Acoustic Holography
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. The fundamental elements in certain inverse acoustic problems: their roles and interactions
Acoustic holography and holophony, wave field synthesis and active noise control are based on common elements which are causality, model, objective, and regularization. In the frequency domain (putting causality aside), a simple formulation states the influence - not the interaction - of errors of the model and objective and of regularization of the results.
J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012
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2. Supersonic acoustic intensity : implementation and evaluation / Intensidade acustica supersonica : implementação e verificação
This work presents an experimental implementation and evaluation of the acoustic parameter named Supersonic Acoustic Intensity (SAI) which permits determining the part of the acoustic intensity of sound source that will be radiate to farfield. This parameter permits quantify precisely the radiation efficiency or acoustic radiator to solve the vibroacoustic p
Publicado em: 2006
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3. Vibroacoustic vharacterization using nearfield acoustic holography / Caracterização vibroacustica usando holografia acustica de campo proximo
In this work, the Nearfield Acoustic Holography technique - NAH was explored as an way to analyze vibroacoustic problems. Holography is a process that allows to determine acoustic fields characteristics using a Discrete Fourier Transform - DFT, from a regular grid of measurements obtained in an acoustic environment for which the Green s function is known. Th
Publicado em: 1999