Touch response sensor for an electronic musical instrument
US4079651A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 25, 1977 |
| Grant date | Mar 21, 1978 |
| Priority date | — |
| Expiry date | Jan 25, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S84/07
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
This invention relates to a touch response sensor for an electronic musical instrument which may control the volume, pitch, tone-color or the like of the musical tones produced by the instrument upon depression of the key responsive to the key depressing pressure. In order to detect the key depressing pressure, the touch response sensor has an electrically conductive resilient member having two legs downwardly extending therefrom for producing resistance variations between contact pieces provided on a base plate under the resilient member in response to the key depressing pressure. The contact pieces are, for example, connected via lines to a voltage-controlled variable-frequency oscillator circuit, voltage-controlled variable filter circuit, voltage-controlled variable gain amplifier circuit or the like so as to vary the volume and the like of the tones in accordance with the key depressing pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.