title: Simultaneous remote extraction of multiple speech sources and heart beats from secondary speckles pattern.
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.
authors.affiliation: School of Engineering, Bar-Ilan University, Ramat-Gan, Israel. zalevsz@eng.biu.ac.il
authors.forename: Zeev
authors.initials: Z
authors.lastname: Zalevsky
authors.forename: Yevgeny
authors.initials: Y
authors.lastname: Beiderman
authors.forename: Israel
authors.initials: I
authors.lastname: Margalit
authors.forename: Shimshon
authors.initials: S
authors.lastname: Gingold
authors.forename: Mina
authors.initials: M
authors.lastname: Teicher
authors.forename: Vicente
authors.initials: V
authors.lastname: Mico
authors.forename: Javier
authors.initials: J
authors.lastname: Garcia
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D004867:Equipment Design; D005583:Fourier Analysis; D006801:Humans; D015233:Models, Statistical; D009200:Myocardial Contraction; D016571:Neural Networks, Computer; D055095:Optics and Photonics; D012542:Scattering, Radiation; D012815:Signal Processing, Computer-Assisted; D012984:Software; D013018:Sound Spectrography / Q000379:methods; D013061:Speech Acoustics; D013997:Time Factors