Glossary Term

Total Harmonic Distortion (THD)

Information on Total Harmonic Distortion (THD) Last Updated: 11.08.07

Refers to a device adding harmonics that were not in the original signal. For example: a device that is fed a 20Hz sine wave that is also putting out 40Hz, 80Hz etc. Not usually a factor in most modern electronics, but still a significant design problem in loudspeakers.

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