Room acoustics

From Academic Kids

Room acoustics describes how sound behaves in an enclosed space.

The way that sound behaves in a room can be broken up into roughly four different frequency zones:

  • The first zone is below the frequency that has a wavelength of twice the longest length of the room. In this zone sound behaves very much like changes in static air pressure.
  • Above that zone, until the frequency is approximately 11,250(RT60/V)1/2, wavelengths are comparable to the dimensions of the room, and so room resonances dominate.
  • The third region which extends approximately 2 octaves is a transition to the fourth zone.
  • In the fourth zone, sounds behave like rays of light bouncing around the room.

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