Elastic Constants of Isotropic Cylinders using Resonant Ultrasound

Scott E. Livelv, David Pisoni

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Two experiments were carried out to extend Logan et aVs recent study [J. S. Logan, S. E. Lively, and D. B. Pisoni, J. Acoust. Soc. Am. 89, 874–886 (1991)] on training Japanese listeners to identify English /r/ and /l/. Subjects in experiment 1 were trained in an identification task with multiple talkers who produced English words containing the /r/-/l/ contrast in initial singleton, initial consonant clusters, and intervocalic positions. Moderate, but significant, increases in accuracy and decreases in response latency were observed between pretest and posttest and during training sessions. Subjects also generalized to new words produced by a familiar talker and novel words produced by an unfamiliar talker. In experiment 2, a new group of subjects was trained with tokens from a single talker who produced words containing the /r/-/l/ contrast in five phonetic environments. Although subjects improved during training and showed increases in pretest—posttest performance, they failed to generalize to tokens produced by a new talker. The results of the present experiments suggest that variability plays an important role in perceptual learning and robust category formation. During training, listeners develop talker-specific, context-dependent representations for new phonetic categories by selectively shifting attention toward the contrastive dimensions of the non-native phonetic categories. Phonotactic constraints in the native language, similarity of the new contrast to distinctions in the native language, and the distinctiveness of contrastive cues all appear to mediate category acquisition.

Original languageEnglish (US)
Pages (from-to)1242-1255
Number of pages14
JournalJournal of the Acoustical Society of America
Volume94
Issue number3
DOIs
StatePublished - 1993

Fingerprint

phonetics
education
elastic properties
cues
learning
acquisition
Cylinder
Ultrasound
Talkers
Experiment
Native Language
Listeners
Contrastive

ASJC Scopus subject areas

  • Acoustics and Ultrasonics
  • Arts and Humanities (miscellaneous)

Cite this

Elastic Constants of Isotropic Cylinders using Resonant Ultrasound. / Livelv, Scott E.; Pisoni, David.

In: Journal of the Acoustical Society of America, Vol. 94, No. 3, 1993, p. 1242-1255.

Research output: Contribution to journalArticle

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