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Sonic crystal is a cost effective solution for noise control because of its acoustic bandgap due to periodic arrangement. Present research demonstrates the experimental investigation of a finite sonic crystal and corresponding numerical validation using finite element analysis. Though numerous reports examined the sonic crystal numerically, however, no report explains a strong agreement between numerical and experimental measurements. The present work addresses aforementioned issues in detailed manner. Two different sonic crystals using cylindrical scatterers have been examined in two environments such as open environment and in a portable anechoic chamber using two different boundary conditions such as rigid top and absorber top, and two measurement techniques such as frequency sweeping and Gaussian noise source, followed by two different noise sources. Subsequently, detailed numerical simulations have been carried out by applying different boundary conditions to simulate the measurement environment. The issues involved in each situation and corresponding sources of errors have been discussed in detail in this paper.
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