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About this paper

Jiani Xie, Andrew C. Cullen, Paul Montague, Benjamin I. P. Rubinstein

Semantic Gambit (SG) attacks live speech recognition by using an LLM to predict likely upcoming words from a speech prefix, then conditioning an acoustic perturbation generator on the prediction and prefix audio. On Wav2Vec 2.0 Large and LibriSpeech test-clean, SG reaches 35.63% corpus-level WER versus 15.15% for an acoustic-only ablation at zero delay; average measured pipeline latency is 663 ms.

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