Audible noise reducing

Details Audible noise reducing Audible noise reducing

1990-09-18

1991-11-26

Isen, Forester W.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Broadcast or multiplex stereo

H04H 500

Patent

active

050688960

ABSTRACT:
A system for reducing audible noise in a stereo receiver includes a stereo demodulator having a monophonic signal output and a difference signal output. There is a left signal combiner and a right signal combiner. At least one filter having a controllable variable cutoff frequency intercouples at least one of the difference signal output and the monophonic signal output with the left and right combiners. A control signal generator has a control signal output coupled to the control signal input of the variable cutoff frequency filter.

REFERENCES:
patent: 4063042 (1977-12-01), Mallon
patent: 4093824 (1978-06-01), Grosjean
patent: 4208547 (1980-06-01), Simeau
patent: 4704726 (1987-11-01), Gibson
patent: 4748669 (1988-05-01), Klayman
patent: 4761814 (1988-08-01), Sugai et al.

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