If it were up to me, phones would all have noise dosimeters built in, with the option to calibrate for cases. If a bar is too loud, you'll not only get a warni

If it were up to me, phones would all have noise dosimeters built in, with the option to calibrate for cases. If a bar is too loud, you'll not only get a warning, you'll get a little countdown timer for how long till permanent damage occurs. And Bluetooth headphones would be hard-locked against ever being able to output a damaging amount of sound, they would track total exposure over 24 hours and run it through a model, reducing level before damage is done. I see absolutely no reason a common consumer item should be able to injure me so easily, when the fix is pure software. Millions of people have probably already been injured at an early age with no idea of the danger and we are basically doing nothing. At the very least Bluetooth should have a calibrated mapping from volume to decibels so that smartphones could accurately assess exposure.