Hi Klaus, Congrats, I don't know your programming background before starting this project, but I think it is a remarkable achievement!
Yann Le jeu. 29 juil. 2021 à 11:11, Klaus Scheuermann <kla...@posteo.de> a écrit : > Dear Yann, > > so here is a quick update. I managed to implement a multichannel version > of my project master_me: > https://github.com/trummerschlunk/master_me/blob/master/master_me_gui.dsp > > The noise-gate example was very helpful and by understanding par, si.bus, > and signal routing in general, I could transfer the solution to my other > building blocks. > > The only part, where I still rely on variables is the leveler's gating > function. I guess the code is a bit dirty too, but it works... > Feel free to optimize ;) > > Thanks again to you and to the whole list <3 > > Klaus > > > On 28.07.21 09:16, Klaus Scheuermann wrote: > > Hi Yann! > > Of course it works perfectly and I learned about par, si.bus and > ro.interleave :) > > Thanks... will be back soon I guess ;) > > Klaus > > > On 27.07.21 12:17, Yann Orlarey wrote: > > Hi Klaus, > > Thanks for the example. If I understand correctly, I think you can > generalize: > > gate_stereo(thresh,att,hold,rel,x,y) = ggm*x, ggm*y with { > ggm = gate_gain_mono(thresh,att,hold,rel,abs(x)+abs(y)); > }; > > by the following definition: > > gate_any(N,thresh,att,hold,rel) = B <: B, (B :> ggm <: B) : ro.interleave( > N,2) : par(i,N,*) > with { > B = si.bus(N); > ggm = gate_gain_mono(thresh,att,hold,rel); > }; > process = gate_any(4); > > Cheers, > > Yann > > > Le mar. 27 juil. 2021 à 10:22, Klaus Scheuermann <kla...@posteo.de> a > écrit : > >> Thanks Yann, >> >> I am learning, but still not succeeding... >> >> This is not my end-game, but maybe a good example that I can't solve... >> >> How would I make an N-channel (linked) gate out of this? >> gate_stereo(thresh,att,hold,rel,x,y) = ggm*x, ggm*y with { >> ggm = gate_gain_mono(thresh,att,hold,rel,abs(x)+abs(y)); >> }; >> gate_gain_mono(thresh,att,hold,rel,x) = x : extendedrawgate : >> an.amp_follower_ar(att,rel) with { >> extendedrawgate(x) = max(float(rawgatesig(x)),holdsig(x)); >> rawgatesig(x) = inlevel(x) > ba.db2linear(thresh); >> minrate = min(att,rel); >> inlevel = an.amp_follower_ar(minrate,minrate); >> holdcounter(x) = (max(holdreset(x) * holdsamps,_) ~-(1)); >> holdsig(x) = holdcounter(x) > 0; >> holdreset(x) = rawgatesig(x) < rawgatesig(x)'; // reset hold when raw >> gate falls >> holdsamps = int(hold*ma.SR); >> }; >> >> Thanks, >> Klaus >> >> >> >> >> On 26.07.21 16:27, Yann Orlarey wrote: >> >> Hi Klaus, >> >> You can give names to the input signals as in your example, but you don't >> have to. In other words, instead of writing: >> >> process(x) = f(g(x)); >> >> you can use a more idiomatic style, and write: >> >> process = g : f; >> >> Faust is inspired by Moses Schönfinkel's combinatory logic (1924) and >> John Backus' FP (1977). The idea of Schönfinkel was to eliminate the need >> for variables in mathematical logic. In functional programming, this style >> is known as "point-free" or "tacit" programming. >> >> At first sight, it seems complicated to do without variables. But a >> variable is just one way (among others) to move a value to its point of >> use. In Faust, you can use the `_` and `!` primitives, as well as the five >> operations of the block diagram algebra (or the route{} primitive) to >> create complex routing to move signals to their point of use. >> >> The advantage of point-free expressions is that they are more modular and >> often easier to generalize. Let say you want to write a >> quadriphonic amplifier. You can write: >> >> amp4(v,x1,x2,x3,x4) = v*x1, v*x2, v*x3, v*x4; >> >> but it is better to write: >> >> amp4(v) = *(v), *(v), *(v), *(v); >> >> or even better to write: >> >> amp4(v) = par(c,4,*(v)); >> >> This is now easy to generalize to a variable number N of channels: >> >> anyamp(N,v) = par(c,N,*(v)); >> >> (note: by convention, we use capital letters for parameters that need to >> be known at compile-time, here N) >> >> You can now specialize this general definition, as in: >> >> amp4 = anyamp(4); >> amp8 = anyamp(8); >> >> So much for the principle, on an extremely simple example. What you are >> trying to do is probably more complicated. Don't hesitate to post a little >> diagram if you need help... >> >> Cheers, >> >> >> Yann >> >> >> Le lun. 26 juil. 2021 à 10:23, Klaus Scheuermann <kla...@posteo.de> a >> écrit : >> >>> Hi All, >>> >>> so for stereo, I have >>> process(x1,x2) = x1,x2; >>> >>> How would I use 'par' in 'process' for N-channel operation? >>> >>> (I need the inputs x1, x2, xN later in a function.) >>> >>> Maybe a list with N entries? >>> >>> Thanks, Klaus >>> >>> >>> _______________________________________________ >>> Faudiostream-users mailing list >>> Faudiostream-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/faudiostream-users >>> >> > > _______________________________________________ > Faudiostream-users mailing > listFaudiostream-users@lists.sourceforge.nethttps://lists.sourceforge.net/lists/listinfo/faudiostream-users > > _______________________________________________ > Faudiostream-users mailing list > Faudiostream-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/faudiostream-users >
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