In article , Don Pearce wrote:

A capacitor used in audio coupling situation is not required to store
and release charge - which is what is described in this paper. It
charges once when power is applied, and remains in that charged state
until the power is turned off. At that point this effect will occur,
but I don't think we need worry about that.

While passing audio, its charge state does not change - evidenced by
the fact that there is no audio voltage drop across it.

Yes, that is precisely what I was illustrating: the incorrectness of the
use of "pulse smearing" in certain writers' treatises on the effects of
capacitor dielectric absorption in audio circuits.

--
John Phillips