One very simple yet effective way of modeling sounds, touch, and smell is via the use of spheres. For sounds, for example, we can imagine the center as being the source and the loudness dissipating the farther from the center the listener is. Inversely, the listener can be modeled instead of, or in addition to, the source of the sound. The listener's hearing is represented by a sphere, and the sounds closest to the listener are more likely to be "heard." We can modify the size and position of the sphere relative to our agent to accommodate feeling and smelling.
The following figure represents our sphere and how our agent fits into the setup:
As with sight, the probability of an agent registering ...
