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Whether you’re trying to mask the noise around you or fill the silence, a sound machine can be a handy sleep aid. The constant background noise it creates can drown out loud (potentially ...

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Sound diffusers based on acoustic metasurfaces can be one order of magnitude thinner than conventional diffusers while retaining comparable performance, Yun Jing and colleagues report in Physical ...

The new, 'ultra-thin' sound diffuser is 10 times thinner than the widely used diffusers found in recording studios, concert venues and movie theaters to reduce echoes and improve the quality of sound.