Table 5.
Features defined for severity classification.
| Description | |
|---|---|
| 1 | Average threshold |
| 2 | Maximum (worst) threshold |
| 3 | Minimum (best) threshold |
| 4 | Average of thresholds in the low range |
| 5 | Maximum (worst) threshold in the low range |
| 6 | Minimum (best) threshold in the low range |
| 7 | Average of thresholds in the mid range |
| 8 | Maximum (worst) threshold in the mid range |
| 9 | Minimum (best) threshold in the mid range |
| 10 | Average of thresholds in the high range |
| 11 | Maximum (worst) threshold in the high range |
| 12 | Minimum (best) threshold in the low range |
| 13 | Maximum (worst) threshold in notch-susceptible frequencies (between 3,000 and 6,000 Hz, inclusively) |
Low range is defined as frequencies below 1,000 Hz, the mid range includes frequencies between 1,000 Hz and 3,000 Hz inclusively, while the high range comprises all frequencies greater or equal to 4,000 Hz.