Analysis of Formant Frequencies and Vowel Articulation in the Spoken Standard Nigerian English of Undergraduate Students

Abstract

The study compares the first two formants' frequencies in the speech of male and female undergraduate speakers of Standard Nigerian English at the University of Lagos (UNILAG). The study examined eight monophthongs produced in the CVC context (hVd) by 40 males and 40 females, and analysed the vowel quality and phonetic vowel space used by the two gender groups using the Linear Predictive Coding and spectrogram techniques. The findings reveal that there are differences in vowel realisation and quality between male and female speakers, which affect their accents. Specifically, the male undergraduates exhibit compression in the phonetic vowel space while their female counterparts show expansion. This study contributes to the understanding of the vowel space in the speech of male and female speakers, and how these differences may influence speech accent.