Another sufferer here. If I am tired or stressed it’s worse. Mostly I can distract myself but it’s definitely affecting my hearing in the high ranges of sounds now and I know one day I shall have to give in and investigate some aids. However I’ve been cheered by articles which deal with Tinnitus and how aids can be personally set up for the individual to help, and with Bluetooth connections to provide perfect sound from tv, stereo etc., (Think we’d all welcome that with stupid plasma screen tv’s and tiny speakers which face backwards! )
Apparently the brain will sometimes hold on to a constant sound and store the memory and repeat it for some while. An ENT Specialist told me that when I was plagued by the sound of chicken shed fans turning in a heatwave across our fields, .....and then those same wretched fans accompanied me on holiday to mid-Wales, some 150 miles away! ?