This isn’t encouraging:
" About the Hearing Aid Self-Fitting and Adjusting [DIY] category "
Lead line:
** The team at Hearing Tracker recommends that you do not attempt to fit or adjust your own hearing aids.
As the only means of tweaking available to me are ephemeral (the apps for each), they don’t persist, even if I should manage to hit on a solution per frequency range…
I’ll ask my audiologist about the taping hack, but wonder how it’s actually done, as these are pretty small pieces of kit, and the mic openings even smaller…