Sometimes when in public I don’t want to review cards that have audio. As a workaround I have been using a filtered deck with the following filter:
[sound deck:Default (is:due or is:new)
So when I want to review without sound I first rebuild that filtered deck, and after my session just empty it again. It works nicely with a small caveat: Cards that actually have no audio on them because the affected field is not displayed either in the front nor in the back but whose note contains audio are also excluded. This is for instance the case with language cards where sometimes I check the pronunciation (needs audio) and sometimes the spelling (no audio).
I suspect that there is no way to achieve this, but maybe someone has a suggestion.