DOA Estimation of Audio Sources in Reverberant Environments

Conference paper (2016)

Authors

JR Jensen Aalborg University
J.K. Nielsen Aalborg University, Bang & Olufsen A/S
R. Heusdens Aalborg University, Signal Processing Systems - EEMCS
M.G. Christensen Aalborg University
Research Group
Signal Processing Systems (EEMCS) (TU Delft)
Copyright: © 2016 Jesper Rindom Jensen, J.K. Nielsen, R. Heusdens, Mads Græsbøll Christensen
DOI
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https://doi.org/10.1109/icassp.2016.7471660
Maximum likelihood Reverberation Audio localization DOA estimation Nonlinear least squares
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Published Date

19-05-2016

Language

English

Reuse Rights

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Signal Processing Systems

Abstract

Reverberation is well-known to have a detrimental impact on many localization methods for audio sources. We address this problem by imposing a model for the early reflections as well as a model for the audio source itself. Using these models, we propose two iterative localization methods that estimate the direction-of-arrival (DOA) of both the direct path of the audio source and the early reflections. In these methods, the contribution of the early reflections is essentially subtracted from the signal observations before localization of the direct path component, which may reduce the estimation bias. Our simulation results show that we can estimate the DOA of the desired signal more accurately with this procedure compared to state-of-the-art estimator in both synthetic and real data experiments with reverberation.