The sound of two hands chirping...

The video clip

This is from a long (~50m) cardboard tube installed in the San Francisco Exploratorium (if you're in the neighbourhood, it's well worth a visit!). The tube diameter is big enough to stick your head into, or to stick in this video camera with microphone, as you'll see in the clip below. These clips work best in QuickTime (available free from Apple for Mac and for Win 95/98/NT/ME/2000/XP)

video clip (~9MB)

sound clip:

download sound clip: use popup menu from 'down' arrow in player-icon at right, above, to 'Save Source'; or use right-click mouse button for popup

(or else here's a link you can try to use)

sonogram from sound clip: time is on the x-axis, and frequency on the y-axis; colour indicates intensity

(x,y,z) data from sonograph from sound clip (click here)

Last revised: 11 November 2002 - rsm