class:: PV_Mul
summary:: Complex multiply.
related:: Classes/FFT, Classes/IFFT, Classes/PV_Add, Classes/PV_CopyPhase, Classes/PV_MagMul, Classes/PV_Max, Classes/PV_Min
categories:: UGens>FFT

Description::

Complex Multiplication:

code::

(RealA * RealB) - (ImagA * ImagB),
(ImagA * RealB) + (RealA * ImagB)

::


classmethods::

method::new

argument::bufferA
FFT buffer A.

argument::bufferB
FFT buffer B.

Examples::

code::

s.boot;

(
SynthDef("help-mul", { arg out=0;
	var inA, chainA, inB, chainB, chain ;
	inA = SinOsc.ar(500, 0, 0.5);
	inB =  SinOsc.ar(Line.kr(100, 400, 5), 0, 0.5);
	chainA = FFT(LocalBuf(2048), inA);
	chainB = FFT(LocalBuf(2048), inB);
	chain = PV_Mul(chainA, chainB);
	Out.ar(out,  0.1 * IFFT(chain).dup);
}).play(s);
s.scope;
)

(
SynthDef("help-mul2", { arg out=0;
	var inA, chainA, inB, chainB, chain ;
	inA = SinOsc.ar(500, 0, 0.5) * Line.kr;
	inB = LFNoise1.ar(20);
	chainA = FFT(LocalBuf(2048), inA);
	chainB = FFT(LocalBuf(2048), inB);
	chain = PV_Mul(chainA, chainB);
	Out.ar(out,  0.1 * IFFT(chain).dup);
}).play(s);
s.scope;
)

::