More than a week ago, I started to hear sounds like electrical signals in my left ear. But these sounds occurred when I hear certain frequencies like the tap water running for example. But if I cover my ear, I don't hear that sound ? I don't know if this is called hyperacusis but as far from my readings hyperacusis is painful? and this sound is not painful but it just break my concentrations? Does anyone know what is it ? Any help ? thanks a lot