I tried the YouTube video and was slightly alarmed to discover that I appear to be deaf above about 13.5KHz. I wondered if it might be the frequency response of

I tried the YouTube video and was slightly alarmed to discover that I appear to be deaf above about 13.5KHz. I wondered if it might be the frequency response of my laptop speakers, but according to this site [0] it's pretty flat up to 20KHz. It didn't make the tinitius go away, but perhaps subdued it slightly. Hard to say. But if as one of the other posters suggests tinnitus is a neurological response to lack of input, deafness in higher frequencies tallies. Like others though, jutting my jaw forward makes the tinnitus louder, so not sure how that interaction works for something originated in the brain. Something I haven't seen mentioned here is _very_ occasional short periods (seconds) of apparent deafness, typically at night, in a quiet room, and only when very tired or sleep deprived. I say apparent because since it's quiet, it's hard to know if it's the tinnitus momentarily stopping, or all sound; and the presence of sound may prevent it from happening. [0] https://www.dxomark.com/apple-macbook-air-15-m2-2023/ https://www.dxomark.com/apple-macbook-air-15-m2-2023/