Harmonicism

clean-up: #50

Found more old SuperCollider code laying around... This little lambdoma experiment was based on this Cymatic Music video.

//--8x8 lambdoma matrix
a= [
  1/1, 2/1, 3/1, 4/1, 5/1, 6/1, 7/1, 8/1,

  1/2, 2/2, 3/2, 4/2, 5/2, 6/2, 7/2, 8/2,

  1/3, 2/3, 3/3, 4/3, 5/3, 6/3, 7/3, 8/3,

  1/4, 2/4, 3/4, 4/4, 5/4, 6/4, 7/4, 8/4,

  1/5, 2/5, 3/5, 4/5, 5/5, 6/5, 7/5, 8/5,

  1/6, 2/6, 3/6, 4/6, 5/6, 6/6, 7/6, 8/6,

  1/7, 2/7, 3/7, 4/7, 5/7, 6/7, 7/7, 8/7,

  1/8, 2/8, 3/8, 4/8, 5/8, 6/8, 7/8, 8/8
];

//--simplified
a= {|x| {|y| y+1/(x+1)}.dup(8)}.dup(8).flat;

s.boot
Pbind(\dur, 0.25, \freq, 60.midicps*Pseq(a.at((0,1..7)))).play
Pbind(\dur, 0.25, \freq, 60.midicps*Pseq(a.at((0,8..63)))).play
Pbind(\dur, 0.25, \freq, 60.midicps*Pseq(a.at((8,9..15)))).play
Pbind(\dur, 0.25, \freq, 60.midicps*Pseq(a.at((32,33..39)))).play
Pbind(\dur, 0.25, \freq, 60.midicps*Pseq(a.at((48,49..55)))).play
Pbind(\dur, 0.25, \freq, 60.midicps*Pseq(a.at((56,57..63)))).play

Pbind(\dur, 0.125, \freq, 60.midicps*Pseq(a)).play

//--16x16 lambdoma matrix
b= {|x| {|y| y+1/(x+1)}.dup(16)}.dup(16).flat;
Pbind(\dur, 0.125, \freq, 60.midicps*Pseq(b)).play

Animation Templates

clean-up: #49

Here are some simple programs I wrote for my Audiovisual Programming course at UdK Berlin.

There are three SuperCollider files. They're all very basic and made to be hacked, modified and improved.

chipwave

clean-up: #48

Here's an old port I did of a Pure Data patch called chipwave by Phill Phelps.

Also see the updated Pd version Dan Wilcox made: rc-patches

//after http://www.zenpho.co.uk/chipwave.shtml

s.boot
(
SynthDef(\ioscs, {|out= 0, amp= 0.5, freq= 400, width= 0.25, gate= 1, atk= 0.002, dec= 0, sus= 1, rel= 0.2, ws= #[0, 2, 2, 3, 2, 2, 2, 2, 2], ps= #[0, 12, -12, 0, 7, 0, 7, 0, 7]|
  var e= EnvGen.ar(Env.adsr(atk, dec, sus, rel), gate, amp, doneAction:2);
  var w= Duty.ar(0.025, 0, Dseq(ws));
  var p= Duty.ar(0.025, 0, Dseq(ps));
  var f= freq*p.midiratio;
  var ti= LFTri.ar(f, 0, 0.5, 0.5);
  var sq= LFPulse.ar(f, 0, width*0.5, 2, -1);
  var ns= LFNoise0.ar(f*10);
  var z= Select.ar(w, [DC.ar(0), ti, sq, ns]);
  Out.ar(out, LeakDC.ar(z*e));
}).add;
)

//arp
a= Synth(\ioscs, [\freq, 60.midicps, \amp, 0.5, \width, 0.5]).setn(\ws, #[0, 2, 2, 3, 2, 2, 2, 2, 2], \ps, #[0, 12, -12, 0, 7, 0, 7, 0, 7])
a.release
a= Pbind(\instrument, \ioscs, \midinote, Pseq([60, 60, 70, 60, 65, 63], inf), \amp, 0.5, \dur, 0.25, \width, Pseg(Pseq([0, 1], inf), 5)).play
a.stop

//kick
a= Synth(\ioscs, [\freq, 60.midicps, \amp, 1, \atk, 0.002, \dec, 0, \sus, 1, \rel, 0.3, \width, 0.5]).setn(\ws, #[0, 3, 2, 2, 2, 2, 2, 2, 2], \ps, #[0, 18, -12, 0, 0, -6, -12, -24, -48])
a.release
a= Pbind(\instrument, \ioscs, \midinote, Pseq([40, 48], inf), \amp, 0.5, \rel, 0.3, \legato, 0.3, \dur, 0.5, \width, 0.5, \ws, #[[0, 3, 2, 2, 2, 2, 2, 2, 2]], \ps, #[[0, 18, -12, 0, 0, -6, -12, -24, -48]]).play
a.stop

//snare
a= Synth(\ioscs, [\freq, 60.midicps, \amp, 1, \atk, 0.002, \dec, 0, \sus, 1, \rel, 0.3, \width, 0.5]).setn(\ws, #[0, 3, 2, 3, 3, 3, 3, 3, 3], \ps, #[0, 18, 0, 3, 12, 18, 24, 36, 36])
a.release
a= Pbind(\instrument, \ioscs, \midinote, 70, \amp, Pseq([0, 0.5, 0, 0.25], inf), \rel, 0.3, \dur, 0.5, \width, 0.5, \ws, #[[0, 3, 2, 3, 3, 3, 3, 3, 3]], \ps, #[[0, 18, 0, 3, 12, 18, 24, 36, 36]]).play
a.stop

//bass
a= Synth(\ioscs, [\freq, 60.midicps, \amp, 1, \atk, 0.002, \dec, 0, \sus, 1, \rel, 0.3, \width, 0.5]).setn(\ws, #[0, 1, 1, 1, 1, 1, 1, 1, 1], \ps, #[0, 24, 0, 12, 0, -1, 1, -1, 0])
a.release
a= Pbind(\instrument, \ioscs, \midinote, Pseq([40, 48, 48, 60], inf), \amp, 0.5, \rel, 0.3, \dur, 0.25, \width, 0.5, \ws, #[[0, 1, 1, 1, 1, 1, 1, 1, 1]], \ps, #[[0, 24, 0, 12, 0, -1, 1, -1, 0]]).play
a.stop

(
Ppar([
  Pbind(\instrument, \ioscs, \amp, 0.5, \midinote, Pseq([64, 66, 52], inf), \dur, 0.25),
  Pbind(\instrument, \ioscs, \amp, 0.5, \midinote, Pseq([60, 70], inf), \dur, 0.5),
  Pbind(\instrument, \ioscs, \amp, 0.5, \midinote, 100, \dur, 1/3)
]).play;
)

Feedback Synths

clean-up: #47

Today I found some old code in my SuperCollider folder that I thought I'd clean up and publish.

Experiments in audio feedback.

s.boot

(
SynthDef(\feedback1, {|freq= 400, amp= 0.1|
  var env= EnvGen.kr(Env.perc(1, 4), doneAction:2);
  var lin= LocalIn.ar(1);
  var src= SinOsc.ar(freq, lin*2pi, amp*env);
  LocalOut.ar(src);
  Out.ar(0, Pan2.ar(src));
}).add;
)
Synth(\feedback1)
Synth(\feedback1, [\freq, 300])
Synth(\feedback1, [\freq, 300, \amp, 0.255])

(
SynthDef(\feedback2, {|freq= 400, amp= 0.1, fb= 2, del= 0.1|
  var env= EnvGen.kr(Env.perc(1, 4), doneAction:2);
  var lin= DelayN.ar(LocalIn.ar(1), 1, del);
  var src= SinOsc.ar(freq, lin*2pi*fb, amp)*env;
  LocalOut.ar(src);
  Out.ar(0, Pan2.ar(src));
}).add;
)
Synth(\feedback2)
Synth(\feedback2, [\del, 0.5])
Synth(\feedback2, [\del, 0.01])
Synth(\feedback2, [\del, 0.01, \fb, 3])
Synth(\feedback2, [\freq, 300, \del, 0.1, \fb, 2.5])

(
SynthDef(\feedback3, {|freq= 400, amp= 0.1, fb= 2, del= 0.1, lfo= 1, rate= 2|
  var env= EnvGen.kr(Env.perc(1, 4), doneAction:2);
  var lin= DelayN.ar(LocalIn.ar(1), 1, del);
  var src= SinOsc.ar(freq+SinOsc.ar(rate, 0, lfo), lin*2pi*fb, amp)*env;
  LocalOut.ar(src);
  Out.ar(0, Pan2.ar(src));
}).add;
)
Synth(\feedback3)
Synth(\feedback3, [\del, 0.5])
Synth(\feedback3, [\del, 0.01])
Synth(\feedback3, [\del, 0.01, \fb, 3])
Synth(\feedback3, [\del, 0.01, \fb, 2, \lfo, 15])
Synth(\feedback3, [\del, 0.01, \fb, 3, \lfo, 100, \freq, 100])
Synth(\feedback3, [\del, 0.02, \fb, 3, \lfo, 100, \freq, 100])
Synth(\feedback3, [\del, 0.5, \fb, 201, \lfo, 200, \freq, 200, \rate, 202])
Synth(\feedback3, [\del, 0.5, \fb, 1, \lfo, 200, \freq, 300, \rate, 0.01])

(
SynthDef(\feedback4, {|freq= 400, amp= 0.1, fb= 2, del= 0.1, lfo= 1, rate= 2, cutoff= 500|
  var env= EnvGen.kr(Env.perc(1, 4), doneAction:2);
  var lin= DelayN.ar(HPF.ar(LocalIn.ar(1), cutoff), 1, del);
  var src= SinOsc.ar(freq+SinOsc.ar(rate, 0, lfo), lin*2pi*fb, amp)*env;
  LocalOut.ar(src);
  Out.ar(0, Pan2.ar(src));
}).add;
)
Synth(\feedback4)
Synth(\feedback4, [\del, 0.5])
Synth(\feedback4, [\del, 0.01, \cutoff, 100])
Synth(\feedback4, [\del, 0.01, \fb, 3, \cutoff, 100])
Synth(\feedback4, [\del, 0.01, \fb, 2, \lfo, 15, \cutoff, 100])
Synth(\feedback4, [\del, 0.01, \fb, 3, \lfo, 100, \freq, 100, \cutoff, 100])
Synth(\feedback4, [\del, 0.02, \fb, 3, \lfo, 100, \freq, 100, \cutoff, 100])
Synth(\feedback4, [\del, 0.5, \fb, 201, \lfo, 200, \freq, 200, \rate, 202, \cutoff, 100])
Synth(\feedback4, [\del, 0.5, \fb, 1, \lfo, 200, \freq, 300, \rate, 0.01, \cutoff, 100])

2nd Fluid Simulator in SuperCollider

clean-up: #46

Here's another SuperCollider port of msafluid by Memo Akten. It is very similar to the MSAFluidSolver2D I ported from Java, but this one is from the C++ version (openFrameworks ofxMSAFluid) and has more features and a GUI interface.

Unfortunately, it runs slower than the Java port.

Classes, help files and an example are attached as a zip archive below.

Updates:

• 210525: optimised drawing using the Image class (see demo-2)

Tweets 0220-0225

clean-up: #45

Today I recorded and uploaded my latest six SuperCollider sctweets to my SoundCloud account. They were all recorded using SC 3.7a0 and Audacity for trimming, normalising, adding a quick fade out and exporting.

Recording short sound files of these one-liners help non-sc-users get an idea about what is going on and it's also good for archiving. They make it possible to, in the future when SC 3.7a0 is long gone, go back and listen to what the code did produce.

tweet0220

a=SinOsc;play{RecordBuf.ar(c=InFeedback.ar,b=Buffer.alloc(s,9e4));HPF.ar(a.ar(99,c*6)/9+TGrains.ar(2,a ar:3,b,c+3,2,12),9)}// #SuperCollider

tweet0221

a=SinOsc;play{tanh((c=InFeedback.ar(0,2))+HPF.ar(a.ar(b=1/[5,4],a.ar(a.ar(b*1.1,a.ar(b*2))+a.ar(b*1.4,c,5,4).ceil*99)),9))}// #SuperCollider

tweet0222

a=SinOscFB;play{((c=InFeedback.ar(0,2).lag(b=1/67))+DelayL.ar(HPF.ar(a.ar([99,98]*50.666*a.ar(c+b*b,c),c%2),50),b,b)).tanh}// #SuperCollider

tweet0223

a=LFSaw;play{Splay.ar(BPF.ar(a.ar(f=Duty.ar(a.ar(a.ar(c=3/d=(2..6)))*a.ar(d)/c,0,Dseq(ceil(a ar:d)+d*99,inf))+a.ar(c)),f))}// #SuperCollider

tweet0224

a=SinOsc;play{d=BufRd.ar(2,b=LocalBuf(c=2e5,2).clear,a.ar([2,3]*9)*c,0);BufWr.ar(a.ar(3/[2,3])/3,b,a.ar([99,145]).abs*c);d}// #SuperCollider

tweet0225

a=LFSaw;play{b=(1..8)*99;Splay.ar(CombN.ar(Blip.ar(b/2+a.kr(-8/b,1,99),b/4+a.kr(1/b,1,99))*SinOsc.ar(8/b,a.ar(99/b)))).sin}// #SuperCollider

Fluid Simulator in SuperCollider

clean-up: #44

This is a SuperCollider port of Memo Akten's Processing library MSAFluid. I looked at his MSAFluidSolver2D.java version 1.3.0 and rewrote it for SuperCollider. I also optimised it as much as I could but still it is slow and the framerate is very low. I blame the slow SuperCollider graphics. The fluid system itself should perform ok - it's just the drawing that doesn't live up to be useful.

The good news is that one doesn't need to use the fancy graphics. SuperCollider is anyway made for sound synthesis and the fluid simulator can run and particles can be mapped to sound without displaying anything.

Classes, help files and examples are attached as a zip archive below.

Updates:

• 210525: optimised drawing using the Image class (see demo-2)

Failed Tweet

clean-up: #43

During today's clean-up-of-old-projects I got stuck shrinking an old piece of SuperCollider code down to under 140 characters (sctweet). The shortest I could get it down to was 165 characters. Still, I thought I'd post the results of my efforts here - both if someone has suggestions or if someone wants to study the process. It's the same code, just rewritten over and over to be shorter - using every trick I could think of.

Of course one could imagine other goals than briefness - better sounding or less CPU taxing are two (probably better and more) common goals when optimising code in this manner.

n=Pbind(\tempo,2.5,\freq,Pseq([Pseq([103.8],14),Pseq([82.4],14)],inf),\amp,Pseq([2,1,1,2,2,1,1]/2,inf),\dur, 0.5);Ptpar([0,n,5,Pmul(\dur,2,Pmul(\freq,2,n)),15,Pmul(\freq,3,n),30,Pmul(\freq,3.5,n),80,Pmul(\dur,3,Pmul(\freq,5.035, n)),140,Pmul(\dur,1,Pmul(\freq,8,n))]).play

n=Pbind(\tempo,2.5,f=\freq,Pseq([Pseq([103.8],14),Pseq([82.4],14)],inf),\amp,Pseq([2,1,1,2,2,1,1]/2,inf),d=\dur, 0.5);Ptpar([0,n,5,Pmul(d,2,Pmul(\freq,2,n)),15,Pmul(f,3,n),30,Pmul(f,3.5,n),80,Pmul(d,3,Pmul(f,5.035, n)),140,Pmul(d,1,Pmul(f,8,n))]).play

n=Pbind(\tempo,2.5,f=\freq,Pseq([Pseq([103.8],14),Pseq([82.4],14)],inf),\amp,Pseq([2,1,1,2,2,1,1]/2,inf),d=\dur, 0.5);Ptpar([0,n,5,Pmul(d,2,Pmul(f,2,n)),15,Pmul(f,3,n),30,Pmul(f,3.5,n),80,Pmul(d,3,Pmul(f,5.035, n)),140,Pmul(d,1,Pmul(f,8,n))]).play

n=Pbind(\tempo,2.5,f=\freq,Pseq([Pseq([103.8],14),Pseq([82.4],14)],inf),\amp,Pseq([2,1,1,2,2,1,1]/2,inf),d=\dur, 0.5);Ptpar([0,n,5,Pmul(d,2,Pmul(f,2,n)),15,Pmul(f,3,n),30,Pmul(f,3.5,n),80,Pmul(d,3,Pmul(f,5.035, n)),140,Pmul(f,8,n)]).play

Ptpar([0,n=Pbind(\tempo,2.5,f=\freq,Pstutter(14,Pseq([103.8,82.4],inf)),\amp,Pseq([2,1,1,2,2,1,1]/2,inf),d=\dur,0.5),5,Pmul(d,2,Pmul(f,2,n)),15,Pmul(f,3,n),30,Pmul(f,3.5,n),80,Pmul(d,3,Pmul(f,5.035,n)),140,Pmul(f,8,n)]).play

a={|a,b|Pmul(a,b,n)};Ptpar([0,n=Pbind(\tempo,2.5,f=\freq,Pstutter(14,Pseq([103.8,82.4],99)),\amp,Pseq([2,1,1,2,2,1,1]/2,inf),d=\dur,0.5),5,Pmul(d,2,a.(f,2)),15,a.(f,3),30,a.(f,3.5),80,Pmul(d,3,a.(f,5.035)),140,a.(f,8)]).play

a={|a,b|Pmul(a,b,n)};Ptpar([0,n=Pbind(\tempo,5,f=\freq,Pstutter(14,Pseq([103.8,82.4],99)),\amp,Pseq([2,1,1,2,2,1,1]/2,inf)),10,Pmul(d,2,a.(f,2)),30,a.(f,3),60,a.(f,3.5),160,Pmul(d,3,a.(f,5.035)),280,a.(f,8)]).play

a={|a,b|Pmul(a,b,n)};Ptpar([0,n=Pbind(\tempo,5,f=\freq,Pstutter(14,Pseq([103.8,82.4],99)),\amp,Pseq([2,1,1,2,2,1,1]/2,inf)),10,Pmul(d=\dur,2,a.(f,2)),30,a.(f,3),60,a.(f,3.5),160,Pmul(d,3,a.(f,5.035)),280,a.(f,8)]).play

a={|x|Pmul(f,x,n)};Ptpar([0,n=Pbind(\tempo,5,f=\freq,Pstutter(14,Pseq([103.8,82.4],99)),\amp,Pseq([2,1,1,2,2,1,1]/2,inf)),10,Pmul(d=\dur,2,a.(2)),30,a.(3),60,a.(3.5),160,Pmul(d,3,a.(5.035)),280,a.(8)]).play

a=Pmul(f,_,n);b={|y,x|Pmul(\dur,y,a.(x))};Ptpar([0,n=Pbind(\tempo,5,f=\freq,Pstutter(14,Pseq([103.8,82.4],99)),\amp,Pseq([2,1,1,2,2,1,1]/2,inf)),10,b.(2,2),30,a.(3),60,a.(3.5),160,b.(3,5.035),280,a.(8)]).play

TempoClock.tempo= 1 //need to reset default clock tempo

a=Pmul(f,_,n);b={|y,x|Pmul(d,y,a.(x))};Ptpar([0,n=Pbind(f=\freq,Pstutter(14,Pseq([103.8,82.4],99)),\amp,Pseq([2,1,1,2,2,1,1]/2,inf),d=\dur,0.2),2,b.(2,2),6,a.(3),12,a.(3.5),32,b.(3,5.035),56,a.(8)]).play

a=Pmul(f,_,n);Ptpar([0,n=Pbind(f=\freq,Pstutter(14,Pseq([103.8,82.4],99)),\amp,Pseq([2,1,1,2,2,1,1]/2,inf),d=\dur,0.2),2,Pmul(d,2,a.(2)),6,a.(3),12,a.(3.5),32,Pmul(d,3,a.(5.035)),56,a.(8)]).play

a=Pmul(f,_,n);Ptpar([0,n=Pbind(f=\freq,Pseq([103.8,82.4],99).stutter(14),\amp,Pseq([2,1,1,2,2,1,1]/2,99),d=\dur,0.2),2,Pmul(d,2,a.(2)),6,a.(3),12,a.(3.5),32,Pmul(d,3,a.(5.035)),56,a.(8)]).play

n={|x,y=1|Pbind(\freq,Pseq([103.8,82.4],99).stutter(14)*x,\amp,Pseq([2,1,1,2,2,1,1]/2,99),\dur,y/5)};Ptpar([0,n.(1),2,n.(2,2),6,n.(3),12,n.(3.5),32,n.(5.035,3),56,n.(8)]).play

n={|x,y=1|Pbind(\freq,Pseq([104,82.5] stutter:14,99)*x,\amp,Pseq([2,1,1,2,2,1,1]/2,99),\dur,y/5)};Ptpar([0,n.(1),2,n.(2,2),6,n.(3),12,n.(3.5),32,n.(5.035,3),56,n.(8)]).play

n={|x,y=1|Pbind(\freq,Pseq([104,82.5] stutter:14,99)*x,\amp,Pseq([2,1,1,2,2,1,1]/2,99),\dur,y/5)};Ptpar([0,n.(1),2,n.(2,2),6,n.(3),12,n.(3.5),32,n.(5.04,3),56,n.(8)]).play

a=[0,1,1,2,2,2,6,3,1,12,3.5,1,32,5.04,3,56,8,1];{|i|Pbind(\lag,a[b=i*3],\freq,Pseq([104,82.5] stutter:14,99)*a[b+1],\amp,Pseq([2,1,1,2,2,1,1]/2,99),\dur,a[b+2]/5).play}!6

[0,1,1,2,2,2,6,3,1,12,3.5,1,32,5.04,3,56,8,1].clump(3).do{|x|Pbind(\freq,Pseq([104,82.5] stutter:14,99)*x[1],\amp,Pseq([2,1,1,2,2,1,1]/2,99),\dur,x[2]/5,\lag,x[0]).play}