Thanks a lot for your kindness, in fact I belive that the distortion is somehow related to hearing loss in some frequencies, specially high frequencies, affecting at this time not only some sounds but also the speech frequencies which are giving me the distortion sensation, but this is only my opinion from what have been reading and feeling. I just can't not understand why this is not refected in my audiogram, because my hearing is changing a lot due to the distortion, however the audiogram basically remains the same.I'm sorry @MADMAX, I have never experienced what you are going through. I must admit this does sound a strange situation because your hearing loss does not seem extreme enough to give you these symptoms. I think an MRI is a good idea, best to make sure that nothing is abnormal.
Unfortunately I cannot really suggest anything else? Are you listening to something that could make your hearing like this? Are you on medication that could cause these symptoms? Otherwise I would just try and remain calm, perhaps ask for some anti-depressants/relaxants?
Is your MRI clear? I believe the distortion may not be in the input - the ear, the nerve etc. It may very well be with the brain interpreting the sound. I also hear distortion, or what I believe is my t competing against fans and static noises at the same frequency of my t. My audiogram and OAE tests came back normal, above average. But just had MRI without contrast and hyperintensity came up on the brain. Further investigating that. But the nerve and ear canals on that MRI are clear.
Great news about MRI. I wonder if you need to do the OAE which tests the hair cells.
My MRI showed hyperintensity in the centrum semiovole of the left frontal lobe - an 8mm plus 2 x 2mm right by it. It was an MRI without contrast, which means the hyperintensity is light showing either lesions, tumors, or just incidental white matter etc. Having an MRI with contrast and blood tests to rule stuff out. Very scary. My distortion still exists over frequencies the same as my t. Sounds like my t competes with fans, fridges, traffic, running water etc. I know how upsetting this is. Especially the fluctuation in sounds. Yes, I think seeing a great neurologist who might be familiar with t is the next step for you. For me, I think it is the brain interpreting the sounds, rather than the input of the ear, nerve etc, whether it is to do with the hyperintensity of the left temporal lobe or the central auditory cortex.