This is the simplest sound so far in terms of process. I simply created a 0.1 second burst of white noise in supercollider, then I recorded it and brought it into ableton live and applied a delay to it, recorded it, then reversed the recording (made it backwards) then added a different delay, then reversed that and added another and so forth. The result has a nice quality to it that goes beyond how easy it was to get.

There also seems to be some weird phase canceling going on that makes it drop out in weird ways.

Here's the wav.

talk about it here.