JPH0833730B2 - Electronic musical instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention sets the keyboard area of another electronic musical instrument externally connected according to the highest or lowest note of the keyboard area (range corresponding to the keyboard). It relates to an electronic musical instrument that can be changed.

[Conventional technology]

As shown in FIG. 4, an electronic musical instrument 1 _A having a keyboard range from the lowest note C ₃ to the highest note C ₄ was connected to another electronic instrument 1 _B having the same C _{3 to} C ₄ keyboard range. When changing the lowest note of the keyboard area of electronic musical instrument 1 _A from C ₃ to C ₄ and the highest note from C ₄ to C ₅ , the notes of each key can be changed accordingly. The electronic musical instruments that are used are known.

In Figure 4, the electronic musical instrument 1 _C with further identical key region C ₃ -C ₄ to the electronic musical instrument 1 _B connected via the electronic musical instrument 1 _A, the keyboard area of the electronic musical instrument 1 _C C ₅ -C It can also be changed to ₆ for use. Incidentally, when connecting the electronic musical instrument 1 _A to the electronic musical instrument 1 _B, the keyboard area of the electronic musical instrument 1 _B may be reduced to C ₂ -C _3.

In the example of FIG. 4, the keyboard area can be expanded to 3 octaves as a whole by connecting in series the electronic musical instruments 1 _A , 1 _B and 1 _C each having a keyboard area of 1 octave.

[Problems to be Solved by the Invention]

As described above, in the case of a conventional electronic musical instrument that allows the keyboard area to be changed when another electronic musical instrument is connected, when actually changing the keyboard area, the keyboard area for changing the keyboard area specially provided on the operation panel is used. It is necessary to operate the manipulator of
When a plurality of electronic musical instruments are connected, there is a problem that the above-mentioned operators of each electronic musical instrument must be operated respectively.

The present invention is intended to solve the above problems, and an object thereof is to obtain an electronic musical instrument in which a keyboard area is changed without operating an operator.

[Means for solving the problem]

In the electronic musical instrument of the present invention, a detecting means for detecting that another electronic musical instrument is externally connected, a communication means for communicating with the externally connected other electronic musical instrument, and the other electronic musical instrument by the detecting means. Area code detection for detecting, through the communication means, the area code indicating the highest note or the lowest note of the keyboard area of the other electronic musical instrument sent from the other electronic musical instrument after it is detected that the external musical instrument is externally connected. Means and keyboard area changing means for changing the keyboard area of the device itself according to the area code detected by the area code detecting means.

Further, after the change is made by the keyboard area changing means, an area code generating means for generating an area code indicating the highest note or the lowest note of the keyboard area of the own device and outputting it to the outside through the communication means is provided. May be.

[Action]

When it is detected that another electronic musical instrument is connected, the keyboard area of the other electronic musical instrument sent from the other electronic musical instrument is displayed according to the area code indicating the highest note or the lowest note of the keyboard area. The keyboard area is automatically changed by, for example, raising or lowering the octave by one octave.

〔Example〕

An embodiment in which the present invention is applied to an electronic musical instrument having a keyboard such as an electronic piano will be described below with reference to the drawings.

In Figure 1, the external interface 9 as a communication means provided in the electronic musical instrument 1 _A, is connected another electronic musical instrument 1 _B, have been made to transmit and receive data with each other. Further, the keyboard section 3, the operation panel section 4, the CPU 5, the timer 6, the program ROM 7, the RAM 8, the interface 9 and the tone forming circuit 10 are connected to the bus line 2 provided in the electronic musical instrument 1 _A , and are mutually connected. Communication is made to take place.

The tone data formed by the tone forming circuit 10 is converted into an analog tone signal by the D / A converter 11. The musical tone signal is amplified by the amplifier 12 and then applied to the speaker 13 to obtain a musical tone.

The keyboard section 3 is composed of a keyboard in which keys are arranged and an interface for inputting signals from each key of the keyboard.

The operation panel section 4 is composed of a large number of various operators 14 for controlling musical tones and performances, an interface for inputting signals from each operator 14, a display 15 and the like.

The CPU 5 scans the keyboard and operates the operators 14 described above.
The scan process is performed, and various processes such as musical tone generation are executed according to the program stored in the ROM 7 in response to the operation of the key or the operator 14.

The timer 6 supplies various request signals and timing signals including signals for controlling output of display data to the display 15 to each unit.

The ROM 7 stores programs for the CPU 5, tone waveform data, display data, and the like.

The RAM 8 is provided with various registers, counters, and the like.

 Next, the operation of the above configuration will be described.

FIG. 2 shows a flowchart of the main processing executed by the CPU 5.

In FIG. 2, when the power is turned on, step S1
Then, initial processing such as clearing the tone generator and RAM is performed.

Next, in step S2, a key scan process for sequentially checking the operation states of all the keys of the keyboard section 3 is performed. If it is detected in step S3 that the operated (event) key is present, in step S4, the musical tone control process or the like corresponding to the operated key is executed.

Next, in step S5, a panel scanning process is performed in which the operating states of all the operators 14 of the operating panel unit 4 are sequentially checked. If it is detected in step S6 that the operator 14 has been operated, a process corresponding to the operated operator 14 is performed in step S7. Then, after performing other main processing 2 as needed in step S8,
Return to S2.

When the external interface 9 receives data during the above main processing, the reception interrupt processing of FIG. 3 is executed.

In FIG. 3, first in step S1, it is determined whether or not it is connected (the electronic musical instrument 1 _B in this example) other electronic instruments. When the connection of the electronic musical instrument 1 _B is detected, the process proceeds to step S2, and it is determined whether the data received by the external interface 9 is the area code C _B transmitted from the electronic musical instrument 1 _B. The area code C _B is a code indicating the highest note or the lowest note of the keyboard area of the electronic musical instrument 1 _B.

When the area code C _B is detected in the above step S2, the generation of the musical sound currently being performed is temporarily stopped in a step S3, and then the area code C _B is stored in the RAM 8 in a step S4.

Next, in step S5, a sound changing process is performed. This change processing is performed in the tone forming circuit 10 and the area code
Depending on C _B , processing such as raising or lowering the tone range by one octave is performed.

Next, in step S6, an area code C _A corresponding to the keyboard area after the tone change processing is generated and information indicating the code is displayed on the display unit 15, and then in step S7 the area code
C _A is output through the external interface 9 for a fixed time.
The area code C _A is used for a keyboard area changing process performed in another electronic musical instrument when the electronic musical instrument 1 _B is connected to another electronic musical instrument.

If the area code C _B is not detected in step S2, the other receiving process is performed in step S8, and then the process returns to the main process in FIG.

As described above, according to the above-described embodiment, the keyboard area of the electronic musical instrument 1 _A can be automatically changed based on the area code C _B sent from the electronic musical instrument 1 _B.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made based on the technical idea of the present invention.

〔The invention's effect〕

As described above, according to the present invention, the keyboard area is automatically changed by simply connecting another electronic musical instrument to the electronic musical instrument, so that it is not necessary to operate the operator as in the conventional case, and the usability is improved. Is improved. Further, it is possible to reliably set an appropriate keyboard area corresponding to the keyboard area of another electronic musical instrument.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIGS. 2 and 3 are flowcharts showing processing executed by a CPU, and FIG. 4 is a block diagram showing an example of a connecting method of an electronic musical instrument. The reference numerals used in the drawings are 1 _A , 1 _B ... Electronic musical instrument 5 ... CPU 7 ... ROM 8 ... RAM 9 ... External interface 10 ... Music tone forming circuit.

Claims (2)

[Claims] 1. A detection means for detecting that another electronic musical instrument is externally connected, a communication means for communicating with the externally connected other electronic musical instrument, and the other electronic musical instrument externally connected by the detecting means. After being detected that the area code detecting means for detecting through the communication means the area code indicating the highest note or the lowest note of the keyboard area of the other electronic musical instrument sent from the other electronic musical instrument, An electronic musical instrument comprising: a keyboard area changing means for changing the keyboard area of the device itself according to the area code detected by the area code detecting means. 2. A region code generating means for generating a region code indicating the highest or lowest tone of the keyboard region of the device itself after the change is made by the keyboard region changing means and outputting it to the outside through the communication means. The electronic musical instrument according to claim 1, which is provided.