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Error in Help ?

Discuss Error in Help ? in the Subwoofer Equalization | Calibration forum; Error in Help ? In Help , page Filter Adjustment : The optimiser limits its range of Q/bandwidth adjustment so that filters do not ...


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Old 11-07-06, 08:17 AM   #1 (Link)
 
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Error in Help ?


In Help , page Filter Adjustment :

The optimiser limits its range of Q/bandwidth adjustment so that filters do not get narrower than 3Hz bandwidth or broader than 15Hz and Q does not get lower than 3.0. This is because it is targeting room resonances, which occupy that range of bandwidths. For broader or narrower filters make manual adjustments.

15Hz ??


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Old 11-07-06, 08:50 AM   #2 (Link)
 
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Re: Error in Help ?


Quote:
15Hz ??
This is filter width....

brucek


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Old 11-07-06, 11:40 AM   #3 (Link)
 
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Re: Error in Help ?


Quote:
brucek wrote: View Post
This is filter width....

brucek
Yes I Know

Why 15Hz ? It is not much !


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Old 11-07-06, 01:00 PM   #4 (Link)
 
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Re: Error in Help ?


Quote:
Why 15Hz ? It is not much !
I don't think so. That's the filter bandwidth at the half gain points.

Certainly as you go lower in frequency, it makes for a larger filter. This is simply the maximum that REW calculates. You can go wider manually though.

Here's a ~15Hz filter width at 30Hz and at 100Hz.

30hz.jpg

100hz.jpg

brucek


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Old 11-07-06, 06:27 PM   #5 (Link)
 
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Re: Error in Help ?


Quote:
sonata31 wrote: View Post
Yes I Know

Why 15Hz ? It is not much !
Because modal resonances are narrower than that.


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Old 11-08-06, 03:43 AM   #6 (Link)
 
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Re: Error in Help ?


Ok, Thank You for your responses


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