@prefix blip: <http://drobilla.net/plugins/blip/> . @prefix dc: <http://purl.org/dc/elements/1.1/> . @prefix doap: <http://usefulinc.com/ns/doap#> . @prefix foaf: <http://xmlns.com/foaf/0.1/> . @prefix lv2: <http://lv2plug.in/ns/lv2core#> . @prefix owl: <http://www.w3.org/2002/07/owl#> . @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . @prefix xsd: <http://www.w3.org/2001/XMLSchema#> . blip:lp4pole lv2:microVersion 0 ; lv2:minorVersion 0 ; lv2:optionalFeature lv2:hardRtCapable ; lv2:port [ lv2:default 0.5 ; lv2:index 0 ; lv2:maximum 0.5 ; lv2:minimum "2.08333e-05"^^xsd:double ; lv2:name "Cutoff Frequency" ; lv2:portProperty <http://lv2plug.in/ns/dev/extportinfo#logarithmic> , lv2:sampleRate ; lv2:symbol "port0" ; a lv2:ControlPort , lv2:InputPort , lv2:Port ] , [ lv2:default 0 ; lv2:index 1 ; lv2:maximum 4 ; lv2:minimum 0 ; lv2:name "Resonance" ; lv2:symbol "port1" ; a lv2:ControlPort , lv2:InputPort , lv2:Port ] , [ lv2:index 2 ; lv2:name "Input" ; lv2:symbol "port2" ; a lv2:AudioPort , lv2:InputPort , lv2:Port ] , [ lv2:index 3 ; lv2:name "Output" ; lv2:symbol "port3" ; a lv2:AudioPort , lv2:OutputPort , lv2:Port ] ; dc:creator "Mike Rawes <mike_rawes[at]yahoo.co.uk>" ; dc:replaces <urn:ladspa:1671> , <urn:ladspa:1672> ; dc:rights "GPL" ; doap:name "4 Pole Resonant Low-Pass Filter" ; lv2:documentation """ <p>Emulates a low pass filter in popular analogue synthesisers. This particular filter is derived from one of <a href="http://www.musicdsp.org/archive.php?classid=3#24">many implementations</a> of the Moog 4 pole filter.</p> """ ; a lv2:Plugin , lv2:LowpassPlugin .