1class:: LFPar 2summary:: Parabolic oscillator 3related:: Classes/LFCub, Classes/LFPulse, Classes/LFSaw, Classes/LFTri 4categories:: UGens>Generators>Deterministic 5 6 7Description:: 8 9A sine-like shape made of two parabolas and the integral of a triangular wave. It has audible odd harmonics and is non-band-limited. 10Output ranges from -1 to +1. 11 12classmethods:: 13 14method::ar, kr 15 16argument::freq 17Frequency in Hertz. 18 19argument::iphase 20 21Initial phase in cycles ( 0..1 ). 22 23 24argument::mul 25Output will be multiplied by this value. 26 27argument::add 28This value will be added to the output. 29 30Examples:: 31 32code:: 33// a plot 34{ LFPar.ar(Line.kr(100, 800, 0.1)) }.plot(0.1); 35 36// 440 Hz wave 37{ LFPar.ar(440) * 0.1 }.play; 38 39// modulating frequency: 40{ LFPar.ar(XLine.kr(100, 2000, 10)) * 0.1 }.play; 41 42// amplitude modulation: 43{ LFPar.kr(XLine.kr(1, 200, 10)) * SinOsc.ar(440) * 0.1 }.play; 44 45// used as both Oscillator and LFO: 46{ LFPar.ar(LFPar.kr(3, 0.3, 200, 400)) * 0.1 }.play; 47 48// used as phase modulator (behaves like a triangular modulator in FM): 49// Compare: 50{SinOsc.ar(440, LFPar.ar(1, 2, mul: 8pi))}.play 51{SinOsc.ar(440 + LFTri.ar(1, mul: 8pi))}.play 52 53 54// more examples: 55 56{ LFPar.ar(LFPar.kr(LFPar.kr(0.2,0,8,10), 0, 400,800),0,0.1) }.play 57{ LFPar.ar(LFPar.kr(0.2, 0, 400,800),0,0.1) }.play 58{ LFPar.ar(800,0,0.1) }.play 59{ LFPar.ar(XLine.kr(100,8000,30),0,0.1) }.play 60 61 62// compare: 63 64{ LFCub.ar(LFCub.kr(LFCub.kr(0.2,0,8,10),0, 400,800),0,0.1) }.play 65{ LFCub.ar(LFCub.kr(0.2, 0, 400,800),0,0.1) }.play 66{ LFCub.ar(800,0,0.1) }.play 67{ LFCub.ar(XLine.kr(100,8000,30),0,0.1) }.play 68 69{ SinOsc.ar(SinOsc.kr(SinOsc.kr(0.2,0,8,10),0, 400,800),0,0.1) }.play 70{ SinOsc.ar(SinOsc.kr(0.2, 0, 400,800),0,0.1) }.play 71{ SinOsc.ar(800,0,0.1) }.play 72{ SinOsc.ar(XLine.kr(100,8000,30),0,0.1) }.play 73 74{ LFTri.ar(LFTri.kr(LFTri.kr(0.2,0,8,10),0, 400,800),0,0.1) }.play 75{ LFTri.ar(LFTri.kr(0.2, 0, 400,800),0,0.1) }.play 76{ LFTri.ar(800,0,0.1) }.play 77{ LFTri.ar(XLine.kr(100,8000,30),0,0.1) }.play 78:: 79 80