WINVC : one-shot voice conversion with weight adaptive instance normalization

This paper proposes a one-shot voice conversion (VC) solution. In many one-shot voice conversion solutions (e.g., Auto-encoder-based VC methods), performances have dramatically been improved due to instance normalization and adaptive instance normalization. However, one-shot voice conversion fluency is still lacking, and the similarity is not good enough. This paper introduces the weight adaptive instance normalization strategy to improve the naturalness and similarity of one-shot voice conversion. Experimental results prove that under the VCTK data set, the MOS score of our proposed model, weight adaptive instance normalization voice conversion (WINVC), reaches 3.97 with five scales, and the SMOS reaches 3.31 with four scales. Besides, WINVC can achieve a MOS score of 3.44 and a SMOS score of 3.11 respectively for one-shot voice conversion under a small data set of 80 speakers with 5 pieces of utterances per person.