Variation of Fundamental Frequency of Nepali Vowels with Voiced Consonant in /VC/ Syllables

Abstract

Fundamental frequency is an acoustic property of sound which measures the number of complete vibrations. This paper investigates the measurement of variation of fundamental frequency of Nepali vowels word in /VC/ syllables which is followed by voiced consonants sound as spoken three times by ten males and ten female Nepali speakers at age between 15 to 20 years old. Praat software was used to digitize and analyze the recorded data. The fundamental frequency for aspirated and unaspirated voiced sounds was calculated and it is found that variation of fundamental frequency in male speaker in aspirated of voiced (Avg. 212.65 Hz, SD = 8.68) is lower than in un-aspirated voiced (Avg. 226.80 Hz, SD = 7.61) with ratio (Avg. 0.94). Similarly, the average variation of fundamental frequency of female speaker in aspirated of voiced (Avg. 251.73 Hz, SD = 7.32) is lower than in unaspirated of voiced (Avg. 267.72 Hz, SD = 7.87) with ratio (Avg. 0.94). From these data, it was also found that the average fundamental frequency of male speaker is lower than female speakers in aspirated and unaspirated of voiced consonants. The measurement of fundamental frequency of vowels with voiced consonants is very important as it helps to identify the vowels of different languages as it gives the phonetic identity of vowel software made by the speech identification techniques are used in different fields of sound.