Stop place coding: an acoustic study of CV, VC#, and C#V sequences.
This study investigated stop + vowel coarticulation as a coding mechanism for differentiation of stop place categories in an F2-defined stimulus space. Locus equations (LEs) were used to index the extent of coarticulation in three contexts: (1) onset stop + vowel utterances [.CV]; (2) within-syllable vowel + coda stop utterances [VC#], and (3) across-syllable/word coda stop + vowel utterances [C#V]. Five speakers of American English and 2 speakers of Persian produced [CV1.CV2] (English and Persian), [tV1C#V2t] (English) and [dV1C#V2t] (Persian) tokens with voiced labial, alveolar/dental, and velar stops surrounded by a variety of vowels. In the across-syllable/word boundary condition [C#V2] the extent of anticipatory coarticulation was much reduced relative to traditionally measured onset [CV2] syllables. LE slopes derived across the syllable/word boundary, however, still differed between stop places in the same order as onset CVs. LE slopes derived from within-syllable [V1C#] sequences, however, did not differ between stop places.
Modarresi
Golnaz
G
University of Texas, Austin, Tex. 78712, USA.
Sussman
Harvey
H
Lindblom
Bjorn
B
Burlingame
Elizabeth
E
D000162:Acoustics; D000328:Adult; D005583:Fourier Analysis; D006801:Humans; D008297:Male; D010700:Phonetics; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation; D013018:Sound Spectrography; D013060:Speech / Q000502:physiology*; D013061:Speech Acoustics; D013068:Speech Production Measurement; D013637:Tape Recording / Q000295:instrumentation