Hearing aid fitting procedure and processing based on subjective space representation

A hearing assistance apparatus adapted to perform signal processing based on inputs from an input device, comprising:

• a signal processor configured to execute a signal processing algorithm;
• and
• a controller configured to provide a plurality of parameters Z to the signal processing algorithm, the controller configured to receive N-dimensional coordinates from the input device and convert the coordinates into the plurality of parameters Z for the signal processing algorithm, the controller configured to operate in a programming mode and operate in a navigation mode.

A hearing assistance apparatus adapted to perform signal processing based on inputs from an input device, comprising:

• a signal processor configured to execute a signal processing algorithm;
• and
• a controller configured to provide a plurality of parameters Z to the signal processing algorithm, the controller configured to receive N-dimensional coordinates from the input device and convert the coordinates into the plurality of parameters Z for the signal processing algorithm, wherein the controller is configured to operate in a programming mode and configured to receive a subjective organization of predetermined parameter settings and construct the mapping of the coordinates into the plurality of parameters Z using the organization.