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In Reply to: RE: Speakers in rooms - final thoughts posted by J. Phelan on December 15, 2014 at 18:34:24
And we can add Grimm Audio and Avantguarde, with one model each.So, nearly 10 companies with DSP - but 5 have only one model. Almost none use DEQX - they're either in-house (Linn) or pro-DSP (Legacy).
Grimm doesn't even use FIR - they use "IIR", whatever this is...
Edits: 12/16/14 12/16/14Follow Ups:
Thanks, I wasn't aware of the Spatial software, but when I looked into it I saw that Emerald Physics was also offering DSP crossovers as options for their speakers.
I also didn't know about the Avantgarde Zero 1.
And you were right about Linkwitz. His newest speaker, the LXMini, uses a MiniDSP for its crossover.
And BTW, Linn has 3 models in the Exakt line.
Here is an explanation of the differences between IIR and FIR filters:
http://iowahills.com/A8FirIirDifferences.html
Without getting into all the advantages and disadvantages for audio crossovers and equalizers, FIR filters are generally preferred except at lower frequencies where the filter length limits the Q. So IIR filters are preferred for notching out room modes in the bass, and may be better for a crossover to a sub.
Thanks for the link -The gurus on DSP (like Holm) are using FIR.
I can't believe it's taken over a decade for DSP to take off. I saw an ad from DEQX (in TAS) from 2003 !
But some co. did their own 'passive' research - with "elliptical" xovers and the like. Or what YG did with their phase-accurate design. (I don't think) it was marketing hype - YGs xover was better...
Edits: 12/17/14 12/17/14 12/17/14 12/17/14
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