I've noticed this, or something very similar (not sure if sites are keeping audio contexts open actually, or if this is Firefox-internal, as it also happens on Youtube and other sites not using the Web Audio API) on macOS a while ago too (i.e. an audio-induced power drain, but no white noise): https://bugzilla.mozilla.org/show_bug.cgi?id=1821102
Right now, coreaudiod on my Mac is at 20% CPU with nothing playing whatsoever :( I'm close to switching to another browser until this is fixed, as it's really ruining battery life for me, but I really don't want to give up Firefox over something seemingly so trivial.
Update: This seems to be a related but different bug.
Right now, coreaudiod on my Mac is at 20% CPU with nothing playing whatsoever :( I'm close to switching to another browser until this is fixed, as it's really ruining battery life for me, but I really don't want to give up Firefox over something seemingly so trivial.
Update: This seems to be a related but different bug.