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Showing 1 to 1 of 1 for “"low frequency acoustic impedance"”.
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Survey of free-field methods to measure the normal specific acoustic impedance of ground surfaces in situ at low frequencies
… techniques for measuring the normal specific acoustic impedance of the ground in situ and at low frequencies are examined. These techniques include the use of a spherical wave model, plane wave model, boundary conditions method, and the ANSI S1.18-2010 standard. Experiments are performed with …