Audio Signal Processing, Machine Learning, Spectrogram.
values are in these arrays. cat_20[:25] Output: array([-0.02869544, -0.03226709, -0.02647833, -0.02724418, -0.02664405, -0.02373683, -0.02506031, -0.02607695, -0.02617143, -0.02862327, -0.03005172, -0.03034695, -0.03152664, -0.03144585, -0.03056201, -0.03005065, -0.02873663, -0.02774573,