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Researchers develop 'acoustic metamaterial' that cancels sound (2019)
- h2odragon 6y agobetter muffler design apparently. I didn't see anything addressing noise sources with varying characteristics, nor any discussion of the geometry of source to their muffler / sound sink. Great but not especially new so far as i can see?
- deleted 6y ago[deleted]
- gus_massa 6y agoThe sound is not canceled. It works only for one frequency, and the reduction is 94% that seams to be a lot but it is only a reduction of 25dB.