Compensation following real-time manipulation of formants in isolated vowels

Auditory feedback influences human speech production, as demonstrated by studies using rapid pitch and loudness changes. Feedback has also been investigated using the gradual manipulation of formants in adaptation studies with whispered speech. In the work reported here, the first formant of steady-...

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Bibliographic Details
Published inThe Journal of the Acoustical Society of America Vol. 119; no. 4; p. 2288
Main Authors Purcell, David W, Munhall, Kevin G
Format Journal Article
LanguageEnglish
Published United States 01.04.2006
Subjects
Adolescent
Adult
Attention
Feedback
Female
Habituation, Psychophysiologic
Humans
Loudness Perception
Male
Phonetics
Pitch Discrimination
Reference Values
Signal Processing, Computer-Assisted
Sound Spectrography
Speech Acoustics
Speech Perception
Speech Production Measurement
Verbal Behavior
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Summary:Auditory feedback influences human speech production, as demonstrated by studies using rapid pitch and loudness changes. Feedback has also been investigated using the gradual manipulation of formants in adaptation studies with whispered speech. In the work reported here, the first formant of steady-state isolated vowels was unexpectedly altered within trials for voiced speech. This was achieved using a real-time formant tracking and filtering system developed for this purpose. The first formant of vowel /epsilon/ was manipulated 100% toward either /ae/ or /I/, and participants responded by altering their production with average Fl compensation as large as 16.3% and 10.6% of the applied formant shift, respectively. Compensation was estimated to begin <460 ms after stimulus onset. The rapid formant compensations found here suggest that auditory feedback control is similar for both F0 and formants.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.2173514