but this way it won't be the same as cyclone's [allpass~], the way I did it is equivalent to it (and max's).
cheers 2013/10/3 Chris Clepper <cgclep...@gmail.com> > You only need one delay line for the allpass. > > feedforward = input * -gain > feedback = delayout * gain > delayin = input + feedback > output = delayout + feedforward > > http://www.spinsemi.com/knowledge_base/effects.html#Reverberation > > > On Thu, Oct 3, 2013 at 11:29 AM, Alexandre Torres Porres <por...@gmail.com > > wrote: > >> i hope i guess i figured it out on how to implement it with delay lines. >> see attachment. And I realize you can't do this with [fexpr~] or [biquad~] >> because the sample delay length is kinda big for that, right? >> >> cheers >> >> >> 2013/10/3 Alexandre Torres Porres <por...@gmail.com> >> >>> cool, but do you know how to implement cyclone's [allpass~] with it? >>> >>> It's really unclear to me what is the relation of this pass filter with >>> the one you can generate with biquad coefficients, or with raw poles/zeros >>> objects for that matter. >>> >>> Well, one way or another, it's also unclear to me how to do it with >>> delay lines. >>> >>> seems that it is related to a comb filter, right? >>> >>> cheers >>> >>> >>> 2013/10/2 Chris Clepper <cgclep...@gmail.com> >>> >>>> Allpass for reverb is easy to do with delwrite~ and vd~. I used 32 of >>>> them today to recreate a famous 'deep space' reverb. >>>> >>>> >>>> On Wed, Oct 2, 2013 at 1:53 AM, Alexandre Torres Porres < >>>> por...@gmail.com> wrote: >>>> >>>>> hi there, i see the biquad's coefficients can be set as an allpass >>>>> filter, generated by frequency and "Q" parameters. But can it do the same >>>>> as cyclone's [allpass~] filer? If yes, them how since the parameters for >>>>> [allpass~] are different (delaytime and such). >>>>> >>>>> One way or another, I guess that my real question is: how to implement >>>>> [allpass~] from vanilla objects? >>>>> >>>>> thanks >>>>> >>>>> _______________________________________________ >>>>> Pd-list@iem.at mailing list >>>>> UNSUBSCRIBE and account-management -> >>>>> http://lists.puredata.info/listinfo/pd-list >>>>> >>>>> >>>> >>> >> >
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