Browsing by Author "Durou, Geoffrey"

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    Time Frequency Principal Components: Application to Speaker Identification
    (1999-01-01) Magrin-Chagnolleau, Ivan; Durou, Geoffrey; Digital Signal Processing (http://dsp.rice.edu/)
    In this paper, we propose a formalism, called vector filtering of spectral trajectories, which allows to integrate under a common formalism a lot of speech parameterization approaches. We then propose a new filtering in this framework, called time-frequency principal components (TFPC) of speech. We apply this new filtering in the framework of speaker identification, using a subset of the POLYCOST database. The results show an improvement of roughly 20% compared to the use of the classical cepstral coefficients augmented by their Delta-coefficients.