(
{
        var mod = SinOsc.ar([0.1,0.15,0.2]).range(0,1);
        var sig = LFPulse.ar(1.1).range(1,10);
        var sig2 = LFNoise1.ar(0.08).range(0.99,1.01);
        var saw = LFSaw.ar([10,12,15]*sig*sig2);
        var out = (saw - ((saw>0)*mod)+(mod*0.5));
        Splay.ar(out)*0.1;
}.play;

{
        var mod = SinOsc.ar([0.1,0.15,0.2]).range(0,1);
        var sig = LFPulse.ar(1).range(1,10);
        var sig2 = LFTri.ar(0.1,[0,1,2,3]).range(1,10*sig);
        var sig3 = LFNoise1.ar(0.05).range(0.99,1.01);
        var saw = SinOsc.ar(LFSaw.ar([10,12,15]*sig2*sig3).range(200,300));
        var out = (saw - ((saw>0)*mod)+(mod*0.5));
        Splay.ar(out)*0.1;
}.play
)