Formant-Frequency Differences Between Isolated Whispered and Phonated Vowel Samples Produced by Adult Female Subjects This study was designed to investigate the formant frequencies of phonated and whispered productions of five test vowels (/i/,/u/, /æ/, /Δ/, and //). Each test vowel was sustained twice in isolation—once phonated, once whispered—by 20 adult female subjects. The phoneme represented by each recorded production was identified independently by 11 ... Research Article
Research Article  |   June 01, 1984
Formant-Frequency Differences Between Isolated Whispered and Phonated Vowel Samples Produced by Adult Female Subjects
 
Author Affiliations & Notes
  • Ken J. Kallail
    Kansas State University, Manhattan
  • Floyd W. Emanuel
    University of Oklahoma Health Sciences Center, Keys Speech and Hearing Center, Oklahoma City
Article Information
Research Articles
Research Article   |   June 01, 1984
Formant-Frequency Differences Between Isolated Whispered and Phonated Vowel Samples Produced by Adult Female Subjects
Journal of Speech, Language, and Hearing Research, June 1984, Vol. 27, 245-251. doi:10.1044/jshr.2702.251
History: Received July 21, 1982 , Accepted November 15, 1983
 
Journal of Speech, Language, and Hearing Research, June 1984, Vol. 27, 245-251. doi:10.1044/jshr.2702.251
History: Received July 21, 1982; Accepted November 15, 1983

This study was designed to investigate the formant frequencies of phonated and whispered productions of five test vowels (/i/,/u/, /æ/, /Δ/, and //). Each test vowel was sustained twice in isolation—once phonated, once whispered—by 20 adult female subjects. The phoneme represented by each recorded production was identified independently by 11 listeners. Only those samples identified by 6 or more of the listeners as the vowel intended were retained for a further (acoustic) analysis. An acoustic spectrum of each retained sample was obtained to permit formant measurements. To provide the clearest formant delineation possible in our lab, the phonated samples were analyzed by broadband spectrography and the whispered samples by very narrowband spectrography. This report presents the formant frequencies (FI-F3) of the test productions as measured from the acoustic vowel spectra and the formant-freqneney differences between the pbonated and whispered productions. In general, the results showed a trend for whispered vowel formants to be higher in frequency than phonated vowel formants, but that trend was only strongly evident for F1.

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