Fifth International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications (MAVEBA 2007)
In this paper we propose improvements to a
recent algorithm of speech decomposition into glottal
source and vocal tract contributions. This algorithm is
based on the Zeros of the Z-Transform (ZZT)
representation and requires restrictive conditions
about the analysis window. Inaccurate results of
decomposition can occur if these conditions are not
fulfilled. The improvement method consists in
considering an analogy with the LF model for the
glottal source and a tube model for the vocal tract.
Results are presented for a sustained vowel /a/ in both
time and spectral domain. Future developments are
Index Terms. Zeros of the Z-Transform, glottal source, vocal tract, speech decomposition, Glottal Closure Instant
Full Paper (reprinted with permission from Firenze University Press)
Bibliographic reference. Dubuisson, T. / Dutoit, Thierry (2007): "Improvement of source-tract decomposition of speech using analogy with LF model for glottal source and tube model for vocal tract", In MAVEBA-2007, 119-122.