期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 112, 期 34, 页码 10595-10598出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1502276112
关键词
metamaterials; cocktail party problem; compressive sensing
资金
- Multidisciplinary University Research Initiative from the Office of Naval Research [N00014-13-1-0631]
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.
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