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Friday, October 6, 2017

Asymmetric sound absorption lets in the light

http://ift.tt/eA8V8J Many asymmetric absorbers are currently based on a single-port system, where sound enters one side and is absorbed before a rigid wall. In this design, however, light and air are unable to pass through the system. But new research shows that asymmetric absorption can be realized within a straight transparent waveguide.

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