how important in angled ceiling?

hello everyone, have been reading this forum for a while and i have found A LOT of helpful information to help me with my studio build. attached is a rough plan. all outer walls, ceiling, and floor, are concrete. current ceiling height is 9.5ft. and im having trouble deciding if i should have an ANGLED ceiling or FLAT with a huge absorption cloud over mix posision. my plan is to have the front half mostly absoption, and back half diffusion. also, i have a huge 20ft window on the left of the mix position. glass is 1" thick, but i can still hear noise from outside bc building is on main street. what can i do about this? ive been looking into heavy curtains with Mass loaded vinyl. any ideas or suggestions i are much appreciated. Thanks

Hi there "rony316". Please read the forum rules for posting (click here). You seem to be missing a couple of things! :) - Stuart -

sorry about that. I thought i added it when i registered..

Anyone??? :(

Not that important, you can do it and it helps, but in a control room it isn't the end all, be all of acoustic components. For instance, you install an overhead cloud designed to benefit the room in the finished condition and angle that and essentially achieve the same results with lass labor/headache.

Thanks for the reply. any suggestions for the 20 foot glass window on the left of the mix position? its 1 inch thick glass. Thanks

any suggestions for the 20 foot glass window on the left of the mix position? its 1 inch thick glass.

You seem to have only half of your isolation shell. From what I see on your model, there is only an outer-leaf: to isolate the room, you also need an inner-leaf, a true "room-in-a-room". That's the only way to get good isolation at a reasonable cost. Simply adding more mass to what you have already won't accomplish much, especially considering that the glass is 1 inch thick! One thing you could do, is to seal everything air-tight. Lack of good sealing is a major source of poor isolation. So check that your entire outer-leaf is sealed, very carefully. If that doesn't help enough, then you'll have to build room-in-a-room inner-leaf. - Stuart -

rony316 wrote:

Thanks for the reply. any suggestions for the 20 foot glass window on the left of the mix position? its 1 inch thick glass. Thanks

I would check the TL on it, one inches thick is compatible with a typical wall assembly with a rated 50 ish STC, but because it is so large, it will vibrate and change the whole symmetrical experience of the room.

The wall it is in is all concrete block with stone on the outside and probAbly around 60-70db TL . What can I do to increase the windows TL? thick curtain?

Do you think a thick curtain is going to change the TL of a 1 inch thick piece of glass...really:) The issue is not the glass (which is unusual), as the wall assembly is almost certainly having the same TL so in order to improve that you would have to develop a room in a room and I think Stuart already addressed that.

sorry the model was not complete. It was just a quick sketch to show the window and dimension Of the room. it WILL be a complete room within a room. but not floating floors/walls as there are no vibrations from the outside. just some car noise every now and then. will adding another glass window on the inner (Sheetrock) wall solve the problem? Correction: glass is 3/4th not 1 inch

how about a wooden shade the blocks sound from window and possibly act as a sound diffuser as well?