Music – Instruments – Electrical musical tone generation
Patent
1989-09-21
1991-09-10
Shoop, Jr., William M.
Music
Instruments
Electrical musical tone generation
84670, 84718, 25022714, 385 1, 385 13, H01J 516
Patent
active
050463942
ABSTRACT:
The musical tone control apparatus generates a musical tone control signal in response to a motion at a certain part of a human body, preferably a bending motion at an articulation of a finger, wherein it includes a light emitting element, a photo-conductive member and a light receiving element. The light emitted from the light emitting element is transmitted through the photo-conductive member whose light transmission rate varies in response to the force applied thereon, so that the amount of the light transmitted through the photoconductive member is reduced. Such reduced amount of the transmitted light is received by the light receiving element. Based on the received light, the musical tone control signal is generated. Thus, by bending the photo-conductive member, the musical tone control signal can be varied. Preferably, the light emitting element is a photodiode, the photo-conductive member is an optical fiber, and the light receiving element is a phototransistor.
REFERENCES:
patent: 4519671 (1985-05-01), Curtis et al.
patent: 4542291 (1985-09-01), Zimmerman
patent: 4627324 (1986-12-01), Zwosta
patent: 4633079 (1986-12-01), Rieger
patent: 4635516 (1987-01-01), Giannini
patent: 4655114 (1987-04-01), Sunada
patent: 4920848 (1990-05-01), Suzuki
Sugiyama Jun
Suzuki Hideo
Shoop Jr. William M.
Sircus Brian
Yamaha Corporation
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