Beat Patterns is a simple simulation of two tuning forks, each attached to a resonant wooden box to naturally amplify the sound. When each fork is struck, it emits a certain frequency. The frequency of each fork can be changed by adjusting a metal slider up and down.
If you play both tuning forks at the same frequency, the result is simply a sound that is twice as loud. When you play the tuning forks at slightly different frequencies, watch as the characteristic “WAH-oh-WAH-oh-WAH-oh” sound of beat patterns emerge!