Scan of the actual article -
http://homepage.mac.com/howthedevil/...rland_echo.jpg (face pixellation is mine - faces were shown)
I made a video which is on YouTube in two parts here...
Part 1 -
http://www.youtube.com/watch?v=UPDFIqLoGxQ
Part 2 -
http://www.youtube.com/watch?v=4stf3WFkXOc
...or on Vimeo which is a little better quality...
http://www.vimeo.com/799523