Feedback cancellation using bandwidth detection

Electrical audio signal processing systems and devices – Hearing aids – electrical – Noise compensation circuit

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C381S312000, C381S318000, C381S071120

Reexamination Certificate

active

07106871

ABSTRACT:
A method for canceling feedback in an acoustic system including a microphone, a signal path, a speaker and means for detecting presence of feedback between the speaker and the microphone, the method including providing an LMS algorithm for processing the signal; where the LMS algorithm operates with a predetermined adaptation speed when feedback is not present; where the LMS algorithm operates an adaptation speed faster than the predetermined adaptation speed when feedback is present, and where the means for detecting the presence of feedback is used to control the adaptation speed selection o the LMS algorithm, where the feedback detection means comprises bandwidth detection means for determining the presence of a feedback signal.

REFERENCES:
patent: 4658426 (1987-04-01), Chabries et al.
patent: 5091952 (1992-02-01), Williamson et al.
patent: 5259033 (1993-11-01), Goodings et al.
patent: 5402496 (1995-03-01), Soli et al.
patent: 5748751 (1998-05-01), Janse et al.
patent: 0581261 (1994-02-01), None
patent: 9320668 (1993-10-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Feedback cancellation using bandwidth detection does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Feedback cancellation using bandwidth detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Feedback cancellation using bandwidth detection will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3606767

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.