The equivalence between time- and frequency-domain analysis of waveforms, and its relationship to THD (Total Harmonic Distortion) is explored here.
The RMS (Root Mean Square) value does contain information regarding the waveform’s harmonic distortion.
Additionally, it is shown – thanks to Parseval’s Theorem – that the RMS value of a waveform can also be calculated by way of the frequency domain.
As harmonics increase, the RMS value of a waveform increases slowly, while the THD increases at a significantly faster rate.
This White Paper Includes: