the sound is a little strange because they are using super expensive mini shotgun mics that mostly pick up the sound directly in front of the camera, most of the mics that are on VXs and other cameras that used to be used in skating pick up all of the sound from all directions.
I'm also sure Ty probably fucked with the audio on the video cuz his style is to overdue the production. I wouldn't be suprised if the whole thing was mastered for some sorta sorround sound feeling.
Also a lot the slow mo and steadi cam stuff was shot using Phantom camera which im pretty sure doesn't have any onboard audio recording, which means the audio came from a B camera or and off board audio recorder which always fucks with your senses when you here audio on a skatevideo that wasn't recorded in the same location as the camera. This happens a lot in the Emerica video cuz they take the audio from the VX footage and put it with all the 16m footage.