Noise reduction system

Details Noise reduction system Noise reduction system

1986-07-25

1987-10-27

Isen, Forester W.

Electrical audio signal processing systems and devices

Noise or distortion suppression

Interpolation

455223, 455225, 455221, H04B 110, H04B 1500

Patent

active

047035072

ABSTRACT:
A noise reduction system and method for reducing noise occurring during pauses in information bearing audio signals has an audio input connected to one input of a differential output circuit. A variable gain circuit has an input connected to the audio input and an output connected to the other input of the differential circuit. A dc control signal is derived from the incoming signals and controls the variable gain circuit to cause cancellation of a noise only signal during periods of no information bearing audio signals.

REFERENCES:
patent: 3478268 (1969-11-01), Coviello
patent: 3493871 (1970-02-01), Mason et al.
patent: 3818362 (1974-06-01), Van Sluys
patent: 3928721 (1975-12-01), Holden
patent: 3973210 (1976-08-01), Holden
patent: 4220926 (1980-09-01), Buckner
patent: 4232381 (1980-11-01), Rennick et al.
patent: 4272846 (1981-06-01), Muratani et al.
patent: 4414689 (1983-11-01), Enderson
patent: 4461025 (1984-07-01), Franklin
patent: 4495643 (1985-01-01), Orban

Affiliated with

Also associated with

Rating

Noise reduction system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Noise reduction system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noise reduction system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1276888