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Adaptive Linearization of a Loudspeaker

Nonlinear distortions in a loudspeaker impair sound quality. An adaptive linearization technique was previously developed and simulated on a theoretical model by the authors. This paper presents new results on this topic. A novel frequency-weighting technique is presented for an adaptive inverse linear filter and it attacks the difficulties in inverse modeling caused by the bandpass nature of a loudspeaker transfer function. The adaptive linearization technique, together with the frequency weighting method was tested on a model extracted from measured loudspeaker data. A substantial reduction in distortion was observed.

Authors: Gao, Frank X.Y.; Snelgrove, W. Martin
Affiliations: Gao Research & Consulting Ltd., Scarborough, Ontario, Canada ; University of Toronto, Department of Electrical Engineering, Toronto, Ontario, Canada(See document for exact affiliation information.)
AES Convention:93 (October 1992) Paper Number:3377 Import into BibTeX
Subject:Adaptive Filters

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