| ["mfcc_8_mean", "mfcc_3_mean", "zcr_mean", "mfcc_0_mean", "rms_mean", "mfcc_39_mean", "mfcc_27_mean", "mfcc_7_mean", "mfcc_13_mean", "mfcc_1_mean", "mfcc_4_mean", "mfcc_6_mean", "rms_std", "mfcc_24_mean", "mfcc_28_mean", "mfcc_19_mean", "mfcc_21_mean", "mfcc_12_mean", "mfcc_38_mean", "mfcc_0_std", "chroma_6_mean", "chroma_4_mean", "spectral_contrast_2_mean", "mfcc_37_mean", "spectral_contrast_4_mean", "mfcc_5_mean", "zcr_std", "mfcc_9_mean", "mfcc_11_mean", "spectral_contrast_5_mean"] |