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Time and/or phase-aligning multiple subs - all-pass filters?

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#21 andyc56



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Posted 19 January 2017 - 09:18 AM

Now you make me want to check to see if PEQs with opposite gains that are otherwise identical cancel each other in my implementation.


I recently got into a discussion with REW author John Mulcahy about this, and it turned out to be very fruitful. There are several different conventions for "Q" for PEQ filters of different hardware vendors, and some question of how this parameter relates to bandwidth, and even how bandwidth should be defined in the first place.  I wrote an article about it to hopefully clear up some of the mystery about different conventions for different DSP vendors.

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#22 maxmercy


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Posted 22 January 2017 - 02:57 AM

BEQ corrections use the RBJ version of Q.



#23 SME


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Posted 22 January 2017 - 08:19 AM

BEQ corrections use the RBJ version of Q.



Thanks for the note.

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