JPS63155196U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a diagram suitable for understanding this invention, Fig. 2 is an overall perspective view of an electronic stringed instrument according to an embodiment of this invention, Fig. 3 is a cross-sectional view along a line showing an example of the configuration of a frett switch, and Fig. 4 shows an example of the configuration of a string trigger switch; Figure 5 is a diagram showing the overall circuit configuration; Figure 6 is a diagram showing the general flow of a microcomputer; Figure 7 is a diagram suitable for understanding the string trigger detection function. Figure 8 is a diagram suitable for understanding the string reverberation function, Figure 9 is a diagram suitable for understanding the frequency change function, Figure 10 is a diagram suitable for understanding the open string silencing function, and Figure 11 is a diagram suitable for understanding the open string silencing function. Figure 12 is a diagram suitable for understanding the mute function, and Figure 12 is a diagram showing an example of the configuration of a latch circuit.
Figure 3 is a diagram showing registers related to string trigger detection, Figure 14 is a detailed flowchart of string trigger detection processing, Figure 15 is a flowchart of an interrupt routine related to resetting the latch circuit, and Figure 16 is a sound source control. Figure 17 shows the register for
Figure 4 is a detailed flowchart of the assignment/sounding process, Figure 18 is a flowchart of setting the sounding time, Figure 19 is a flowchart of the interrupt routine related to sounding time control, and Figure 20 is a flowchart of the fret state detection process. Detailed flowchart: FIG. 21 is a detailed flowchart of the frequency change process in FIG. 20; FIG. 22 is a flowchart for the mode changeover switch input when strings are removed; FIG. 23 is a flowchart for the mute switch input;
The figure is a detailed flowchart of the all sound source silencing process in FIG. 23. 1...Body part, 4...Strings, 8...Finger board, 3
0... Microcomputer, 60... Musical sound generation circuit (sound source), TSW... String trigger switch, FSW
...Fretsto Switch.

Claims (1)

[Claims for Utility Model Registration] (1) At least one string is stretched on the body of the musical instrument, and this at least one string is provided with a string trigger switch that detects the start of vibration of the string. In an electronic stringed instrument having a structure in which a fret state sensing means for sensing a fret operation position with respect to the string is disposed on the swinger board, when the start of vibration of the string is detected by the string trigger switch, the fret state sensing means is disposed on the swinger board. a sound generation control means for instructing and controlling a sound source to start producing a musical tone of a string whose string vibration has started at a pitch corresponding to a fret operation position sensed by the means; and a sound production start by the sound generation control means. An electronic stringed musical instrument, comprising: a muffling control means that measures a predetermined sounding time from the instruction control point in time, and after the timing is completed, instructs and controls the sound source that is producing the sound to start muting the sounding. (2) The electronic stringed instrument according to claim 1 of the utility model registration, wherein the sounding time has an independent length for each timbre.