Just for context:
Blue Line: Minimum Phase (invertible to negative half plane)
Red line: Non-minimum Phase
Green line: compensation to make the red line minimum phase
I could imagine a planar headphone presenting a minor capacitive load, at sufficiently high sensitivity and sample rate, you might capture that responding to the over/undershoot of an op-amp based driver. Just shooting in the dark here though!
But not at the horizontal scale that is often chosen.
1Hz is fine with 2s per division, 1kHz needs 2 ms per division, or a thousand times what 1Hz needed.
I can essentially make a sine wave appear like a triangle by choosing the horizontale scale too wide.
