https://gitlab.com/lv2/lv2/-/tree/master/plugins/eg-amp.lv2

amp.edn

{:doap/name
 ["Simple Amplifier"
  #lstr "Amplificador Simple@es"
  #lstr "簡単なアンプ@jp"
  #lstr "Einfacher Verstärker@de"
  #lstr "Amplificateur de Base@fr"
  #lstr "简单放大器@zh"
  #lstr "Amplificatore Semplice@it"
  #lstr "Просто Усилитель@ru"
  #lstr "Simple Amplifier@en-gb"],
 :lv2/port
 [{:rdf/type [:lv2/ControlPort :lv2/InputPort],
   :lv2/default 0,
   :lv2/symbol "gain",
   :lv2/name
   ["Gain"
    #lstr "收益@zh"
    #lstr "Guadagno@it"
    #lstr "Gain@en-gb"
    #lstr "Gain@fr"
    #lstr "Увеличение@ru"
    #lstr "Verstärkung@de"
    #lstr "Aumento@es"
    #lstr "利益@jp"],
   :lv2/maximum 24,
   :lv2/scalePoint
   [{:rdf/value -5, :rdfs/label "-5"}
    {:rdf/value -10, :rdfs/label "-10"}
    {:rdf/value 5, :rdfs/label "+5"}
    {:rdf/value 0, :rdfs/label "0"}],
   :lv2/minimum -90,
   :lv2/index 0,
   :units/unit :units/db}
  {:lv2/name "In",
   :lv2/symbol "in",
   :lv2/index 1,
   :rdf/type [:lv2/InputPort :lv2/AudioPort]}
  {:lv2/name "Out",
   :lv2/symbol "out",
   :lv2/index 2,
   :rdf/type [:lv2/OutputPort :lv2/AudioPort]}],
 :doap/license "http://opensource.org/licenses/isc",
 :lv2/project "http://lv2plug.in/ns/lv2",
 :lv2/optionalFeature [:lv2/hardRTCapable],
 :rdf/type [:lv2/AmplifierPlugin :lv2/Plugin]}