UNIQUE : Unsupervised Network for Integrated Speech Quality Evaluation

International Conference
2024-06-13 11:17
Authors : Juhwan Yoon, Woo Seok Ko, Seyun Um, Sungwoong Hwang, Soojoong Hwang, Changhwan Kim, Hong-Goo Kang

Year : 2024

Publisher / Conference : INTERSPEECH

Research area : Speech Signal Processing, Text-to-Speech, Speech Synthesis, Etc

Presentation : Poster

The significance of an objective metric for evaluating synthetic speech lies in its ability to provide a quantitative measure for systematic assessment of speech quality. However, previous works have focused on predicting subjective quality scores in a supervised manner, requiring a large amount of paired data comprising speech and perceived quality scores. In this work, we introduce a novel metric, the UNIQUE score, that integrates the concept of anomaly detection to systematically evaluate input speech in an unsupervised manner. By leveraging speech features from a self-supervised model, the system can learn a sophisticated speech distribution that enables it to detect differences between real and synthesized speech. By comparing the UNIQUE score of synthetic speech across various text-to-speech models and datasets with other objective measures, we demonstrate that our metric provides an effective evaluation of speech quality that shows a higher correlation with human perceptions.
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