Room Acoustics
Posted by Josh Carter [IP: 142.5.35.9] on April 01, 1999 at 12:54:27
Using Mozilla/4.05 [en]C-cale-v4531 (WinNT; I):
In Reply to: Room Acoustics posted by Scott Boyd on March 31, 1999 at 16:45:02:
Scott,
Andre is correct. Parallel walls do not reduct the room nodes, they redistribute them over a wider range IN THE ENTIRE ROOM. Where you are sitting, the distance between the walls in the length, width and height directions will be the nodes that will effect the frequency response of what you hear at that point in the room.
If you have non parallel walls it means that when you move, the three dimensions change and the nodes change, which means it is difficult to calculate them.
Wherever you are in a non parallel room the three dimensions around you produce nodes, but they are just as strong as if the entire room was those dimensions. So use parallel walls and then you can reliably calculate the nodes and takes steps to reduce them with acoustic treatments.
The same theory was also proposed by Floyd Toole in a paper for Harman Int.
Josh
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