Music – Instruments
Patent
1986-04-25
1987-09-22
Witkowski, S. J.
Music
Instruments
84 128, 84478, G09B 1504, G10H 136, G10H 700
Patent
active
046947230
ABSTRACT:
A keyboard type electronic musical instrument in which note data and duration data are read out from a memory in accordance with the progress of a musical piece, and a control circuit (CPU) turns on display devices provided for individual keys on a keyboard in response to note data, thus training a player to operate keys specified by the display devices. The control circuit counts each instance of noncoincidence between a key represented by the note data and an operated key on the keyboard, and obtains deviations between a key operation timing defined by duration data and the timing of key operation on the keyboard. After the end of a performance, the control circuit informs the player of the number of the mis-key operations or the accumulation of key operation timing deviations by means of the display devices. A number of display devices corresponding to the accuracy of the performance are lit.
REFERENCES:
patent: 4364299 (1982-12-01), Nakada et al.
patent: 4378720 (1983-04-01), Nakada et al.
patent: 4506580 (1985-03-01), Koike
Shinohara Isao
Yoshimoto Itsuro
Casio Computer Co. Ltd.
Witkowski S. J.
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