HLTCOE Submission to the VoicePrivacy Attacker Challenge
Henry Li Xinyuan, Ashi Garg, Zexin Cai, Kevin Duh, Leibny Paola Garcia, Sanjeev P. Khudanpur, Nicholas Andrews, Matthew Wiesner · 2025
We describe our submission to the 2024 VoicePrivacy Attacker Challenge. We propose three main categories of methods to improve ASV performance against anonymized speech: improvements to the underlying classifier, alternative distance metrics when computing ASV scores, and kNN-VC normalization. By simultaneously employing one or more of these methods, we were able to achieve a significant reduction in EER against all of the submitted anonymization systems in the VoicePrivacy Challenge.