PV_PhaseShift270 shift phase by 270 degrees

PV_PhaseShift270.ar(buffer)

Shift phase of all bins by 270 degrees.

buffer - fft buffer

Server.internal.boot;

b = Buffer.alloc(Server.internal,2048,1);

c = Buffer.alloc(Server.internal,2048,1);

(

{  arg out=0, bufnum=0;

var in, fft, fft2, shifted;

in = SinOsc.ar(500, 0, 0.4);

fft = FFT(b.bufnum, in);

fft2 = FFT(c.bufnum, in);

shifted = PV_PhaseShift270(fft); 

Out.ar(0,  [IFFT(fft2), IFFT(shifted)]);  

}.scope

)