I'm 43, and I hear a very low hum most days, but no all days. It started June of 2021. My hearing tests conclude good hearing, no loss of hearing and clear canals. When I close my left ear the noise is gone. I only hear this noise in my left ear, but of course it's worse at night and this constant sound is like a weak low frequency with breaks in it. Hearing it for more than a hour I begin to feel chest pain, which is odd. My ENT tells me my their testing equipment can't test for the frequency I'm hearing because it doesn't test low enough for the frequency I hear, everything sounds higher in pitch on their devices. Again hearing test is normal, so they say and tell my the dehiscence of ear fibers in my ear canals are in my right ear. No can explain whats happening and telling me I suffer from hearing loss doesn't explain it either, as it stumps the doctors. I don't abuse my ears with excessive noise nor do I not clean them regularly. This is weird. Also, when I drive about a block from my house, the noise fades away. At night it's everywhere.