RE: Another Room Response Question
2008/05/23 12:11:37
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Unless you have exactly the same setup each time, you'll get inconsistent measurements. Just moving the mic a couple of inches will alter the results, as Ethan Winer demonstrates dramatically in his video on comb filtering, where he moves a mic around the room while monitoring what it's picking up.
In a small room, your own body is a major acoustic variable, so it's best if you leave the room when you take measurements.
But even though the absolute levels will vary, the problem frequencies will remain constant. The important thing is not the absolute levels but identifying the particular frequencies that are a problem. Even a very well-treated room will still have measurable peaks and valleys, so you'll never completely flatten the curve. All you can do is identify the problem frequencies and look for improvement as you add absorption.
All else is in doubt, so this is the truth I cling to.
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