Audio distortion eliminator

Details Audio distortion eliminator Audio distortion eliminator

1980-11-26

1982-05-11

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

179 1P, 358197, 455307, 455309, 455312, H04N 560

Patent

active

043297145

ABSTRACT:
An audio distortion elimination circuit is provided which eliminates the effects of periodic decreases in signal amplitude of an audio signal. A comb filter includes an undelayed signal path, a signal path including a delay line and a combining circuit coupled between a source of audio signals and an audio output circuit. The combining circuit combines the delayed and undelayed audio signals to provide a response for the comb filter which is a function of the delay of the delay line and exhibits periodically recurring points of maximum attenuation at the fundamental frequency of the periodic decreases in signal amplitude and at harmonics thereof. The comb filter may be made adaptive so that comb filtering is provided only during reception of a distorted signal.

REFERENCES:
patent: 4096516 (1978-06-01), Pritchard
patent: 4153815 (1979-05-01), Chaplin et al.
patent: 4158209 (1979-06-01), Levine
patent: 4232381 (1980-11-01), Rennick et al.
patent: 4237485 (1980-12-01), Saito et al.

Affiliated with

Also associated with

Rating

Audio distortion eliminator does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-759829