JPH06230773A - Electronic musical instrument - Google Patents

Abstract

PURPOSE:To remarkably increase a degree of feedom for the content, volume, and edit of data by acquiring data for performance not only from memory but by MIDI input. CONSTITUTION:This instrument is equipped with a keyboard 22, an MIDI input terminal 21 which interfaces the input/output of note information of a player, a display means 23 on which a keyboard position where the player depresses the keyboard 22 is displayed, and an operating means 24 which performs various kinds of setting required for the performance. The keyboard position of the MIDI-inputted note information of the player is displayed on the display means 23 corresponding to the keyboard 22. Thereby, the player can recognize the position of the keyboard 22 of the MIDI-inputted note information from the display means 23 corresponding to each keyboard while he is seeing hig own keyboard 22. Therefore, it is possible to recognize the performance of another player correctly and to efficiently learn or teach the performance.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key press display device for an electronic musical instrument, and more particularly to a key press display device for input. 2. Description of the Related Art Conventionally, as a key press display device of this type,
For example, the one disclosed in Japanese Patent Publication No. 4-48234 is known. This device realizes key depression display, manual performance sound generation, and automatic performance sound generation by using a microcomputer. FIG. 6 is a circuit configuration diagram thereof. In the figure, a key depression of a keyboard 1 made up of a large number of keys is displayed by an LED group 2 provided corresponding to each key depression. The key depression operation is transmitted to a large number of keyboard switches of the key switch circuit 3 and detected as key operation information.
The LED group 2 is driven by the LED drive circuit 4. These devices are connected to the CPU 6 via the bus 5. The CPU 6 executes various processes for key depression display and tone generation in accordance with a program stored in the program memory 7. Further, the CPU 6 uses the working memory 8 for various kinds of processing. A performance data memory 9 is further connected to the bus 5 to store performance data of a desired piece of music.
Further, the tempo oscillator 10 is connected to the bus 5 and generates a tempo clock signal at a cycle corresponding to a 96th note in order to start an interrupt routine. Further, a tone forming circuit 11 is connected to the bus 5, and this circuit has, for example, four tone generation channels, and each tone generation channel is operated by a key depression operation on the keyboard 1 or a performance data memory 9. A tone signal is generated in response to the read data. The tone signal generated from each tone generation channel is supplied to the speaker 13 via the output amplifier 12 and converted into a sound. The control operator circuit 14 includes control operators such as a mode changeover switch, a start / stop control switch, a tone color selection switch, and a volume setting volume, and can detect control information according to the operation of these control operators. Is configured. As described above, in the conventional electronic musical instrument, when playing a musical composition, the position of the keyboard to be depressed is indicated by the LED or the like provided corresponding to each keyboard, so that the playing progresses. The data used to change the display by using the performance data is obtained from a built-in memory such as the performance data memory (ROM) 9. However, in the conventional device as described above, since the data stored in the memory is used, the data is fixed and cannot be changed, or even if it can be created, the degree of freedom thereof can be increased. There was a problem that was limited. Therefore, an object of the present invention is to provide an electronic musical instrument in which data for playing is obtained not only by memory but also by MIDI input, and the degree of freedom of data content, capacity, editing, etc. can be greatly expanded. To provide. FIG. 1 is a schematic block diagram of an electronic musical instrument of the present invention. In order to achieve the above object, the electronic musical instrument according to the present invention is provided with a MIDI (Musical I) that interfaces the keyboard 22 with the note information of the performer.
nstrument Digital Interface) input / output terminal 21 and display means 2 for displaying the keyboard position at which the player has pressed the keyboard 22.
3 and an operating means 24 for making various settings necessary for performance, the keyboard position of the MIDI input player's note information is displayed by the display means 23 corresponding to each keyboard 22. Keeps paying attention to his / her own keyboard 22 and knows the position of the keyboard 22 of the MIDI input note information from the display means 23 corresponding to each keyboard, correctly grasps the performance of another player, and plays the performance. It is characterized by efficient learning or teaching. According to the present invention, when the performer inputs note information for performance through the MIDI input / output terminals 21, the display means 23 such as an LED corresponding to each keyboard 22 is produced. It is possible to immediately and accurately know the keyboard 22 which is lit and the key is depressed. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing an embodiment of the present invention, FIGS. 2 to 4 are explanatory diagrams specifically showing this embodiment, and FIG. 5 is a flow chart showing the operation of this embodiment. In FIG. 1, reference numeral 21 denotes a MIDI (Music) interface for inputting and outputting the note information of the performer.
al Instruments DigitalInte
rface) input / output terminal, 22 is a keyboard (keyboard),
Reference numeral 23 is a display means such as an LED for displaying a key pressing position, 24 is a panel switch for switching and controlling the operation of a device other than the keyboard 22, 25 is a bus, 26 is a CPU for controlling the device operation, and 27 is a performer. ROM that contains data such as notebook information and a control program for the CPU 26,
Reference numeral 8 is a normal working RAM such as an externally attached FIFO, and 29 is a sound source such as an LSI that generates a musical sound. The present invention is characterized in that the performance sound is emitted from the sound source 29 in accordance with the note information of the performer input through the MIDI input / output terminal 21 of the keyboard 22. Needless to say, the performance sound may be generated from the sound source 29 according to the data stored in the ROM 27. The sound source 29 is composed of, for example, a D / A converter and a speaker (not shown). The specific positional relationship between the keyboard 22 and the display means 23 shown in FIG. 1 is as shown in FIG. Next, the operation of this embodiment will be described with reference to FIGS. 5 and 3 to 4. In FIG. 5, step S
At 1, the device is initialized. In step S2, a process for the input from the keyboard 22 shown in FIG. 1 is performed, and when there is an input, the tone generator 29 of FIG. 1 is controlled through the CPU 26 to output a musical sound. In step S3, the input process from the panel switch 24 of FIG. 1 is performed.
The sound source 29 of FIG. 1 is controlled through U26 to give an effect to the musical sound and to set various functions. In step S4, a process for extracting the input information obtained in steps S2 and S3 as MIDI data as necessary is performed and sequentially stored in the buffer area of the FIFO memory on the RAM 28 of FIG. In step S5, an input process is performed in which the MIDI data already stored in the FIFO memory on the RAM 28 of FIG. 1 is sequentially read out, and a musical tone is output or an effect is given to the musical tone according to the input information. Also, the device function is set. In step S6, an output process for giving display information according to the device function to the display means 23 of FIG. 1 and controlling the display is performed. In step S7, a process of receiving serial data from the input terminal of the MIDI input / output terminal 21 of FIG. 1 is performed, which is activated by an interrupt by hardware (not shown). In step S8, the data obtained in step S7 is sequentially stored in the FIFO memory. In step S9, the already stored F
The MIDI data in the IFO memory is set to serial out, which is activated by a hardware interrupt (not shown). Further, in step S10, step S
The serial data set in 9 is transmitted from the MIDI input / output terminal 21 of FIG. Next, the above operation will be described with reference to the concrete examples shown in FIGS. FIG. 3 shows the keyboard (keyboard) 22 and the display means 23 on the transmission side, and FIG. 4 shows the keyboard (keyboard) 22 and the display means 23 on the reception side. First, the MIDI OUT terminal (not shown) of the keyboard 22 on the transmitting side in FIG. 3 and the MIDI IN terminal of the keyboard 22 on the receiving side in FIG. 4 are connected. Here, it is assumed that the keyboard 22 on the receiving side has the above-mentioned device function according to the present invention. The keyboard 22 on the transmission side may be anything as long as it has MIDI OUT. When the receiving side panel switch 24 (FIG. 1) is set to a predetermined setting, the display means 23 of FIG. 4 is brought into a state of displaying the MIDI IN intended by the present invention by the processing of step S3 of FIG. Now, with the keyboard 22 on the transmission side of FIG.
When the notes indicated by C3, E3, and G3 in FIG.
On the receiving side of step S7, steps S7, S8 and S of FIG.
Each processing of 5 and S6 is performed. That is, the data is read from the serial IN in S7, the data is saved in the FIFO memory in S8, and the MIDI IN is executed in S5.
The data is checked and the display means 23 is controlled in S6. As a result, the corresponding display means 23 shown by C3, E3 and G3 in FIG. 4 are turned on and display is performed. The message corresponding to the display may be identified by the MIDI channel. The apparatus of the present invention shown above is applied, for example, as follows. That is, when preparing and teaching multiple electronic musical instruments to teach and learn to play, the teacher plays against a large number of students. It's hard to see and understand, and on the other hand, it's difficult for teachers to understand how students are playing. On the other hand, when the teacher and the student's musical instruments are connected to each other via MIDI, the keyboard position of the MIDI input note information is indicated by the display means corresponding to each keyboard, and M is displayed.
The player can visually understand the performance content of the performer who outputs the IDI. In this way, the performer can correctly grasp the performances of other performers and efficiently teach or learn the performances while paying attention to his own keyboard. As described above, according to the present invention, the data for playing is not only obtained from the memory as in the conventional case but also obtained by MIDI input, so that the content of the data is It is possible to provide an electronic musical instrument in which the degree of freedom in capacity, editing, etc. can be greatly expanded with a simple configuration, and the capacity can be expanded without depending on the size of the hardware of the main body.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing a configuration of an embodiment of an electronic musical instrument according to the present invention. FIG. 2 is an explanatory diagram specifically showing the embodiment of FIG. FIG. 3 is an explanatory diagram specifically showing the embodiment of FIG. FIG. 4 is an explanatory diagram specifically showing the embodiment of FIG. 5 is a flowchart showing the operation of the embodiment of FIG. FIG. 6 is a circuit configuration diagram of a conventional electronic musical instrument key depression display device. [Description of Reference Signs] 21 MIDI input / output terminal 22 keyboard (keyboard) 23 display means 24 panel switch 26 CPU 27 ROM 28 RAM 29 sound source

Claims (1)

[Claims] [Claim 1] MIDI (Musical Ins) for interfacing the keyboard with the input and output of note information of the performer.
document Digital Interfac
e) The keyboard position of the note information of the MIDI input by the player, which is provided with input / output terminals, display means for displaying the keyboard position at which the player has pressed the keyboard, and operating means for making various settings necessary for performance. Is displayed by the display means corresponding to each keyboard. 2. The light emitting diode (LE)
The electronic musical instrument according to claim 1, which is D). [0001]