Evaluating models of vowel perception

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

There is a long-standing debate concerning the efficacy of formant-based versus whole spectrum models of vowel perception. Categorization data for a set of synthetic steady-state vowels were used to evaluate both types of models. The models tested included various combinations of formant frequencies and amplitudes, principal components derived from excitation patterns, and perceptually scaled LPC cepstral coefficients. The stimuli were 54 five-formant synthesized vowels that had a common F1 frequency and varied orthogonally in F2 and F3 frequency. Twelve speakers of American English categorized the stimuli as the vowels /I/, /υ/, or /latin small letter reversed open e with hook sign/. Results indicate that formant frequencies provided the best account of the data only if nonlinear terms, in the form of squares and cross products of the formant values, were also included in the analysis. The excitation pattern principal components also produced reasonably accurate fits to the data. Although a wish to use the lowest-dimensional representation would dictate that formant frequencies are the most appropriate vowel description, the relative success of richer, more flexible, and more neurophysiologically plausible whole spectrum representations suggests that they may be preferred for understanding human vowel perception.

Original languageEnglish (US)
Pages (from-to)1062-1071
Number of pages10
JournalJournal of the Acoustical Society of America
Volume118
Issue number2
DOIs
StatePublished - Aug 2005
Externally publishedYes

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vowels
stimuli
hooks
excitation
Formants
Vowel Perception
Formant Frequencies
Stimulus
Principal Components
coefficients
products

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this

Evaluating models of vowel perception. / Molis, Michelle.

In: Journal of the Acoustical Society of America, Vol. 118, No. 2, 08.2005, p. 1062-1071.

Research output: Contribution to journalArticle

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