Adaptive computation of articulatory parameters from the speech signal

S. E. Levinson, C. E. Schmidt

Research output: Contribution to journalArticlepeer-review


An unconstrained optimization technique is used to find the values of parameters, of a combination of an articulatory and a vocal tract model, that minimize the difference between model spectra and natural speech spectra. The articulatory model is anatomically realistic and the vocal tract model is a “lossy” Webster equation for which a method of solution is given. For English vowels in the steady state, anatomically reasonable articulatory configurations whose corresponding spectra match those of human speech to within 2 dB have been computed in fewer than ten iterations. Results are also given which demonstrate a limited ability of the system to track the articulatory dynamics of voiced speech.

Original languageEnglish (US)
Pages (from-to)1145-1154
Number of pages10
JournalJournal of the Acoustical Society of America
Issue number4
StatePublished - Oct 1983
Externally publishedYes

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics


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