Acoustic feedback elimination using adaptive notch filter algori

Details Acoustic feedback elimination using adaptive notch filter algori Acoustic feedback elimination using adaptive notch filter algori

1996-07-26

1999-12-07

Lee, Ping W

Electrical audio signal processing systems and devices

Feedback suppression

381 83, H04B 1500

Patent

active

059996315

ABSTRACT:
Techniques for reducing unwanted acoustic feedback in a space are carried out by an adaptive notch filter algorithm that adjusts a notch to a plurality of different notch values in order to locate feedback. The results obtained by performing the algorithm at various notch values are compared. Based on the comparison, the parameters for the algorithm are adjusted for processing of the input signals to reduce the feedback.

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patent: 5245665 (1993-09-01), Lewis et al.
patent: 5442712 (1995-08-01), Kawamura et al.
patent: 5506910 (1996-04-01), Miller et al.
patent: 5533120 (1996-07-01), Staudacher

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