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.

Authors: Hu, Mathieu; Sharma, Dushyant; Doclo, Simon; Brookes, Mike; Naylor, Patrick A.
Affiliations: 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.)
AES Conference: 60th International Conference: DREAMS (Dereverberation and Reverberation of Audio, Music, and Speech) (January 2016)
Paper Number: 6-2
Publication Date: January 27, 2016
Subject: Paper Session 6

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