Abstract
An on-line interactive computer program is described for calculating the parameters of an articulatory model of the human vocal tract corresponding to measured amplitude spectra of speech sounds. The computational procedure comprises two stages: (1) determination of the poles and zeroes of the amplitude spectrum; (2) calculation of a vocal-tract shape having the computed pole-zero pattern. In the first stage, a match to the input spectrum is synthesized from a predetermined number of resonance curves of individual pole or zero pairs having adjustable frequency and bandwidth values. In the second stage of the computation, the cross-sectional area of the vocal tract and the degree of nasal coupling are iteratively adjusted until a satisfactory match to the pole-zero pattern of the input spectrum is achieved. Specification of the vocal-tract shape in terms of the Fourier coefficients of the logarithmic area function leads to a rapidly converging matching strategy. Results for the analysis of vowel-consonant-vowel sequences are given.
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call