Verifit
®
User's Guide Version 4.8 © November 2016
14 Insertion Gain
Insertion gain is the difference between aided and unaided ear canal SPL (REIG = REAG - REUG). It inherently
assumes a sound field audiogram. For non-linear hearing aids, REIG is stimulus-dependent and the dependency
is specific to each hearing aid. Insertion gain fitting methods ignore these facts. Speechmap is recommended
for fitting all linear and non-linear hearing instruments.
Refer to On-Ear Measures - Setup and On-Ear Measures Screen Setup for terminology and information on
preparing the system for use and for proper positioning of the client and the probe tube.
Insertion gain in SPL
1. Click the right mouse button and then select [Insertion gain].
2. Click [Instrument] to chose from BTE, ITE, ITC, CIC, CROS, Body. This changes the CORFIG used for 2cc
targets.
3. Click fitting method to chose from FIG6, NAL-NL1, NAL-R, POGO II, Berger, Libby, User, None
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