Music – Instruments
Patent
1985-05-17
1987-01-06
Perkey, William B.
Music
Instruments
84 127, 364569, 364722, G10H 102, G10H 146, G06F 102, G04F 1000
Patent
active
046337504
ABSTRACT:
A key-touch value control device for an electronically operated musical instrument including a series of keys, wherein the state of each of the keys is detected to produce a succession of key-state signals each indicative of one of the key-on state, key-off state and key-fly state of the key. In response to each of the key-state signals, a key-touch value signal is produced which is variable with the velocity at which the key is being depressed toward the key-on state and which is representative of the volume of the sound to be produced after the key has reached the key-on state.
REFERENCES:
patent: 3882751 (1975-05-01), Tomisawa et al.
patent: 4067253 (1978-01-01), Wheelwright et al.
patent: 4144789 (1979-03-01), Deutsch
patent: 4185532 (1980-01-01), Hiyoshi
patent: 4493237 (1985-01-01), DeLong et al.
patent: 4523288 (1985-06-01), Hayashi
patent: 4558623 (1985-12-01), Buchla
Perkey William B.
Roland Kabushiki Kaisha
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