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 overla...

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Bibliographic Details
Published in:Proceedings of the National Academy of Sciences - PNAS 2015-08, Vol.112 (34), p.10595-10598
Main Authors: Xie, Yangbo, Tsai, Tsung-Han, Konneker, Adam, Popa, Bogdan-Ioan, Brady, David J., Cummer, Steven A.
Format: Article
Language:English
Subjects:
Acoustics - instrumentation
Acrylic Resins
Auditory Perception
Butadienes
Computer Simulation
Ears & hearing
Equipment Design
Feedback, Sensory
Hearing Aids
Humans
Listening
Manufactured Materials
Materials Testing
Models, Theoretical
Phonetics
Physical Sciences
Polystyrenes
Printing, Three-Dimensional
Sensors
Signal Processing, Computer-Assisted
Sound Localization
Speech Recognition Software
Voice recognition
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Summary: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 applicatio.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.1502276112