Table 4.
Intra-rater differences across 10 trials.
| Acoustic parameter | Number of listeners out of 39 with significant trends of variation across 10 trials | Chi-square test for intra-rater variation across 10 trials |
|
|---|---|---|---|
| Chi-square (p-value) | Effect size (w) | ||
| Duration | 5 | 1.47 (0.23) | 0.19 |
| Average pitch (f0) | 7 | 3.22 (0.07) | 0.29 |
| Max pitch (f0) | 7 | 3.22 (0.07) | 0.29 |
| Max amplitude (RMS) | 8 | 4.22 (0.04) | 0.33 |
| Spectral ratio | 6 | 2.30 (0.13) | 0.24 |
| Spectral mean | 6 | 2.30 (0.13) | 0.24 |
| Spectral dispersion (SD) | 4 | 4.11 (0.04) | 0.32 |
| Periodicity | 9 | 5.28 (0.02) | 0.37 |
| Number of regimes | 10 | 6.40 (0.01) | 0.41 |
Column 2: Number of listeners out of 39 who showed a significant trend by Cox and Stuart tests, changing correlations between distress ratings and acoustic parameters across 10 trial blocks. Column 3: p-values from chi-square tests indicating significance levels for intra-rater variation across 10 trial blocks in the degree to which their distress ratings correlated with each acoustic parameter. df = 1, N = 39. Column 4: effect sizes (w) from chi-square tests indicating the magnitude of effects.