Slit-array transmission loss feasibility in airborne sound

Details Slit-array transmission loss feasibility in airborne sound Slit-array transmission loss feasibility in airborne sound

2011-02-24

arxiv.org/abs/1102.4960v1

Physics

Condensed Matter

Other Condensed Matter

3 pages, 3 figures

Scientific paper

Recent experiments conducted in water at ultrasonic frequencies showed the possibility of overcoming the transmission loss provided by homogeneous plates at certain frequencies by drilling periodically distributed holes on it. In this letter, the feasibility of using slit arrays to increase the transmission loss at certain frequencies for airborne sound is studied. Numerical results predict a) very low transmission loss for a slit array in comparison with a homogeneous plate in air and b) the transmission loss of a slit array can overcome that of a homogeneous plate if the impedance mismatch is low enough.

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