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An Accurate Method of Detection and Cancellation of Multiple Acoustic Feedbacks

This paper presents a new method to the adaptive cancellation of acoustic feedbacks. The method uses high resolution frequency analysis and high-Q notch filters so as to accurately detect feedbacks and cancel them without disturbing noticeably the main audio spectrum. The method will be described, its implementation on a TMS320C6711 DSP platform for real time operation will be explained, and results for the adaptive cancellation of two simultaneous acoustic feedbacks will be presented.

Authors: Ferreira, Anibal J. S.; Rocha, Ariel
Affiliations: INESC Porto; University of Porto(See document for exact affiliation information.)
AES Convention:118 (May 2005) Paper Number:6335 Import into BibTeX
Subject:Signal Processing

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