Baseband discriminator for frequency or transform modulation

Details Baseband discriminator for frequency or transform modulation Baseband discriminator for frequency or transform modulation

1982-09-30

1985-02-12

LaRoche, Eugene R.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329122, 329124, 329135, 328158, 455214, 455337, G06G 762, H03D 500

Patent

active

044994265

ABSTRACT:
A baseband discriminator decodes a pair of trigonometric transform function signals, sin f(t) and cos f(t), to provide an original audio signal f(t) by first deriving the derivative of the audio signal from the pair of trigonometric signals and integrating that derivative. The discriminator is used in a new system of SSB transmission termed "transform modulation" and also in FM transmission.

REFERENCES:
patent: 3035231 (1962-05-01), Neelands et al.
patent: 3568067 (1971-03-01), Williford
patent: 3609555 (1971-09-01), Van Blerkom et al.
patent: 3634773 (1972-01-01), Kobayashi
patent: 3971988 (1976-07-01), Denenberg

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