Acoustic feedback cancellation system

Details Acoustic feedback cancellation system Acoustic feedback cancellation system

2005-07-22

2010-02-16

Mei, Xu (Department: 2614)

Electrical audio signal processing systems and devices

Feedback suppression

C381S083000, C381S066000, C381S096000, C379S406010, C379S406050, C379S406060, C379S406120, C379S406130, C379S406140

Reexamination Certificate

active

07664275

ABSTRACT:
A system for canceling acoustic feedback includes an input for receiving a digital audio signal and a processor configured to detect acoustic feedback signal in the digital audio signal and to determine the frequency of the feedback signal The system also includes a plurality of bandpass filters for attenuating the feedback signal. The processor is further configured to: select a bandpass filter from among the plurality of bandpass filters. The selected bandpass filter comprises a response characteristic that attenuates parts of the signal at the frequency of acoustic feedback signal.

REFERENCES:
patent: 5729614 (1998-03-01), Nagata et al.
patent: 6125187 (2000-09-01), Hanajima et al.
patent: 7574005 (2009-08-01), Tohyama et al.
patent: 2005/0190930 (2005-09-01), Desiderio
patent: 2006/0159282 (2006-07-01), Borsch

Affiliated with

Also associated with

Rating

Acoustic feedback cancellation 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 Acoustic feedback cancellation system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustic feedback cancellation system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4209634