6533b81ffe1ef96bd12785a1
RESEARCH PRODUCT
Simultaneous remote extraction of multiple speech sources and heart beats from secondary speckles pattern
Shimshon GingoldYevgeny BeidermanZeev ZalevskyIsrael MargalitMina TeicherJavier GarciaVicente Micósubject
Optics and PhotonicsSound SpectrographyTime FactorsBackscatterComputer scienceComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONImage processingBlind signal separationSpeech AcousticsSpeckle patternOpticsPosition (vector)HumansScattering RadiationComputer SimulationModels StatisticalFourier AnalysisPixelbusiness.industrySignal Processing Computer-AssistedEquipment DesignMyocardial ContractionAtomic and Molecular Physics and OpticsNeural Networks ComputerbusinessPhase modulationAlgorithmsSoftwaredescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-12-10 | Optics Express |