Keyboard arrangement having after-control signal detecting sensor in electronic musical instrument
US3960044A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1974 |
| Grant date | Jun 1, 1976 |
| Priority date | — |
| Expiry date | Oct 17, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S84/07
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A keyboard arrangement having an after-control signal detecting sensor means connected to electric circuitry to use the signal generated by this sensor means as an after-control signal for controlling various musical effects. This sensor means comprises a conductive flexible first electrode, a conductive second electrode, and a conductive elastic member, such as a conductive rubber, interposed between the first and second electrodes and adhered thereto, the conductive elastic member varying its resistance according to the degree by which it is compressed and deformed. With this arrangement, the resistance of the conductive elastic member will vary as it is compressed and/or deformed by playing keys in proportion to the positions of the depressed keys. This variation of resistance is employed so as to after-control the tone coloring, tone volume, vibrato, and other musical effects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.