LANGUAGE IN INDIA

Strength for Today and Bright Hope for Tomorrow

Volume 16:3 March 2016
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.
         G. Baskaran, Ph.D.
         L. Ramamoorthy, Ph.D.
         C. Subburaman, Ph.D. (Economics)
         N. Nadaraja Pillai, Ph.D.
         Renuga Devi, Ph.D.
         Soibam Rebika Devi, M.Sc., Ph.D.
Assistant Managing Editor: Swarna Thirumalai, M.A.

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Voice Onset Time and Burst Duration of
Bangla Labial Stop Consonant in
Consonant-Vowel (CV) Context

Arundhati Sengupta, M.A.

Abstract

Consonant-Vowel (CV) construction is the most frequent syllable in Bangla. The present study examine the acoustic properties of Bangla four labial stop consonants [p, ph, b and bh] in the initial position in a consonant-vowel context with seven following vowels /?, a, e, æ, i, u, o/. Bangla is a type of language that uses aspiration as an addition feature to distinguish phoneme. Bangla labial stops are investigated to provide acoustic information. Acoustic parameters, voice onset time (VOT) and burst duration (BD), are measured from wave form and spectrogram of CV syllable. The study shows that the VOT duration for all consonant has its lowest absolute value when followed by /a/. In case of voiced consonants a high negative VOT (ms) is shown when the stop consonant is followed by vowel /e/. There is no significant difference between median burst duration of aspirated and unaspirated stop.

Keywords: Bangla labial stops, voice onset time and burst duration, acoustic study.

Introduction

In speech recognition, one of the most difficult task is the acoustic study of consonant due to the speaker dependent nature and different context of the stops. Stop consonants are generally produced by the complex movement in the vocal track with the nasal cavity closed and the rapid closure and opening is affected by the oral cavity.

In 1979 and 1986 Sarkar [1, 2], established 16 canonical syllable patterns in Bangla, which are as follows: CV, CVC, V, VC, VV, CVV, CCV, CCVC, CVVC, CCVV, CCVVC, CVCC, CCCV, CCCVC, VVC, and CCCVV. Among these 16 patterns, CV has the maximum number of frequency, approximately 54% in the language [3]. Thus, the study of Bengali stop consonant is important in order to understand their time and frequency domain characteristics.

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

Arundhati Sengupta
Flat-H, Titas Apartment
24/13 I. C. Road
Rahara
Kolkata-700118
West Bengal,
India
arundhati.sengupta81@gmail.com
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