Computers Get a Lesson in the Sound of Water. All sound effects in future racing simulators will be produced in this way.

Quote from THE WIZARD DK :

these are just sound filters. try the Dolby Atmos 3D sound. i can make sounds like this too,just using filters.

No, they are not. The sound is generated by a computer simulation that calculates the physical effects responsible for making the water make its distinctive sound. That is quite interesting although apparently very far from practical use at this point.