3D audio effects are a group of sound effects that manipulate the sound produced by stereo speakers, surround-sound speakers, speaker-arrays, or headphones. This frequently involves the virtual placement of sound sourcesanywhere in three-dimensional space, including behind, above or below the listener.
"I guess one of the memorable ones was the premiere episode of the last season. We were on the boat, and I remember we were standing there and they had people with buckets of water standing on either side on ladders to make it seem like the waves were crashing on top of us. All of us got absolutely drenched, but we took it in turn. Everybody was standing behind the monitor watching everybody get soaked in slow motion, which was fun." (x)