Audacity 3

Audacity is a free, easy-to-use audio-editing program that works with both the Windows and Mac operating systems. With Audacity we can record our own sounds and music, or we can work with existing audio files. These activities cover: the Audacity interface, controls, and track control panel; importing and playing audio tracks; editing techniques: selection, cut, copy and paste; labeling; amplification and other special effects; trimming, rearranging, and time shifting; noise removal; voice removal; varying tempo, speed, and pitch; normalization, equalization and compressor; recording sound, and overdubbing; creating a music mix and exporting. They also include theory on sound, file formats, sound quality, recording as well as a glossary.
All audio files required for the activities are available as a free download through a link at the end of the activities.