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

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 /ɔ, 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.