Single-sensor multispeaker listening with acoustic metamaterials.

TitleSingle-sensor multispeaker listening with acoustic metamaterials.
Publication TypeJournal Article
Year of Publication2015
AuthorsY Xie, T-H Tsai, A Konneker, B-I Popa, DJ Brady, and SA Cummer
JournalProceedings of the National Academy of Sciences of the United States of America
Volume112
Start Page10595
Issue34
Pagination10595 - 10598
Date Published08/2015
Abstract

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.

DOI10.1073/pnas.1502276112
Short TitleProceedings of the National Academy of Sciences of the United States of America