Acoustic Response of a Sinusoidally Perturbed Hard-Walled Duct
Reflection ((a), (c), (e)) and transmission ((b), (d), (f)) spectral responses, in magnitude, of a sinusoidally perturbed duct computed with (20) (solid line) and numerical results (crosses). ((a)-(b)) Case (i); ((c)-(d)) Case (ii); ((e)-(f)) Case (iii).
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