Dennis wrote on Mon, 28 June 2004 13:21 |
Length, Width, ceiling height for starters.
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Those were all fixed dimensions, other than length, which was modified for a machine room. Space was at a premium, and though it a smallish space, I have treated rooms this size before with very good results...
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Are walls parallel? If they are what was the workaround.
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Yes, they are parallel. Basically, with a room of this size, you have to basically add bass trapping on as many surfaces as possible, and the room modes are often close together and at somewhat higher (more problematic) frequencies due to the dimensions. So we built diaphragmatic absorbers into the walls all the way around the room and are adding hinged, randomized diffuser/absorbers that will mount at an angle on the walls on either side of the mix positions, insuring 1st reflections are simply directed to the rear of the room. IME, simply deadening the front of the room to tame first reflections makes the room 'too dead' - by steering that energy to the back of the room, you allow the room to sound natural but don't compromise imaging in the mix position.
We're also adding an absorptive cloud above the mix position to control ceiling reflections. Some added absorption may be necessary after he gets everything in the room, but my basic formula is:
1] Trap the bass. get it a smooth as possible on the bottom. doesn't have to be perfect, the engineer will learn the room, but he needs to hear it fairly well...
2] Steer 1st reflections to the rear of the room. I don't want the room 'dead', but simply want to make sure the engineer can hear the spatial cues accurately.
3] Absorb anything that sticks out. obviously, a hard flat surface (ceiling) just above the desk will cause issues, so let's insure those go away. Ceiling is too low to also angle this piece, so it will be purely absorptive. This is OK, most speaker don't have very good vertical off-axis response - not much energy is lost and what
is absorbed is fairly inaccurate anyway.
Hope this clarifies a bit...