AM waveforms

The WAV files on this page are intended to demonstrate the process of amplitude modulation (AM) at frequencies that humans can experience.

A good way to examine each file is to play it in an application that generates sound and shows the waveform as voltage-over-time. Once such application is Microsoft's Windows Media Player with the Visualization set to Bars and Waves : Scope.

Waveform Frequency File size Duration

Carrier signal 250 Hz 16 kb 4 s

Modulating signal 1 Hz 16 kb 4 s

Mixed signals