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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Published inProceedings of the National Academy of Sciences - PNAS Vol. 112; no. 34; pp. 10595 - 10598
Main Authors Xie, Yangbo, Tsai, Tsung-Han, Konneker, Adam, Popa, Bogdan-Ioan, Brady, David J., Cummer, Steven A.
Format Journal Article
LanguageEnglish
Published United States National Academy of Sciences 25.08.2015
National Acad Sciences
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
cocktail party problem
metamaterials
compressive sensing
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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.
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Edited by Ping Sheng, Hong Kong University of Science and Technology, Kowloon, China, and accepted by the Editorial Board June 29, 2015 (received for review February 3, 2015)
Author contributions: Y.X., D.J.B., and S.A.C. designed research; Y.X. and T.-H.T. performed research; Y.X., A.K., and B.-I.P. analyzed data; and Y.X. and S.A.C. wrote the paper.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.1502276112