Robust audio localization with phase unwrapping

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Details zur Publikation

Autorinnen und Autoren: Chen K, Geiger J, Kellermann W
Jahr der Veröffentlichung: 2017
Seitenbereich: 471-475
ISBN: 978-1-5090-4117-6
ISSN: 2379-190X
Sprache: Englisch


Abstract

Most of multichannel sound source Direction Of Arrival (DOA) estimation algorithms suffer from spatial aliasing problems. The phase differences between a pair of microphones are wrapped beyond the spatial aliasing frequency. A common solution is to adjust the distance between the microphones to obtain a suitable aliasing frequency, and take only the frequency band below the aliasing frequency for localization. With correct phase unwrapping, a broader frequency band can be utilized for localization. In this paper, we investigate a method for phase unwrapping solving the spatial aliasing problem for scenarios with a single source and high-level diffuse background noise (around 0dB SNR). The aliasing frequency is estimated from the signal, and is used to unwrap a phase difference vector. Pre- and post-processing steps are applied to increase the robustness. Our experiments with a large number of simulated and real signals demonstrate the robustness of our method in noise.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Kellermann, Walter Prof. Dr.-Ing.
Professur für Nachrichtentechnik


Zitierweisen

APA:
Chen, K., Geiger, J., & Kellermann, W. (2017). Robust audio localization with phase unwrapping. In Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) (pp. 471-475). New Orleans, US.

MLA:
Chen, Kainan, Jürgen Geiger, and Walter Kellermann. "Robust audio localization with phase unwrapping." Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), New Orleans 2017. 471-475.

BibTeX: 

Zuletzt aktualisiert 2019-19-04 um 01:10