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Title: Glottal source estimation using an automatic chirp decomposition
Authors: Drugman, Thomas
Bozkurt, Barış
Dutoit, Thierry
Keywords: Speech processing
Mathematical transformations
Unit circles
Time alignment
Root distribution
Issue Date: 2010
Publisher: Springer
Source: Drugman, T., Bozkurt, B., and Dutoit, T. (2010). Glottal source estimation using an automatic chirp decomposition. Lecture Notes in Computer Science, 5933 LNAI, 35-42. doi:10.1007/978-3-642-11509-7_5
Abstract: In a previous work, we showed that the glottal source can be estimated from speech signals by computing the Zeros of the Z-Transform (ZZT). Decomposition was achieved by separating the roots inside (causal contribution) and outside (anticausal contribution) the unit circle. In order to guarantee a correct deconvolution, time alignment on the Glottal Closure Instants (GCIs) was shown to be essential. This paper extends the formalism of ZZT by evaluating the Z-transform on a contour possibly different from the unit circle. A method is proposed for determining automatically this contour by inspecting the root distribution. The derived Zeros of the Chirp Z-Transform (ZCZT)-based technique turns out to be much more robust to GCI location errors. © 2010 Springer-Verlag.
Description: International Conference on Nonlinear Speech Processing, NOLISP 2009; Vic; Spain; 25 June 2009 through 27 June 2009
ISBN: 9783642115080
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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