EchoMask employs reconfigurable acoustic metamaterials to generate physical-layer frequency-selective interference that raises voiceprint miss-match rates above 90% across tested microphones while preserving speech intelligibility.
Mitigating inaudible ultrasound attacks on voice assistants with acoustic metamaterials.IEEE Access, 11:36464–36470, 2023
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Before the Mic: Physical-Layer Voiceprint Anonymization with Acoustic Metamaterials
EchoMask employs reconfigurable acoustic metamaterials to generate physical-layer frequency-selective interference that raises voiceprint miss-match rates above 90% across tested microphones while preserving speech intelligibility.