fails to detect the distortion by noise, i.e. the THD by the IEC
standard method is still 0.00% in the first time interval versus
15.50% by the FIHE-based method. From this example, it can be
inferred that in contrast to the method described in the IEC
standard, the FIHE-based method proposed in Section 3.3 can
predict the THD more accurately attributed to taking into account