Third International Conference on Spoken Language Processing (ICSLP 94)

Yokohama, Japan
September 18-22, 1994

Fast Formant Estimation of Children's Speech

Alan A. Wrench (1), M. M. Watson (2), D. S. Soutar (3), A. G. Robertson (4), John Laver (1)

(1) Centre for Speech Technology Research, University of Edinburgh, Edinburgh, Scotland
(2) Department of Speech Pathology and Therapy, Queen Margaret College, Edinburgh, UK
(3) Plastic Surgery Unit, Canniesburn Hospital, Bearsden, Glasgow, UK
(4) Beatson Oncology Centre, Western Infirmary, Glasgow, UK

Constrained Multiple Centroid Analysis is a method of form ant estimation already used successfully in the analysis of adult speech. In this paper we examine the performance of this approach when applied to the speech of children. The accuracy of the estimated formant frequency is measured for a range of excitation frequencies. In order to gauge absolute performance, an acoustic analogue of the vocal tract is used. Speed and accuracy of the Constrained Multiple Centroid Analysis are examined in a comparative study with a Linear Prediction based formant estimation algorithm. Results show that Multiple Centroid Analysis provides less bias towards the nearest harmonic than the established method based on Linear Prediction. Furthermore, computational efficiency makes it an attractive alternative to Linear Prediction.

Full Paper

Bibliographic reference.  Wrench, Alan A. / Watson, M. M. / Soutar, D. S. / Robertson, A. G. / Laver, John (1994): "Fast formant estimation of children's speech", In ICSLP-1994, 1651-1654.