QRD or SKYLINE for TRACKING ROOM

[RafaelM]

Hi I have a room roughly 10ftx13ftx8ft. The whole ceiling is a cloud, (about 6-8 inches of foam), and I have built 12 bass traps (2x4) 4 inches thick.

Planning on building some acoutic panels of 2 inches just for the sakes of it, and adding diffusers. Now, which diffuser should I make? QRD or Skyline?

Skyline seems easier, and i get that it distributes sound 2 ways, thus "wasting" that energy. but just don't know which would be better for stopping flutter echo and standing waves.
ALSO if I did make the QRD, would it be ok to use wood for the back and framing, and just filling it with styrofoam (in order and rectangular formats)?

thanks guys,
appreciate all your help since I have joined

[Lonely Raven]

Originally Posted by RafaelM

Hi I have a room roughly 10ftx13ftx8ft. The whole ceiling is a cloud, (about 6-8 inches of foam), and I have built 12 bass traps (2x4) 4 inches thick.

Planning on building some acoutic panels of 2 inches just for the sakes of it, and adding diffusers. Now, which diffuser should I make? QRD or Skyline?

Skyline seems easier, and i get that it distributes sound 2 ways, thus "wasting" that energy. but just don't know which would be better for stopping flutter echo and standing waves.
ALSO if I did make the QRD, would it be ok to use wood for the back and framing, and just filling it with styrofoam (in order and rectangular formats)?

thanks guys,
appreciate all your help since I have joined

Skyline diffuse sound in all directions, which is cool if that's what you're looking to do with it. The nice thing about a 1D QRD, is that you can control how you want the sound diffused. e.g. if you don't want the sound bouncing off the ceiling, then have the fins vertical so the sound is diffused sideways.

Yes, you can use Styrofoam for the filler. I've used Styrofoam to keep the weight down on 1D diffusers. Or you could use thin wood strips with insulation behind them so the diffuser has some absorption as well.

Any diffusion will help with flutter echo.