TABLE IV.
Summary results for experiment 2. The only significant effect was the increase in JND for 2 kHz–5 kHz when H4–2 kHz was steep (21 dB) vs flat (9 dB).
| Target spectral slope component | Altered adjacent component | Adjacent slope (dB) | JND mean (SD) for target slope (dB) |
|---|---|---|---|
| H1–H2 | H2–H4 | 11.5 | 5.71 (2.16) |
| 2.5 | 6.73 (2.72) | ||
| H2–H4 | H1–H2 | 13.0 | 4.81 (2.03) |
| 1.0 | 4.91 (2.14) | ||
| H4–2 kHz | 21.0 | 5.97 (2.52) | |
| 9.0 | 5.64 (2.61) | ||
| H4–2 kHz | H2–H4 | 11.5 | 4.24 (2.01) |
| 2.5 | 4.41 (2.63) | ||
| 2 kHz–5 kHz | 36.0 | 6.31 (2.51) | |
| 0.0 | 5.29 (2.09) | ||
| 2 kHz–5 kHz | H4–2 kHz | 21.0 | 23.81 (4.02) |
| 0.0 | 14.87 (6.20) |