112 lines
3.5 KiB
HTML
112 lines
3.5 KiB
HTML
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<figure>
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<img src="/images/new_main_clocks.png" alt="The transport clocks in Ardour">
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<figcaption>
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The transport clocks in Ardour
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</figcaption>
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</figure>
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<p>
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<dfn>Clocks</dfn> in Ardour are used to display time values
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precisely. In many cases, they are also one way to edit (change) time
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values.
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</p>
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<p>
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In the transport bar of the editor window there are two clocks by
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default, that display the current position of the playhead and
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additional information related to transport control and the timeline.
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These are called the <dfn>transport clocks</dfn>; the left one is the
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<dfn>primary transport clock</dfn> (always showing the playhead
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position) and the right one is the <dfn>secondary transport
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clock</dfn>.
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</p>
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<p>
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Having two transport clocks allows seeing the playhead position in
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two different time units without having to change any settings. For
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example, one can see the playhead position in both timecode units and
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BBT time. The secondary transport clock can nevertheless be hidden in
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the <a
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href="@@preferences#preferences-appearance-toolbar">Preferences</a>,
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at <kbd class="menu">Appearance > Toolbar > Display Secondary
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Clock</kbd>.
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</p>
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<p>
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All the clocks in Ardour share the same powerful way of editing time.
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Refer to <a href="@@editing-clocks">Editing Clocks</a> to learn how.
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Editing the time in the transport clocks will reposition the playhead
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in the same way that various other editing operations will.
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</p>
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<p>
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The transport clocks have special attributes due to their function:
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</p>
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<h2>Information panel</h2>
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<p>
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Under each clock is an information panel, that offers informations about the current <a href="@@editing-clocks#clock-modes">clock mode</a>:
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</p>
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<table class="dl">
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<thead>
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<tr>
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<th>Mode</th>
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<th>Information</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<th>Timecode / Minutes:Second / Seconds</th>
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<td>Source of Timecode (<samp>INT</samp> means that Ardour is its own timecode source)</td>
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</tr>
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<tr>
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<th>Bars:Beats</th>
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<td>Current tempo and current time signature. Clicking one of this button allows changing the value.</td>
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</tr>
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<tr>
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<th>Samples</th>
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<td>Sample rate (<samp>SR</samp>) and pull-up/down, as defined in the <a href="@@session-properties#properties-timecode">session properties</a>.</td>
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</tr>
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</tbody>
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</table>
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<h2>Time origin</h2>
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<p>
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In the <kbd class="mouse">Right</kbd>-click menu, it is possible to
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change the time origin, i.e. the zero-point in time, amongst :
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</p>
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<table class="dl">
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<tr>
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<th><dfn>Display absolute time</dfn></th>
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<td>The zero point is the absolute start of the timeline (ignoring the session start and any timecode offsets).</td>
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</tr>
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<tr>
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<th><dfn>Display delta to edit cursor</dfn></th>
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<td>The zero point is the Edit Point as chosen from the <a href="@@edit-point-control">Edit Point selector</a>, e.g. a selected marker.</td>
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</tr>
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<tr>
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<th><dfn>Display delta to origin marker</dfn></th>
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<td>The zero point is the <em>start</em> marker of the session.</td>
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</tr>
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</table>
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<ul>
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<li>
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The transport clock may display a positive or negative value
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depending on the temporal order of the chosen zero value and the
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playhead.
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</li>
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<li>
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The clocks will use a different color when in <em>delta to
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edit</em> or <em>delta to origin</em> mode to avoid confusion.
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</li>
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<li>
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Also, when in the two later modes, the value of the clock can not
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be edited.
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</li>
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</p>
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