n South African Computer Journal - Speaker-specific variability of phoneme durations : reviewed article
|Article Title||Speaker-specific variability of phoneme durations : reviewed article|
|© Publisher:||South African Computer Society (SAICSIT)|
|Journal||South African Computer Journal|
|Author||C.J. Van Heerden and E. Barnard|
|Publication Date||Jun 2008|
|Pages||44 - 50|
|Keyword(s)||Eigenvectors, Maximum likelihood, Phoneme durations and Speech recognition|
The durations of phonemes varies for different speakers. To this end, the correlations between phonemes across different speakers are studied and a novel approach to predict unknown phoneme durations from the values of known phoneme durations for a particular speaker are presented, based on the maximum likelihood criterion. Several interesting patterns are observed. Phonemes from the same broad phonetic class tend to covary most strongly (and therefore intra-class predictions of unknown phoneme durations are most accurate), but significant cross-class correlations are also present. Consequently, knowledge of only a few highly-correlated phonemes' durations is necessary to make a good duration prediction.
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