This plugin uses the spectral delete plugin as a base.
Rather than generating a sinc impulse response to filter out frequencies, it generates a hilbert impulse response and rotates the phase of the selected audio by 90 degrees. I also changed the window to Blackman-Harris rather than the standard Blackman window.
I’m still very much a beginner to Nyquist programming, so there’s a good possibility that the program isn’t as optimized or well-coded as it possibly could be. But it works.
Hilbert.ny (1.92 KB)
Nice 
Apart from strange indentation in this function (below), the code looks fine to me.
(defun blackmanHarris (i M)
;; Where: 0 <= i <= M
(+ 0.35875
(* -0.48829 (cos (/ (* 2.0 pi i) M)))
(* 0.14128 (cos (/ (* 4 pi i) M)))
(* -0.01168 (cos (/ (* 6 pi i) M)))))
should be:
(defun blackmanHarris (i M)
;; Where: 0 <= i <= M
(+ 0.35875
(* -0.48829 (cos (/ (* 2.0 pi i) M)))
(* 0.14128 (cos (/ (* 4 pi i) M)))
(* -0.01168 (cos (/ (* 6 pi i) M)))))
I tested the effect by applying it twice to a “square no-alias” Chirp. As expected, the result was (close to) an inversion of the original Chirp.
Ah, I see. It looks like I accidently used a tab indent instead of four spaces there. Good catch.
I’ve only used Hilbert transform to create a psuedo-stereo effect,
(only apply to one track of dual-mono pair).
