Fifth International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications (MAVEBA 2007)

Florence, Italy
December 13-15, 2007

An Experiment in Vocal Tract Length Estimation

A. Sitchi (1), Francis Grenez (1), Jean Schoentgen (1,2)

(1) Laboratory of Images, Signals and Telecommunication Devices, Université Libre de Bruxelles, Bruxelles, Belgium
(2) National Fund for Scientific Research, Belgium

The presentation concerns the estimation of the vocal tract length of a speaker on the base of her formant frequencies and the formant frequencies and known tract length of a reference speaker. The length prediction is founded on a rule inferred from Webster’s equation that describes the propagation of a planar acoustic wave in a loss-less vocal tract. The length prediction experiments have been crosslanguage, cross-gender and cross-corpora. Results show that the relative length prediction error is less than 3%, which is inferior to the error made assuming typical tract lengths of 15 and 17 cm for male and female speakers respectively.

Full Paper (reprinted with permission from Firenze University Press)

Bibliographic reference.  Sitchi, A. / Grenez, Francis / Schoentgen, Jean (2007): "An experiment in vocal tract length estimation", In MAVEBA-2007, 101-104.