manual/xml/editor_window_timeline.xml

   1 <?xml version="1.0" standalone="no"?>
   2
   3 <!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
   4
   5 ]>
   6
   7 <section id="editor-window-timeline">
   8         <title>Timeline</title>
   9         <para>
  10                 At the top of the track display area is the timeline display. This consists
  11                 of a number of rulers, a meter track, a tempo track and the marker display.
  12         </para>
  13
  14         <para>
  15                 The available rulers include:
  16         </para>
  17
  18         <table id="tbl-rulers">
  19                 <title>Ruler Types</title>
  20                 <tgroup cols = "2">
  21                         <colspec colnum="1" colname="Ruler Type" colwidth="1"/>
  22                         <colspec colnum="2" colname="Description" colwidth= "2"/>
  23                         <thead>
  24                                 <row>
  25                                         <entry>
  26                                                 Ruler Type
  27                                         </entry>
  28                                         <entry>
  29                                                 Description
  30                                         </entry>
  31                                 </row>
  32                         </thead>
  33                         <tbody>
  34                                 <row>
  35                                         <entry>
  36                                                 Frames
  37                                         </entry>
  38                                         <entry>
  39                                                 this ruler measures audio frames. The number of audio frames per second
  40                                                 depends on the sample rate in use.
  41                                         </entry>
  42                                 </row>
  43                                 <row>
  44                                         <entry>
  45                                                 SMPTE
  46                                         </entry>
  47                                         <entry>
  48                                                 this ruler displays SMPTE timecode. The SMPTE format (25fps, 30fps, drop
  49                                                 frame etc) is selected in the Options Editor option_editor.
  50                                         </entry>
  51                                 </row>
  52                                 <row>
  53                                         <entry>
  54                                                 Min:Sec
  55                                         </entry>
  56                                         <entry>
  57                                                 this ruler displays time in minutes+seconds, measured since the start of
  58                                                 the session.
  59                                         </entry>
  60                                 </row>
  61                                 <row>
  62                                         <entry>
  63                                                 BBT
  64                                         </entry>
  65                                         <entry>
  66                                                 <para>
  67                                                         (Bars,Beats,Ticks) this ruler displays positions based on the tempo
  68                                                         map.
  69                                                 </para>
  70                                         </entry>
  71                                 </row>
  72                         </tbody>
  73                 </tgroup>
  74         </table>
  75
  76         <para>
  77                 To show or hide one or more of the rulers, click on the area to the left of
  78                 their names. A menu will popup that has a check item for each available
  79                 ruler. Click on the name of the ruler to toggle its visibility.
  80         </para>
  81
  82         <para>
  83                 The tempo and meter tracks display the tempo map for the session. The tempo
  84                 track contains 1 or more tempo change points, with a default tempo of 120
  85                 beats per minute. The meter track contains 1 or more meter change points,
  86                 with an initial default meter of 4/4.
  87         </para>
  88
  89         <para>
  90                 on a tempo/meter change point to edit it. Click in the tempo/meter track to
  91                 add a new change point. Click and drag on a change point to move it. on a
  92                 tempo/meter change point to remove it.
  93         </para>
  94
  95         <para>
  96                 There is more information on using the timeline in editing_basics.
  97         </para>
  98 <!--
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 100                                                                         href="Some_Subsection.xml" />
 101                                                                 -->
 102 </section>