Exploring the Resolution Limit for In-Air Synthetic-Aperture Audio Imaging

Author(s)
Bedri, Hisham; Raskar, Ramesh; Boufounos, Petros T., 1977-; Feigin, Micha
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Abstract
SONAR imaging can detect reflecting objects in the dark and around corners, however many SONAR systems require large phased-arrays and immobile equipment. In order to enable sound imaging with a mobile device, one can move a microphone and speaker in the air to form a large synthetic aperture. We demonstrate resolution limited audio images using a moving microphone and speaker of a mannequin in free-space and a mannequin located around a corner. This paper also explores the 2D resolution limit due to aperture size as well as the time resolution limit due to bandwidth, and proposes Continuous Basis Pursuits (CBP) to super-resolve.
Date issued
2015-12
URI
http://hdl.handle.net/1721.1/105276
Department
Massachusetts Institute of Technology. Media Laboratory; Program in Media Arts and Sciences (Massachusetts Institute of Technology)
Journal
2015 IEEE International Conference on Computer Vision Workshop (ICCVW)
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Bedri, Hisham, Micha Feigin, Petros T. Boufounos, and Ramesh Raskar. “Exploring the Resolution Limit for In-Air Synthetic-Aperture Audio Imaging.” 2015 IEEE International Conference on Computer Vision Workshop (ICCVW) (December 2015).
Version: Author's final manuscript
Other identifiers
INSPEC Accession Number: 15790289
ISBN
978-1-4673-9711-7
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