Abstract
Acoustic filters are being developed for attenuating liquid-borne noise in piping systems. The filters investigated are analogous to RLC type electrical filters, using the series inertances of short lengths of piping together with lumped impedance shunt elements to produce low-pass filtering action. The construction of several 2- and 3-stage experimental models is shown, along with noise reduction data measured in a laboratory water pumping system using a centrifugal pump as the noise source. (This work was supported by the Bureau of Ships.)
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