Target gain calculations are incorporated into each of the ACAM Systems's fitting strategies. Sound characteristic corrections are not incorporated into the system. This allows the hearing aids to be objectively compared to one another (Figure 224).

Figure 224: Target method, Simulation sub tab

The Target method sub-tab is divided into four sections:

1. Frequency target
2. Dynamic target
3. Combined frequency and dynamic target
4. RECD

Frequency correction procedures were incorporated into the ACAM System for the adjustment of linear hearing aids. The foundation for the target curve calculation is the frequency curve of the measured tone audiogram. The dynamic correction procedures incorporated the speech audiogram; these corrections were used for one channel AGC systems. Current hearing aid technology provides a minimum of two channels which can be adjusted independently; they are fit with "combined procedures" such as DSL or NAL-NL1 whose target values may be determined solely from a tone audiogram (frequency curve + dynamic range). Combined procedures also account for the patient's age, the type of hearing aid being fit, the coupler and transducers used for the fitting. Sometimes the specific earmold data is incorporated into the combined procedure methods. 

The button is available within each section of the Simulations tab. Selecting <Setup> opens up a window titled Simulation presettings, where a variety of parameters can be set and adjusted (Figure 225).

Figure 225: Simulations presettings window

To apply the adjustments selected in the Simulation presettings window, you must select <Transfer to left side settings now> or <Transfer to right side settings now>.  The settings will not be applied until they are transferred to one side.