Music – Instruments
Patent
1974-10-17
1976-06-01
Weldon, Ulysses
Music
Instruments
84DIG7, 200159B, G10H 100
Patent
active
039600440
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.
REFERENCES:
patent: 1847119 (1932-03-01), Lertes et al.
patent: 2036691 (1936-04-01), Gourov
patent: 2141231 (1938-12-01), Trautwein
patent: 2340213 (1944-01-01), Ellsworth
patent: 2445660 (1948-07-01), Bruestle
patent: 2848920 (1958-08-01), Lester
Kawamura Kiyoshi
Nagai Yohei
Nippon Gakki Seizo Kabushiki Kaisha
Weldon Ulysses
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