Electrostatic transducer and acoustic and electric signal integr

Details Electrostatic transducer and acoustic and electric signal integr Electrostatic transducer and acoustic and electric signal integr

1975-02-14

1977-02-01

Stellar, George G.

H04R 1900

Patent

active

040063178

ABSTRACT:
An electrostatic transducer of the type comprising electrically conductive plates and a conductive, flexible, vibratable diaphragm. The transducer may either be a flat radiator or of the folded type. The surface area of the plates is substantially smaller than that of the diaphragm. Additionally, the plates are preferably staggered to reduce both capacitance effects and the required driving power. The plates may be of different sizes to control dispersion of the sound. Instead of applying an electric bias to the structure, an electret may be used to obviate the necessity of a bias field. The transducer may be used as both a loudspeaker or a microphone. It may be driven by electric signals or partially by electric signals and acoustic waves thus forming an integrator. Finally, it may be driven solely by acoustic waves.

REFERENCES:
patent: 1809754 (1931-06-01), Steedle
patent: 1831278 (1931-11-01), Wolfe
patent: 2863953 (1958-12-01), Reed et al.
patent: 2993097 (1961-07-01), Swift
patent: 3008013 (1961-11-01), Williamson et al.
patent: 3136867 (1964-06-01), Brettell
patent: 3892927 (1975-07-01), Lindenberg

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