7th International Conference on Spoken Language Processing

September 16-20, 2002
Denver, Colorado, USA

Intrinsic Phone Durations are Speaker-Specific

Hartmut R. Pfitzinger

University of Munich, Germany

This study examines the speaker’s influence on mean phone durations. As long as speech rate variation is present, the result of such a study would be trivial because every speaker has a particular speech rate that naturally modifies phone durations. Therefore, in order to eliminate its influence on phone duration, we developed a normalization procedure which evens out the local variability of speech rate, and then applied it to a large database of spoken German. As would be expected, general linear model statistical analysis (GLM) showed that speech rate normalization strongly reduced the variance explained by the factor ‘speaker’. Nevertheless, the variance explained by the interaction between ‘speaker’ and ‘phone type’ remained constant. Consequently, each speaker has individual intrinsic phone durations.


Full Paper

Bibliographic reference.  Pfitzinger, Hartmut R. (2002): "Intrinsic phone durations are speaker-specific", In ICSLP-2002, 1113-1116.