Probing the independence of formant control using altered auditory feedback

Publication: Research - peer-reviewJournal article – Annual report year: 2011

Without internal affiliation

  • Author: MacDonald, Ewen

    Unknown

  • Author: Purcell, David W.

    University of Western Ontario, School of Communication Sciences and Disorders

  • Author: Munhall, Kevin G.

    Queen's University, Department of Psychology

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Two auditory feedback perturbation experiments were conducted to examine the nature of control of the first two formants in vowels. In the first experiment, talkers heard their auditory feedback with either F1 or F2 shifted in frequency. Talkers altered production of the perturbed formant by changing its frequency in the opposite direction to the perturbation but did not produce a correlated alteration of the unperturbed formant. Thus, the motor control system is capable of fine-grained independent control of F1 and F2. In the second experiment, a large meta-analysis was conducted on data from talkers who received feedback where both F1 and F2 had been perturbed. A moderate correlation was found between individual compensations in F1 and F2 suggesting that the control of F1 and F2 is processed in a common manner at some level. While a wide range of individual compensation magnitudes were observed, no significant correlations were found between individuals' compensations and vowel space differences. Similarly, no significant correlations were found between individuals' compensations and variability in normal vowel production. Further, when receiving normal auditory feedback, most of the population exhibited no significant correlation between the natural variation in production of F1 and F2. © 2011 Acoustical Society of America.
Keyword: Hearing,Speech
Original languageEnglish
JournalJournal of the Acoustical Society of America
Publication date2011
Volume129
Issue2
Pages955-965
ISSN00014966
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 6
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