On holographic reconstruction without reference: Application to machinery noise and comparison with multi-reference holography approach |
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Authors: | A Nejade |
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Institution: | Institut National de recherche et de Sécurité (INRS), 54519 Vandoeuvre Cedex, France |
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Abstract: | This article presents the implementation and application, to two complex machines, of two holography methods called CIBNAH (Complex Intensity Based Near-field Acoustic Holography) and MRNAH (Multi Reference Near-field Acoustic Holography) based on residual spectra. The first is a newly developed method that uses complex sound intensity as its basis and hence bypasses the need for reference signals. Here, several approaches are presented to validate both methods and to investigate each method’s advantages and limitations. |
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Keywords: | Acoustic holography CIBNAH Multi-reference Table saw Electric power generator Pressure-velocity probe |
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