Simultaneous remote extraction of multiple speech sources and heart beats from secondary speckles pattern
Optics Express, Vol. 17, Issue 24, pp. 21566-21580 (2009)
http://dx.doi.org/10.1364/OE.17.021566
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Abstract
The ability of dynamic extraction of remote sounds is very appealing. In this manuscript we propose an optical approach allowing the extraction and the separation of remote sound sources. The approach is very modular and it does not apply any constraints regarding the relative position of the sound sources and the detection device. The optical setup doing the detection is very simple and versatile. The principle is to observe the movement of the secondary speckle patterns that are generated on top of the target when it is illuminated by a spot of laser beam. Proper adaption of the imaging optics allows following the temporal trajectories of those speckles and extracting the sound signals out of the processed trajectory. Various sound sources are imaged in different spatial pixels and thus blind source separation becomes a very simple task.
© 2009 Optical Society of America
OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(280.1350) Remote sensing and sensors : Backscattering
ToC Category:
Remote Sensing
History
Original Manuscript: April 6, 2009
Revised Manuscript: June 16, 2009
Manuscript Accepted: June 16, 2009
Published: November 11, 2009
Virtual Issues
Vol. 4, Iss. 13 Virtual Journal for Biomedical Optics
Citation
Zeev Zalevsky, Yevgeny Beiderman, Israel Margalit, Shimshon Gingold, Mina Teicher, Vicente Mico, and Javier Garcia, "Simultaneous remote extraction of multiple speech sources and heart beats from secondary speckles pattern," Opt. Express 17, 21566-21580 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-24-21566
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