Method and apparatus for reducing periodic interference in audio

Details Method and apparatus for reducing periodic interference in audio Method and apparatus for reducing periodic interference in audio

1997-02-14

1999-10-19

Chang, Vivian

Electrical audio signal processing systems and devices

Noise or distortion suppression

Spectral adjustment

H04B 1500

Patent

active

059701560

ABSTRACT:
The present invention protects a human operator listening to electronically-generated audible signals from potentially adverse effects of periodic interference contained in the audible signals. The periodic interference is modeled and subtracted from the received audio signal. As a result, the actual periodic interference, being reduced or removed, does not adversely affect the hearing of the operator listening to the received audible signals. Moreover, the human operator still readily discerns the voice received along with the periodic interference despite the fact that the interference has been removed. Thus, while the voice suffers little or no attenuation, the periodic interference is selectively and substantially attenuated.

REFERENCES:
patent: 4480335 (1984-10-01), Kishi
patent: 4965854 (1990-10-01), Glazebrook
patent: 5170489 (1992-12-01), Glazebrook
patent: 5267305 (1993-11-01), Prohs et al.
patent: 5455819 (1995-10-01), Sugiyama
patent: 5608653 (1997-03-01), Palmer et al.
patent: 5619183 (1997-04-01), Ziegra et al.
patent: 5764757 (1998-06-01), Christinger
Wi Drow and Stearns, Adaptive Signal Processing, 1985, pp. 16-18 & 349-350.

Affiliated with

Also associated with

Rating

Method and apparatus for reducing periodic interference in audio does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for reducing periodic interference in audio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for reducing periodic interference in audio will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2066208