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Better seal for see-through sound wall

Researchers have arranged rods into a new kind of sound filter that forbids a selected frequency band from passing through from any angle.

 

References:

Meseguer, F., et al. 1998. Sound attenuation by a two dimensional array of cylinders. Journal of the Acoustical Society of America 104(September):1744.

 

Sources:

Francisco Meseguer
Universidad Politecnica de Valencia
Unidad Asociada CSIC-UPV
Departmento de Física Aplicada
Camino de Vera s/n
46022 Valencia
Spain

From Science News, Vol. 154, No. 18, October 31, 1998, p. 284.
Copyright Ó 1998 by Science Service.

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