Reducing noise in audio systems

Details Reducing noise in audio systems Reducing noise in audio systems

2007-01-30

2007-01-30

Chin, Vivian (Department: 2615)

Electrical audio signal processing systems and devices

Directive circuits for microphones

C381S091000, C381S122000

Reexamination Certificate

active

10193825

ABSTRACT:
Two or more microphones receive acoustic signals and generate audio signals that are processed to determine what portion of the audio signals result from (i) incoherence between the audio signals and/or (ii) audio-signal sources having propagation speeds different from the acoustic signals. The audio signals are filtered to reduce that portion of one or more of the audio signals. The present invention can be used to reduce turbulent wind-noise resulting from wind or other airjets blowing across the microphones. Time-dependent phase and amplitude differences between the microphones can be compensated for based on measurements made in parallel with routine audio system processing.

REFERENCES:
patent: 5325872 (1994-07-01), Westermann
patent: 5515445 (1996-05-01), Baumhauer, Jr. et al.
patent: 5602962 (1997-02-01), Kellermann
patent: 5687241 (1997-11-01), Ludvigsen
patent: 5878146 (1999-03-01), Andersen
patent: 6272229 (2001-08-01), Baekgaard
patent: 6292571 (2001-09-01), Sjursen
patent: 6339647 (2002-01-01), Andersen et al.
patent: 06303689 (1994-10-01), None
patent: 2001124621 (2001-05-01), None
patent: WO 95 16259 (1995-06-01), None

Affiliated with

Also associated with

Rating

Reducing noise in audio systems does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reducing noise in audio systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reducing noise in audio systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3788377