DSL v5 Patient Preferences

Fitting Formula Options customizes audiometric and real ear data for fittings using the DSL v5 fitting formula. Pro Fit allows input of thresholds using either Audiometry or ABR data and allows input of custom Real-Ear-to-Coupler Difference (RECD) and Real Ear Unaided Gain (REUG) data.

REM Target MatchREM Target Match

1. Connect and select the desired hearing aid(s) to adjust via Connect.

   Note:  If custom DSL v5 data was entered during a previous fitting session, click Retrieve Session to retrieve the session and use the custom data in the fitting. If 'Connect' is selected, the Average RECD and REUG will be used in the fitting and the custom DSL v5 data will not be available.

2. Click Connect.
3. Select fitting formula DSL v5 on the Pro Fit Toolbar if not currently selected.

   Note:  'DSL v5' is only available if the patient's audiogram has at least two thresholds between 250 and 6000 Hz.

4. Click to the right of DSL v5 on the Pro Fit Toolbar to access.
5. Check Apply Changes Binaurally to apply changes to both hearing aids if applicable.
6. Select the Audiometry type from the drop-down list.

   Note:  The Audiometry type selected via Target Preferences automatically defaults.

7. Check or uncheck ABR to enable or disable the reinterpretation of air-conduction thresholds as ABR thresholds, if desired.

   Note:  The ABR option selected via Target Preferences automatically defaults. This checkbox is only available if audiometry type Insert Headphone or Insert Earmold was selected.

8. Click the nHL or eHL radio button to select the desired ABR units.

   Note:  These buttons are only enabled if ABR is checked. The nHL/eHL option selected via Target Preferences automatically defaults. If nHL is selected, the nHL-to-eHL conversion is shown. This conversion cannot be changed via this screen but must be changed via Target Preferences.

9. Select the RECD type from the drop-down list.

   Note:  If the hearing aid supports REM Target Match and measured data has been stored in the device, the type REM Target Match will be available. Selecting Average results in using predicted RECD values. These predicted values are displayed but cannot be modified. Selection of a type other than Average or REM Target Match indicates that custom RECD data is to be entered, with the data corresponding to the selected coupler/ear transducer combination. Custom RECD data will be used during the assessment to determine air-conduction thresholds (and hence REAR targets) when the RECD selection ear-coupling component and the audiometry transducer are consistent for the given style (i.e., Earmold and Insert-Earmold, or Foam Plug and Insert-Headphone). Custom RECD will be used during verification to determine 2cc targets when the RECD selection ear-coupling component and hearing aid style are consistent (i.e., Earmold and BTE with earhook, Foam Plug otherwise). The most accurate targets will result when custom data at all frequencies is entered (the more frequencies, the better).

10. Enter custom RECD data per ear side if applicable.
11. Select the REUG type from the drop-down list.

    Note:  If the hearing aid supports REM Target Match and measured data has been stored in the device, the type REM Target Match will be available. Selecting Average results in using predicted REUG values. These predicted values are displayed but cannot be modified. Selection of a type other than Average or REM Target Match indicates that custom REUG data is to be entered, with the data corresponding to the sound field selection. Custom REUG data will be used during the assessment to determine air-conduction thresholds (and hence REAR targets) when the REUG selection azimuth matches the audiometry transducer azimuth (i.e., Sound Field 0° and Loudspeaker 0°, Sound Field 45° and Loudspeaker 45°, or Sound Field 90° and Loudspeaker 90°). Custom REUG data will be used during verification to determine REUG targets when the REUG selection azimuth is 0° (i.e., Sound Field 0°). The most accurate targets will result when custom data at all frequencies is entered (the more frequencies, the better).

12. Enter custom REUG data per ear side if applicable.
13. Click Update Best Fit All to apply the values on the screen to the targets and perform a Best Fit,is or click Update to apply the values on the screen to the targets but not perform a Best Fit.

    Note:  These buttons are only enabled if a change is made.

    Tip:  Click Cancel to discard the changes or to close the screen.

14. Click File from the Menu Bar and click Save to save the DSL v5 data.

    Note:  If custom DSL v5 data was applied, it's not stored in the hearing aid(s), therefore, if this data is desired to view or retrieve during a later session, you must save the session.