tangent 2006-11-28 06:42 PM
This is a Genius Invention
Plank + cheap mic = touch sensitive tablet
Some software and cheap microphones is all that is needed to turn a wooden board into a touch sensitive input device. The video is pretty impressive.
[img]http://craphound.com/images/taichisensor.jpg[/img]
Two or more sensors are attached around the edges of the surface. These pinpoint the position of a finger, or another touching object, by tracking minute vibrations. This allows them to create a virtual touchpad, or keyboard, on any table or wall.
Watch the [u][url=http://media.newscientist.com/data/images/ns/av/dn10671A1.wmv]video[/url][/u]
More details on: [url]http://www.newscientisttech.com/article/dn10673-acoustic-sensors-make-surfaces-interactive.html[/url]
Above is excerpted from: [url]http://www.boingboing.net/2006/11/28/plank_cheap_mic_touc.html[/url]
imac 2006-11-30 01:04 AM
怎么也需要个4 line in吧... 普通的single channel 8 bit sampling怎么搞得定...