Music – Instruments
Patent
1979-01-02
1980-09-23
Truhe, J. V.
Music
Instruments
84 101, 84 126, G10H 306
Patent
active
042235847
ABSTRACT:
An electronic musical instrument is provided with an upper, a lower and a pedal keyboards and musical tone generating circuits dependently corresponding to respective keyboards and, in addition thereto, an auxiliary musical tone generating circuit which is independent of the keyboards and can be selectively coupled with a particular keyboard according to the designation by a keyboard selection switch. This auxiliary musical tone generating circuit produces tone signals having a particular tone color. Key codes for a selected one of the keyboards among key codes supplied by a channel assignment circuit are latched separately in the auxiliary circuit, and musical tones corresponding to the latched key codes are produced in this particular tone color. An envelope control circuit of the electronic musical instrument includes a detection circuit which detects switching of the keyboard selection switch and the amplitude envelope of a musical tone is temporarily cleared upon detection of the switching of the keyboard selection switch.
REFERENCES:
patent: 3697664 (1972-10-01), Hiyama
patent: 3803338 (1974-04-01), Adachi
patent: 3823246 (1974-07-01), Hebeisen et al.
patent: 3922943 (1975-12-01), Niinomi
patent: 4147085 (1979-04-01), Robinson et al.
Aoki Eiichiro
Nakada Akira
Okumura Takatoshi
Oya Akiyoshi
Uchiyama Yasuji
Isen Forester W.
Nippon Gakki Seizo Kabushiki Kaisha
Truhe J. V.
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