( 
SynthDef(\klang_blip, { 
  | out = 0, release = 1, freq1 = 1, freq2 = 5, freq3 = 8, freq_mul = 4, atk_dur = 0.01, amp = #[0.3,0.3,0.3], mod_freq = 25 | 
  var sig = DynKlang.ar(
	  `[([freq1, freq2, freq3].linexp(1,12,1,1140) * freq_mul), amp, nil ], 
	  EnvGen.kr(Env([5,1.05,0.95,0.01],[0.025,release*3/4,release/4])), 
	  150
  ) * LFGauss.kr(mod_freq.reciprocal, 0.3);
  Out.ar(out, (sig/8)!2 * Linen.kr(Impulse.kr(0), atk_dur, 1, release, doneAction:2)) 
}).add;

SynthDef(\dubecho,{|in, out, length = 1, fb = 0.8, sep = 0.012|
	var input = In.ar(in, 2);
	var feedback = LocalIn.ar(2);
	var output = LeakDC.ar(feedback*fb + input);
	output = HPF.ar(output, 400);
	output = LPF.ar(output, 12000);
	output = output.tanh;
	LocalOut.ar(DelayC.ar(output, 1, LFNoise2.ar(12).range([length,length+sep],[length+sep,length])).reverse);
	ReplaceOut.ar(out, output);
}).add;
)

( 
~bus = Bus.audio(s, 2);
~echo = Synth(\dubecho, [\in, ~bus, \length, TempoClock.default.tempo*(3/8), \fb, 0.25, \sep, 0.0012], addAction: \addToTail);

Pbind(*[ 
	instrument: \klang_blip, 
	dur: Pwrand([0.25,0.5,1,0.125], [16,16,1,1].normalizeSum, inf), 
	release: Pkey(\dur),
	freq_mul: Pstutter(Pwrand([1,2,4],[5,3,2].normalizeSum,inf), Pxrand((1..6), inf)),
	freq1: Pstutter(Pxrand((2,4..16), inf), Prand((1..4), inf)), 
	freq2: Pstutter(Pxrand((2,4..16), inf), Prand((4..8), inf)), 
	freq3: Pstutter(Pxrand((2,4..16), inf), Prand((8..12), inf)),
	mod_freq: Pstutter(Pxrand((2,4..16), inf), Pbrown(7,30,3)),
	atk_dur: Pkey(\freq_mul).linlin(12,2,0.01,0.4),
	out: ~bus,
	amp: Pstutter(Pxrand((2,4..16),inf), Pfunc({[2,3,4].normalizeSum.scramble}))
]).play;
)