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A Combined Variable Step Size Strategy for Two Microphones Acoustic Feedback Cancellation using Proportionate Algorithms

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Authors
Albu, F.
Tran, Linh Thi Thuc
Nordholm, Sven
Date
2017
Type
Conference Paper

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Albu, F. and Tran, L.T.T. and Nordholm, S. 2017. A Combined Variable Step Size Strategy for Two Microphones Acoustic Feedback Cancellation using Proportionate Algorithms, 2017 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC 2017), pp. 1373-1377.
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2017 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC 2017)
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Department of Electrical and Computer Engineering
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Abstract

This paper proposes to use a combination of the improved proportionate normalized least mean square (IPNLMS) algorithm and a new algorithm called combined-stepsize IPNLMS (CSS-IPNLMS) algorithm in the two microphone closed-loop feedback cancellation technique. The simulation results indicate an improvement in convergence speed of the proposed algorithms as compared to previously suggested methods, especially for the case of the normal feedback path.