Sound Wave Interference with Audacity

Concept Overview

1. Standing waves of sound in air
2. Constructive Interference
3. Destructive Interference

Lecturer Instructions

Steps to Follow

1. Press play.
2. Ask students to move their heads from side to side.

Expected Result

There are clear differences in volume where the waves interfere.

Low volume = destructive; high volume = constructive

Note:

Be sure that both projectors have been set to HDMI prior to doing this demo.