Layth  M. Aljfout, 
    Simple and Fast Algorithm for Estimating Total Harmonic Distortion,
    International Journal of Soft Computing,
    Volume 5,Issue 3,
    2010,
    Pages 93-97,
    ISSN 1816-9503,
    ijscomp.2010.93.97,
    (https://makhillpublications.co/view-article.php?doi=ijscomp.2010.93.97)
    Abstract: Now a days, harmonic problems have attracted more attention in engineering systems. Fast, accurate and simple in programming algorithm for estimation of the total harmonic distortion and analysis of the harmonic components in signals is presented in this study. The proposed algorithm is based on Fourier series analysis. Computation of different test examples is carried out using C++ language and showed satisfactory results.
    Keywords: C++ language;Fourier series analysis;harmonic distortion;digital signal processing;algorithm;analysis