The Algorithms of Tajik Speech Synthesis by Syllable

Khujand Polytechnic institute of Tajik technical university named after academician M.S. Osimi, Khujand, 735700, Tajikistan

^* Corresponding author: tajlingvo@gmail.com

Abstract

This article is devoted to the development of a prototype of a computer synthesizer of Tajik speech by the text. The need for such a synthesizer is caused by the fact that its analogues for other languages not only help people with visual and speech defects, but also find more and more application in communication technology, information and reference systems. In the future, such programs will take their proper place in the broad acoustic dialogue of humans with automatic machines and robotics in various fields of human activity. The article describes the prototype of the Tajik computer synthesizer by the text developed by the author, which is constructed on the principle of a concatenative synthesizer, in which the syllable is chosen as the speech unit, which in turn, indicates the need for the most complete description of the variety of Tajik language syllables. To study the patterns of the Tajik language associated with the concept of syllable, it was introduced the concept of “syllabic structure of the word”. It is obtained the statistical distribution of structures, i.e. a correspondence is established between the syllabic structures of words and the frequencies of their occurrence in texts in the Tajik language. It is proposed an algorithm for breaking Tajik words into syllables, implemented as a computer program. A solution to the problem of Tajik speech synthesis from an arbitrary text is proposed. The article describes the computer implementation of the algorithm for syncronization of words, numbers, characters and text. For each syllable the corresponding sound realization is extracted from the “syllable-sound” database, then the sound of the word is synthesized from the extracted elements.