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.)
"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.)