This project simulates sound wave interference. There is one speaker at each end. Each of these speakers is powered by an independent sinusoidal signal generator. The model shows the two waves crossing each other along with the sum of their amplitudes. The two free ends can also be anchored to show standing waves.

For detailed instructions on using the program, take a look at the info window from the Speakers-Twodriveforces model.

Download the StarLogoT source code for the Speakers-Twodriveforces model:
Download speakerstwo

To run this file you need StarLogoT2002 for the Macintosh.
(download StarLogoT)

Click on one of the pictures to see a quicktime movie of the model:
Click on the left-hand icon for a Quick-Time movie and the right-hand icon for a typical plot of wave amplitudes.