Music – Instruments
Patent
1977-01-25
1978-03-21
Schaffer, Robert K.
Music
Instruments
84DIG7, 338 69, G10H 300
Patent
active
040796515
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.
REFERENCES:
patent: 1051675 (1913-01-01), Breed
patent: 3327045 (1967-06-01), Olson
patent: 3328507 (1967-06-01), Peterson
patent: 3657459 (1972-04-01), Peterson et al.
patent: 3657460 (1972-04-01), Cutler
patent: 3927593 (1975-12-01), Kawamura
patent: 3960044 (1976-06-01), Nagai et al.
Miska Vit W.
Nippon Gakki Seizo Kabushiki Kaisha
Schaffer Robert K.
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