| Joint source-filter optimization for robust
glottal source estimation in the presence of shimmer and jitter Prasanta Kumar Ghosh and Shrikanth Narayanan Speech Communication, Elsevier, Volume 53, No. 1, January 2011, pp 98-109 |
Abstract:
We
propose
a glottal source estimation method robust to shimmer and jitter
in the glottal flow. The proposed estimation method is based on a joint
source-filter optimization technique. The glottal source is modeled by
the Liljencrants-Fant (LF) model and the vocal tract filter is modeled
by an autoregressive filter, which is common in the source-filter
approach to speech production. The optimization estimates the
parameters of the LF model, the amplitudes of the glottal flow in each
pitch period, and the vocal tract filter coefficients so that the
speech production model best describes the observed speech samples.
Experiments with synthetic and real speech data show that the proposed
estimation method is robust to different phonation types with varying
shimmer and jitter characteristics.
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