Acoustic analysis of vowels in five low resource north East Indian languages of Nagaland

2017 20th Conference of the Oriental Chapter of the International Coordinating Committee on Speech Databases and Speech I/O Systems and Assessment (O-COCOSDA) Pub Date : 2017-11-01 DOI:10.1109/ICSDA.2017.8384460

Joyanta Basu, T. Basu, Soma Khan, Madhab Pal, Rajib Roy, M. S. Bepari, Sushmita Nandi, T. Basu, Swanirbhar Majumder, S. Chatterjee

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引用次数: 3

Abstract

This paper describes acoustic analysis of vowels in five different low resource languages of Nagaland namely Nagamese, Ao, Lotha, Sumi and Angami from North-Eastern India. Six major vowels (/u/, /o/, /a/, /a/, /e/, /i/) are studied for these languages to build up the characteristic features of these languages from readout speech. Vowel duration and 1st, 2nd and 3rd formant i.e. F1, F2 and F3 are investigated and analyzed for these languages. Using these vowels' knowledge, a small Language Identification module has been developed and tested with unseen samples of the above said languages. Result shows that instead of considering F1, F2 and vowel duration only, inclusion of F3 markedly improves the performance for identification of Nagaland languages except for Nagamese. This initial study unveils the importance of vowel characteristics. The result of language identification is also encouraging for these low resource languages.

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那加兰邦东北印度五种低资源语言元音的声学分析

本文对那加兰邦五种不同的低资源语言，即印度东北部的那加兰语、奥语、洛塔语、苏米语和安加米语的元音进行了声学分析。研究这些语言的六个主要元音(/u/， /o/， /a/， /a/， /e/， /i/)，从读出语音中建立这些语言的特征。对这些语言的元音时长和第一、第二、第三构音即F1、F2和F3进行了调查和分析。利用这些元音知识，我们开发了一个小型的语言识别模块，并使用上述语言的未见样本进行了测试。结果表明，与只考虑F1、F2和元音时长相比，加入F3显著提高了对那加兰邦语言(除那加兰语外)的识别性能。这项初步研究揭示了元音特征的重要性。对于这些资源匮乏的语言，语言识别的结果也是令人鼓舞的。

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2017 20th Conference of the Oriental Chapter of the International Coordinating Committee on Speech Databases and Speech I/O Systems and Assessment (O-COCOSDA)

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