LFCub

A sine-like oscillator UGen with a shape made of two cubic pieces. It is smoother than LFPar .

===Examples===

// modulating frequency
play { LFPar.ar(XLine.kr(100, 20000, 10)) * 0.1 }

// modulating amplitude
play { LFPar.kr(XLine.kr(1, 200, 10)) * SinOsc.ar(440) * 0.1 }

// used as both oscillator and LFO
play { LFPar.ar(LFPar.kr(LFPar.kr(0.2).mulAdd(8,10)).mulAdd(400,800)) * 0.1 }