Distortion

Threshold of distortionAmplitude at which volume starts affecting timbre - volume variations turn into timbre

variations

Dynamic range Distance between noise flour and distortion

Drive

Gain stage before threshold of distortion

e.g guitar

Use distortion musically Intentional use of distortion

Gear can cause distortion

Non linear range of equipment

Mic Too close Not good Needs to be illuminated

Mic preamp Clipping (digital distortion) Not good Needs to be illuminated