INTERSPEECH 2010
11th Annual Conference of the International Speech Communication Association

Makuhari, Chiba, Japan
September 26-30. 2010

Chirp Complex Cepstrum-Based Decomposition for Asynchronous Glottal Analysis

Thomas Drugman, Thierry Dutoit

Université de Mons, Belgium

It was recently shown that complex cepstrum can be effectively used for glottal flow estimation by separating the causal and anticausal components of speech. In order to guarantee a correct estimation, some constraints on the window have been derived. Among these, the window has to be synchronized on a Glottal Closure Instant. This paper proposes an extension of the complex cepstrum-based decomposition by incorporating a chirp analysis. The resulting method is shown to give a reliable estimation of the glottal flow wherever the window is located. This technique is then suited for its integration in usual speech processing systems, which generally operate in an asynchronous way. Besides its potential for automatic voice quality analysis is highlighted.

Full Paper

Bibliographic reference.  Drugman, Thomas / Dutoit, Thierry (2010): "Chirp complex cepstrum-based decomposition for asynchronous glottal analysis", In INTERSPEECH-2010, 657-660.