Engineers and scientists at Duke University have developed an “acoustic cloaking deivce” using “metamaterials”. The device passively disrupts sound waves in such a way that the device itself, and anything within it, can not be detected acousticly. The result is that the sound waves behave as if they are reflected from a flat surface. Professor of Electrical and Computer Engineering, Steven Cummer, is the leader of this design project.
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World’s first 3D acoustic cloaking device created.
There may be apps that do that. You can definitely find spectrum analyzers that will measure ultra low.
Is there an APP that can measure the ultra low frequency levels?
.Plaster is a viable middle and high frequency absorber. We have used it many times in new builds that have…
Hi Dennis I'm curious what you think of acoustic perforated plaster - say CST Galaxy -on particularly ceilings in music…