Musical tone control apparatus
US5046394A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1989 |
| Grant date | Sep 10, 1991 |
| Priority date | — |
| Expiry date | Sep 21, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2220/326
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.