Telephone transducer with improved frequency response

Details Telephone transducer with improved frequency response Telephone transducer with improved frequency response

1986-10-28

1988-02-23

Rubinson, Gene Z.

Electrical audio signal processing systems and devices

Noise or distortion suppression

Interpolation

381 98, 381117, 381159, 181160, H03G 500

Patent

active

047275839

ABSTRACT:
An audio arrangement includes a thin speaker/transducer positioned within a portable housing wherein the speaker cavity is dimensioned to move the resonant frequency of the speaker/housing combination up to approximately the free-air cutoff frequency of the speaker/tranducer. The resulting response then falls off at about 6 db/octave below that point. An amplifier having gain increasing at 6 db/octave is placed in the signal input path for creating an essentially flat frequency response in the normally desired audio range.

REFERENCES:
patent: 2423014 (1947-06-01), Gilman
patent: 2745508 (1956-05-01), Vadersen
patent: 3033945 (1962-05-01), Villchur
patent: 3246721 (1966-04-01), Martin
patent: 4403120 (1983-09-01), Yoshimi
patent: 4449019 (1984-05-01), Kakehi
patent: 4481662 (1984-11-01), Long et al.
patent: 4594478 (1986-06-01), Gumb
patent: 4646873 (1987-03-01), Bryson

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