1@prefix dcs: <http://ontologi.es/doap-changeset#> . 2@prefix doap: <http://usefulinc.com/ns/doap#> . 3@prefix foaf: <http://xmlns.com/foaf/0.1/> . 4@prefix lv2: <http://lv2plug.in/ns/lv2core#> . 5@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . 6@prefix time: <http://lv2plug.in/ns/ext/time#> . 7 8<http://lv2plug.in/ns/ext/time> 9 a doap:Project ; 10 doap:name "LV2 Time" ; 11 doap:shortdesc "A vocabulary for describing musical time." ; 12 doap:created "2011-10-05" ; 13 doap:developer <http://drobilla.net/drobilla#me> ; 14 doap:release [ 15 doap:revision "1.6" ; 16 doap:created "2019-02-03" ; 17 doap:file-release <http://lv2plug.in/spec/lv2-1.16.0.tar.bz2> ; 18 dcs:blame <http://drobilla.net/drobilla#me> ; 19 dcs:changeset [ 20 dcs:item [ 21 rdfs:label "Clarify time:beat origin." 22 ] 23 ] 24 ] , [ 25 doap:revision "1.4" ; 26 doap:created "2016-07-31" ; 27 doap:file-release <http://lv2plug.in/spec/lv2-1.14.0.tar.bz2> ; 28 dcs:blame <http://drobilla.net/drobilla#me> ; 29 dcs:changeset [ 30 dcs:item [ 31 rdfs:label "Define LV2_TIME_PREFIX." 32 ] 33 ] 34 ] , [ 35 doap:revision "1.2" ; 36 doap:created "2012-10-14" ; 37 doap:file-release <http://lv2plug.in/spec/lv2-1.2.0.tar.bz2> ; 38 dcs:blame <http://drobilla.net/drobilla#me> ; 39 dcs:changeset [ 40 dcs:item [ 41 rdfs:label "Use consistent label style." 42 ] 43 ] 44 ] , [ 45 doap:revision "1.0" ; 46 doap:created "2012-04-17" ; 47 doap:file-release <http://lv2plug.in/spec/lv2-1.0.0.tar.bz2> ; 48 dcs:blame <http://drobilla.net/drobilla#me> ; 49 dcs:changeset [ 50 dcs:item [ 51 rdfs:label "Initial release." 52 ] 53 ] 54 ] ; 55 lv2:documentation """ 56 57This is a vocabulary for describing a position in time and the speed of time 58passage, in both real and musical terms. 59 60In addition to real time (based on seconds), two units of time are used: 61_frames_ and _beats_. A frame is a numbered quantum of time. Frame time is 62related to real-time by the _frame rate_ or _sample rate_, 63time:framesPerSecond. A beat is a single pulse of musical time. Beat time is 64related to real-time by the _tempo_, time:beatsPerMinute. 65 66Musical time additionally has a _meter_ which describes passage of time in 67terms of musical _bars_. A bar is a higher level grouping of beats. The meter 68describes how many beats are in one bar. 69 70"""^^lv2:Markdown . 71 72time:Position 73 lv2:documentation """ 74 75A point in time and/or the speed at which time is passing. A position is both 76a point and a speed, which precisely defines a time within a timeline. 77 78"""^^lv2:Markdown . 79 80time:Rate 81 lv2:documentation """ 82 83The rate of passage of time in terms of one unit with respect to another. 84 85"""^^lv2:Markdown . 86 87time:beat 88 lv2:documentation """ 89 90This is not the beat within a bar like time:barBeat, but relative to the same 91origin as time:bar and monotonically increases unless the transport is 92repositioned. 93 94"""^^lv2:Markdown . 95 96time:beatUnit 97 lv2:documentation """ 98 99Beat unit, the note value that counts as one beat. This is the bottom number 100in a time signature: 2 for half note, 4 for quarter note, and so on. 101 102"""^^lv2:Markdown . 103 104time:speed 105 lv2:documentation """ 106 107The rate of the progress of time as a fraction of normal speed. For example, a 108rate of 0.0 is stopped, 1.0 is rolling at normal speed, 0.5 is rolling at half 109speed, -1.0 is reverse, and so on. 110 111"""^^lv2:Markdown . 112 113