PMID: 15376684Sep 21, 2004Paper

Perceptuomotor bias in the imitation of steady-state vowels

The Journal of the Acoustical Society of America
Gautam K Vallabha, Betty Tuller

Abstract

Previous studies suggest that speakers are systematically inaccurate, or biased, when imitating self-produced vowels. The direction of these biases in formant space and their variation may offer clues about the organization of the vowel perceptual space. To examine these patterns, three male speakers were asked to imitate 45 self-produced vowels that were systematically distributed in F1/F2 space. All three speakers showed imitation bias, and the bias magnitudes were significantly larger than those predicted by a model of articulatory noise. Each speaker showed a different pattern of bias directions, but the pattern was unrelated to the locations of prototypical vowels produced by that speaker. However, there were substantial quantitative regularities: (1) The distribution of imitation variability and bias magnitudes were similar for all speakers, (2) the imitation variability was independent of the bias magnitudes, and (3) the imitation variability (a production measure) was commensurate with the formant discrimination limen (a perceptual measure). These results indicate that there is additive Gaussian noise in the imitation process that independently affects each formant and that there are speaker-dependent and potentially no...Continue Reading

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Citations

Apr 29, 2006·The Journal of the Acoustical Society of America·David W Purcell, Kevin G Munhall
Apr 29, 2006·The Journal of the Acoustical Society of America·Jennifer S Pardo
Aug 31, 2006·The Journal of the Acoustical Society of America·David W Purcell, Kevin G Munhall
Mar 3, 2011·The Journal of the Acoustical Society of America·Ewen N MacDonaldKevin G Munhall
Aug 1, 2007·Proceedings of the National Academy of Sciences of the United States of America·Gautam K VallabhaShigeaki Amano
Sep 27, 2016·Cognitive Science·Matthew Lehet, Lori L Holt
Nov 9, 2016·Attention, Perception & Psychophysics·Jennifer S PardoJaclyn Wiener
Apr 13, 2019·Attention, Perception & Psychophysics·Melissa Michaud Baese-Berk
Apr 6, 2019·Journal of Speech, Language, and Hearing Research : JSLHR·Stephanie A BorrieVisar Berisha
Nov 26, 2010·Attention, Perception & Psychophysics·Jennifer S PardoRobert M Krauss

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