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Wayne A. Pflughaupt wrote:
 Welcome to the Forum, germanicus! |
Thanks!
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No, there is no way to add more filters to an equalizer than what it has, any more than it's possible to add additional loading drawers to your DVD player.  If you need more you might try a 1/3-octave equalizer - they have about 30 filters per channel, but they are all at fixed frequencies and bandwidth, not parametric like the BFD (I assume that's what you're using?).
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Sorry - I didn't ask my question very clearly. I mean in REW - when I open the EQ Filters table in REW, there are only 12 filters available. I was wondering if it's possible to increase that number.
I'm not using an equalizer - I'm using a PC based convolver (the Inguz plugin for slimserver). So I've been experimenting with using REW to produce a filter impulse response, which I then export as a WAV file and feed to Inguz. AFAIK there isn't any theoretical limit on how many filters it's possible to apply in the process of producing that impulse response.
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I'd suggest that you're probably over-equalizing, 'cause 12 parametric filters is quite a few even for full-range equalizing.
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You're probably right - I'm pretty new to this, and very much at the experimentation and learning stage.
Using the 12 filters, I can get the corrected curve flat to within +-3 dB from 24Hz-20kHz, which is decent. This weekend I'm going to take some measurements and see how close to reality that actually is. I'm also disobeying the rules and trying to correct for nulls - if I didn't do that, I'd have more filters available. I'm curious to see if it works. It probably won't.