The present disclosure is directed systems and methods of sorting print jobs for assignment to a plurality of print service providers. The orifices may be arranged on the support for selective discharge of cleaning gas toward corresponding ones of filter openings disposed in a segment of a partition in the gas filter when the support is proximate that segment. The comparator circuit is coupled to the first speaker and the second speaker to receive an input signal from both the first and second speaker. One estimates light sources and one applies estimated light source information so that at least one first visual data set illuminates at least a second visual data set.