Sine Wave Animation
Here is an animation of a 3 Hz sine wave to help you understand that a waveform represents a changing voltage (or pressure) over time. It is a silent video, so no need to worry about adjusting your playback system.
The animation was done by Anisul Islam Khan and the video is licensed under Creative Commons.
Sine Wave Animation by Robert Willey and Anisul Islam Khan
is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.