A method of performing near- field acoustic holography comprises the following steps. Establishing (102) acoustic data representing a set of near-field acoustic holography measurements at a first set of positions. Extrapolating (204) acoustic data using a model-based extrapolation to obtain extrapolated acoustic data relating to a plurality of positions outside the aperture. Applying (108) a spatial frequency transform to the padded acoustic data to obtain data in a spatial frequency domain. Propagating (110) the Fourier transformed acoustic data. Applying (112) a regularization in a wavenumber domain. Performing (114) an inverse spatial frequency transform.
申请公布号
WO2009130243(A3)
申请公布日期
2009.12.30
申请号
WO2009EP54818
申请日期
2009.04.22
申请人
STICHTING VOOR DE TECHNISCHE WETENSCHAPPEN;TECHNISCHE UNIVERSITEIT EINDHOVEN;SCHOLTE, RICK;LOPEZ ARTEAGA, INES