Music – Instruments
Patent
1979-03-21
1980-10-28
Witkowski, Stanley J.
Music
Instruments
361283, 361290, G10H 312
Patent
active
042300134
ABSTRACT:
An electro-acoustic transducer for a musical instrument, for producing electrical signals indicative of sound produced by playing of the instrument. The transducer comprises a housing of plastic material containing a capacitor microphone arrangement which comprises a first metal foil electrode within a sheath of metal foil which defines a second electrode. A dielectric separates the two electrodes. The capacitor microphone arrangement is sandwiched between a relatively rigid wall of the housing and a relatively flexible body of plastic material within the housing. The housing is adapted to be mounted in intimate contact with a surface of the instrument which vibrates in accordance with sound produced by playing of the instrument, so that the vibrations are transmitted to the electrodes. A constant electrical potential difference is applied to the electrodes and oscillatory voltages produced by the vibration of the electrodes are amplified by an amplifier to produce an electrical signal indicative of the music produced by the instrument.
REFERENCES:
patent: 2834243 (1958-05-01), Miessner
patent: 3267196 (1966-08-01), Welsh et al.
patent: 3510564 (1970-05-01), Wetsell et al.
patent: 3538232 (1970-11-01), Bachtig et al.
patent: 4002994 (1977-01-01), Fender
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