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Sound / Noise Cancelling Device (not RF)

Sound / Noise Cancelling Device (not RF)

grabcad

Developed by Reza Ghaffarivardavagh and Xin Zhang at Boston University, this is a simple device that reduces noise level. It doesn't CANCEL the noise, but this is what the media reports.See more details at my blog https://mede.tech and https://phys.org/news/2019-03-acoustic-metamaterial-cancels.html

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