The document discusses two sound effects used on audio clips. For the first clip, a "Dub Delay" effect was used that adds echo which can be adjusted, and the "In" button makes the sound clearer over the echo. For the second clip, a "glitch effect" was used that has multiple manipulation options and effects like gater, tapestop and stretcher were applied, transforming the original sound into an unrecognizable techno-style audio.