A Voice Disguise Communication System Based on Real-Time Voice Conversion

A Voice disguise communication (VDC) system is a system that disguises the voice in transmission and restores it at the receiving end. VDC systems have great application prospects in the field of confidential communication. The use of voice conversion (VC) can enhance the quality of voice disguise and reduce the recognition rate of eavesdroppers or automatic speaker verification (ASV) systems as a way to hide the identity of the speaker. There are three main constraints in applying VC to voice disguise at present: first, the real-time VC is poor and cannot meet the needs of real-time communication; second, the quality of voice disguise is not high, which is easily recognized by eavesdroppers or ASV systems; third, the corpus used for training is large, which poses certain difficulties and costs for implementation. Based on the above problems this research proposed a real-time VC method trained by a small corpus, and used it to design and implement a VDC system, and verified the effectiveness through experiments.