@inproceedings{
ye2024flashspeech,
title={FlashSpeech: Efficient Zero-Shot Speech Synthesis},
author={Zhen Ye and Zeqian Ju and Haohe Liu and Xu Tan and Jianyi Chen and Yiwen Lu and Peiwen Sun and Jiahao Pan and Bianweizhen and Shulin He and Wei Xue and Qifeng Liu and Yike Guo},
booktitle={ACM Multimedia 2024},
year={2024},
url={https://openreview.net/forum?id=Q5C9eNZl1m}
}
Recent progress in large-scale zero-shot speech synthesis has been significantly advanced by language models and diffusion models.  However, the generation process of both methods is slow and computationally intensive. Efficient speech synthesis using a lower computing budget to achieve quality on par with previous work remains a significant challenge. In this paper, we present FlashSpeech, a large-scale zero-shot speech synthesis system with approximately 5\% of the inference time compared with previous work. FlashSpeech is built on the latent consistency model and applies a novel adversarial consistency training approach that can train from scratch without the need for a pre-trained diffusion model as the teacher. Furthermore,  a new prosody generator module enhances the diversity of prosody, making the rhythm of the speech sound more natural.
The generation processes of FlashSpeech can be achieved efficiently with one or two sampling steps while maintaining high audio quality and high similarity to the audio prompt for zero-shot speech generation.
Our experimental results demonstrate the superior performance of FlashSpeech. Notably, FlashSpeech can be about 20 times faster than other zero-shot speech synthesis systems while maintaining comparable performance in terms of voice quality and similarity. Furthermore, FlashSpeech demonstrates its versatility by efficiently performing tasks like voice conversion, speech editing, and diverse speech sampling. Audio samples can be found in  https://flashspeech.github.io
FlashSpeech: Efficient Zero-Shot Speech Synthesis
Zhen Ye Zeqian Ju Haohe Liu Xu Tan Jianyi Chen Yiwen Lu Peiwen Sun Jiahao Pan Bianweizhen Shulin He Wei Xue Qifeng Liu Yike Guo