Please wear headphones, unless your computer sound is off (that's no fun!). Make sure to give the site permission to use microphone input. To replay, just refresh the page. This demo has only been calibrated to work on a 2012 Macbook air. Mirophone noise calibration algorithms may not work on other machines.
Whistle high and low to activate one of the three bars. (It will be yellow). Snap your finger or clap when the blue bars align with the yellow bar.
The first time you click play, it may take a while to load. If nothing is happening refresh the page.