Kay .....
I developed hyperacusis and tinnitus after my first surgery (retrosigmoid) to remove my acoustic neuroma ..... never had either before then. It has remained unchanged since my second surgery (translab). With two audiologists' blessings, I use my custom made musician's earplug in my good ear whenever I am forced to be in an exceptionally noisy environment. The musician's earplug filters out the high frequencies, which triggers the discomfort, and I can still hear the mid-range frequencies. I always use it in conjunction with having my Ponto Pro bone-anchored hearing device on. It actually works very well in those situations. Mind you, I only put the plug in when I really need it so it is far from all of the time.
Unexpected clanking dishes, chip bags, squealing children, etc. still cause me to jump and cringe. I have a pair of ear protector muffs I wear when the blender, vacuum, or mower is going.
Clarice