1@prefix doap: <http://usefulinc.com/ns/doap#> . 2@prefix fomp: <http://drobilla.net/plugins/fomp/> . 3@prefix lv2: <http://lv2plug.in/ns/lv2core#> . 4@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . 5@prefix units: <http://lv2plug.in/ns/extensions/units#> . 6 7fomp:mvclpf2 8 a lv2:Plugin , 9 lv2:LowpassPlugin ; 10 doap:name "Moog Low-Pass Filter 2" ; 11 lv2:microVersion 0 ; 12 lv2:minorVersion 2 ; 13 lv2:optionalFeature lv2:hardRTCapable ; 14 lv2:project fomp: ; 15 lv2:port [ 16 a lv2:AudioPort , 17 lv2:InputPort ; 18 lv2:index 0 ; 19 lv2:name "Input" ; 20 lv2:symbol "in" 21 ] , [ 22 a lv2:AudioPort , 23 lv2:OutputPort ; 24 lv2:index 1 ; 25 lv2:name "Output" ; 26 lv2:symbol "out" 27 ] , [ 28 a lv2:CVPort , 29 lv2:InputPort ; 30 lv2:default 0.0 ; 31 lv2:index 2 ; 32 lv2:maximum 1.0 ; 33 lv2:minimum -1.0 ; 34 lv2:name "FM" ; 35 lv2:symbol "fm" ; 36 units:unit units:oct 37 ] , [ 38 a lv2:CVPort , 39 lv2:InputPort ; 40 lv2:default 0.0 ; 41 lv2:index 3 ; 42 lv2:maximum 1.0 ; 43 lv2:minimum -1.0 ; 44 lv2:name "Exp FM" ; 45 lv2:symbol "exp_fm" ; 46 units:unit units:oct 47 ] , [ 48 a lv2:CVPort , 49 lv2:InputPort ; 50 lv2:default 0.0 ; 51 lv2:index 4 ; 52 lv2:maximum 1.0 ; 53 lv2:minimum -1.0 ; 54 lv2:name "Resonance Mod" ; 55 lv2:symbol "res_mod" 56 ] , [ 57 a lv2:ControlPort , 58 lv2:InputPort ; 59 lv2:default 0.0 ; 60 lv2:index 5 ; 61 lv2:maximum 10.0 ; 62 lv2:minimum -60.0 ; 63 lv2:name "Input gain" ; 64 lv2:symbol "in_gain" ; 65 units:unit units:db 66 ] , [ 67 a lv2:ControlPort , 68 lv2:InputPort ; 69 lv2:default 440.0 ; 70 lv2:index 6 ; 71 lv2:maximum 0.5 ; 72 lv2:minimum 0.000030517578 ; 73 lv2:name "Frequency" ; 74 lv2:portProperty <http://lv2plug.in/ns/ext/port-props#logarithmic> , 75 lv2:sampleRate ; 76 lv2:symbol "freq" ; 77 units:unit units:hz 78 ] , [ 79 a lv2:ControlPort , 80 lv2:InputPort ; 81 lv2:default 1.0 ; 82 lv2:index 7 ; 83 lv2:maximum 10.0 ; 84 lv2:minimum 0.0 ; 85 lv2:name "Exp FM gain" ; 86 lv2:symbol "exp_fm_gain" 87 ] , [ 88 a lv2:ControlPort , 89 lv2:InputPort ; 90 lv2:default 0.25 ; 91 lv2:index 8 ; 92 lv2:maximum 1.0 ; 93 lv2:minimum 0.0 ; 94 lv2:name "Resonance" ; 95 lv2:symbol "res" 96 ] , [ 97 a lv2:ControlPort , 98 lv2:InputPort ; 99 lv2:default 1.0 ; 100 lv2:index 9 ; 101 lv2:maximum 1.0 ; 102 lv2:minimum 0.0 ; 103 lv2:name "Resonance gain" ; 104 lv2:symbol "res_gain" 105 ] , [ 106 a lv2:ControlPort , 107 lv2:InputPort ; 108 lv2:default 0.0 ; 109 lv2:index 10 ; 110 lv2:maximum 15.0 ; 111 lv2:minimum -15.0 ; 112 lv2:name "Output gain" ; 113 lv2:symbol "out_gain" ; 114 units:unit units:db 115 ] ; 116 rdfs:comment "Uses five non-linear elements, in the input and in all four filter sections. It works by using the derivative of the nonlinearity (for which 1 / (1 + x * x) is reasonable approximation). The main advantage of this is that only one evaluation of the non-linear function is required for each section. The four variables that contain the filter state (c1...c4) represent not the voltage on the capacitors (as in the first filter) but the current flowing in the resistive part." . 117