A patch near-field acoustical holography procedure based on a generalized discrete Fourier series

详细信息    查看全文

• 作者：A.M. Pasqual ^{ampasqual@demec.ufmg.br}
• 关键词：Near-field acoustical holography ; Small measurement aperture ; Spatial windowing ; Inverse problems ; Sound field reconstruction ; Regressive discrete Fourier series
• 刊名：Mechanical Systems and Signal Processing
• 出版年：2017
• 出版时间：June 2017
• 年：2017
• 卷：90
• 期：Complete
• 页码：285-297
• 全文大小：2645 K
• 卷排序：90

文摘

A procedure is proposed to reduce the spatial windowing effects in planar NAH. A generalized discrete Fourier series replaces the discrete Fourier transform. The method is computationally efficient and can be used with small apertures. A thin plate driven by a point force is considered as a numerical example. The proposed method and SONAH lead to similar reconstructed velocity fields.