JPH0210595U - - 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 Figure 5 shows an example of the configuration of a string trigger switch - line cross-sectional view, Figure 5 shows the overall circuit configuration, Figure 6 shows the general flow of the microcomputer, Figure 7 is suitable for understanding the string trigger detection function. Figure 8 is a diagram suitable for understanding the lingering function of strings, Figure 9 is a diagram suitable for understanding the silencing function due to the passage of sound time, Figure 10 is a diagram suitable for understanding the miute function, Figure 11 is a diagram showing an example of the configuration of a latch circuit, Figure 12 is a diagram showing registers related to string trigger detection, Figure 13 is a detailed flowchart of string trigger detection processing, and Figure 14 is related to resetting the latch circuit. Flowchart of the interrupt routine; FIG. 15 is a diagram showing the sound source control register; FIG. 16 is a detailed flowchart of the assignment/sound generation process in FIG. 13; FIG. 17 is a flowchart of setting the sound generation time; FIG. 18 Figure 19 is a flowchart of an interrupt routine related to sound generation time control, Figure 19 is a detailed flowchart of fret state detection processing, Figure 20 is a detailed flowchart of frequency change processing in Figure 19, and Figure 21 is a detailed flowchart of frequency change processing in Figure 19. FIG. 22 is a flowchart for inputting the mode changeover switch when strings are removed, FIG. 22 is a flowchart for inputting the mute switch, and FIG. 23 is a detailed flowchart for silencing all sound sources in FIG. 22. 1...Body part, 4...Strings, 5c...Mode changeover switch when stringing off, 8...Finger board, 30...
...Microcomputer, 60...Musical sound generation circuit, TSW...String trigger switch, FSW...Fretswitch.

Claims (1)

[Claims for Utility Model Registration] A stringed instrument body having a finger board on which fingering operations are performed, at least one string stretched over the stringed instrument body, and string vibration detection means for detecting vibrations of the string. a fingering operation position detecting means for detecting a fingering operation position performed on the finger board; and a sound specifying a pitch corresponding to the fingering operation position detected by the fingering operation position detecting means. pitch specifying means; musical sound generation instructing means for instructing the string vibration detecting means to generate a musical tone having a pitch specified by the pitch specifying means in response to the start of vibration of the string; and the operation. a determining means for determining whether the fingering operating position detected by the position detecting means has shifted to another fingering operating position or to an open string operating position; a mode switching means; When the discrimination means determines that the fingering operation position has shifted to the open string operation position, depending on the switching state of the mode switching means, the musical tone being generated is muted or the pitch of the tone being generated is changed. an electronic stringed instrument, comprising: selection means for selecting whether to change the pitch to a pitch corresponding to the open string operation position;