the purpose of either speech mapping or Rem is verification. That is to ensure you
are getting the correct gain. In other words, In genie- there is a screen where
there is a target gain, so the idea is to see if YOU are receiving the gain theat genie says you are supose to get at eardrum level.
Strictly speaking, the only machine capable of doing speech mapping is the Verifit - speech mapping is a trademark procedure that has ONLY been licence to audio scan.
Speech mapping could be done @ eardrum level or using a 2cc coupler.
Speech mapping is interesting in that it combines output of the hearing aid with
your audiogram(SPL). You can use a speech pasage (soft) you will be able to
determine how much of that speech (soft) is audible - the machine uses a speech index.
You can then go in genie check your soft inputs and increase the gain to maximize
speech inte. index.
Speech mapping only has 2 fittting targets- 1) NAL- NL1 2) DSL 5.0A, agil uses
VAC - therefore when getting the aids mapped it is important to check for audibility.