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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 opts: <http://lv2plug.in/ns/ext/options#> .
+@prefix urid: <http://lv2plug.in/ns/ext/urid#> .
+@prefix units: <http://lv2plug.in/ns/extensions/units#> .
+
+blop:dahdsr
+	a lv2:Plugin ,
+		lv2:EnvelopePlugin ;
+	lv2:project blop: ;
+	lv2:symbol "dahdsr" ;
+	lv2:microVersion 0 ;
+	lv2:minorVersion 0 ;
+	lv2:extensionData opts: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:CVPort ,
+			lv2:InputPort ;
+		lv2:index 1 ;
+		lv2:name "Trigger" ;
+		lv2:portProperty lv2:toggled ,
+			<http://lv2plug.in/ns/ext/port-props#trigger> ;
+		lv2:symbol "trigger"
+	] , [
+		a lv2:ControlPort ,
+			lv2:InputPort ,
+			morph:MorphPort ;
+		lv2:default 0 ;
+		lv2:index 2 ;
+		lv2:minimum 0 ;
+		lv2:name "Delay Time" ;
+		lv2:symbol "delay" ;
+		morph:supportsType lv2:CVPort ;
+		units:unit units:s
+	] , [
+		a lv2:ControlPort ,
+			lv2:InputPort ,
+			morph:MorphPort ;
+		lv2:default 0 ;
+		lv2:index 3 ;
+		lv2:minimum 0 ;
+		lv2:name "Attack Time" ;
+		lv2:symbol "attack" ;
+		morph:supportsType lv2:CVPort ;
+		units:unit units:s
+	] , [
+		a lv2:ControlPort ,
+			lv2:InputPort ,
+			morph:MorphPort ;
+		lv2:default 0 ;
+		lv2:index 4 ;
+		lv2:minimum 0 ;
+		lv2:name "Hold Time" ;
+		lv2:symbol "hold" ;
+		morph:supportsType lv2:CVPort ;
+		units:unit units:s
+	] , [
+		a lv2:ControlPort ,
+			lv2:InputPort ,
+			morph:MorphPort ;
+		lv2:default 0 ;
+		lv2:index 5 ;
+		lv2:minimum 0 ;
+		lv2:name "Decay Time" ;
+		lv2:symbol "decay" ;
+		morph:supportsType lv2:CVPort ;
+		units:unit units:s
+	] , [
+		a lv2:ControlPort ,
+			lv2:InputPort ,
+			morph:MorphPort ;
+		lv2:default 1 ;
+		lv2:index 6 ;
+		lv2:maximum 1 ;
+		lv2:minimum 0 ;
+		lv2:name "Sustain Level" ;
+		lv2:symbol "sustain" ;
+		morph:supportsType lv2:CVPort
+	] , [
+		a lv2:ControlPort ,
+			lv2:InputPort ,
+			morph:MorphPort ;
+		lv2:default 0 ;
+		lv2:index 7 ;
+		lv2:minimum 0 ;
+		lv2:name "Release Time" ;
+		lv2:symbol "release" ;
+		morph:supportsType lv2:CVPort ;
+		units:unit units:s
+	] , [
+		a lv2:CVPort ,
+			lv2:OutputPort ;
+		lv2:index 8 ;
+		lv2:name "Envelope Out" ;
+		lv2:symbol "out"
+	] ;
+	dct:replaces <urn:ladspa:2021> ,
+		<urn:ladspa:2022> ,
+		<urn:ladspa:2038> ;
+	doap:name "Retriggerable DAHDSR Envelope" ;
+	lv2:documentation """
+<p>Generates a DAHDSR (Delay, Attack, Hold, Decay, Sustain, Release)
+envelope.</p>
+
+<p>Another envelope generator, this time with two additional stages - Delay,
+which delays the onset of the Attack stage, and Hold, which holds the output at
+maximum before the Decay stage begins.</p>
+
+<p>Triggering works in subtly different ways to the <a href="#adsr_gnt">ADSR
+(1680)</a> - the Trigger will restart the envelope even if the Gate is closed -
+the effect of this is to proceed through the stages and begin the release stage
+immediately after the decay stage.</p>
+
+<p>The final variant (ID 2038) uses control-rate gate and trigger, which is a
+little less CPU hungry, but will cause timing errors that are dependent on the
+block size being used by the host.</p>
+""" .