i have been serching for answers for a lot of questions. I found som of them, but i still have some questions
1: how much rockwoll schould i have between the walls to isolate the diferent 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
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
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
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...
i hope to get some good answers
building of new studio in eksisting rooms
-
the dreamer
- Posts: 207
- Joined: Thu Dec 11, 2003 3:02 am
- Location: in the alps / Europe
Some quick thoughts, the pros will follow up 
1: how much rockwoll schould i have between the walls to isolate the diferent rooms?
The rockwool is not the mainfactor for TL between the rooms. So I think there's no general answer to that. It will depend on the space between the 2 leafs and on your financial situation
. If you can easily afford it you can fill the whole space, but don't stuff it in there.
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
Angled windows is no must, in fact (I think it was Steve who recommended that) the TL will be higher if you make'em parallel and gain space between the panes. The spring in the MSM here is wider then.
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
I'm not sure if I really understand what you mean, but with such a small room you will need every cm³ of available space for absorbtion (especially in corners...for example Studiotips Superchunks). You won't see the round corners anyway!
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
General understanding here is 6 degrees for the minimum. But you can raytrace yourself...the goal is to have no direct reflection from the sidewalls to your mixposition but behind it.
You can easily accomplish that with slot resonators. look at Johns index page, there's a link to the plans.
greetings
1: how much rockwoll schould i have between the walls to isolate the diferent rooms?
The rockwool is not the mainfactor for TL between the rooms. So I think there's no general answer to that. It will depend on the space between the 2 leafs and on your financial situation
. If you can easily afford it you can fill the whole space, but don't stuff it in there.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
Angled windows is no must, in fact (I think it was Steve who recommended that) the TL will be higher if you make'em parallel and gain space between the panes. The spring in the MSM here is wider then.
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
I'm not sure if I really understand what you mean, but with such a small room you will need every cm³ of available space for absorbtion (especially in corners...for example Studiotips Superchunks). You won't see the round corners anyway!
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
General understanding here is 6 degrees for the minimum. But you can raytrace yourself...the goal is to have no direct reflection from the sidewalls to your mixposition but behind it.
You can easily accomplish that with slot resonators. look at Johns index page, there's a link to the plans.
greetings
-
knightfly
- Senior Member
- Posts: 6976
- Joined: Sun Mar 16, 2003 11:11 am
- Location: West Coast, USA
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
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