(
name: 'perc_gen',
func: {
  |freq, gate|

  var pitchEnv = Env([0, \pitchMultiplier.kr(2.0), 1.0], [0, \pitchDecay.kr(0.01)], [-2]).kr(gate: gate);
  var f = freq * pitchEnv;
  var ff = f * (\fRatio1.kr(1) / \fRatio2.kr(1));
  var mod = SinOsc.ar(ff) * f * \modIndex.kr(0.0);
  var body = SinOsc.ar(f + mod) * \toneGain.kr(1.0);
  var noise = WhiteNoise.ar;
  var noiseEnv = Env([0.0, 1.0, 0.0], [0, \noiseRelease.kr(0.01)], [-2]).kr(gate: gate);
  var tick = LPF.ar(noise * noiseEnv, \noiseFilter.kr(1000)) * \noiseGain.kr(-12.dbamp);
  var sig = Mix([body, tick]);

  sig;
},
useSaturation: true,
saturationSteps: 4,
useEnv: true,
defaults: (attack: 0.01, decay: 0.05, curve: -4),
specs:(
  attack: [0.0, 1.0],
  envCurve: [-6, 6],
  noiseFilter: [80, 20000],
  noiseGain: [0.0, 1.0],
  noiseRelease: [0.01, 2.0],
  pitchDecay: [0.01, 4.0],
  pitchMultiplier: [0.01, 2.0],
  release: [0.01, 2.0],
  toneGain: [0.0, 1.0],
  fRatio1: [1.0, 10.0],
  fRatio2: [1.0, 10.0],
  modIndex: [0.0, 1.0]
)
)