Thanks very much, I will give it a shot. GW
On Fri, May 28, 2021 at 9:10 PM Julius Smith <julius.sm...@gmail.com> wrote: > HI GW, > > I would use this method (simple fi.tf2() biquad allpasses in series): > > > https://www.researchgate.net/publication/224106863_Robust_Efficient_Design_of_Allpass_Filters_for_Dispersive_String_Sound_Synthesis > > @ARTICLE{AbelAndSmithDAFX06, > AUTHOR = "Jonathan Abel and Julius O. " # Smith3, > TITLE = "Robust Design of Very High-Order Allpass Dispersion > Filters", > JOURNAL = dafx06, > MONTH = sep, > YEAR = 2006 > } > > Cheers, > - Julius > > > On Fri, May 28, 2021 at 1:00 PM Gary Worsham <gary.wors...@gmail.com> > wrote: > >> Sorry if this is a repeat but I've just signed up for the mailing list >> again, and previous submissions said "you're not registered"... maybe I'm >> in some sort of limbo at the moment. >> ================================= >> I'm interested in messing with some structures suggested by Julian >> Parker's work on spring reverb emulation. >> https://acris.aalto.fi/ws/portalfiles/portal/13004391/art_10.1155_2011_646134.pdf >> >> This paper suggests an "interpolating all-pass delay". Initially, I >> don't think I would care about modulating these in real time, but of >> course, everything is better with envelope modulation so I'd probably try >> that eventually. >> >> The library includes a handful of all passes and of course I can try all >> of them, but wondering if a particular one would be particularly swell for >> this kind of thing. >> >> >> https://faustcloud.grame.fr/doc/libraries/index.html#thiran-allpass-interpolation >> >> https://faustcloud.grame.fr/doc/libraries/index.html#fi.allpass_comb >> >> https://faustcloud.grame.fr/doc/libraries/index.html#fi.allpass_fcomb >> >> >> https://faustcloud.grame.fr/doc/libraries/index.html#fi.allpass_fcomb5-and-fi.allpass_fcomb1a >> >> Note that I did some experiments in the past with this sort of thing on a >> Spin FV-1 and found that chirp block lengths in the 12 to 20 samples range >> (at 32768 Hz fs) seemed to work well for this sort of thing. However, the >> FV-1 doesn't have enough instructions to generate a very long chirp. I am >> really looking to emphasize the dispersion "chirp" in this particular >> exercise. >> >> Thanks! >> >> GW >> >> >> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> >> Virus-free. >> www.avast.com >> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link> >> <#m_-1852917894731421042_m_3768652731459431734_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> >> _______________________________________________ >> Faudiostream-users mailing list >> Faudiostream-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/faudiostream-users >> > > > -- > "Anybody who knows all about nothing knows everything" -- Leonard Susskind >
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