live room design / early reflections/flutter in live rooms

[telefunken]

i recently finished the framing of my control room, now im moving onto my live tracking room. im trying to finalize all the details before construction.

http://www.farewelltoarms-pr.com/live_s ... ut_two.jpg

above is a link to my final layout plans for my live tracking room. all the walls will be sheetrock. i want the space to be very lively for tracking drums and other instruments. i know the room modes arent that great but i will be treating that issue with roughly 16 "ethan" style bass traps spread throughout the space.

the ceiling height is 9ft. the back wall is angled at 6 degrees. the right side "zigzag" wall are splayed at 6 degrees per zig or zag if that makes sense.

the portion where the walls are parallel at the bottom where its 13x11, will be an acoustic "dead zone" all the walls will be 2" 705.

any problems with this layout? im trying to get an understanding of early reflections and flutter and how they are inter-related to wall angles. but most of the information i find on this board pertain to control rooms, NOT live tracking rooms.

[knightfly]

Feves, I've marked up your drawing the way I'd do it - first, your room modes are actually better in the narrower part of the room. Second, doing small zigzags does very little for even the flutter problem, much less any other parallel wall problems. The reason is that the average distance between walls with the zigzag doesn't change very much, so the problem is still there.

The peaked trap with hangers behind 1" 703 and cloth will likely reduce the number of bass traps you need in the room by several. It will also give that part of the room a less live area - for more live micing, the other side of that end or the other end can be used.

Other wall treatment can be added later as you figure out what's needed for different parts of the room... Steve

[dymaxian]

Hey Steve, for that angled wall with the bass hangers behind it... if he wanted that area to be more live, couldnt he put wood slats over the cloth there, with spaces between? Not helmholtz-resonator style, but with like 1" or more between the slats. That'd keep the high-end in the room for the most part, but let lows back into the hangers and 703. You could increase or decrease the live-ness of the wall with the spacing of the wood. More space between would let more HF sound into the 703 and soak it up, but putting the slats closer together would keep more HF in the room.

Wouldn't do much for the flame-spread ratio of that wall, but there's ways around that. The other thing there is that if the drummer leans against the cloth wall you show there, his hand will go right thru it. =\

Just thinking out loud. That's one of the ideas I have for my place... basically building false walls in the right spots and putting hangers behind it.

Kase
www.minemusic.net

[John Sayers]

If you want to retain a live feel to the room you need to keep the highs - but it will still have a low-mid problem so I suggest some slots to break up the parallels and also built tosection off the lower area which you want to be dead.

like this

chees
john