A sound installation, in which visitors can listen to various "soundscape" recorded in Yokohama by shining on a miniature model of the city with flashlights. The location of lights on the miniature are detected by a hacked infrared web-camera and a Max/MSP patch, then sounds recorded in the corresponding area are played.
Featured on MAKE Blog
blog.makezine.com/archive/2008/04/made_in_japan_volume_10.html
How to convert a webcam into an infrared camera (in Japanese)
sonasphere.com/blog/?p=235