Unit-selection diphone synthesis from limited unrelated speech can produce Alexa commands that are recognized with 93.8% accuracy and often receive the highest speaker-similarity confidence, but the headline 30-second success numbers rely on a simulated partial-coverage model with post-hoc donor…
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Evaluating Synthetic Command Attacks on Smart Voice Assistants
Unit-selection diphone synthesis from limited unrelated speech can produce Alexa commands that are recognized with 93.8% accuracy and often receive the highest speaker-similarity confidence, but the headline 30-second success numbers rely on a simulated partial-coverage model with post-hoc donor…