Single-sensor multispeaker listening with acoustic metamaterials.
Designing a "cocktail party listener" that functionally mimics the selective perception of a human auditory system has been pursued over the past decades. By exploiting acoustic metamaterials and compressive sensing, we present here a single-sensor listening device that separates simultaneous overlapping sounds from different sources. The device with a compact array of resonant metamaterials is demonstrated to distinguish three overlapping and independent sources with 96.67% correct audio recognition. Segregation of the audio signals is achieved using physical layer encoding without relying on source characteristics. This hardware approach to multichannel source separation can be applied to robust speech recognition and hearing aids and may be extended to other acoustic imaging and sensing applications.
Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708.
Yangbo
Y
Xie
Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708.
Tsung-Han
TH
Tsai
Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708.
Adam
A
Konneker
Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708.
Bogdan-Ioan
BI
Popa
Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708.
David J
DJ
Brady
Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708 cummer@ee.duke.edu.
Steven A
SA
Cummer
D000162:Acoustics / Q000295:instrumentation*; D000180:Acrylic Resins; D001307:Auditory Perception; D002070:Butadienes; D003198:Computer Simulation; D004867:Equipment Design; D056228:Feedback, Sensory; D006310:Hearing Aids; D006801:Humans; D008420:Manufactured Materials; D008422:Materials Testing; D008962:Models, Theoretical; D010700:Phonetics; D011137:Polystyrenes; D066330:Printing, Three-Dimensional; D012815:Signal Processing, Computer-Assisted; D013017:Sound Localization; D049250:Speech Recognition Software
D000180:Acrylic Resins; D002070:Butadienes; D011137:Polystyrenes; C024636:ABS resin
cocktail party problem; compressive sensing; metamaterials