Table 5.
Cross-domain feature relevance for valence: top features ranked by absolute correlation (r) for single domain, and CDCC across all three domains (CDCC3).
| Rank | LLD | Functional |
r |
CDCC3 | ||
|---|---|---|---|---|---|---|
| Sound | Music | Speech | ||||
| SOUND FEATURES | ||||||
| 1 | Loudness | Quartile 3 | –0.31** | 0.27** | –0.21** | –0.09 |
| 2 | Loudness | Rise time | –0.30** | –0.21** | –0.04− | 0.10 |
| 3 | Loudness | R.q. mean | –0.29** | 0.29** | –0.23** | –0.10 |
| 10 | Spectral flux | Skewness | 0.27** | –0.13** | 0.11− | –0.04 |
| SPEECH FEATURES | ||||||
| 1 | F0 | Quartile 2 | 0.05− | –0.07− | –0.31** | –0.01 |
| 2 | Energy 1–4 kHz | Arith. mean | –0.17− | 0.23** | –0.31** | –0.07 |
| 4 | Δ Energy 1–4 kHz | Arith. mean | –0.08− | 0.26** | –0.30** | –0.09 |
| 10 | F0 | Quartile 1 | 0.07− | –0.14** | –0.29** | 0.00 |
| MUSIC FEATURES | ||||||
| 1 | Δ Loudness | Mean peak dist. | –0.02− | –0.65** | –0.03− | 0.02 |
| 2 | Loudness | Mean peak dist. | –0.12− | –0.65** | –0.04− | 0.06 |
| 3 | MFCC 1 | Quartile 2 | –0.04− | –0.61** | 0.24** | –0.08 |
| 9 | Spectral ent. | Mean peak dist. | 0.05− | –0.57** | 0.04− | –0.02 |
| CROSS-DOMAIN FEATURES | ||||||
| 1 | Spect. centroid | Rise time | –0.13− | –0.16** | –0.12− | 0.12 |
| 2 | Psy. sharpness | Rise time | –0.13− | –0.16** | –0.12− | 0.12 |
| 5 | Energy 250–650 Hz | IQR 1–3 | –0.14− | –0.11** | –0.15* | 0.12 |
| 6 | MFCC 13 | IQR 1–3 | –0.08− | –0.20** | –0.18** | 0.12 |
Significance denoted by **p < 0.001, *p < 0.01, op < 0.05), −p ≥ 0.05; Bonferroni corrected p-values from two-sided paired sample t-tests.