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

: Thiergart, O.; Habets, E.A.P.


Institute of Electrical and Electronics Engineers -IEEE-:
27th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2012. Vol.2 : 14 - 17 Nov. 2012, Eilat / IEEE Israel Section
Piscataway: IEEE, 2012
ISBN: 978-1-4673-4682-5
ISBN: 978-1-4673-4680-1 (print)
ISBN: 978-1-4673-4681-8
IEEE Convention of Electrical & Electronics Engineers in Israel (IEEEI) <27, 2012, Eilat>
Conference Paper
Fraunhofer IIS ()

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.