On holographic reconstruction without reference: Application to machinery noise and comparison with multi-reference holography approach

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• 作者：A. Nejade ^{armand.nejade@inrs.fr" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Acoustic holography ; CIBNAH ; Multi-reference ; Table saw ; Electric power generator ; Pressure-velocity probe
• 刊名：Applied Acoustics
• 出版年：2017
• 出版时间：15 January 2017
• 年：2017
• 卷：116
• 期：Complete
• 页码：348-356
• 全文大小：3043 K

文摘

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.