Author

Aref Farhadipour

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Preprint Oct 2026

Unified Shared Encoder in Spoof-Aware Speaker Verification with Hybrid Wavelet Prompt Tuning

Spoofing-aware speaker verification (SASV) must confirm who is speaking and that the speech is genuine, but current systems gain one at the expense of the other. Modular cascades are accurate yet run two large self-supervised encoders, whereas end-to-end models are efficient but lose accuracy when a single embedding ha...

Aref Farhadipour, Srikanth R. Madikeri, Teodora Vuković et al. · 0 citations

#machine learning Sep 2026

Controlling Speaking Rate in Autoregressive TTS via Activation Steering

Autoregressive text-to-speech (TTS) systems synthesize natural speech but, once trained, offer little control over speaking rate. We show that speaking rate can be steered at inference time, without retraining, by clamping a single decoder block's activation along a discovered speed axis. A decoder-block analysis recov...

Francesco Verdini, Antonis Asonitis, Aref Farhadipour et al. · arXiv.org · 0 citations

#machine learning Preprint Jul 2026

The Limits of Reference-Free Speech Quality Metrics as Evaluators and Rewards on Modern Text-to-Speech

This work evaluates six human-rated corpora spanning the quality range from artifact-rich to defect-free TTS, evaluating each predictor on a pairwise task that asks whether the clip it scores higher is the clip listeners prefer, and subjects interpretable prosodic and signal-processing features to the same protocol.

Antonis Asonitis, Juan Pablo Zuluaga Gomez, Francesco Verdini et al. · 2 citations