Speech production models—Constraints and control strategies
Gunnar Fant, Qiguang Lin, Pierre Badin · The Journal of the Acoustical Society of America · 1988
Our modeling includes five areas of speech production. (1) Extension of the three-parameter vocal tract area function model of Fant (1960) to include bandwidths and to allow for variations of length and degree of asymmetry of the tongue section, and covariation of these parameters as well as overall VT length and configurations in the laryngeal region. (2) Algorithms for inverse transform, i.e., deriving VT parameters from formant frequencies. (3) Control strategies for synthesis of combinations of vocalic sounds from VT area function parameters. (4) A study of essential cavity structures of fricatives and stops with a discussion of source functions, in part based on data from Fant (1960). (5) Discussion of how source-filter interaction may be implemented and how it affects control strategies in formant synthesis based on underlying vocal tract simulations. [This work has been supported by grants from the Swedish Board of Technical Development and the Swedish Telecom.]