 First of all, humans typically do not auditorily perceive three-dimensional, bounded material objects as such, though it is plausible to think we visually perceive them. Hearing does not resolve the edges, boundaries, and filled volumes in space that I see, and I do not hear audible items to complete spatially behind occluders as do visible surfaces of objects. If perceiving a three-dimensional object requires awareness of its edges, boundaries, and extension, perhaps in order to discriminate it from its surroundings, humans typically do not auditorily perceive such objects.