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Robust direction-of-arrival estimation of two simultaneous plane waves from a B-format signal

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2 Author(s)
Oliver Thiergart ; International Audio Laboratories Erlangen, A joint institution of the University of Erlangen-Nuremberg and Fraunhofer IIS, Germany ; Emanuël A. P. Habets

The instantaneous direction-of-arrival (DOA) of sound is a crucial parameter in the analysis of acoustic scenes. More complex acoustic scenes are often modelled as a sum of two plane waves, which requires a DOA estimator that can provide two DOAs per time and frequency. This paper proposes an approach which computes two DOAs per time and frequency from a B-format microphone signal. The proposed estimator outperforms the state-of-the-art approach by considering also diffuse sound and microphone noise in the signal model. The estimator includes an averaging process prior to computing the DOA estimates, as well as a fallback solution in case no valid results can be obtained. Simulation results demonstrate the practical applicability of the presented algorithm.

Published in:

Electrical & Electronics Engineers in Israel (IEEEI), 2012 IEEE 27th Convention of

Date of Conference:

14-17 Nov. 2012