A filtering system, medium, and method, including determining whether a size of a splat exceeds a predetermined size, smoothing a boundary of the splat if it is determined that the size of the splat exceeds the predetermined size, and sharpening the boundary of the splat if it is determined that the size of the splat does not exceed the predetermined size. The technical components are produced by a plurality of entities. At least one of the pressure chambers arranged in the corresponding row overlaps the common chamber differently from the other pressure chambers arranged in the corresponding row. Furthermore, the handgrip-holding system provides a business method to encourage return and multiple use of the system. Some proposed beamforming techniques are based on antenna directions with multiple resolutions.