Joint Estimation of Glottal Source and Vocal Tract Filter from Speech Signal and some Fundamental Frequency Detection Methods

Vicky Lu $<$vickylu at ccrma$>$ (CCRMA/EE)

For this week's seminar, I will talk about joint estimation of glottal source and vocal tract filter from speech signal and some fundamental frequency detection methods.

The goal is to build a voice model which is flexible enough for voice modification and interpolation between different states, and yet simple enough such that we can estimate the model parameters to reproduce a known speech signal. To ease the estimation, the source filter type voice model is chosen. At this talk, I will review the source filter type speech model and some methods to estimate glottal source and vocal tract filter from speech signal. A primitive model and its associated estimation procedure (not complete yet ...) will be introduced.

Fundamental frequency estimation is often necessary for pitch synchronize joint estimation of glottal source and vocal tract filter. The fundamental frequency is defined as a glottal cycle here. I will talk about 2 frequency domain methods (cepstrum based method and Harmonic product spectrum) and 2 time domain methods (AMDF and SRFD).

See u there !

vicky