Rationale
A rationale is the mathematical formula upon which the calculations for amplification are made based on the nature of the hearing loss.
The rationales are typically based on experiences from thousands of users and they provide a starting point in the hearing aid fitting, which is based on best clinical practice.
RECD
RECD is short for Real Ear to Coupler Difference, which are correction factors to account for the acoustical differences between a child’s smaller ear canal and that of an adult.
