Research Article
Slow Cortical Potentials and Amplification—Part II: Acoustic Measures
Table 1
Real-ear insertion gain (REIG) (dB) measured with a hearing aid test system for 20 and 40 dB gain settings.
| Gain setting (dB) | 20 | 40 | Input level (dB SPL) | 50 | 70 | 50 |
| Subject | Analog |
| 1 | 20.40 | 20.70 | 39.90 | 2 | 19.90 | 20.00 | 39.80 | 3 | 20.00 | 19.70 | 39.40 | 4 | 20.00 | 20.70 | 39.70 | 14 | 20.50 | 19.30 | 39.90 |
| Mean | 20.16 | 20.08 | 39.74 | SD | 0.27 | 0.62 | 0.21 |
| Subject | Digital A |
| 1 | 20.30 | 19.80 | 40.40 | 2 | 20.30 | 20.10 | 39.60 | 3 | 19.50 | 19.70 | 39.90 | 4 | 20.10 | 20.30 | 40.30 | 14 | 20.10 | 19.40 | 40.40 |
| Mean | 20.06 | 19.86 | 40.12 | SD | 0.33 | 0.35 | 0.36 |
| Subject | Digital B |
| 1 | 20.10 | 20.00 | 40.10 | 2 | 20.10 | 20.60 | 40.10 | 3 | 19.80 | 19.70 | 40.40 | 4 | 20.00 | 20.10 | 40.10 | 14 | 20.00 | 20.20 | 39.90 |
| Mean | 20.00 | 20.12 | 40.12 | SD | 0.12 | 0.33 | 0.18 |
|
|