HFSS15: Hearing Aid Compliance Test

Using a toolkit approach, you can test and report the hearing aid compatibility of your designs in HFSS. This involves an easy access to a python script that provides custom GUIs to setup the non-model measurement plane and sweep setup that satisfy the ANSI C63.19 standard. Various reporting mechanisms are created automatically. Reporting mechanisms include field overlay plot and UDD (User Defined Document).

The python script is installed with the software. The script assumes that you have already created the phone model and the appropriate relative coordinate system that defines the location and orientation of the ear piece. You must also assign appropriate boundaries/excitations and any other required design data, such as solution setup.

The python script provides default but customizable UI and canned automations. The UDD format can be adjusted/extended as needed. The default UI is a modal dialog.

This allows us to support changing standards, or multiple standards, without necessarily being tied to the product release cycle. Similarly, users can create new UDD to customize the test report. UDD are saved in project result directory. This type of reports can be created prior to simulation, but will only be populated when there is solution.

Once the measurement plane, sweep setup and various reports are created by the Toolkit script, they become part of the design and users will be able to make modifications. However, that might cause the HAC test to fail compliance with the standard.

The measurement plane will be parameterized based on the variables used in the RCS definition of the ear piece. The measurement plane is a non-model object and the automated UI operations executed by the python script will not invalidate previously simulated results. This means that users can add the HAC analysis at any stage of their design process.