“…The Power Spectrum Density approach, which is used in the article's frequency domain feature extraction, is a research technique [33,34,35],Band Power technique [36,24,37]. The analytical method that combines time-domain and frequency-domain research is known as time-frequency analysis [28]. The article uses the Wavelet approach [38,39,22,40,41] and the Fast Fourier Transform method [42,43,44,6,34] for feature extraction via time-frequency analysis.…”