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.
A 16 kb/s wideband celp- based speech coder using mel-generalized cepstral anal- ysis.IEICE transactions on information and systems, 83(4):876–883, 2000
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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.