2 summary:: Apply a binary operation to the values of an input UGen
3 related:: Classes/UnaryOpUGen, Classes/BinaryOpFunction, Classes/Pbinop, Overviews/Operators
4 categories:: UGens>Algebraic
7 BinaryOpUGens are created as the result of a binary operator applied to a link::Classes/UGen::.
9 (SinOsc.ar(200) * ClipNoise.ar).dump;
10 (SinOsc.ar(200).thresh(0.5)).dump;
12 The use of the binary operators code::*:: and code::thresh:: above each instantiate a BinaryOpUGen. The operators themselves (which are methods) are not to be confused with the resulting BinaryOpUGen (which is an object). The unary and binary operators are defined in link::Classes/UGen::'s superclass link::Classes/AbstractFunction::, which creates the
13 BinaryOpUGen as a result of the operation.
15 When operating on UGens instead of numbers, what results is not a result of the calculation, but a structure that represents that calculation. For the immediate operations on numbers, see for example link::Classes/SimpleNumber::.
17 See link::Overviews/Operators:: for an overview of common operators.
23 return a new instance that applies the operator code::selector:: to the UGens code::a:: and code::b:: normally, this is implicitly called when applying an operator to a link::Classes/UGen::.
25 The selector symbol for the binary operator
30 returns:: A new instance of BinaryOpUGen
33 private:: init, optimizeGraph, constantFolding
38 a = WhiteNoise.ar; // a WhiteNoise
39 b = a + 2; // a BinaryOpUGen.
45 var a = LFSaw.ar(300);
46 var b = LFSaw.ar(329.1);
52 subsection::The comparison operators
54 The operators code:: >, >=, <, <= :: are particularly useful for triggering. They should not be confused with their use in conditionals. Compare:
57 if(1 > 0) { "1 is greater than 0".postln }; // > returns a boolean
63 // trigger an envelope
67 trig = SinOsc.ar(1) > 0.1;
68 EnvGen.kr(Env.perc, trig, doneAction: 0) * SinOsc.ar(440,0,0.1)
73 See link::Overviews/Operators:: or the implementation of these in link::Classes/AbstractFunction:: for more detail.
75 Since the equality operator ( code::==:: ) is used to distinguish objects including UGens, it cannot be used to create a BinaryOpUGen by application. Instead, to get a trigger value each time two signals are the same (instead of just finding out whether two UGens are the same), one can instantiate a BinaryOpUGen directly:
80 var a = SinOsc.ar(1).round(0.1);
81 var b = SinOsc.ar(1.2).round(0.1);
82 BinaryOpUGen('==', a, b) * 0.1