###Human: When I am in a silent room, I can hear a low sound from my ears. What is it? ###Assistant: Hi. Hair cells are hearing cells inside the inner ears provided with cilia, and when vibrated, it stimulates auditory impulses. Yes, these cells have a unique sound, and it will not be audible to us. It needs a high technology device to pick it. Tinnitus has a lot of causes. First, you need to perform tympanometry and pure tone audiometry. Show me the results, and then we can diagnose the cause.