Zusammenfassung Near-field Acoustical Holography (NAH) is based on performing 2D spatial Discrete Fourier Transforms (DFT), and therefore the method requires a regular mesh of measurement positions. To avoid spatial aliasing problems, the mesh spacing must be somewhat less than half of the acoustic wavelength. In practice, this requirement sets a serious limitation on the upper frequency limit.
Extension of acoustic holography to cover higher frequencies
2019-01-01
18 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Deutsch
Extension of acoustic holography to cover higher frequencies
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