronic musical instrument body even in external tone generator modules of different models, from the electronic musical instrument body. An object is to provide an electronic musical instrument capable of automatically setting a tone color.

[0008]

According to the present invention, in an electronic musical instrument connected to an external tone generator module via a MIDI signal input / output unit, a storage unit for storing tone color setting information of the external tone generator module, and the external tone generator. An identification unit for identifying the model of the module and the tone color setting information of the external tone generator module stored in the storage unit are converted into a signal format suitable for the model based on the output of the identification unit, and an external tone generator is used. And a tone color setting means for outputting to the module.

[0009]

According to the present invention, the external tone generator module can be set by a simple operation by transferring the tone color setting information from the electronic musical instrument body to the external tone generator module by such means.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a block diagram showing the hardware configuration of an electronic piano to which the present invention is applied. 1 is MID
An electronic piano 2 with an I terminal is a well-known external sound source module.

Next, the internal structure of the electronic piano 1 will be described. The CPU 10 controls the entire electronic piano.
The ROM 11 stores an assigner, a program required for sound generation processing, and data. The RAM 12 stores various control data including external tone color setting information. The RAM 12 is backed up by a battery so that the contents of the memory are retained even when the power is turned off.

The panel 13 reads the states of various switches under the control of the tone color selection switch, various switches including a data load or data save switch, an LCD or LED, and the CPU 10, and outputs various information to the display. It consists of a panel interface circuit. The keyboard 14 is a plurality of keyboards equipped with switches,
And a scan circuit for reading the state of the keyboard switch under the control of the CPU 10.

The MIDI interface circuit 15 is an interface circuit for a MIDI input signal from the outside or a MIDI output signal to be output to an external tone generator module.

The tone generator circuit 16 has a well-known structure, for example, which reads waveform data from a waveform memory and multiplies an envelope signal to generate a musical tone signal. It is configured so that it can generate a musical tone signal.

The D / A converter 17 adds the tone signals of a plurality of channels output from the tone generator circuit 16 and performs D / A conversion. The amplifier circuit 18 amplifies the output signal from the D / A converter 17 or an analog tone signal input from the outside, and the speaker 19 converts the tone signal into a tone. The bus 20 connects each circuit inside the electronic piano.

Next, the operation will be described. FIG. 2 is a functional block diagram of an electronic piano to which the present invention is applied. The same functional blocks as in FIG. 6 are assigned the same numbers.
The outline of the operation will be described below with reference to FIG.

The key-on / off information output from the keyboard / key-depression detector 31 is assigned to each tone generation channel of the tone generator 33 by the tone assigner (assigner) 32, and the tone generator 33 generates a tone signal. To be done. The generated tone signal is amplified by the amplifier section 34, and a tone is generated from the speaker 35.

On the other hand, the MIDI signal output section 36 transmits the key-on / off information as a MIDI signal to the outside. The tone generator 37 of the external tone generator module generates a tone signal based on the input MIDI signal and outputs it to the amplifier 34.

From the tone color selection switch 38, tone color selection information of the internal sound source or the external sound source is input, and based on this information, the tone generation section 33 controls the setting of the internal tone color and ON / OFF of the internal sounding means. MIDI signal output section 3
6, MIDI signal transmission on / off, MIDI
Controls settings such as transmission channel settings.

The MIDI signal input section 40 receives the MIDI signal input from the external tone generator module and outputs it to the exclusive data creating section 41. The exclusive data creation unit 41 identifies the model of the external tone generator module or the tone color setting information from the received MIDI data, converts the tone color setting information into standard tone color setting information, and stores it in the external tone color setting information storage unit 42. The external tone color setting information is stored or read out from the external tone color setting information storage unit 42, converted into a format suitable for the identified model, and transferred to the external tone generator module via the MIDI signal output unit.

According to the present invention, by providing such means, the external sound source module can be set by a simple operation.

Next, details of the operation will be described. FIG. 3 is a flowchart showing the details of the operation of the above embodiment. When the power of the electronic piano is turned on, first, in step S1, various LSIs, registers in the RAM and control data areas are initialized.

In step S2, it is checked whether or not the switch for instructing the loading of the tone color setting data into the external tone generator module or, conversely, the saving of the tone color setting data from the external tone generator module is operated. In that case, the process proceeds to step S3.

In step S3, it is checked whether or not the operated switch is a data load. If the switch is a data load, the process proceeds to step S4, and if not, the process proceeds to step S5.

In step S4, the tone color setting data is loaded into the external tone generator module as described above. (Details will be described later.) Also, step S5.
In step 1, the tone color setting data is received from the external tone generator module and saved in the memory. (Details will be described later.) In step S11, it is checked whether or not the tone color selection switch has been operated, and if it has been operated, the process proceeds to step S12. Step S12
At, it is checked whether or not the operated one is the external tone color switch. If it is not the external tone color switch, the process proceeds to step S13 and the external tone color flag is reset. However, if it is the external tone color switch, the process proceeds to step S14, and the external tone color flag is set.

In step S15, the MID of FIG.
For the I signal output unit 36, the MIDI transmission channel corresponding to the operated tone color selection switch is set.

In step S16, it is checked whether or not the operated one is the internal tone color switch. If it is not the internal tone color switch, the process proceeds to step S17 and the internal tone color flag is reset. However, if it is the internal tone color switch, the process proceeds to step S18, and the internal tone color flag is set.

In step S19, the tone color number corresponding to the operated tone color setting switch is set in the tone generation control information area. In step S20, the sound currently being sounded by the external sound source or the internal sound source is erased. When an external sound source is used, if the channel is changed while the key-on information is sent in a certain channel, the key-off information does not come and the sound is not easily attenuated.

Therefore, when the channel is changed in step S15, the key-off information is sent in the previous channel to all the keys to which the key-on information is sent. Regarding the internal sound source, the key-off process of the corresponding sounding channel may be performed at the time of key-off, but the key-off process may be performed in this step S20.

In step S21, it is checked whether or not the key-on or the key-off is detected, and if it is detected, the process proceeds to step S22. Step S22
In step S23, it is checked whether or not the external tone color flag is set, and if it is set, step S23.
Move to. In step S23, step S1
The key-on or key-off information is transmitted to the MIDI transmission channel set in 5.

In step S24, it is checked whether or not the internal tone color flag is set, and if it is set, the process proceeds to step S25. Step S25
In step S19, tone generation processing such as key assignment and control of the tone generator circuit is performed by a known method based on the tone color number set in step S19. In step S26, other processing, such as control of the modulation effect, is performed, and the process returns to step S2 to repeat the processing.

Next, the data loading process will be described. First, the exclusive data will be described. In addition to standard data whose format has been determined, MIDI data defines exclusive data for performing control and data transfer unique to each model.

The format of this exclusive data is such that a header representing the exclusive data is followed by an ID number representing the model, followed by data specific to the model, and finally with a tailor representing the end of the exclusive data. By using this exclusive data, the external tone generator module can set various parameters including timbre or read the parameters.

FIG. 4 is a flow chart showing details of the data loading process. In step S40, in order to transmit the exclusive data from the module,
For example, the exclusive data of the data request is transmitted. This can be anything that the module sends exclusive data to. In this case, since the other party's ID is unknown, a general-purpose ID is used, or means for sequentially transmitting the IDs of the respective models until a response is received is taken. Further, if the module sends out the ID when the power is turned on, the step S40 is unnecessary.

In step S41, the ID is extracted from the exclusive data sent from the other module.
The model of the module is identified by extracting.
In step S42, read from ROM to step S41.
Read out the exclusive data format information for tone setting for the model identified in.

In step S43, external tone color setting data in a standard format is read from the ROM or RAM. The data includes tone number, MIDI channel, volume level, reverb, chorus, pan,
Effect data such as vibrato, attack, decay,
There are envelope data such as releases and data such as tuning.

Then, the read data is subjected to processing such as code conversion according to the model and is written in the position corresponding to the format to complete the data format.

In step S44, the completed tone color setting exclusive data is transmitted to the module,
Make tone settings. By such processing, even if the model is different, the tone color can be automatically set in the same manner.

Next, the data save process will be described. FIG. 5 is a flowchart showing details of the data save process. In steps S50 and 51, the module ID is identified by the same processing as steps S40 and 41 in FIG.

In step S52, a command instructing the transmission of the tone color setting data of the tone generator module is transmitted by the exclusive data suitable for the identified model. In step S53, the tone color setting information is extracted from the exclusive data received from the tone generator module, converted into standard data, and saved in the RAM or an external storage device (not shown). By such processing, it is possible to save the set tone color setting data in the external tone generator module regardless of the model.

Although the embodiment has been described above, the following modifications are also possible. First, regarding the tone color setting information to be saved in the RAM, a plurality of save areas may be provided so that it can be selected by a number or the like at the time of loading.
Further, the tone color setting information saved in the RAM may be modified from the panel, or new data may be input from the panel.

A drive device such as a floppy disk, ROM or RAM card may be connected as an external storage device for storing and inputting / outputting tone color information. Although an example of an electronic piano is given in the embodiments, the present invention is not limited to this, and is applicable to general electronic musical instruments having a MIDI terminal.

[0043]

As described above, according to the present invention, even in external sound source modules of different models, the tone color of the electronic musical instrument is automatically adjusted so that the tone color corresponds to the tone color selection switch of the electronic musical instrument body. The effect is that settings can be made.

[Brief description of drawings]

FIG. 1 is a block diagram of an electronic piano to which the present invention is applied.

FIG. 2 is a functional block diagram of an electronic piano to which the present invention has been applied.

FIG. 3 is a flowchart showing the operation of the embodiment.

FIG. 4 is a flowchart showing details of a data loading process.

FIG. 5 is a flowchart showing details of data save processing.

FIG. 6 is a functional block diagram of a conventional system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Electronic piano, 2 ... External sound source module 10 ... CPU, 11 ... ROM, 12 ... RAM, 13 ... Panel, 14 ... Keyboard, 15 ... MIDI interface circuit, 16 ... Sound source circuit, 17 ... D / A converter, 18 …
Amplifier circuit, 19 ... Speaker, 20 ... Bus

Claims (2)

[Claims] 1. An electronic musical instrument connected to an external tone generator module via a MIDI signal input / output means, a storage means for storing tone color setting information of the external tone generator module, and an identifying means for identifying a model of the external tone generator module. A tone color setting means for converting the tone color setting information of the external tone generator module stored in the storage means into a signal format suitable for the model based on the output of the identifying means, and outputting the signal format to the external tone generator module. An electronic musical instrument characterized by having. 2. A tone color information saving means for reading tone color setting information from an external tone generator module, converting the tone color setting information into standard tone color setting information, and storing the information in the storage means. Electronic musical instrument described in.