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Author: bb01 on December 12 2007 Viewed 1642 times. 9 people liked this blog. You can rate it below if you haven't already.
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Hello,
I've recently moved to a nice fifties apartment. It has nicely curved walls and alround a very organic, friendly athmosphere.
The room where Im gonna build my music cave has one of these bends in one of the walls, and its giving me a headache.
I've drawn absorbers where problems with early reflections should arise. The rest is a bit more confusing.
Please oh collective uberbrain thats is the em411, can you help me figure this one out?
1 is the listening position.
2 : would be the ideal listening position.
3 : absorbers
4 : monitors
5 : heating (my table isnt in the middle of the room cos of this)
6 : segmented door
1) Am I right in thinking the angled corner will help prevent bass accumulation?
How do I mimic that on the left?
2) What would be the effect of opening the doors behind me? Will unwanted frequencies (standing waves) dissappear out the back?
3) Is it really benificial to attempt getting the room as symmetrical as possible?
The dotted black lines show a left/right difference.
The blue line would correct this. (see red points)
Should this be a diffuser (bookshelf) or a absorber (clothes rack).
4) Am I being anal? I know I do not need to be so precise, but it's nice to know what the ideal situation would be 
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12/12/07
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adcBicycle
I bet cbit can help you.
I am of lesser knowledge, but, I think generally the more bass trapping you can do the better. Worry less about balancing, more about putting traps in the best areas.
You should do a google sketchup of your room... make it easier to figure out where stuff can go.
12/12/07
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Zanf
all depend on 4 but that depends on doing some simple experiements:
do you have your kit all set up?
if so, then pencil in some quarter bars of semitone stepped notes in a sequencer playing an untreated sinewave. sit in your listening spot and then listen to see if the weight of the notes vary much, if at all. If there are some that are a lot louder than others then you have node issues and will need acoustic treatment to balance those out.
This article on soundonsound this month goes into some practical solutions and considerations: link
12/12/07
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bb01
bggrit - cant seem to load the pic
12/12/07
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cbit
use image shack link to upload the pic and post the link
12/12/07
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cbit
Are you using osx? if so fuzzmeasure is a very handy was to 'see' the response of your room and takes out some of the guesswork when shifting things around/installing room treatment ("does it really sound better or did i just forget how it souded before?")
link you can get quite a long way with a measuring mic and the demo version.
12/12/07
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Zanf
oh yes, to answer briefly those Q's:
1. No, a corner will not help to reduce bass accumulation. You need to understand bass nodes and how standing waves occur.
2. The eff3ect will be that they will no longer reflect the mid/high frequencies that the material they are made of would naturally reflect. It would not reduce standing waves [if you have an issue with them] but would just lower the wavelength of the standing wave that causes issues [more distance until reflection = longer wavelength]
3. Its only beneficial in so far as that you can predict whats going on in the room and then apply acoustic solutions. My studio is 14' x 10' x 10' and so will display certain acoustic characteristics with nodes at specific frequencies and bass clusters in the corners at specific tones.
What you will find is that a lot of places tend to break up a symmetrical room with symmetrical acoustic treatment so that it doesn't then introduce stereo image issues or weird nodes.
Like this for instance: link - check how the panels are all set symmetrically but at angles to break the 'boxy' shape of the room.
12/12/07
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ejectorset
is that a studio or the inside of vader's tie fighter ?!
12/12/07
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Zanf
the inside of vaders tie fighter: link
12/12/07
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bb01
I'm mostly on pc, but I can hook up the monitors to the mac.
zanf said: "1. No, a corner will not help to reduce bass accumulation." Had hoped the irregular shape of the room would help acoustically. oh well.
12/12/07
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bb01
12/12/07
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bb01
gif no workee on em411?
12/12/07
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bb01
Zanf said: "do you have your kit all set up?
if so, then pencil in some quarter bars of semitone stepped notes in a sequencer playing an untreated sinewave. sit in your listening spot and then listen to see if the weight of the notes vary much, if at all. If there are some that are a lot louder than others then you have node issues and will need acoustic treatment to balance those out.
This article on soundonsound this month goes into some practical solutions and considerations: link"
Just moved into the new place. Thought Id get some advice before moving all my stuff around. Have been doing enough of that the last week. 
Zanf said: "2. The eff3ect will be that they will no longer reflect the mid/high frequencies that the material they are made of would naturally reflect. "
The room behind the doors is a bedroom though. i think (hope) it will act as a big bass trap.
12/12/07
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Zanf
bb01 said: "Just moved into the new place. Thought Id get some advice before moving all my stuff around. Have been doing enough of that the last week. "
Then set up just your amp & monitors and the ability to do the sine wave thing [from laptop/tape/etc - I will record it and send it as an audio file if you need it] to investigate the basic acoustics of the room.
12/12/07
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bb01
I am certain i will have bass problems, but Ill have to set up a different time.
I'm having people over, so... (actually, the girlfriend is)
At least the gddmn pic is up now.
Cheers.
12/12/07
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adcBicycle
Damn, totally didn't see that image ... sorry!!
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