Abstract
Apart from other factors, fundamental frequency and intensity of voice have been considered to be affecting the vowel duration. However, studies regarding these relationships are scanty. The present study was conducted to note the durations of /i/ and /u/ in a VCV syllable /idu /.10 male and 10 female adults were asked to read these 3 sentences at normal pitch and also at two other pitch levels (higher and lower than normal pitch) keeping the loudness constant. The durations of /i/ and /u/ were measured using the High Resolution Signal Analyzer in all the 3 sentences under all 3 conditions. It was found that the duration was significantly low at normal pitch than at other levels. Further, durations of these vowels in the utterances of these 3 sentences by cases with voice disorders (pitch disorders) were measured. It was found that the durations were signifi- cantly longer in these cases when compared with the normals.
References
216-221, 1949.
Coker, C. H., Umeda, N. and Brownman, C. P., "Automatic Synthesis from Text," IEEE Trans- Audio Electroicoust., U-21, 293-297, 1973.
Cooper, M., " Spectrographic analysis of fundamental frequency and hoarseness before and after vocal rehabilitation,'' JSHD, 39, 286, 1974.
Fairbanks, P., An Acoustic theory of Speech Pronunciation, The Hauge, Mouton, I960.
Goldman-Eisler, F., Psycholinguistics: Experiments in Spontnaeous Speech, Academic, New York, 1968.
Harrard, M., "Abbreviation of consonants in English pre post vocalic clusters " J. Phonetics
19-24,1973,
House, A. S. and Fairbanks, G., "The influence of consonantal environment upon the secondar- acoustical characteristics of vowels,'' JASA, 25, 105-113, 1953.
Huggins, A. W. F., "Distortion of the temporal pattern of speech: Interruption and alter- nation," JASA, 36, 1055-1064, 1964.
Klatt, D. H., "Interaction between two factors that influence vowel duration."' JASA, 54
1102-1104, 1973. '
Klatt, D. H., "Vowel lengthening is syntactically determined in a connected discourse," J. Phonetics, 3, 129-140, 1975.
Klatt, D. H., Linguistic uses of segmental duration in English : Acoustic and perceptual evidence,"JASA, 59, 1208-1221, 1976.
Lehiste, 1., "Interaction between test word duration and length of utterance,'' Working paper in Linguistics, 17, Ohtio State University, pp 160-169 (unpublished), 1974.
Lehiste, I., " Some factors affecting the duration of syllabic nuclei in English," Proceedings of the First Salzburg Conference on Linguistics- edited by G. Drachman, Verlag Gunter Narr, pp. 81-104, 1975.
Lindbloon, L. et al., "Duration patterns of Swedish phonology : Do they rolled short term memory processes," Manuscript, University of Stockholm, Sweden Journal of Phonetics,
1976.
Lyberg, B., "Some observation on the vowel durat ion of the fundamental frequency contour in Swedish utterances, " Journal of Phonetics 9, 26! 272, 1981.
Martin, J. G., " On judging pauses in spontaneous speech, " J. Verb- Learning Ver. Behaviour,
9, 75-78, 1970'
Nataraja, N. P. and Jayaram, M., " A new approach to the classification of voice disorders,"
JAIISH, 13, 21-28, 1982.
Nooteboom, S. G., " The phonetic feature of vowel length in Dutch, " Language and Speech' -15, 301-306, 1972.
Oiler, D. K., "The effect of position in utterance on speech segment duration in English,'
JASA, 54, 1235-1247, 1973.
O'Shughnessy, " Study of French vowel and consonant duration," /. Phonetics. 9, 3X5-406, 1981. Peterson, G. E. and Bonney, H. L., " Control method used on study of the vowels, " JASA,
24, 175, 1952.
Premanter and Treveno, "Relative durations of stressed vowels," American Speech, 10,
123-133, 1936.
Sweetings, P. M., " VOT and vowel duration in a normal aged population, ' Dissertation
Abstract International, 40, 101, 1980. Wang, Personal Communication, 1981
Williams, C. and Stevens, K. N., " Emotions and speech : some acoustical correlates., " JASA,
52, 1238-1250, 1972.