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.
Athanasopoulos, G & Verhelst, W 2013, A Phase-Modified Approach for TDE-Based Acoustic Localization. in F Bimbot, C Cerisara, C Fougeron, G Gravier, L Lamel, F Pellegrino & P Perrier (eds), Proceedings of the 14th Annual Conference of the International Speech Communication Association (Interspeech 2013): Speech in Life Sciences and Human Societies. International Speech Communication Association Annual Conference Proceedings, ISCA, pp. 2890-2894, 14th Annual Conference of the International Speech Communication Association (Interspeech 2013), Lyon, France, 25/08/13.
Athanasopoulos, G., & Verhelst, W. (2013). A Phase-Modified Approach for TDE-Based Acoustic Localization. In F. Bimbot, C. Cerisara, C. Fougeron, G. Gravier, L. Lamel, F. Pellegrino, & P. Perrier (Eds.), Proceedings of the 14th Annual Conference of the International Speech Communication Association (Interspeech 2013): Speech in Life Sciences and Human Societies (pp. 2890-2894). (International Speech Communication Association Annual Conference Proceedings). ISCA.
@inproceedings{e5da645876154fd3b4379406e91a5c61,
title = "A Phase-Modified Approach for TDE-Based Acoustic Localization",
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.",
keywords = "time delay estimation, generalized cross correlation, adaptive eigenvalue decomposition, noise phase spectrum",
author = "Georgios Athanasopoulos and Werner Verhelst",
year = "2013",
month = aug,
language = "English",
isbn = "978-1-62993-443-3",
series = "International Speech Communication Association Annual Conference Proceedings",
publisher = "ISCA",
pages = "2890--2894",
editor = "F. Bimbot and C. Cerisara and C. Fougeron and G. Gravier and L. Lamel and F. Pellegrino and P. Perrier",
booktitle = "Proceedings of the 14th Annual Conference of the International Speech Communication Association (Interspeech 2013)",
note = "14th Annual Conference of the International Speech Communication Association (Interspeech 2013), Interspeech 2013 ; Conference date: 25-08-2013 Through 29-08-2013",
url = "http://www.interspeech2013.org/",
}