TABLE 2.
Stimulus types and levels
| Test | Stimulus | Level (dB SPL) | Averaging time (s) |
|---|---|---|---|
| 1 | WBN | 20 | 192 |
| 2 | WBN | 30 | 96 |
| 3 | WBN | 40 | 48 |
| 4 | WBN | 50 | 24 |
| 5 | WBN | 60 | 12 |
| 6 | WBN | 70 | 6 |
| 7 | LSC | 60 | 6 |
Data were collected using wide-band noise (WBN) at levels of 20–70 dB SPL and using a wide-band linear-swept frequency chirp (LSC) at 60 dB SPL. More averaging was done at the lower stimulus levels to mitigate the effect of low SNR. Each test condition was repeated four times for additional SNR boosting. Averaging times are for a single test condition