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What determines how much sound is absorbed when sound hits surfaces?

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2008-03-19 05:19:46

Sound is mechanical energy. The energy displayed by the source

is transferred into the medium through which it travels. When the

wave, that moving energy, comes into contact with a surface, some

of the energy is transferred into the surface. But how much? The

more solid and "less moving" the surface (seen on a tiny scale),

the less the moving air waves, those compression and rarifaction

waves, can transfer energy into the surface. And that's what it's

all about. The "softer" the surface, the more those pressure waves

in air can affect that surface and transfer their energy into

it.


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