Study of Fractional Deviation of Resonating Length of Vocal Track for Different Vowels
Abstract
The vocal tract is an acoustical tube, which has been estimated from the resonant properties of a tube. The fractional deviation is the deviation of the actual vocal tract length from the resonating vocal tract length. In this paper, we have studied the estimation of fractional deviation of effective resonating length of the vocal tract for different vowels. First, measure the formant frequency of different vowels of Garhwali (Hindi) and Nepali speakers. The calculated value of the resonating length of the vocal track and the fractional deviation of effective resonating length for different vowels are estimated. The average length of the vocal tract of Nepali and Garhwali (Hindi) male speakers is 17.70 cm and 18.12 cm, and for female speakers, 15.28 cm and 15.02 cm, respectively. The average ratio of the length of the vocal tract of male to female speakers is 1.16 and 1.21 for Nepali and Garhwali (Hindi) speakers. The fractional deviation of central vowels /a/ and /Λ/ have a great value, but fronts (/i/, /I/, /e/, /e/) and back (/Ɔ/, /O/, /U/, /u/) vowels have the lowest values.
Keywords: Vocal tract, Resonating, Front, Central, Back, Vowels, Speakers, Fractional deviation