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