Analysis of clarinet reed oscillations with digital Fresnel holography | Zendy

Pascal Picart | Zendy; Julien Leval | Zendy; Francis Piquet | Zendy; Jean Pierre Boileau | Zendy; J.-P. Dalmont | Zendy

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Analysis of clarinet reed oscillations with digital Fresnel holography

Author(s) -

Pascal Picart,

Julien Leval,

Francis Piquet,

Jean Pierre Boileau,

J.-P. Dalmont

Publication year - 2009

Publication title -

the european physical journal applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.216

H-Index - 49

eISSN - 1286-0050

pISSN - 1286-0042

DOI - 10.1051/epjap/2008201

Subject(s) - holography , vibration , amplitude , bessel function , oscillation (cell signaling) , optics , digital holography , instrumentation (computer programming) , physics , acoustics , holographic interferometry , fresnel number , computer science , diffraction , genetics , biology , operating system

International audienceThis paper describes optical instrumentation devoted to vibration analysis. Two strategies based on digital Fresnel holography are presented. The first, called time-averaging consists in the numerical reconstruction of the hologram after recording with an exposure time much greater than the vibration period. Thus, the holograms are amplitude modulated by a Bessel function. The last strategy, using a pulsed regime, allows the reconstruction of the full movement of the vibration, even if it exhibits very high amplitude. Experimental results presented in this paper concern the study of the vibrations of a clarinet reed under free and forced oscillation regimes

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