Table 7.
Ten highest-ranked features (variable durations).
| Rank | 3 Class | 2 Class Crackles | 2 Class Wheezes |
|---|---|---|---|
| 1 | std_specentropy_128 | min_specbright4ratio_32 | mean_specbright8ratio_16 |
| 2 | std_specskewness_64 | max_speccentroid_128 | std_mfcc5_512 |
| 3 | min_deltamfcc12_64 | min_deltamfcc7_32 | std_melinharm250ms_16 |
| 4 | std_specbright8ratio_64 | min_deltamfcc3_16 | mean_mfcc11_32 |
| 5 | mean_deltamfcc13_512 | median_deltamfcc6_32 | mean_deltamfcc1_64 |
| 6 | median_deltamfcc1_32 | mean_deltamfcc13_64 | std_mfcc5_128 |
| 7 | max_mfcc11_256 | max_mfcc11_64 | std_melinharmHF1s_16 |
| 8 | min_deltamfcc10_256 | mean_specirregularity_512 | min_deltamfcc5_512 |
| 9 | median_deltamfcc10_32 | max_deltamfcc1_256 | std_deltamfcc3_32 |
| 10 | std_mfcc5_16 | max_deltamfcc8_128 | median_deltamfcc5_16 |
min: minimum; max: maximum; std: standard deviation; spec: spectral; mel: melodic; inharm: inharmonicity; HF: high-frequency; rolloffOutRatio: rolloff outlier ratio; rolloffIQRatio: rolloff interquartile ratio; bright8ratio: brightness 800 ratio; bright4ratio: brightness 400 ratio.