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Title: Phase-based methods for voice source analysis
Authors: D’Alessandro, Christophe
Bozkurt, Barış
Doval, Boris
Dutoit, Thierry
Henrich, Nathalie
Tuan, Vu Ngoc
Sturmel, Nicolas
Keywords: Speech processing
Anticausal filter
Spectral domain modeling
Voice source analysis
Spectrum analysis
Issue Date: 2007
Publisher: Springer Verlag
Source: D’Alessandro, C., Bozkurt, B., Doval, B., Dutoit, T., Henrich, N., Tuan, V. N., and Sturmel, N. (2007). Phase-based methods for voice source analysis. Lecture Notes in Computer Science, 4885 LNAI, 1-27. doi:10.1007/978-3-540-77347-4_1
Abstract: Voice source analysis is an important but difficult issue for speech processing. In this talk, three aspects of voice source analysis recently developed at LIMSI (Orsay, France) and FPMs (Mons, Belgium) are discussed. In a first part, time domain and spectral domain modelling of glottal flow signals are presented. It is shown that the glottal flow can be modelled as an anticausal filter (maximum phase) before the glottal closing, and as a causal filter (minimum phase) after the glottal closing. In a second part, taking advantage of this phase structure, causal and anticausal components of the speech signal are separated according to the location in the Z-plane of the zeros of the Z-Transform (ZZT) of the windowed signal. This method is useful for voice source parameters analysis and source-tract deconvolution. Results of a comparative evaluation of the ZZT and linear prediction for source/tract separation are reported. In a third part, glottal closing instant detection using the phase of the wavelet transform is discussed. A method based on the lines of maximum phase in the time-scale plane is proposed. This method is compared to EGG for robust glottal closing instant analysis.
Description: International Conference on Nonlinear Speech Processing, NOLISP 2007; Paris; France; 22 May 2007 through 25 May 2007
ISBN: 9783540773467
ISSN: 0302-9743
Appears in Collections:Electrical - Electronic Engineering / Elektrik - Elektronik Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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