Absorbing low-frequency sound is a big job, or at least, a job for big things. Acoustic absorption systems require big resonant cavities with large amounts of heavy damping material and significant surface areas to work efficiently. Consequently, the sound-deadening systems used in music studios and anechoic chambers take up a lot of room. Now scientists have flipped this notion on its head by designing coiled metasurfaces that not only completely absorb low frequency sounds, but are a tiny fraction of the size of traditional sound-absorbing systems.
.. Continue Reading Acoustic metasurface design completely absorbs low-frequency soundCategory: Materials
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from Gizmag Emerging Technology Magazine http://ift.tt/24m0qBO
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