added bunch of comments to 2021-01-24-acid-funk

2021-01-24-acid-funk-elektro.scd

@@ -1,85 +1,141 @@
 ( fork {
 
+// acid bass synthdef
 SynthDef(\bz, {
 	arg gate=1, freq=440, amp=0.1, cutoff=1000, rq=0.1;
 	var snd, env, cutoffenv;
 
+	// slight detuning into stereo. will cause channel expansion later.
 	freq = [freq, freq * 1.02];
 
-	// enveloping cutoff frequency of the LP filter!!!!
+	// amplitude envelope. doneAction:2 frees the synth at the end of env.
+	env = EnvGen.ar(
+		envelope: Env.adsr(0.01, 0.1, 0.5, 0.5),
+		gate: gate,
+		doneAction:2 );
+
+	// main oscilation - sawtooth wave and squarewave
+	snd = Pulse.ar(freq);
+	snd = Saw.ar(freq * 0.98) + (snd * 0.5);
+
+	// add some saturation/distortion
+	snd = snd * 5;
+	snd = snd.softclip;
+
+	// cutoff frequency envelope for low-pass
 	cutoffenv = EnvGen.ar( Env.adsr(decayTime: 0.1,
 		sustainLevel: 0.5, releaseTime:0.5),
 		gate: gate );
 	cutoff = cutoff * cutoffenv;
 	cutoff = cutoff.max(50);
 
-	// enveloping the amplitude and freeing the synth at end!
-	env = EnvGen.ar(
-		envelope: Env.adsr(0.01, 0.1, 0.5, 0.5),
-		gate: gate,
-		doneAction:2 );
-
-	snd = Pulse.ar(freq);
-	snd = Saw.ar(freq * 0.98) + (snd * 0.5);
-	snd = snd * 5;
-	snd = snd.softclip;
-
+	// resonating low-pass filter
 	snd = RLPF.ar(snd, cutoff, rq);
-	snd = Limiter.ar(snd);
+
+	// finalize (low (0.1) rq (high resonance) can cause loud spikes)
+	snd = Limiter.ar(snd); 
 	snd = snd * env * amp;
+
+	// output
 	Out.ar(0, snd);
 }).add;
 
 SynthDef(\hh, {
 	arg amp=0.1, outBus=0, gate=1, sustain;
 	var snd, env;
+
+	// simple noise
 	snd = WhiteNoise.ar;
+
+	// high-pass filter
 	snd = HPF.ar(snd, 2000);
+
+	// amplitude envelope
 	env = EnvGen.ar(Env.perc(0, sustain), doneAction:2);
+
+	// put it together
 	snd = snd * env * amp;
+
+	// output
 	Out.ar(outBus, snd!2);
 }).add;
 
 SynthDef(\snare, {
 	arg amp = 0.2;
 	var snd, env;
+	
+	// Generates noise which results from flipping random bits in a word.
+	// This type of noise has a high RMS level relative to its peak to
+	// peak level. The spectrum is emphasized towards lower frequencies.
+	snd = GrayNoise.ar.dup; 
+
+	// amplitude envelope
 	env = EnvGen.ar(Env([0,1,0], [0.001, 0.2], curve: -4), doneAction:2);
-	snd = GrayNoise.ar.dup;
+
+	// put it together and output
 	snd = snd * env * amp;
 	Out.ar(0, snd);
 }).add;
 
 s.sync;
 
-// patterns
+// bassline pattern // --
 Pbindef(\bzPat,
 	\instrument, \bz,
 	\amp, 0.6,
+
+	// the main rhythmic sequence
 	\dur, Pseq([1/2, 1/4, 1/4] , inf)
-	      * Pseq([Pseq([1, 1/2],20),1/2,1,1/2,1/2], inf),
+	* Pseq([Pseq([1, 1/2],20),1/2,1,1/2,1/2], inf),
+
+	// playing first three notes in a scale
 	\degree, Pseq([0, 1, 2], inf),
+
+	// of minor
 	\scale, Scale.minor,
+
+	// stay in 3rd octave, only occasionaly veer to 2 or 4
 	\octave, Pwrand([2, 3, 4], [0.1, 0.8, 0.1], inf),
+
+	// randomly change length of notes
 	\legato, Pxrand( (1..9) / 10, inf),
-	\cutoff, Prand((1..10) * 190 + 150, inf),
+
+	// Pseg creates segments in time. this is main 2min "composition"
 	\cutoff, Pseq([
 		Pseg([100,8000,500],[20,10], \exp, 1),
 		Pseg([500, 4000, 1000, 8000, 800, 2000, 500], 5, \exp, 1),
 		Pseg([500,8000,100], [10,20], \exp, 1)
 	]),
+
+	// randomly change resonance
 	\rq, Prand((1..9) * 0.1, inf),
+	
 ).play;
 
+
+// high hat pattern // --
 Pbindef(\hhPat,
 	\instrument, \hh,
+
+	// make it ... er.. "human", by variation in amplitude
 	\amp, Prand((2..4) * 0.05, inf),
+
+	// specific number of 8th notes - 1.5 minute
 	\dur, Pseq([1/8], 8 * 60 * 1.5),
-	\legato, Pseq([0.5,0.5,1,0.5],inf),
+
+	// by making third note longer, sounds like closed and open hats
+	\legato, Pseq([0.5, 0.5, 1, 0.5],inf),
 ).play;
 
+
+// snare pattern // --
 Pbindef(\snPat,
 	\instrument, \snare,
+
+	// main rhythm. it's 2 and a quarter note long loopo
 	\dur, Pseq([Rest(1/2), 1/2, Rest(7/8), 3/8 ], inf),
+
+	// fade in and fade out using Pseg(ment)
 	\amp, Pseg([0,0.4,0.4,0] + 0.0001, [15, 60, 15], \exp),
 ).play;