thanks for your help guys. maybe i misunderstood the concept of minimum phase. i believed a minimum phase filter provides the least amount of phase distortion. i've seen butterworth vs chebyshev phase distortion and its pretty clear (and audible as well) that chebyshev filter causes a lot less phase distortion (better sound resolution, less smearing). i'm looking for even better filters (specifically for the least smearing LP filters) so i was looking into minimum phase. i was comparing with fabfilter's Pro-Q and couldn't understand what they were using (they have options for linear phase and minimum phase so that was my intuition). anyway thanks very much for your help. hopefully i would figure this out soon On Monday, October 21, 2013 at 10:28 PM, Justin Smith wrote: > By the way, it is not mentioned in the CS docs anywhere, but it seems that butterworth filters (butterbp, butterbr, butterhp, butterlp) are minimum phase. http://www.xsgeo.com/course/filt.htm > > > On Mon, Oct 21, 2013 at 11:49 AM, Steven Yi wrote: > > Maybe these pages would help: > > > > http://csounds.com/manual/html/SigmodStandard.html > > http://csounds.com/manual/html/SigmodSpeciali.html > > > > > > > > On Sun, Oct 20, 2013 at 6:36 PM, Machina wrote: > > > > > > hi > > > > > > i see only butterworth, chebyshev, and elliptic filter. > > > where can i find more filters implemented in csound? > > > im specifically looking for minimum phase filter (and other IIR) > > > > > > thanks > > > > > > > > > Send bugs reports to the Sourceforge bug trackers > > csound6: > > https://sourceforge.net/p/csound/tickets/ > > csound5: > > https://sourceforge.net/p/csound/bugs/ > > Discussions of bugs and features can be posted here > > To unsubscribe, send email sympa@lists.bath.ac.uk (mailto:sympa@lists.bath.ac.uk) with body "unsubscribe csound" > > > > >