Measurement of harmonic distortion present in a signal defined as the sum of the powers of all harmonic components to the power of the fundamental frequency. (https://en.wikipedia.org/wiki/Total_harmonic_distortion)
Measurement of harmonic distortion present in a signal defined as the sum of the powers of all harmonic components to the power of the fundamental frequency. (https://en.wikipedia.org/wiki/Total_harmonic_distortion) (en)