The issue here seems to be verbal. It's not clear that ordinary language has a settled answer to the question whether "sound" refers to the vibration in the air, or to the experience that the vibrations cause. If we fix on the former, then there have been plenty of sounds that never led to any experiences. If we fix on the latter, then sounds and experiences of a certain sort are one and the same thing. But there's no deep fact about which is the "right" way to think of it.
Something else worth keeping in mind: language doesn't map onto the world in any simple, direct way, and in particular we need to be careful about letting the fact that we have the noun "sound" fool us into thinking that there is some thing in the world -- a sound -- whose location (in the head? in the landscape?...) needs to be sorted out.