Method and means for introducing additional asymmetry into audio

Details Method and means for introducing additional asymmetry into audio Method and means for introducing additional asymmetry into audio

1979-10-04

1981-10-13

Grimm, Siegfried H.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

328150, 328168, 332 38, 455108, H03C 100, H03G 1100, H03K 5153

Patent

active

042951062

ABSTRACT:
Audio processing equipment for introducing additional asymmetry so as to provide increased fullness of modulation of associated transmitters. Audio waveshapes are altered so as to accentuate the positive going portions of the waveshape. The alteration of the waveshape is typically such that the waveshape will produce positive going modulation of approximately 125% when the negative going modulation is approximately 100%.

REFERENCES:
patent: 2316567 (1943-04-01), Davis
patent: 3060389 (1962-10-01), Kahn
patent: 3247457 (1966-04-01), Kaenel
patent: 3320536 (1967-05-01), Lockwood
patent: 3370294 (1968-02-01), Kahn
patent: 4064408 (1977-12-01), Hon et al.
patent: 4143325 (1979-03-01), Kahn
patent: 4150253 (1979-04-01), Knoppel
"Transmission Systems for Communications," 4th Edition, Feb. 1970, Western Electric Co., Inc., Technical Publications, Winston-Salem, N.C., pp. 82-83.
Radio Engineers' Handbook, F. E. Terman, McGraw-Hill, NY, 1943, pp. 593-596.

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