Journal of Flow Control, Measurement & Visualization

Volume 4, Issue 2 (April 2016)

ISSN Print: 2329-3322   ISSN Online: 2329-3330

Nonlinear Acoustic Shadow Method to Reduce Reverberation Artifact

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DOI: 10.4236/jfcmv.2016.42005    2,221 Downloads   3,054 Views  Citations


A novel technique for reducing reverberation artifact in acoustic shadow imaging using nonlinear ultrasound interaction, called nonlinear acoustic shadow method, has been developed and experimentally studied. In this technique, the conventional acoustic shadow method is modified by using the secondary wave generated by nonlinear interaction of two primary sound waves emitted from parametric array. Either conventional or nonlinear acoustic shadow imaging is carried out for aluminum square cylinder and the size of the shadow is compared. The result shows that the nonlinear acoustic shadow method reduces reverberation artifact inside the square cylinder and has better accuracy in the size measurement than conventional acoustic shadow method.

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Fujisawa, K. and Asada, A. (2016) Nonlinear Acoustic Shadow Method to Reduce Reverberation Artifact. Journal of Flow Control, Measurement & Visualization, 4, 49-55. doi: 10.4236/jfcmv.2016.42005.

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