Allpassphase — Ultimate & High-Quality

For a 2nd-order all-pass: Phase goes 0° → -360°, with steeper transition near resonance.

Understanding the All-Pass Phase: The Hidden Architect of Audio Signal Processing allpassphase

is a free, open-source audio plugin designed to repeatedly run audio through all-pass filters. This process creates a massive phase shift and intentional phase dispersion without altering the frequency response or volume of the track. For a 2nd-order all-pass: Phase goes 0° →