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- lv2-time.doap.ttl
- time.h - Documentation
- time.ttl
| URI | http://lv2plug.in/ns/ext/time |
|---|---|
| Version | 1.2 (2012-10-14) |
| Prefixes | dcs doap foaf lv2 owl rdf rdfs time xsd |
| Discuss | devel@lists.lv2plug.in (subscribe) |
This is a vocabulary for precisely describing a position in time and the passage of time itself, in both real and musical terms.
In addition to real time (e.g. seconds), two units of time are used:
frames
and beats
. A frame is a numbered quantum of time. Frame
time is related to real-time by the frame rate
or sample rate
,
time:framesPerSecond. A beat is a single pulse of musical time. Beat time is
related to real-time by the tempo
, time:beatsPerMinute.
Musical time additionally has a meter
which describes passage of time
in terms of musical bars
. A bar is a higher level grouping of beats.
The meter describes how many beats are in one bar.
A point in time and/or the speed at which time is passing. A position is both a point and a speed, which precisely defines a time within a timeline.
| In range of | time:position |
|---|
The rate of passage of time in terms of one unit with respect to another.
| Sub-class of | time:Position |
|---|---|
| In domain of | time:beatsPerMinute |
| time:beatsPerBar | |
| time:beatUnit | |
| time:speed | |
| time:framesPerSecond |
A point in time in some unit/dimension.
| Sub-class of | time:Position |
|---|---|
| In domain of | time:frame |
| time:beat | |
| time:bar | |
| time:barBeat |
| OWL Type | Datatype Property |
|---|---|
| Domain | time:Time |
| Range | xsd:double |
Beat unit, the note value that counts as one beat. This is the bottom number in a time signature: 2 for half note, 4 for quarter note, and so on.
| OWL Type | Datatype Property |
|---|---|
| Domain | time:Rate |
| Range | xsd:nonNegativeInteger |
| OWL Type | Object Property |
|---|---|
| Range | time:Position |