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Preprint Aug 2026

Your Voice Cloning System is Secretly a Voice Anonymizer

Speaker anonymization suppresses speaker-identifying attributes from speech while preserving linguistic content and quality. We propose repurposing XTTSv2, a multilingual voice cloning model trained on 27k hours of speech, for speaker anonymization without retraining. Our key insight is that XTTSv2's voice cloning capa...

Romolo Muletta, Felix Matthias Saaro, Mark Cieliebak et al. · 0 citations
Preprint Aug 2026

The RAT: A Unified Bayesian Model for RAG Evaluation

Evaluating Retrieval-Augmented Generation (RAG) systems requires assessing not only end-to-end correctness but also how individual components interact and how errors propagate through the pipeline. We introduce a Bayesian evaluation framework that jointly models retrieval success, abstention behavior, and answer correc...

Pius von Däniken, Felix Matthias Saaro, Mark Cieliebak et al. · 0 citations

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