LANGUAGE IN INDIA

Strength for Today and Bright Hope for Tomorrow

Volume 14:4 April 2014
ISSN 1930-2940

Managing Editor: M. S. Thirumalai, Ph.D.
Editors: B. Mallikarjun, Ph.D.
         Sam Mohanlal, Ph.D.
         B. A. Sharada, Ph.D.
         A. R. Fatihi, Ph.D.
         Lakhan Gusain, Ph.D.
         Jennifer Marie Bayer, Ph.D.
         S. M. Ravichandran, Ph.D.
         G. Baskaran, Ph.D.
         L. Ramamoorthy, Ph.D.
         C. Subburaman, Ph.D. (Economics)
Assistant Managing Editor: Swarna Thirumalai, M.A.

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Effect of Speaking Rate on Voice Onset Time in Telugu

Madhu Sudarshan Reddy. B. B.Sc., M.Sc. (Speech-Language Pathology)
Mahendra Kumar. N. M.Sc. (Speech-Language Pathology)
Sreedevi. N. M.Sc. (Speech & Hearing), Ph.D. (Speech-Language Pathology)

Introduction

Speech is a system of verbal communication and is distinctive to human beings. Stetson (1928) suggested that “speech is movement made audible”. In simple, audible sounds are produced by effort of vocal folds which is further altered by the articulators (tongue, lips) to generate speech. Acoustics deals with the study of sounds. The analysis of sounds in terms of temporal and spectral aspects is called acoustic analysis. It allows the speech pathologist to infer a great deal about the movement and placement of the articulators during the production of both normal and abnormal speech. Sounds comprise of vowels and consonants.

Vowels and Consonants

Vowels convey maximum energy and helps in understanding speech. Consonants convey less energy but have meaningful message in speech communication. Stops are abundantly represented in the world’s languages and often are frequently occurring consonants in a language. The stop consonants are produced by the complete occlusion of the oral cavity by articulators. Acoustic characteristics of stops include closure duration, voice onset time (VOT), release burst and formant transition. VOT is a strong cue to voicing differences between stops (Lisker & Abramson 1964, 1970). Voice onset time (VOT) is the time between the release of a stop consonant occlusion and the onset of the vocal fold vibration and is measured as the time interval between the release burst and the first quasi periodicity in the acoustic signal (Lisker & Abramson, 1964; Keating, 1984; Klatt, 1975).

This is only the beginning part of the article. PLEASE CLICK HERE TO READ THE ENTIRE ARTICLE IN PRINTER-FRIENDLY VERSION.

MadhuSudarshan Reddy. B. M.Sc. (Speech Language Pathology)
All India Institute of Speech & Hearing
Mysore 570 006
Karnataka
India
Madhusudarshan@rocketmail.com

Mahendra Kumar.N. M.Sc (Speech Language Pathology)
All India Institute of Speech & Hearing
Mysore 570 006
Karnatala
India
mahe15kn@gmail.com

Dr. Sreedevi. N
Reader & Head
Department of Speech Language Sciences
All India Institute of Speech & Hearing
Mysore 570 006
Karnataka
India
srij_01@yahoo.co.in
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