class:: PV_PhaseShift90 summary:: Shift phase by 90 degrees. related:: Classes/FFT, Classes/IFFT, Classes/PV_PhaseShift, Classes/PV_PhaseShift270, Classes/PV_Diffuser categories:: UGens>FFT Description:: Shift phase of all bins by 90 degrees. classmethods:: method::new argument::buffer FFT buffer. Examples:: code:: s.boot; ( { arg out=0, bufnum=0; var in, fft, fft2, shifted; in = SinOsc.ar(500, 0, 0.1); fft = FFT(LocalBuf(2048), in); fft2 = FFT(LocalBuf(2048), in); shifted = PV_PhaseShift90(fft); Out.ar(0, [IFFT(fft2), IFFT(shifted)]); }.scope ) ::