The invention discloses a voice
conversion method, device and equipment and a computer readable storage medium, based on a conditional VAE framework, tone information and content information of voice are extracted by using an
encoder, then the voice is synthesized through a generator, and meanwhile, in order to decouple the voice into the content information and the tone information, the voice is converted into the content information and the tone information. A pre-trained self-supervised speech representation learning model is introduced to improve the content decoupling capability, a
feature vector xssl which is output by the self-supervised speech representation learning model and contains source content information C is used as decoupling of conditional constraint content information C through a
stream model, the forward and reverse characteristics of the
stream model are utilized, two KL
divergence criteria are used for guiding
model parameter continuation, and the self-supervised speech representation learning model is obtained. According to the method and the device, the content information is ensured to be lossless, the tone information is modeled as standard normal distribution, the problem of tone leakage is reduced, the decoupling capability of the content information is improved, and the technical problem of tone leakage is solved.