Hello
I had a pure tone hearing test bone conduction Bone air conduction ，Tinnitus detection I don't know how to explain it to you，Because my English is not good, there are errors in the translation.。
I can try to tell you roughly what it means
A therapy machine makes noise，There will be many, many voices，Then find a noise with the closest sound，They will try to mask the treatment with the least amount of noise。
I currently listen to white noise before going to bed，I have tried it for seven days, and the effect has not yet been seen.。
My hearing part is treble drop
Hope it helps you