Tragus

Inprove your aural skills with the Tragus plug-in.

Emphasis: Distortion
Unit of Measurement: %
Level of Difficulty: Medium to Hard

Distortion changes the harmonic content in a signal by adding or amplifying overtones. Sometimes this is done on purpose, usually in vacuum tube circuits, otherwise it's the result of unintended clipping. In either case, you should know how to recognize it.