From [Manipulating Jack/Ladspa Audio processing graphs from Bwise] we know we can generate sequences of "jack-rack" processing racks and automatically connect up their streams with [Jack] audio processing (mainly in Linux, though there is a Windows jack). Here is a start to actually compute something with [Bwise] that makes sense to electrical engineers, namely if there's a signal path within the filtering graph where a certain type of filter runs from input to output (or the converse). So say we have the graph from the page above, we could assign a filtertype to each block, in the simplest case "1" or "2", and lets give the blocks a color which represents their type (for instance type 1=no poles, 2=no zeros, so that we can know if some paths give through DC components or leave high frequencies in peace): <>Bwise