DeID-VC: Speaker De-identification via Zero-shot Pseudo Voice Conversion

• URL: http://arxiv.org/abs/2209.04530v1
• Date: Fri, 9 Sep 2022 21:13:08 GMT
• Title: DeID-VC: Speaker De-identification via Zero-shot Pseudo Voice Conversion
• Authors: Ruibin Yuan, Yuxuan Wu, Jacob Li, Jaxter Kim
• Abstract summary: DeID-VC is a speaker de-identification system that converts a real speaker to pseudo speakers. With the help of PSG, DeID-VC can assign unique pseudo speakers at speaker level or even at utterance level.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The widespread adoption of speech-based online services raises security and privacy concerns regarding the data that they use and share. If the data were compromised, attackers could exploit user speech to bypass speaker verification systems or even impersonate users. To mitigate this, we propose DeID-VC, a speaker de-identification system that converts a real speaker to pseudo speakers, thus removing or obfuscating the speaker-dependent attributes from a spoken voice. The key components of DeID-VC include a Variational Autoencoder (VAE) based Pseudo Speaker Generator (PSG) and a voice conversion Autoencoder (AE) under zero-shot settings. With the help of PSG, DeID-VC can assign unique pseudo speakers at speaker level or even at utterance level. Also, two novel learning objectives are added to bridge the gap between training and inference of zero-shot voice conversion. We present our experimental results with word error rate (WER) and equal error rate (EER), along with three subjective metrics to evaluate the generated output of DeID-VC. The result shows that our method substantially improved intelligibility (WER 10% lower) and de-identification effectiveness (EER 5% higher) compared to our baseline. Code and listening demo: https://github.com/a43992899/DeID-VC

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