Doug Coulter (2000). Digital Audio Processing, p.293. ISBN0-87930-566-5. "Any non-linearity produces harmonics as well as sum and difference frequencies between the original components."
"Glossary of Guitar Terms"Archived 2007-11-15 at the Wayback Machine, Mel Bay Publications, Inc. "A chord consisting of the first (root), fifth and eighth degree (octave) of the scale. Power chords are typically used in playing rock music."
"Glossary of Guitar Terms"Archived 2007-11-15 at the Wayback Machine, Mel Bay Publications, Inc. "A chord consisting of the first (root), fifth and eighth degree (octave) of the scale. Power chords are typically used in playing rock music."
