Table 2 Proportion of variance of the first four principal components, with acoustic parameters ranked by factor loadings
| Â | PC1 | PC2 | PC3 | PC4 | ||||
|---|---|---|---|---|---|---|---|---|
Proportion of variance (cumulative) | 0.477 (0.477) | 0.155 (0.632) | 0.138 (0.77) | 0.101 (0.871) | ||||
Loading variables | Freq50 | −0.376 | Duration | 0.578 | MinF0 | 0.446 | PulseRate | 0.495 |
Freq25 | −0.372 | Risetime | 0.506 | F0 | 0.385 | PulseNum | 0.358 | |
Freq75 | −0.365 |  |  | MaxF0 | 0.366 |  |  | |
MaxFreq | −0.342 |  |  |  |  |  | ||