Optimized use of Wavelet Packet Trees for the analysis of electrical waveforms Ileana-Diana V.D. Nicolae, Petre-Marian T. Nicolae, Daniel C. Cîrstea and Ilie A. Gheorghe ITM Web Conf., 49 (2022) 01006 Published online: 16 November 2022 DOI: 10.1051/itmconf/20224901006