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Old 12-26-07, 10:40 PM   #56 (Link)
 
DrWho
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Alias: Mike Bentz
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Re: Waterfalls


I should mention that there is absolutely no doubt that the BFD is NOT introducing any kind of ringing when the filter is boosted. What we're seeing is precisely the effects of the window used to generate the waterfall...not what's happening in real life.

I brought it up to point out that changes in amplitude can pretend to show differences in ringing (as so clearly demonstrated for us). Since we know that no ringing is added when a frequency range is boosted, we can use the graphs to normalize what constitutes no change in decay when amplitude is changed.

In other words, any EQ added to your subwoofer is going to show the exact same difference on the waterfall that the EQ made....and it's not because the EQ magically made the room ring less. Likewise, any natural amplitude variations with the subwoofer will also show up as ringing (and dips will show up as decaying faster).


-Mike Bentz
~It's all about compromise~

"It's territorial with the soundboard. So you're mixing and some dude comes by spewing opinions and trying to turn knobs. It's akin to going up to an artist and painting over his unfinished masterpiece. You just want to shove your paint brush up his nose and throw the soundboard out the window!"

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