Re:Engineers create synthetic, sound-silencing structure tha...
by dang on Sunday July 07, 2019 @05:05PM
(#20377849)
Ok, we've changed from https://www.fastcompany.com/90316833/scientists-have-discove... to the press release it points to and quotes from. Interesting how a press release is more sober and neutral than a third-party media article.
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Re:Engineers create synthetic, sound-silencing structure tha...
by gus_massa on Sunday July 07, 2019 @05:20PM
(#20377936)
Can you also replace the title with the subtitle?
"Boston University mechanical engineers create synthetic, sound-silencing structure that blocks 94 percent of sounds"
94% seams to be a lot, but it is far from "canceling" the sound. It's only a -20dB reduction that transform a very loud sound to a loud sound, not to an inaudible sound.
(Also, it is only useful for a narrow interval of frequencies.)