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Conference Publication

A Phase-Modified Approach for TDE-Based Acoustic Localization

Host Publication: 14th Annual Conference of the International Speech Communication Association (Interspeech 2013)

Authors: G. Athanasopoulos and W. Verhelst

Publisher: ISCA

Publication Date: Aug. 2013

Number of Pages: 5

ISBN: 978-1-62993-443-3


Abstract:

A novel approach is presented for acoustic localization based on Time Delay Estimation (TDE). The proposed method relies on the observation that the spectrum of many real-world ambient noise types sufficiently satisfies the assumption of sinusoid stationarity. By employing noise phase spectrum projection, we approximate the phase information of the equivalent clean source signals received by the microphone array. The phase-modified signals can be effectively used with different methods of conventional TDE. The proposed approach is evaluated with real noise data and for different reverberation times. Experimental results confirm the suitability of the sinusoid stationarity concept and show that the proposed method performs well under both reverberant and noisy acoustic conditions.

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