In this lab you will be looking at how the difference in frequency between two equal amplitude waves affects the combined wave that reaches an observer. In this program, the sine curves you are viewing represent fluctuations in pressure caused by the vibrating speakers (sound waves). Use the timer to determine how many times the sound gets loud and soft per second.

The speed of the waves have been visually slowed down to make the behaviour easier to see.

When you are ready to start the experiment, click on the begin button.