JP3513891B2 - Electronic musical instrument - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument suitable for use in musical education for infants. 2. Description of the Related Art Conventionally, there has been known an electronic musical instrument that generates a musical tone signal based on the operation state of a performance operator such as a keyboard and a pad. These electronic musical instruments output performance information such as a MIDI signal based on the operation state of the performance operator, and can thereby drive an external sound source device. In the above-mentioned electronic musical instrument, it is necessary to provide an on / off switch for designating whether or not to output performance information to the outside. However, there was a problem that it became expensive. Further, particularly when the player is an infant, there is also a problem that the musical tone is interrupted or the musical tone is kept sounding by operating the electronic musical instrument by passing the on / off switch. Note that the case where “the sound is kept on” means, for example, a case where the line is turned off after a note-on signal is supplied to the sound source and before the note-off signal is supplied. [0004] Further, in a device which mixes tone synthesis, voice reproduction, input sound and the like to output a sound and emits this sound from a sound system, a device for sound tone synthesis (so-called sound source module or the like) is externally provided. And connect
In the case of listening to a synthesized musical sound generated by an external sound source, there is a disadvantage that the synthesized sound generated inside the device, which is generated together with the sound reproduction, is annoying. Further, if the volume of the sound system is reduced in order to eliminate the tone synthesis sounds inside the device, there is a disadvantage that sound reproduction, input sound and other sound outputs are also erased. The present invention has been made in view of the above circumstances, and has as its object to provide an electronic musical instrument that can be configured at low cost and that can appropriately control the output state of performance information. [0006] In order to solve the above-mentioned problems, according to the present invention, a performance operator, performance information and
Storage means for storing audio data, and supplied performance information
A tone generator for synthesizing a tone signal based on
Read from the storage means according to an operation by a child.
Digital processing means to convert audio data into analog signals
Mixing a tone signal with the analog signal
To a mixer supplied to the sound system, and determination means for the performance manipulation member during power-up to determine <br/> constant whether it is being operated, the following song performance program
The performance information is read from the storage means, and the performance information is
Output, and the determination result by the determination means is positive.
If it is either negative or positive, the performance information
Control to use the sound source by supplying the
On the other hand, if the determination result is the other, the sound source is not used.
And control means for performing control to perform the control . Embodiments A. Configuration Example First, an electrical structure of an electronic musical instrument according to an embodiment of the present invention will be described with reference to FIG. In the figure, reference numeral 1 denotes an operator provided with a trigger switch, a cursor button, and the like operated by an operator.
Output via. Reference numeral 2 denotes a touch pen, and the position of the pen tip is detected by the tablet 3 at any time. A switch is provided on the pen tip of the touch pen 2. When the pen tip is pressed against the tablet 3, operation information is output from the touch pen 2 via the bus 17. Reference numeral 4 denotes a MIDI interface, which transmits and receives MIDI signals to and from an external device via a MIDI-IN terminal 4a and a MIDI-OUT terminal 4b. A CPU 5 controls other components based on a program stored in the ROM cassette 7. Reference numeral 6 denotes a RAM which can be read and written by the CPU 5 freely. 8 is a graphic display
The controller outputs a video signal based on the image data supplied from the CPU 5. This video signal is displayed on the display 9. Next, reference numeral 10 denotes a sound source, which synthesizes and outputs a tone signal based on the performance information supplied from the CPU 5. An effector 11 performs reverberation / volume control on a tone signal output from the sound source 10 based on control information supplied from the CPU 5. Reference numeral 13 denotes a microphone effector, which performs reverberation / volume control on the audio signal input from the microphone 12 based on control information similarly supplied from the CPU 5. A digital audio processing circuit 14 converts a digital audio signal supplied from the CPU 5 into an analog signal and outputs it. Further, the digital audio processing circuit 14 can convert a signal supplied from the microphone effector 13 into a digital signal and store the digital signal in the RAM 6 via the bus 17. Reference numeral 15 denotes a mixer, which mixes and outputs a tone signal and an audio signal supplied from the effector 11, the microphone / effector 13, and the digital audio processing circuit 14. The output mixed signal is emitted through the sound system 16. Next, FIG. 2 shows a perspective view of the electronic musical instrument and an example of connection of external devices. In the figure, as an operator 1, a trigger switch 1a composed of one unlock type switch and a cursor button 1b composed of four unlock type switches are provided. MIDI-
The IN terminal 4a is connected to a device that inputs information to the main body such as the keyboard 101, and the MIDI-OUT terminal 4b is connected to an external sound source 102. The external sound source 102 synthesizes a tone signal based on the supplied MIDI signal and emits the sound signal via the sound system 103. A home television set 104 is connected as the display 9 and the sound system 16. Reference numeral 20 denotes a power switch for turning on / off the power of the electronic musical instrument. On the tablet 3, a sheet body 30 imitating a piano keyboard is placed. Thus, when the touch pen 2 is pressed against the sheet 30, the pitch can be specified based on the position information. As described above, the pitch can be specified by the tablet 3 and the touch pen 2, and the tone signal can be synthesized via the sound source 10. Therefore, it is not always necessary to provide the keyboard 101, the external sound source 102, and the sound system 103. . However, if the user already has a keyboard or sound source, it is preferable to use these. B. Operation Initial Operation of Embodiment Next, the operation of this embodiment will be described. First, in this embodiment, the programs shown in FIGS. 3 and 4 are stored in the ROM cassette 7. When the power of the main body is turned on by operating the power switch 20, a main routine shown in FIG. 3 is started. When the process is started in the figure, a predetermined initialization is performed in step SP1. Next, when the process proceeds to step SP2, it is determined whether or not the trigger switch 1a is on. That is,
While the trigger switch 1a is pressed, the power switch 2
It is determined whether 0 has been operated. If the determination is "YES", the process proceeds to step SP3, and the flag ST is set to "1". On the other hand, if “NO” is determined here, the process proceeds to step SP4, and the flag ST is set to “0”.
When the setting of the flag ST is completed as described above, the process proceeds to step SP5, and enters a command waiting state. That is, various programs such as coloring, karaoke, games, and performances are stored in the ROM cassette 7, and the operator can appropriately select these programs. Hereinafter, the operation when “performance” is selected will be described in detail. Performance Operation When "performance" is selected in the command waiting state, a performance routine shown in FIG. 4 is started. When the process is started in the figure, in step SP101, initialization relating to performance is performed. This step SP101
In, the performance is forbidden for the time being to perform an opening display or the like. Next, when the process proceeds to step SP102, it is determined whether or not the performance is permitted. Here, since the performance is prohibited in step SP101, it is determined to be "NO", and the process proceeds to step SP109. In step SP109, a moving image process is performed based on the image information and the message information stored in the ROM cassette 7. That is, image information such as a background image and a sprite image is supplied to the display 9 via the graphic display controller 8, and an audio signal based on the message information is transmitted via the digital audio processing circuit 14, the mixer 15, and the sound system 16. Pronounced. Next, the process proceeds to step SP
When the process proceeds to 110, it is determined whether or not the moving image has ended. If not, the process returns to step SP102 if “NO” is determined. In the same manner, until permission for performance is given,
Steps SP102, 109, and 110 are repeatedly executed. Then, each time step SP109 is executed, the moving image progresses and a message is appropriately pronounced.
For example, when performing pitch education, an opening screen is displayed on the display 9, the screen is gradually faded out, a short musical score is displayed, and then a message “Please play this musical score” is displayed. It is output via the processing circuit 14. Alternatively, when cultivating a sense of rhythm, after generating a percussion sound with a predetermined rhythm,
A message "Please play this rhythm" may be output. After the above processing is performed, when the processing proceeds to step SP109 again, the performance is set to the permission state. After the performance is permitted, the process proceeds to step SP102, where "YES" is determined, and the process proceeds to step SP103. In step SP103, the presence or absence of a performance event is determined. here,
The performance event refers to a key event on the keyboard 101, an event of the touch pen 2 on the tablet 3, an event of the trigger switch 1a, and an event stored in the ROM cassette 7 and read according to the music performance program. The first two are mainly used for designating a pitch, and the trigger switch 1a is used for inputting a rhythm. If there is no performance event, “NO” is determined, and the process proceeds to step SP109. Hereinafter, step SP10
The loop consisting of 2, 103, 109 and 110 is repeated. Here, if any performance event occurs, the next time step SP103 is executed, "YE
S ”and the process proceeds to Step SP104. In step SP104, it is determined whether or not the event that has occurred is an event of the trigger switch 1a.
If "YES" is determined here, the process proceeds to step SP108, in which PCM data of a predetermined percussion instrument sound is read from the ROM cassette 7, and is read via the digital audio processing circuit 14, the mixer 15, and the sound system 16. This percussion instrument sound is emitted. The reason why percussion sounds are reproduced as PCM data without using the sound source 10 is that it is difficult to reproduce faithful percussion sounds with an inexpensive sound source. As described above, when there is an event of the trigger switch 1a, the percussion instrument sound is reproduced via the digital audio processing circuit 14, and thereafter, the above-described loop is repeated. Next, the operation when a performance event of the keyboard 101 or the like occurs will be described. When this event is detected and the process proceeds to step SP104 via step SP103, “NO” is determined here, and the process proceeds to step SP104.
Proceed to 105. In step SP105, the MID
A MIDI signal related to the event is output from the I interface 4 to the external sound source 102. Thereby, a musical tone is generated via the external sound source 102 and the sound system 103. Next, when the process proceeds to step SP106, it is determined whether or not the flag ST is "1". If "YES" is determined here, only the external sound source is sounded, so that control of the internal sound source is not performed, and the process proceeds to step S
Proceed to P109. On the other hand, if the flag ST is "0", the process proceeds to step SP107. Here, the performance information relating to the event is also supplied to the sound source 10, and the sound source 1
0, a musical tone is generated from the sound system 16 via the effector 11 and the mixer 15 sequentially. As described with reference to FIG. 3, the flag ST is set to "1" if the trigger switch 1a is pressed when the power is turned on, and is set to "0" if the trigger switch 1a is not pressed. Therefore,
The use / non-use of the internal sound source 10 is determined according to the operation state of the trigger switch 1a when the power is turned on. When the sound generation process is completed, the above-described loop is repeated, and a state of waiting for an event is set. Similarly, the input of the performance event by the player or the performance event from the ROM cassette 7 by the read program is repeated, and the moving image processing is executed in step SP109. After all the processes are completed, the process proceeds to step SP1.
When the process proceeds to 10, the determination is "YES" and the process returns to the main routine (FIG. 3). As described above, according to the electronic musical instrument of this embodiment, the tone generation source is determined according to the operation state of the trigger switch 1a when the power is turned on. Here, since the trigger switch 1a is originally necessary for playing percussion instrument sounds, in the present embodiment, it is possible to specify a sound source without providing any new hardware. Moreover, the designation of use / non-use of the internal sound source 10 can be made only when the power is turned on, and cannot be changed by other operations on the electronic musical instrument. Such a situation can be prevented beforehand. As described above, according to the electronic musical instrument of the present invention, when the power is turned on, the use or non-use of the internal sound source can be designated by the performance operator . Internal sound source
Specify the non-use, and use the external sound source connected to the
The sound generated by the internal sound source
In addition, it can make pronunciation such as voice.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a configuration of an electronic musical instrument according to one embodiment. FIG. 2 is a perspective view of an electronic musical instrument according to an embodiment and a diagram illustrating a configuration of an entire system. FIG. 3 is a flowchart of a control program according to one embodiment. FIG. 4 is a flowchart of a control program according to one embodiment. [Description of Signs] 5 CPU (performance information forming means, determination means, control means) 4b MIDI-OUT terminal (external output terminal) 7 ROM cassette (storage means) 10 Sound source (musical tone signal synthesis means)

Claims (1)

(57) [Claims] [Claim 1] A performance operator, storage means for storing performance information and voice data, and a sound source for synthesizing a tone signal based on the supplied performance information
The storage means in accordance with an operation by the playing operator
Converts the audio data read from the device to an analog signal
Digital processing means, mixing the tone signal and the analog signal,
A mixer to be supplied to a sound system; determination means for determining whether or not the performance operation element is being operated when power is turned on; and performance information from the storage means in accordance with a music performance program.
Information is read out and the performance information is output to the outside, and the determination result by the determination means is
If it is either positive or negative, the performance information
Control to use the sound source by also supplying the sound source
On the other hand, if the judgment result is the other, the sound source is not used.
An electronic musical instrument comprising: control means for performing control as follows .