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+@prefix blop: <http://drobilla.net/plugins/blop/> .
+@prefix dct: <http://purl.org/dc/terms/> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
+@prefix morph: <http://lv2plug.in/ns/ext/morph#> .
+@prefix units: <http://lv2plug.in/ns/extensions/units#> .
+@prefix urid: <http://lv2plug.in/ns/ext/urid#> .
+
+blop:tracker
+ a lv2:Plugin ;
+ lv2:project blop: ;
+ lv2:microVersion 0 ;
+ lv2:minorVersion 0 ;
+ lv2:extensionData morph:interface ;
+ lv2:optionalFeature lv2:hardRTCapable ,
+ urid:map ;
+ lv2:port [
+ a lv2:CVPort ,
+ lv2:InputPort ;
+ lv2:index 0 ;
+ lv2:name "Gate" ;
+ lv2:portProperty lv2:toggled ;
+ lv2:symbol "gate"
+ ] , [
+ a lv2:ControlPort ,
+ lv2:InputPort ,
+ morph:MorphPort ;
+ lv2:default 100 ;
+ lv2:index 1 ;
+ lv2:maximum 0.5 ;
+ lv2:minimum 0.00001 ;
+ lv2:name "High Attack Rate" ;
+ lv2:portProperty <http://lv2plug.in/ns/ext/port-props#logarithmic> ,
+ lv2:sampleRate ;
+ lv2:symbol "hattack" ;
+ morph:supportsType lv2:CVPort ;
+ units:unit units:hz
+ ] , [
+ a lv2:ControlPort ,
+ lv2:InputPort ,
+ morph:MorphPort ;
+ lv2:default 100 ;
+ lv2:index 2 ;
+ lv2:maximum 0.5 ;
+ lv2:minimum 0.00001 ;
+ lv2:name "High Decay Rate" ;
+ lv2:portProperty <http://lv2plug.in/ns/ext/port-props#logarithmic> ,
+ lv2:sampleRate ;
+ lv2:symbol "hdecay" ;
+ morph:supportsType lv2:CVPort ;
+ units:unit units:hz
+ ] , [
+ a lv2:ControlPort ,
+ lv2:InputPort ,
+ morph:MorphPort ;
+ lv2:default 100 ;
+ lv2:index 3 ;
+ lv2:maximum 0.5 ;
+ lv2:minimum 0.00001 ;
+ lv2:name "Low Attack Rate" ;
+ lv2:portProperty <http://lv2plug.in/ns/ext/port-props#logarithmic> ,
+ lv2:sampleRate ;
+ lv2:symbol "lattack" ;
+ morph:supportsType lv2:CVPort ;
+ units:unit units:hz
+ ] , [
+ a lv2:ControlPort ,
+ lv2:InputPort ,
+ morph:MorphPort ;
+ lv2:default 100 ;
+ lv2:index 4 ;
+ lv2:maximum 0.5 ;
+ lv2:minimum 0.00001 ;
+ lv2:name "Low Decay Rate" ;
+ lv2:portProperty <http://lv2plug.in/ns/ext/port-props#logarithmic> ,
+ lv2:sampleRate ;
+ lv2:symbol "ldecay" ;
+ morph:supportsType lv2:CVPort ;
+ units:unit units:hz
+ ] , [
+ a lv2:AudioPort ,
+ lv2:InputPort ;
+ lv2:index 5 ;
+ lv2:name "Input" ;
+ lv2:symbol "in"
+ ] , [
+ a lv2:AudioPort ,
+ lv2:OutputPort ;
+ lv2:index 6 ;
+ lv2:name "Output" ;
+ lv2:symbol "out"
+ ] ;
+ dct:replaces <urn:ladspa:2025> ,
+ <urn:ladspa:2026> ;
+ doap:name "Signal Tracker" ;
+ lv2:documentation """
+<p>This tracks an incoming signal and outputs the result.</p>
+<p>The rate controls tell the plugin how quickly to respond to a change in
+input. Low values will mean a slower response - a setting of 0 will hold the
+last value, and a very high value will track the input exactly.</p>
+<p>Attack rate is how quickly an upward change is tracked, and Decay for
+downward changes. There are two pairs of these - the one used depends on the
+level of the Gate.</p>
+<p>Example uses:</p>
+<ul>
+ <li>
+ <em>An envelope tracker</em>- use the &#8216;Gate Low&#8217; track rates with
+ the Gate held low, and run the output through a full-wave rectifier (an ABS()
+ operator) to get an estimate of the level of a signal.</li>
+ <li>
+ <em>Sample and Hold</em>- run a narrow pulse wave into the gate, set the
+ &#8216;Gate High&#8217; rates to maximum, and the &#8216;Gate Low&#8217;
+ rates set to 0.</li>
+ <li>
+ <em>Track and Hold</em>- run a variable pulse wave into the gate, set the
+ &#8216;Gate High&#8217; rates to 0, and the &#8216;Gate Low&#8217; rates set
+ high. Varying the pulsewidth will vary the time the input is tracked, and
+ when it is held.</li>
+</ul>
+""" .