Would humans hear gravity waves from a binary BH fusion nearby?
As your ear is extremely small compared to the wave length of the gravity waves, remember they travel at the speed of light not the speed of sound. The structures in the ear would not respond, also the ear would change in size (by a  ridiculously small amount) itself, thus nullifying the effect anyway. LIGO works by comparing the light travel time of two laser beams at precise right angles, your ear is not directional like that.