Vowel Classification and Vowel Space in Persian

Abstract

Abstract-This article aims to develop an acoustic vowel space in Persian speech. There are several aspects in this survey which make it different from what has been done before. The first is related to the issue of speech material. The need for more natural choice in voice qualities in recent years exhort us not relying on citation form or artificial sound produced in laboratories. Furthermore, the formant frequencies were not extracted from specified vowels, in specified context. In contrast, we are interested in the shape of vowel space determined by extremely large collections of vowel tokens, with whatever distribution of categories and context they may have in the read text. Thirdly, the vowels selected in the database for calculation of the area of vowel space are being stratified for locating in stressed or unstressed syllables, or being uttered by male or female speakers. So, we are simultaneously dealing with four groups. But the most important aspect is related to the methodology used for better plotting of vowels. Either F 1 *F 2 or F 1 *F 2 -F 1 is leaded to better vowel classification is a matter being evaluated by two parameters: (a) linear discriminant analysis and (b) scatter reduction.

A sociophonetic analysis of Farsi vowel systems among heritage speakers and immigrants of Persian ethnicity in Oklahoma

“…Several studies have focused on the acoustic features of vowels -first and second formants -in Farsi (Ansarin 2004;Aronow et al 2017;Esfandiari et al 2015;Ghaffarvand Mokari et al 2017;Mohammadi et al 2011). Ghaffarvand Mokari et al (2017) reported the F0, F1, F2, and F3 and the duration of the Farsi vowels of 28 male and 25 female Farsi monolinguals with Tehrani dialect.…”

A pilot acoustic study of Modern Persian vowels in colloquial speech

“…Studies that did incorporate acoustic measurements used formal readings of literary prose (Samareh 1977), self-recordings of formal speech (Toosarvandani 2004), or measurements from a database of recordings (FarsDat) uncontrolled for dialect, age, or socioeconomic status (Gharavian 2000). In two purely acoustic studies that measured only formant values and not duration, Esfandiari et al (2015) rely on news broadcast recordings, while Ansarin (2004) recorded only six words as pronounced by female speakers.…”