Abstract The paper deals with the evaluation of the Root Mean Square (RMS) indices of signals with linearly variable magnitude by using Wavelet Packet Transform (WPT) and Fast Fourier Transform (FFT). Firstly there is presented a synthesis of employed techniques and previous results of the authors with respect to synthetically generated singleharmonic signals. The signals … Continuă lectura Evaluating RMS of Linearly Variable Magnitude Waveforms by Using FFT and WPT. Theory and Practice