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Conference Paper

Blind Adaptive SIMO Acoustic System Identification Using a Locally Optimal Step-Size

Authors: Hu, Mathieu; Sharma, Dushyant; Doclo, Simon; Brookes, Mike; Naylor, Patrick A.

AES Conference: 60th International Conference: Dereverberation and Reverberation of Audio, Music, and Speech · Paper 6-2 · January 2016

Abstract

Blind adaptive identification of a Single-Input Multiple-Output (SIMO) acoustic system has useful applications including acoustic environment sensing, source localization and, in combination with multichannel equalization, dereverberation. An empirically chosen step-size is usually employed in blind system identification algorithms based on cross-relation error minimization. Although some adaptive step-size approaches have been proposed in the literature, the derivations rely, in some cases, on coarse approximations. In this paper, a locally optimal adaptive-step size exploiting the algebraic nature of the problem is derived. Experimental results using simulated room impulse responses show that the proposed algorithm has higher initial convergence rate.

Details

Published in
AES Conference: 60th International Conference: Dereverberation and Reverberation of Audio, Music, and Speech
Paper number
6-2
Publication date
January 6, 2016
Session subject
Paper Session 6
Affiliation
Department of Medical Physics and Acoustics, University of Oldenburg, Oldenburg, Germany; Imperial College London, London, UK; Voicemail-To-Text Research, Nuance Communications Inc., Marlow, UK (See document for exact affiliation information.)
Type
Conference Paper