That's also not entirely true people who were born deaf can feel the music vibrating in the floor as there sense of touch is more acute than that of a hearing person. My uncle was born deaf with zero hearing. Zero hearing is actually rare most deaf people have some level of hearing though very little. Flipping lights and stomping is how we have to get his attention sometimes. If he's in a car and a song has a lot of base he will turn the radio down because he doesn't understand that just because the vibration is strong doesn't always mean the music is loud.