Abstract
Rhythm is a systematic temporal and accentual patterning of sound. Speech rhythm refers to the way languages are organized in time. The present study investigated the differences in the type of speech rhythm, in typically developing, Kannada speaking children in the age groups of 3-4 years, 8-9 years, and 11-12 years. Sixty children (10 girls and 10 boys in each of the three age groups) participated in the study. A five-minute speech sample was elicited using simple pictures/cartoons developed by Nagapoornima (1990) in 3-4 year old children; for children in the older age groups, pictures depicting simple stories developed by Rajendra Swamy (1991) adapted from Panchatantra were used. These speech samples were analyzed using PRAAT 5.1.14 software. Vocalic (V) and Intervocalic (IV) durations were measured. The durational difference between successive vocalic and intervocalic segments were calculated and averaged to get Pair wise Variability Index. Comparison of PVIs of the above age groups with Kannada speaking adults indicated that 3-4 year old children had syllabletimed rhythm pattern; 8-9 year and 11-12 year old children was mora-timed rhythm. Intervocalic PVI reduced from younger to older age group whereas vocalic PVI showed no such trend. Results obtained are discussed with reference to the rhythm types in each age group and establishing a continuum in development of speech rhythm.
References
Phonetics. Chicago: Aldine Pub. Co.
Boersma & Weenik. (2009). PRAAT 5.1.14 software.
Retrieved from http://www.goofull.com/au/
programa/14235/speedyitunes.html.
Cutler, A. (1991). Linguistic rhythm and speech
segmentation. In Sundeberg, J., Nord, L. &
Carlson, R. (Eds.). Music, Language Speech and
Brain. (wenner-Gren Symposium Series 59).
Macmillan: Houndsmills & London, 157-166.
Grabe, E., & Low, E. L. (2002). Durational variability
in speech and the rhythm class hypothesis. In C.
Gussenhoven, & N. Warner (2006) (Eds.).
Laboratory Phonology, 7, 515-546. Berlin:
Mouton de Gruyter.
Low, E. L. (1998). Prosodic Prominence in Singapore
English. Unpublished Ph.D. Thesis, University of
Cambridge.
Low, E. L., Grabe, E. & Nolan, F. (2000). Quantitative
Characterizations of Speech Rhythm– „Syllable
timing‟ in Singapore English. Language and
Speech, 43, 377 – 401.
Nagapoornima, M. N. (1990). Dysfluencies in
children: 3-4 years. M. Jayaram, & S.R. Savithri
(Eds.). Dissertation abstract: Research at AIISH,
Vol.2, pp 171-173.
Pike, K. L. (1945). The intonation of American
English.Ann Arbor: The University of Michigan
Press.
Rajendra Swamy, (1992). Some aspects of fluency in
children: 6-7 years. M. Jayaram, & S.R. Savithri
(Eds.). Dissertation abstract: Research at AIISH,
Vol.3, pp 6-7.
Ramus, F., Nespor, M. & Mehler, J. (1999). Correlates
of Linguistic Rhythm in the Speech Signal.
Cognition, 72, 1 – 28.
Roach, P. (1982). On the distinction between „Stresstimed‟
and „Syllable-timed‟ languages. In D.
Crystal (1986) Eds., Linguistic Controversies (pp.
73-79). London: Arnold.
Savithri, S. R., Jayaram, M., Kedarnath, D. &
Goswami, S. (2006). Speech rhythm in Indo
Aryan and Dravidian languages. Proceedings of
the International Symposium on Frontiers of
Research on speech and music, 31-35.
Savithri, S. R., Johnsirani, R. & Ruchi, A. (2008).
Speech Rhythm in Hearing-Impaired
Children. AIISH Research Fund Project.
Savithri, S.R., Sreedevi, N., Aparna.V.S., Deepa
Anand. (2011). Speech rhythm in 11-12 year old
Kannada speaking children. Proceedings of
International Symposium on Frontiers of
Research in Speech and Music & Computer
Music Modelling and Retrieval,
FRSM/CMMR-2011, 56-59.
Savithri, S.R., Sreedevi, N., Deepa Anand.,
Aparna.V.S. (2011). Effect of gender on speech
rhythm in 3-4 year old Kannada speaking
children. Proceedings of International
Symposium on Frontiers of Research in Speech
and Music & Computer Music Modelling and
Retrieval, FRSM/CMMR-2011, 31-35.