JPS61182569U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is an overall circuit diagram of an embodiment of this invention, Fig. 2 is a block diagram of various registers, Fig. 3 is a block diagram of the keyboard switch input section, etc., Fig. 4 is a flowchart in guide mode. Figure 5 is a flowchart for guide mode, Figures 6 to 11
12 is a diagram of the relationship between the number of incorrect keys and scores, FIG. 13 is a diagram of the relationship with timing deviation, and FIG. 14 is a score showing four types of Juan Juare. 1...Keyboard, 2...Switch input section, 3...LED,
4...CPU, 4A...Register section, P1, P2, L
1, L2, R, M, F1, F2, F3, F4, K
...Register, 5...ROM pack, 6...RAM for automatic performance, 7...Timer, 8...Melody sound generation circuit, 9
...Automatic accompaniment control circuit, 10...Automatic accompaniment pattern data ROM, 11...Automatic accompaniment sound generation circuit, 12...Amplifier, 13...Speaker.

Claims (1)

[Scope of utility model registration request] In an electronic musical instrument in which a performance is performed by operating keys according to lighting instructions of a display provided corresponding to each key on a keyboard, a comparison is made between the performance sound indicated by the display and the operated key. 1. An electronic musical instrument comprising: a determining means for determining whether or not the performance has been accurately performed; and a display controlling means for lighting up a predetermined number of the display bodies in accordance with the determination result of the determining means.