JPH0199089A - Electronic musical instrument with key split function - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention provides a keyboard with a key split function that divides a keyboard into a plurality of key ranges, specifies a tone for each key range, and allows playback with the specified tone. Regarding electronic musical instruments.

[Prior Art and its Problems] Conventionally, there have been electronic musical instruments that have a key split function that allows each key range to be played with a different sound source at an arbitrary key position (hereinafter referred to as a "split point").

On the other hand, information such as keystroke data is transmitted via MIDI (Music) to other externally connected electronic musical instruments.
ment Digital Interface> There has been an electronic musical instrument that has a function of transmitting and receiving according to standards and performing multiple performances.

Therefore, when multiple electronic musical instruments with key splitting functions are connected to perform a multiplayer performance, the transmitting electronic instrument sends keystroke data in accordance with the above-mentioned MIDI standard, as well as information called a channel for specifying the sound source to the receiving side. is sent to the electronic musical instrument. As a result, the electronic musical instrument on the receiving side produces a sound with a pitch corresponding to the sent keystroke data using the sound source specified in the channel information. For example, assume that the key split points of both the transmitting and receiving electronic musical instruments are set as shown in FIG. Lo of the transmitting electronic instrument
When a key on the wer side is pressed, the keystroke data is transmitted to the receiving side electronic musical instrument along with channel information rAJ. Similarly, when a key on the IJpper side is pressed, the keystroke data is transmitted to the receiving electronic musical instrument along with the channel information rBJ. The electronic musical instrument on the receiving side uses a preset sound source depending on whether the sent channel information is rAJ or rBJ, and outputs a sound with a pitch corresponding to the keystroke data. It is something that is pronounced.

By the way, there is no problem if both the transmitting side and the receiving side have the key split function and the split points are set to the same point as described above, but for example, if the transmitting side's electronic musical instrument and the receiving side's electronic musical instrument If the split points set for the two devices are different, the keystroke data for the key range located between the sender's split point and the receiver's split point will be sent from the sender's electronic instrument to the receiver's electronic instrument. In this case, since the receiving electronic musical instrument has different channel information corresponding to the keystroke data, it cannot specify the sound source and cannot produce sound. Conventionally, therefore, the electronic musical instrument on the receiving side performs the process shown in FIG. 6 to produce sound.

That is, in FIG. 6, first step AO
The channel information (referred to as "message CH (channel)" in the figure) added to the keystroke data sent from the transmitting electronic device in I is the low-frequency channel set in the receiving electronic instrument. Determine whether it matches the information.

If they match, the process proceeds to step AO2, where a sound source corresponding to the low-frequency channel is used to generate a sound corresponding to the keystroke data. Also, step AO
If it is determined that they do not match in step 1, this step AO
The sound generation control process in step 2 is omitted. Then step AO3
Next, it is determined whether the channel information added to the keystroke data sent from the transmitting electronic device matches the high-frequency channel information set in the receiving electronic musical instrument. If the sound generation control processing in step AO2 is performed, there will be no match here, but if they match, the process will proceed to step AO4, where the sound source corresponding to the high-frequency channel will be used to generate the sound. Generates a sound corresponding to keystroke data. If it is determined in step AO3 that they do not match, the sound generation control process in step AO4 is also omitted.

In this way, depending on the channel information added to the keystroke data sent from the transmitting side, a sound source is selected and the sound is produced for the time being, regardless of the key split point on the receiving side.

In addition, when using an electronic musical instrument that does not have a key split function and always outputs single channel information attached to keystroke data as the transmitting electronic musical instrument, the control process described above may cause the receiving sound source to , the sound will be produced by a sound source that matches the channel information output by the transmitting side.

Therefore, for example, as a key split on an electronic musical instrument on the receiving side, channel information "A" is used for the low range, and channel information R is used for the high range.
If a sound source corresponding to 8J is set, and the transmitting electronic musical instrument outputs single channel information of rAJ or rBJ, the receiving electronic musical instrument outputs a sound source corresponding to the channel that matches that of the transmitting side. It will be pronounced only in Also, if the channels of the receiving electronic musical instrument are set to "A" for both high and low frequencies, and the channel information of the transmitting electronic musical instrument is set to output the same rAJ, the receiving electronic musical instrument will be pronounced by two sound sources.

In any of the above cases, the sound generation will be controlled on the receiving side without utilizing the key split function.

[Object of the invention] This invention was made in view of the above-mentioned circumstances.
To provide an electronic musical instrument with a key split capable of surely performing a performance utilizing a key split function regardless of the electronic musical instrument connected to the outside.

[Summary of the Invention] This invention sets independent channel data for each of a plurality of key ranges divided by key splits, and when information is received from the outside, the channel data included in the received information is set according to the above settings. It compares multiple channel data, and only when they match, sounds with the tone corresponding to the key range set by that channel data, and also determines whether each of the multiple channels in the main unit matches. , only if they match, based on the pitch data included in the received information, a sound is produced with a tone corresponding to the key range that includes the pitch.

[Embodiments of the invention] An embodiment of the present invention will be described below with reference to the drawings.

Figure 1 shows the circuit configuration of the main body of an electronic musical instrument used on the receiving side, and 11 is a CPU that controls the operation of other circuits.
It is. This CPU 11 performs keystrokes! ll! Board 1
2. An interface (not shown as FT/FJ in the figure) 13 for connecting other electronic musical instruments, etc., a program memory 14 for storing operation programs such as the key split function, and storing key split data, received data, etc. The sound system 1 is connected to each of the working memories 15 to input and output data, and controls the musical tone generator 16 to generate musical instrument sounds from a sound source according to the channel information.
Output from 7.

The working memory 15 stores various data as described above, and as shown in FIG. 2, the KBK register 1 stores the key codes of keys operated on the keyboard 12.
5a, an MD that stores a key code sent from an electronic musical instrument externally connected to the interface 13 and serving as a transmitter;
K register 15b1 key split function allows keyboard 12
SPK register 1 that stores the split point set above
5C1 L CH register 15d1 that stores channel information on the low frequency side when using the key split function UCH register 15e1 that stores channel information on the high frequency side Sent from the electronic musical instrument that is externally connected to the interface 13 MDCH register 15f that stores channel information
It consists of These registers 15a to 15f all have a storage capacity of 8 bits, but as shown in the figure,
BK register 15a, MDK register 15b and SPK
Register 15c also stores 7 bits of the LCH
Register 15d, UCH register 15e and MDCH register 15f use 4 bits.

Next, the operation of the above embodiment will be explained.

FIG. 3 shows processing corresponding to key operations on the keyboard 12, which is the keyboard on the transmitting side, when performing an operation using the key split function with an external electronic device connected.

When a key on the keyboard 12 is operated, the key code is stored and set in the KBK register 15a of the working memory 15. First, in step BOI, the key code of the KBK register 15a is set in the SPK register 15c. Determine whether the pitch is lower than the point. If it is determined that the key is low, it means that the operated key is a key in the range set to low by the key split function on the keyboard 12, and the process then proceeds to step BO2, where the LCH register 15d is set. The set low frequency channel information is output to the musical tone creation section 16 along with the key code according to the MIDI standard. In response to this, the musical sound generation unit 16 generates a musical sound according to the key code operated by the sound source according to the low frequency channel information, and drives the sound system 17 to generate the sound, as shown in the subsequent step 803.
This ends this process.

In addition, if it is determined in step BOI that the key code of the KBK register 15a is equal to or higher than the split point of the SPK register 15c, the operated key will be displayed as a key split point on the keyboard 12. Since the key is in a range set to the high range by the function, proceed to step 10-BO4 and input the high range channel information set in the UCH register 15e along with the key code to the musical tone according to the MIDI standard. It is output to the creation section 16. In response to this, the musical sound generation section 16 generates a musical sound according to the key code operated by the sound source according to the high frequency channel information, and drives the sound system 17 to generate the sound, as shown in step BO5. This ends this process.

The above is the processing when the keyboard 12, which is the keyboard on the receiver side, is operated.Next, the key code and channel information sent from the electronic musical instrument, which is the transmitter, externally connected via the interface 13 is processed. This will be explained using FIG.

MI from an electronic musical instrument externally connected to the interface 13
After data according to the DI standard is input and its key code is set in the MDK register 15b and channel information is set in the MDCI register 15f, the channel information is stored in the LCH register 15d of the working memory 15 or the UC.
If it is determined that the channel information matches either the low-frequency channel information or the high-frequency channel information set in the H register 15e, the process shown in FIG. 4 is started. In the same figure, first, step CO
In step 1, check whether the low-frequency side channel information and high-frequency side channel information of the receiving electronic device are equal or not, that is, the transmitting electronic device does not have a key split function or does not have a key split function. However, it is determined whether the channel information is single and the receiving channel and the transmitting channel are made to match in order to realize the key splitting function in the electronic device on the receiving side. If it is determined that the channel information on the low frequency side and the channel information on the high frequency side are equal, the process proceeds to step CO2 and the MDK register? The sent key code set to 5b is SPK register 15c.
Determine whether the pitch is lower than the split point set in . If it is determined that the L C
The low frequency channel information set in the H register 15d is
The key code of the DK register 15b is outputted to the musical tone generating section 16 in accordance with the MIDI standard, a musical tone is generated, and the sound system 17 generates the sound, and this process ends.

In addition, if it is determined in step CO2 that the key code of the MDK register 15b is equal to or higher than the split point of the SPK register 15c, the operated key on the transmitting side is set to the high range. Since the key is in the set key range, the process proceeds to step CO4, where the high frequency channel information set in the UCH register 15e is sent to the MID along with the key code in the MDK register 15b.
The musical tone is outputted to the musical tone generating section 16 according to the I standard, and the musical tone is generated by the sound system 17, and this processing is completed.

Roughly speaking, since the electronic musical instrument on the transmitting side has a key split function, if the low-frequency and high-frequency reception channels on the receiving side are set equal to the corresponding channels on the transmitting side, the receiving side's It is determined that the channel information on the low frequency side and the channel information on the high frequency side of the electronic device are different, and the process proceeds to step CO5, where the transmitted channel information stored in the MDCH register 15f and sent is set in the LCH register 15d. It is determined whether the channel information is equal to the channel information of the key range set in the low range on the receiver side. If it is determined that they are equal, the process proceeds to step CO6 and the LCH
The low frequency channel information set in register 15d is MD
The key code of the K register 15b is outputted to the musical tone generator 16 in accordance with the MIDI standard, a musical tone is generated, and the sound system 17 generates the sound, and this process ends.

Also, in step CO5 above, MDC)l register 15f
The channel information sent from the sending side that is stored in L
If it is determined that the channel information of the key area set in the low range of the receiving unit side set in the CH register 15d is not equal to the channel information of the receiving unit set in the UCH register 15e, the received channel information is set in the UCH register 15e. This is the channel information for the key range set in the high range of the side, and the process then proceeds to step CO7, where the wide range channel information set in the UCH register 15e is used together with the key code in the MDK register 15b to create musical tones according to the MIDI standard. Output to section 16,
A musical tone is generated and the sound system 17 produces the sound, and this process ends.

[Effects of the Invention] As described in detail above, according to the present invention, independent channel data is set for each of a plurality of key ranges divided by key splits, and when information is received from the outside, the information contained in the received information is Compare the channel data set above with the multiple channel data set above, and only those poems that match will be sounded with the tone corresponding to the key range for which the channel data has been set.
It determines whether or not each of the multiple channels in the main body matches, and based on the pitch data included in the received information only for matching gifts, the M corresponding to the key range that includes the pitch is determined. Since the sound is made in color, it is possible to provide an electronic musical instrument with a key split that can reliably perform a performance utilizing the key split function regardless of the electronic musical instrument connected to the outside.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the present invention.
FIG. 1 is a block diagram showing the circuit configuration, FIG. 2 is a diagram showing the register composition of the working memory in FIG. The figure is a flowchart showing the sound generation process corresponding to key operations on the transmitting side, and Fig. 5 is a diagram showing channel information corresponding to the key split point and key range.
FIG. 6 is a flowchart showing a sound generation process corresponding to received data in a conventional electronic musical instrument having a key split function. 11... CPU, 12... Keyboard, 13... Interface (1/1.14... Program memory, 15
... Working memory, 15a...KBK register, 15b...MDK register, 15c...SPK register, 15d...LCH register, 15e...U
CH register, 15f...MDCH register, 16.
...Music sound creation department, 17...Sound system. Applicant's agent Patent attorney Takehiko Suzue

Claims (1)

[Claims] It has a key split function that produces different tones depending on the key range divided into a plurality of parts, and also provides information such as key on/off information between other electronic musical instruments connected to the main body. An electronic musical instrument with a key split function that has a function of transmitting and receiving information includes a setting means for setting channel data that controls reception independently for each of a plurality of key ranges divided by the key split, and a setting means for setting channel data that controls reception independently for each of a plurality of key ranges divided by the key split, When the received information is received, the channel data included in the received information is compared with multiple channel data set in the main unit, and only when they match, the first sound generation unit generates the channel data with a tone corresponding to the set key range. a control means; a discrimination means for discriminating whether or not each of the plurality of channels in the main body matches; and pitch data included in the received information only when the discrimination result of the discrimination means is a match; 1. An electronic musical instrument with a key split function, characterized in that the electronic musical instrument is equipped with a second sound generation control means that generates sound with a tone color corresponding to a key range including the pitch based on the pitch of the electronic musical instrument.