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-rw-r--r--lv2/units/units.meta.ttl46
-rw-r--r--lv2/units/units.ttl83
2 files changed, 80 insertions, 49 deletions
diff --git a/lv2/units/units.meta.ttl b/lv2/units/units.meta.ttl
index c55b9de..bb40547 100644
--- a/lv2/units/units.meta.ttl
+++ b/lv2/units/units.meta.ttl
@@ -1,7 +1,9 @@
@prefix dcs: <http://ontologi.es/doap-changeset#> .
@prefix doap: <http://usefulinc.com/ns/doap#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix units: <http://lv2plug.in/ns/extensions/units#> .
<http://lv2plug.in/ns/extensions/units>
a doap:Project ;
@@ -106,5 +108,47 @@
]
] ;
doap:developer <http://plugin.org.uk/swh.xrdf#me> ;
- doap:maintainer <http://drobilla.net/drobilla#me> .
+ doap:maintainer <http://drobilla.net/drobilla#me> ;
+ lv2:documentation """
+
+This is a vocabulary for units typically used for control values in audio
+processing.
+
+For example, to say that a gain control is in decibels:
+
+ :::turtle
+ @prefix units: &lt;http://lv2plug.in/ns/extensions/units#&gt; .
+ @prefix eg: &lt;http://example.org/&gt; .
+
+ eg:plugin lv2:port [
+ a lv2:ControlPort , lv2:InputPort ;
+ lv2:index 0 ;
+ lv2:symbol "gain" ;
+ lv2:name "Gain" ;
+ units:unit units:db
+ ] .
+
+Using the same form, plugins may also specify one-off units inline, to give
+better display hints to hosts:
+
+ :::turtle
+ eg:plugin lv2:port [
+ a lv2:ControlPort , lv2:InputPort ;
+ lv2:index 0 ;
+ lv2:symbol "frob" ;
+ lv2:name "frob level" ;
+ units:unit [
+ a units:Unit ;
+ rdfs:label "frobnication" ;
+ units:symbol "fr" ;
+ units:render "%f f"
+ ]
+ ] .
+
+It is also possible to define conversions between various units, which makes it
+possible for hosts to automatically convert between units where possible. The
+units defined in this extension include conversion definitions where it makes
+sense to do so.
+
+"""^^lv2:Markdown .
diff --git a/lv2/units/units.ttl b/lv2/units/units.ttl
index c81bf22..0f0efe0 100644
--- a/lv2/units/units.ttl
+++ b/lv2/units/units.ttl
@@ -9,53 +9,16 @@
a owl:Ontology ,
lv2:Specification ;
owl:imports <http://lv2plug.in/ns/lv2core> ;
+ rdfs:label "LV2 Units" ;
+ rdfs:comment "Units for LV2 values." ;
rdfs:seeAlso <units.h> ,
- <units.meta.ttl> ;
- lv2:documentation """
-<p>This vocabulary defines a number of units for use in audio processing.</p>
-
-<p>For example, to say that a gain port's value is in decibels (units:db)</p>
-<pre class="turtle-code">
-@prefix units: &lt;http://lv2plug.in/ns/extensions/units#&gt; .
-@prefix eg: &lt;http://example.org/&gt; .
-
-eg:plugin lv2:port [
- a lv2:ControlPort , lv2:InputPort ;
- lv2:index 0 ;
- lv2:symbol "gain" ;
- lv2:name "gain" ;
- units:unit units:db
-] .
-</pre>
-
-<p>Using the same form, plugins may also specify one-off units inline, to give
-better display hints to hosts:</p>
-<pre class="turtle-code">
-eg:plugin lv2:port [
- a lv2:ControlPort , lv2:InputPort ;
- lv2:index 0 ;
- lv2:symbol "frob" ;
- lv2:name "frob level" ;
- units:unit [
- a units:Unit ;
- rdfs:label "frobnication" ;
- units:symbol "fr" ;
- units:render "%f f"
- ]
-] .
-</pre>
-
-<p>It is also possible to define conversions between various units, which makes
-it possible for hosts to automatically and generically convert from a given
-unit to a desired unit. The units defined in this extension include conversion
-definitions where it makes sense to do so.</p>
-""" .
+ <units.meta.ttl> .
units:Unit
a rdfs:Class ,
owl:Class ;
rdfs:label "Unit" ;
- rdfs:comment "A unit for LV2 port data" .
+ rdfs:comment "A unit for a control value." .
units:unit
a rdf:Property ,
@@ -70,7 +33,7 @@ units:render
rdfs:label "unit format string" ;
rdfs:domain units:Unit ;
rdfs:range xsd:string ;
- rdfs:comment """A printf format string for rendering a value (eg. "%f dB").""" .
+ rdfs:comment """A printf format string for rendering a value (e.g., "%f dB").""" .
units:symbol
a rdf:Property ,
@@ -78,7 +41,7 @@ units:symbol
rdfs:label "unit symbol" ;
rdfs:domain units:Unit ;
rdfs:range xsd:string ;
- rdfs:comment "The abbreviated symbol for the unit (e.g. dB)." .
+ rdfs:comment """The abbreviated symbol for this unit (e.g., "dB").""" .
units:Conversion
a rdfs:Class ,
@@ -107,7 +70,7 @@ units:prefixConversion
rdfs:domain units:Unit ;
rdfs:range units:Conversion ;
rdfs:label "prefix conversion" ;
- rdfs:comment "A conversion from this unit to the same unit but with a different SI prefix (e.g. Hz to kHz)." .
+ rdfs:comment "A conversion from this unit to another with the same base but a different prefix." .
units:to
a rdf:Property ,
@@ -131,6 +94,7 @@ units:s
units:to units:min
] ;
rdfs:label "seconds" ;
+ rdfs:comment "Seconds, the SI base unit for time." ;
units:prefixConversion [
units:factor 1000 ;
units:to units:ms
@@ -141,6 +105,7 @@ units:s
units:ms
a units:Unit ;
rdfs:label "milliseconds" ;
+ rdfs:comment "Milliseconds (thousandths of seconds)." ;
units:prefixConversion [
units:factor 0.001 ;
units:to units:s
@@ -155,24 +120,28 @@ units:min
units:to units:s
] ;
rdfs:label "minutes" ;
+ rdfs:comment "Minutes (60s of seconds and 60ths of an hour)." ;
units:render "%f mins" ;
units:symbol "min" .
units:bar
a units:Unit ;
rdfs:label "bars" ;
+ rdfs:comment "Musical bars or measures." ;
units:render "%f bars" ;
units:symbol "bars" .
units:beat
a units:Unit ;
rdfs:label "beats" ;
+ rdfs:comment "Musical beats." ;
units:render "%f beats" ;
units:symbol "beats" .
units:frame
a units:Unit ;
rdfs:label "audio frames" ;
+ rdfs:comment "Audio frames or samples." ;
units:render "%f frames" ;
units:symbol "frames" .
@@ -183,6 +152,7 @@ units:m
units:to units:inch
] ;
rdfs:label "metres" ;
+ rdfs:comment "Metres, the SI base unit for length." ;
units:prefixConversion [
units:factor 100 ;
units:to units:cm
@@ -203,6 +173,7 @@ units:cm
units:to units:inch
] ;
rdfs:label "centimetres" ;
+ rdfs:comment "Centimetres (hundredths of metres)." ;
units:prefixConversion [
units:factor 0.01 ;
units:to units:m
@@ -223,6 +194,7 @@ units:mm
units:to units:inch
] ;
rdfs:label "millimetres" ;
+ rdfs:comment "Millimetres (thousandths of metres)." ;
units:prefixConversion [
units:factor 0.001 ;
units:to units:m
@@ -243,6 +215,7 @@ units:km
units:to units:mile
] ;
rdfs:label "kilometres" ;
+ rdfs:comment "Kilometres (thousands of metres)." ;
units:prefixConversion [
units:factor 1000 ;
units:to units:m
@@ -259,26 +232,29 @@ units:km
units:inch
a units:Unit ;
units:conversion [
- units:factor 2.54 ;
- units:to units:cm
+ units:factor 0.0254 ;
+ units:to units:m
] ;
rdfs:label "inches" ;
+ rdfs:comment "An inch, defined as exactly 0.0254 metres." ;
units:render "%f\"" ;
units:symbol "in" .
units:mile
a units:Unit ;
units:conversion [
- units:factor 1.6093 ;
- units:to units:km
+ units:factor 1609.344 ;
+ units:to units:m
] ;
rdfs:label "miles" ;
+ rdfs:comment "A mile, defined as exactly 1609.344 metres." ;
units:render "%f mi" ;
units:symbol "mi" .
units:db
a units:Unit ;
rdfs:label "decibels" ;
+ rdfs:comment "Decibels, a logarithmic relative unit where 0 is unity." ;
units:render "%f dB" ;
units:symbol "dB" .
@@ -289,6 +265,7 @@ units:pc
units:to units:coef
] ;
rdfs:label "percent" ;
+ rdfs:comment "Percentage, a ratio as a fraction of 100." ;
units:render "%f%%" ;
units:symbol "%" .
@@ -299,12 +276,14 @@ units:coef
units:to units:pc
] ;
rdfs:label "coefficient" ;
+ rdfs:comment "A scale coefficient where 1 is unity, or 100 percent." ;
units:render "* %f" ;
units:symbol "" .
units:hz
a units:Unit ;
rdfs:label "hertz" ;
+ rdfs:comment "Hertz, or inverse seconds, the SI derived unit for frequency." ;
units:prefixConversion [
units:factor 0.001 ;
units:to units:khz
@@ -318,6 +297,7 @@ units:hz
units:khz
a units:Unit ;
rdfs:label "kilohertz" ;
+ rdfs:comment "Kilohertz (thousands of Hertz)." ;
units:prefixConversion [
units:factor 1000 ;
units:to units:hz
@@ -331,6 +311,7 @@ units:khz
units:mhz
a units:Unit ;
rdfs:label "megahertz" ;
+ rdfs:comment "Megahertz (millions of Hertz)." ;
units:prefixConversion [
units:factor 1000000 ;
units:to units:hz
@@ -344,6 +325,7 @@ units:mhz
units:bpm
a units:Unit ;
rdfs:label "beats per minute" ;
+ rdfs:comment "Beats Per Minute (BPM), the standard unit for musical tempo." ;
units:prefixConversion [
units:factor 0.0166666666 ;
units:to units:hz
@@ -358,6 +340,7 @@ units:oct
units:to units:semitone12TET
] ;
rdfs:label "octaves" ;
+ rdfs:comment "Octaves, relative musical pitch where +1 octave doubles the frequency." ;
units:render "%f octaves" ;
units:symbol "oct" .
@@ -368,6 +351,7 @@ units:cent
units:to units:semitone12TET
] ;
rdfs:label "cents" ;
+ rdfs:comment "Cents (hundredths of semitones)." ;
units:render "%f ct" ;
units:symbol "ct" .
@@ -378,18 +362,21 @@ units:semitone12TET
units:to units:oct
] ;
rdfs:label "semitones" ;
+ rdfs:comment "A semitone in the 12-tone equal temperament scale." ;
units:render "%f semi" ;
units:symbol "semi" .
units:degree
a units:Unit ;
rdfs:label "degrees" ;
+ rdfs:comment "An angle where 360 degrees is one full rotation." ;
units:render "%f deg" ;
units:symbol "deg" .
units:midiNote
a units:Unit ;
rdfs:label "MIDI note" ;
+ rdfs:comment "A MIDI note number." ;
units:render "MIDI note %d" ;
units:symbol "note" .