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Neat News 2020-206 (added 2020-07-24)

Noise cancellation for buildings

activeNoiseReduction.png
© Marekich [CC BY-SA 3.0]

Noise cancellation speakers cancel noise before it comes to the ear. Now a corresponding device has been developed that can be put in front of a window so that fresh air can come in but the noise not.

News seen at: Scientific American - Sustainability

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