Sixth European Conference on Speech Communication and Technology

Budapest, Hungary
September 5-9, 1999

Analysis of Sources of Variability in Speech

Sachin Kajarekar (1), Narendranath Malayath (1), Hynek Hermansky (1,2)

(1) Oregon Graduate Institute of Science and Technology, Portland, OR, USA
(2) International Computer Science Institute, Berkeley, CA, USA

The variability in the speech signal can be attributed to the following sources: (a) Phonetic content, (b) Speaker and Channel, and (c) Coarticulation or context. In this paper, the variability in speech is decomposed using Two Factor Analysis of Variance (ANOVA) with the above mentioned sources as factors. The speech variability is decomposed in temporal and spectral domain separately and structure of these sources of variability in time-frequency plane is described. Although these factors are not indepdendent, it is shown that they can be studied independently after modeling the interaction between the factors.

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Bibliographic reference.  Kajarekar, Sachin / Malayath, Narendranath / Hermansky, Hynek (1999): "Analysis of sources of variability in speech", In EUROSPEECH'99, 343-346.