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Journal of Speech and Hearing Research Vol.35 88-95 February 1992.
© American Speech-Language-Hearing Association
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Acoustic Integrity of Speech Production in Children With Moderate and Severe Hearing Impairment

John Ryalls 1
Annie Larouche 1
1 Ecole d'orthophonie et d'audiologie Université de Montréal, Québec

Ten normally hearing and 10 age-matched subjects with moderate-to-severe hearing impairment were recorded producing a protocol of 18 basic syllables [/pi/,/pa/,/pu/; /bi/,/ba/,/bu/; /ti/,/ta/,/tu/; /di/,/da/,/du/; /ki/,/ka/,/ku/; /gi/,/ga/,/gu/] repeated five times. The resulting 90 syllables were digitized and measured for (a) total duration; (b) voice-onset time (VOT) of the initial consonant; (c) fundamental frequency (F0) at midpoint of vowel; and (d) formant frequencies (F1, F2, F3), also measured at midpoint of vowel. Statistical comparisons were conducted on (a) average values for each syllable, and (b) standard deviations. Although there were numerical differences between normally hearing and hearing-impaired groups, few differences were statistically significant.

KEY WORDS: acoustic analyses, hearing-impaired speech, VOT, formants, F0, duration

Submitted on May 7, 1990
Accepted on April 19, 1991


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