1: how much rockwoll schould i have between the walls to isolate the diferent rooms?
Rockwool isn't necessarily the best for cost in some areas; generally, if you stay between 1 PCF and 3 PCF inside your walls with a loose fill, it will damp the panels (good thing) and improve wall performance by up to about 10 dB over NO insulation; the actual TYPE of insulation, as long as it's NOT a closed-cell FOAM insulation, doesn't seem to matter much within walls. If the lighter, standard fiberglass insulation is cheaper, it's better to just use that for inside the walls, and save the heavier rockwool or rigid fiberglass (which is usually more expensive) for acoustic treatments inside the rooms.
2: I want windows between the rooms. i know they schould be angeled. is there a minimum angel or would it be enouf with a diference om 5 cm over one meter
Dreamer's got you covered completely on this one; just in case, check out this -
http://www.audio-muziek.nl/audiotechniek/acoustics.pdf
3: i want a controllroom with soft (round) corners (my controllroom can only be come 3x3,5 meters) is there a minimum diameter of this curves
ACtually, you do NOT want a control room with rounded corners; a convex surface FOCUSES sound to a narrow point; if that point is near or at your head, some frequencies will be concentrated there and others (differing wavelengths) will NOT - the idea of a control room is to get the sound as uniform in and around the "sweet spot" as possible. It's also good to get the REST of the CR that way too, and neither case will be helped by putting "parabolic reflectors" in your corners.
What you REALLY need to do in your CR is to leave the corners square, then fill them with rockwool - the least would be to "bridge" the corners with 4" thick rockwool, making them "soft" 45 degree corners. If you don't have enough room to do this in all your VERTICAL corners, then you can also do it across any wall-to-ceiling corners as well. This forms fairly broadband traps at the points in the room where ALL modes terminate, so it gives the smoothest response possible in any given room.
If your room dimensions are bad for modal balance, you may also need to build some "tuned" treatments for the room to help with the more serious imbalance; if so, we can help with that as well.
4: There are eksisting waals. but i want to build all new wals at an angel (no diagonal waals at all) is there an minimum for it to work
Dreamer got most of that one for you too - 6 degrees out of parallel will minimize or eliminate flutter echo (severe cases of this make a "boing" sound when you clap your hands in the room) - for a REflection-Free Zone that's created by wall angles rather than absorption, you need quite a bit STEEPER angles; as Dreamer pointed out, ray-tracing can get you there. The downside is a LOT of wasted space, unless you're using the OTHER side of these walls as non-parallel walls for ANOTHER room of the studio.
For a bit more on ray-tracing methods, try this
http://www.johnlsayers.com/phpBB2/viewt ... c&start=60
sorry for my bad spelling, but i do rad and understand english werry well, but im a realy bad speller. English is my third languidge...
Only reason my english is good is 60 years of practice and it's the ONLY language I know; no apologies necessary.
One thing you CAN do please - click on your
profile at the top of the page, and fill in at least a country, or general area, or town, under
location; makes it easier to recommend things you may actually be able to find in your area - thanks... Steve
i hope to get some good answers
If you read these guidelines
CAREFULLY you will find more ways to make sure you get the best answers we can give -
http://www.johnlsayers.com/phpBB2/viewtopic.php?t=3231
. If you can easily afford it you can fill the whole space, but don't stuff it in there.