Tibetan speech synthesis based on an improved neural network

¹ College of Computer Science and Technology, Qinghai Normal University, Qinghai Xining 810016, China
² School of Computer Science and Technology, Southwest Minzu University, Sichuan Chengdu 610041, China
³ Tibetan Information Processing and Machine Translation Key Laboratory of Qinghai Province, Qinghai Xining 810008, China
⁴ Key Laboratory of Tibetan Information Processing, Ministry of Education, Qinghai Xining 810008, China

^* Corresponding author: 2498775654@qq.com

Abstract

Nowadays, Tibetan speech synthesis based on neural network has become the mainstream synthesis method. Among them, the griffin-lim vocoder is widely used in Tibetan speech synthesis because of its relatively simple synthesis.Aiming at the problem of low fidelity of griffin-lim vocoder, this paper uses WaveNet vocoder instead of griffin-lim for Tibetan speech synthesis.This paper first uses convolution operation and attention mechanism to extract sequence features.And then uses linear projection and feature amplification module to predict mel spectrogram.Finally, use WaveNet vocoder to synthesize speech waveform. Experimental data shows that our model has a better performance in Tibetan speech synthesis.