How pure is the signal when it reaches our ears?
On Saturday, 25 January 2014 22:15:56 UTC+8, news wrote:
As for air density changing every few centimeters in a calm room, I don't
think so. Air and any gas evenly disperses itself in its give area; in this
case a room. The atmospheric pressure is the force exerted on the walls and
everything else in the room by the air molecules bumping against everything.
Shaun
Unless, the air in the room stands still and conducts sound as linear and consistence like wires.
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