DPW3Tri Triangle via 3rd order differerentiated polynomial waveform

DPW3Tri.ar(freq, mul, add )

Distortion creeps in for changes at low frequencies when under 200Hz. But very clean above that.

See also: DPW4Saw, BlitB3Tri

//distortion creeps in under 200Hz

{ DPW3Tri.ar(XLine.kr(2000, 20, 10)) }.play; 

//very fast sweeps can have transient distortion effects

{ DPW3Tri.ar(MouseX.kr(200,12000,'exponential')) }.play;

//compare:

{LFTri.ar(MouseX.kr(200,12000,'exponential'))}.play

//less efficient than LFTri

{ Mix(DPW3Tri.ar(Array.rand(10,50,5000))*0.1) }.play;

{ Mix(LFTri.ar(Array.rand(10,50,5000))*0.1) }.play;

//triangle is integration of square wave; warning loud, not so kind 

{Integrator.ar(Pulse.ar(MouseX.kr(440,8800),0.5),0.99)}.play

//differentiation of triangle is square

{HPZ1.ar(2.0*DPW3Tri.ar(MouseX.kr(440,8800)))}.play

//compare

{Pulse.ar(MouseX.kr(440,8800),0.5)}.play