I know it's not quite synesthesia, but I could always hear the boards coming up when skating backwards even though I'm not sure of the mechanism. I wonder how m

I know it's not quite synesthesia, but I could always hear the boards coming up when skating backwards even though I'm not sure of the mechanism. I wonder how much preprocessing goes on before we interpret our senses (is hearing just that good?/can I judge the distance to the opposite boards accurately enough to sub in "hearing" them?/see the reaction from other players?/etc?). edit: I was still kind of a shitty hockey player but I was never surprised by the boards.