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I'm not sure how much difference it makes for low-order filters (biquad has 2 poles and 2 zeros). The differences really matter more for higher order filters, say 8 poles or more..."
That's really relevant information, thanks :)
> I'd just use the ones already made in iemlib...
Sure, but it's more of theoretical doubt and concern. I just wanna learn more about it, even if I just use what's there in iemlib.
> There's also a 3rd order BW in the docs
I assume it's a matter of how to calculate the coefficients for you to get filters that are butterworth/chebyshev/etc, and the text from miller point to how to get butterworth coeficients. But it doesn't point to how to get Chebyshev 1 pr 2, Eliptic, Bessel and whatever. Any hints?
And I still wonder what's the kind of filter from objects like
[lop~], [hip~], [bp~], [lores~] and [reson~] for instance (cause I know how to get those with biquad coefficients). And also about the filters described at "Cookbook formulae for audio EQ biquad filter coefficients" http://www.musicdsp.org/files/Audio-EQ-Cookbook.txt
Do any of you know what kind of filter it is?
Thanks