If you ever heard of post hypnotic suggestion, it's similar. What you are experiencing is the power of suggestion, that you read something that is close to how a noise is made, then you "hear" the noise make the form of the sound. I believe, through my research in AP psych on this last year, that it's a vestigial ability, meaning it played a role in cavemen, but lost its purpose. I believe that a long time ago, when we hunted, if a hunter heard a sound, they would remember the sound briefly, but not perfectly, so that if they hear it again, and it's a similar sound, similar meaning it "sounds" exactly like it did before, then they would go after it.
