I have tinnitus. Sharp sounds above 4 kHz make it WAY worse.
Almost every movie & game have loud sharp, screeching sounds.
I've installed many equalizers, such as APO. They have gradual dampening, so no matter how loud or quiet a sound is, the EQ always dampens the sound with [x]dB. If I dampen >4kHz enough to protect my tinnitus, then human speech becomes almost impossible to hear.
Is there an equalizer out there, which simply "caps" the maximum volume of a certain frequency? I want the program to leave the sound as it is, unmodified, until the volume of the selected frequency band reaches above the "maximum allowed volume". At THAT point, I want the program to step in, and dampen those frequencies.