Volume 8, Issue 2, June 2020, Page: 24-30
Developing Concatenative Based Text to Speech Synthesizer for Tigrigna Language
Mezgebe Araya Keletay, Department of Computer Science, School of Computing and Informatics, Mizan-Tepi University, Tepi, Ethiopia
Hussien Seid Worku, Department of Computer Science, College of Engineering and Technology, Arba-Minch Institute of Technology, Arba-Minch, Ethiopia
Received: Feb. 24, 2020;       Accepted: Mar. 10, 2020;       Published: Oct. 27, 2020
DOI: 10.11648/j.iotcc.20200802.12      View  42      Downloads  8
Abstract
A Text-To-Speech (TTS) synthesizer is a computer-based system able to read any text and convert it into speech that resembles as closely as possible a native speaker of the language. This thesis describes the first Text-to-Speech (TTS) system for the Tigrigna language, using speech synthesis architecture in MATLAB. The TTS system is working based on concatenative synthesis and applying LPC technique. The performance of the system is measured and the quality of synthesized speech is assessed in terms of intelligibility and naturalness. The result of the synthesizer is evaluated in two ways, in word level and sentences level. The test results indicate in the word level is evaluated by NeoSpeech tool online and most of the words are recognizable. The overall performance of the system in the word level which is evaluated by NeoSpeech tool is found to be 78%. When it comes to the intelligibility and naturalness of the synthesized speech in the sentence level, it is measured in MOS scale and the overall intelligibility and naturalness of the system is found to be 3.28 and 3.27 respectively. The values of performance, intelligibility and naturalness are encouraging and show that diphone speech units are good candidates to develop fully functional speech synthesizer. But there are areas that can be improved. Inclusion of text analyzer to pronounce zonal dialects of the language and prosody generator are some of the things that need further investigation.
Keywords
Concatenative Approach, Speech Synthesis, Tigrigna Syllables, Text-to-Speech
To cite this article
Mezgebe Araya Keletay, Hussien Seid Worku, Developing Concatenative Based Text to Speech Synthesizer for Tigrigna Language, Internet of Things and Cloud Computing. Vol. 8, No. 2, 2020, pp. 24-30. doi: 10.11648/j.iotcc.20200802.12
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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