Pressure transducer for musical instruments

Details Pressure transducer for musical instruments Pressure transducer for musical instruments

1976-02-02

1978-10-10

Jackmon, Edith S.

Music

Instruments

179 1A;, 179 1M, 338 4, 338 36, G10H 300, H04M 100, H01L 122, H01L 1010

Patent

active

041190076

ABSTRACT:
A pressure transducer comprised of a piezoresistance bridge on a semiconductor chip is employed as a pressure sensor in musical instruments having an air column through which pressure variations pass in producing sounds, such as in wind instruments and drums. A noiseless voltage preamplifier couples the transducer to a power preamplifier the output of which may then be amplified in a conventional audio amplifier. In the case of a wind instrument, the transducer is mounted between the cup or reed of the mouthpiece and the first key or finger hole, or in the air column in a direction opposite the first key or finger hole in the case of a transverse flute or similar reedless woodwind instrument for direct communication with the air column of the instrument.

REFERENCES:
patent: 2171793 (1939-09-01), Huth
patent: 2455501 (1948-12-01), Knight
patent: 3194870 (1965-07-01), Tondreau et al.
patent: 3439106 (1969-04-01), Goodale
patent: 3454703 (1969-07-01), Rose
patent: 3543629 (1970-12-01), Barcus
patent: 3820401 (1974-06-01), Lewis

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