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The range of noise levels (LN) producing AM detection thresholds in the targeted range of modulation depths, the mean noise levels, and the mean SNRs, across all listeners
| Carrier level (dB SPL) | 1 kHz | 6 kHz | ||||
|---|---|---|---|---|---|---|
| LN (dB SPL) | Mean (SD) | SNR (dB) | LN (dB SPL) | Mean (SD) | SNR (dB) | |
| 40 | 20.3–32.6 | 26.4 (4.6) | 13.6 | 25.4–31.2 | 28.5 (1.6) | 11.5 |
| 60 | 32.7–46.8 | 39.4 (4.6) | 20.6 | 29.8–39.5 | 33.8 (2.6) | 26.2 |
| 80 | 61.4–74.5 | 67.8 (4.4) | 14.3 | 49.1–67.8 | 57.0 (5.8) | 23.0 |
