Table 1
Summary of the key statsistical tests. The first column displays the experimental conditions (baseline, simultaneous and forward masking), metrics obtained (BMLD and BMLDdiff) and the statistical tests (ANOVA and key pairwise comparisons). The second column shows the main factors, and the third column shows the level of significance. See main text for abbreviations.
| Baseline conditions | ||
| ANOVA | Signal phase | p < 0.01 |
| Precursor | p < 0.001 | |
| Signal phase × Precursor | p < 0.05 | |
| Key pairwise comparisons | S0/Sπ thresholds higher with NNP4/NNP8 compared to NoP | p < 0.01 |
| With a NNP4, S0 thresholds higher than Sπ |
p < 0.01 |
|
| Experimental condition | ||
| Simultaneous masking | ||
| ANOVA | Signal phase | p < 0.001 |
| Precursor condition | p < 0.001 | |
| Notch width | p < 0.001 | |
| Signal phase × Notch width | p < 0.01 | |
| Signal phase × Precursor condition × Notch width | p < 0.05 | |
| Key pairwise comparisons | Signal (S0/Sπ) thresholds with NoP greater than for NNP4 | p < 0.01 |
| Signal (S0/Sπ) thresholds with NNP4 lower than for NNP8 | p < 0.01 | |
| Signal (S0/Sπ) thresholds with precursor, higher with no-notch masker compared to 400-Hz notched masker |
p < 0.001 |
|
| Experimental condition | ||
| Forward masking | ||
| ANOVA | Signal phase | p < 0.001 |
| Precursor condition | p < 0.001 | |
| Notch width | p < 0.001 | |
| Signal phase × Notch width | p < 0.001 | |
| Precursor condition × Notch width | p < 0.001 | |
| Key pairwise comparisons | Signal S0 thresholds higher than Sπ thresholds | p < 0.001 |
| Signal (S0/Sπ) thresholds with NoP lower than with NNP4/NNP8 | p < 0.05 | |
| Signal (S0/Sπ) thresholds with no-notch masker higher than with 400-Hz notched masker |
p < 0.001 |
|
| BMLD | ||
| ANOVA | Masking condition | p < 0.001 |
| Masker notch width | p < 0.001 | |
| Masking condition × Precursor condition | p < 0.01 | |
| Precursor condition × Notch width | p < 0.01 | |
| Masking condition × Precursor condition × Notch width | p < 0.05 | |
| Key pairwise Comparisons | Larger with simultaneous than forward masking | p < 0.001 |
| Larger with no-notch masker than with 400-Hz notched masker | p < 0.001 | |
| For all precursor conditions: Larger with no-notch masker than with 400-Hz notced masker |
p < 0.01 |
|
| BMLDdiff | ||
| ANOVA | Precursor condition | p < 0.01 |
| Masking condition × Precursor condition | p < 0.05 | |
| Key pairwise comparisons | Larger with NNP4/NNP8 than without a precursor | p < 0.05 |
| Larger with N0P/NNP8 (forward masking compared to simultaneous masking) | p < 0.05 | |
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