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We predict theoretically the nondiffractive propagation of sonic waves inperiodic acoustic media (sonic crystals), by expansion into a set of planewaves (Bloch mode expansion), and by finite difference time domain calculationsof finite beams. We also give analytical evaluations of the parameters fornondiffractive propagation, as well as the minimum size of the nondiffractivelypropagating acoustic beams.Comment: 7 figures, submitted to J. Acoust. Soc. A

Theoretical prediction of the nondiffractive propagation of sonic waves through periodic acoustic media