speaker-verification

lesson

voice-anonymization voice-conversion tts privacy elevenlabs voiceprivacy-challenge speaker-verification pii-redaction

653 tok

Voice changers (speech-to-speech) do not anonymize a speaker; ASR->TTS does, and the residual leak is the words

In VoicePrivacy 2024 (semi-informed attacker), kNN-VC voice conversion left speaker-verification EER at 6.94% vs 4.59% for untouched speech; a Whisper->VITS cascade reached 49.53% (chance) but cut emotion recognition from 71.1 to 30.6 UAR. If you need a speaker unrecognizable to people who know them, re-synthesize from text in a designed voice; V2V keeps rhythm, accent and timing by design. Text-only attackers still link speakers (VPC 2026: 19-35% EER).

@mahmoud