119 lines
5.5 KiB
HTML
119 lines
5.5 KiB
HTML
<h2>The transport controls</h2>
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<p>
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The <dfn>Transport Bar</dfn> groups all the actions regarding the control of
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playback and recording.
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</p>
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<figure>
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<img width="50%" src="/images/transport.png" alt="The transport controls">
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<figcaption>
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The transport controls
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</figcaption>
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</figure>
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<h3 id="transport_action_buttons">Transport action buttons</h3>
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<p>
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The upper row contains transport actions, that are all bound to keyboard
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shortcuts, which allows for speedier use and more focused work:
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</p>
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<table class="dl">
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<tr><th>Midi Panic</th><td>Immediately stops all midi output.</td></tr>
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<tr><th>Enable/disable Audio Click</th><td>Toggles (on/off) a click track (metronome)
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along the <a href="@@tempo-and-meter">tempo</a>. Right clicking brings up the
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<kbd class="menu">Click</kbd> submenu from the Preferences. Scrolling with
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the mouse wheel adjusts the gain of the click.</td></tr>
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<tr><th>Go to Start of the Session</th><td>Jumps back at the beginning of the session,
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as defined by the <a href="@@working-with-markers">start marker</a>.</td></tr>
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<tr><th>Go to End of the Session</th><td>Jumps forward to the end of the session,
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as defined by the <a href="@@working-with-markers">end marker</a>.</td></tr>
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<tr><th>Play Loop Range</th><td>Repeats the defined <a href="@@controlling-playback">loop</a>
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as defined by the <a href="@@the-loop-range">Loop range</a>, until the "Stop
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playback" button is pressed. Clicking the "Play loop Range" button while
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already active switches to normal Play mode, which exits the loop without
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stopping and restarting playback.</td></tr>
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<tr><th>Play Range/Selection</th><td>If a range has been defined using the Range
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Mode button, plays the range, of if an audio or MIDI region is selected,
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plays this region. In both cases, the playback stops at the end of the range
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or selected region.</td></tr>
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<tr><th>Play from playhead</th><td>Starts the playback and optionally record (more
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below).</td></tr>
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<tr><th>Stop</th><td>Whatever the playing mode (loop, range, …) stops all
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playback. Depending on other settings, some effects (like chorus or reverb)
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might still be audible for a while.</td></tr>
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<tr><th>Toggle Record</th><td>Global switch button to activate/deactivate recording.
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While active, the button blinks red. The button doesn't start recording by
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itself: if one or more tracks are marked as record-enabled, pressing the
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"Play from Playhead" starts recording on those tracks.</td></tr>
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</table>
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<p class="note">
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If Ardour is synchronized with other devices then some or all of these control
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methods may be unavailable—depending on the synchronization protocol,
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Ardour may respond only to commands sent from its master device(s).
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</p>
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<h3 id="transport_modifiers">The Transport modifiers</h3>
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<h4 id="transport_shuttle">The Shuttle Speed Control</h4>
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<p>
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Under these buttons is the <dfn>Shuttle Speed Control</dfn> that
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allows to <em>temporarily</em> scrub through the audio quickly. The slider
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decides the playback speed: the further from the center it is set,
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the faster the playback will scrub in both directions. The range of
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this acceleration can be set by <kbd class="mouse">right</kbd>
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clicking the control and setting the multiplier, between 1.5
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(± 150%) and 8 (± 800%).
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</p>
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<h4 id="transport_varispeed">VariSpeed</h4>
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<p>
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The <kbd class="menu">VS</kbd> (for <em>V</em>ari<em>S</em>peed)
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button sets a <em>constant</em> playback/record speed. It can be set
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in semitones (1 semitone = × 2 <sup>1⁄12</sup> ≈
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105,9%), or cents of semitones, and is armed/disarmed by clicking the
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button. The <kbd class="menu">VS</kbd> button will blink when VariSpeed
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is enabled. Whether or not this VariSpeed is persistent when
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stopping/restarting transport depends on the <kbd class="option">Reset
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default speed on stop</kbd> parameter in the <a
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href="@@preferences#preferences-transport">Preferences</a>.
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</p>
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<h4 id="transport_sync">Transport Sync</h4>
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<p>
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On the left of the slider is the positional sync button (which might show <dfn>Internal</dfn>,
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or <dfn>MTC</dfn> or several other values), than can be used to control whether or not the
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transport position and start is controlled by Ardour, or by an external positional
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synchronization source, such as MIDI Time Code (MTC), Linear Time Code (LTC) or JACK
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(see <a href="@@timecode-generators-and-slaves">Timecode Generators and Slaves</a>).
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</p>
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<h4 id="transport_status">Transport Status</h4>
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<p>
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The current playback status (Stop, Play, or speed %) is shown on the right of
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the speed slider.
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</p>
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<h2>Using Key Bindings</h2>
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<p>
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Ardour has many available commands for playback control that can be bound
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to keys. Many of them have default bindings, some do not, so the list below
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shows both the default bindings and internal command names for some of them.
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</p>
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<table class="dl">
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<tr><th><kbd>Space</kbd></th><td>Switch between playback and stop.</td></tr>
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<tr><th><kbd>Home</kbd></th><td>Move playhead to session start marker</td></tr>
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<tr><th><kbd>End</kbd></th><td>Move playhead to session end marker</td></tr>
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<tr><th><kbd>→</kbd></th><td>Playhead to next region boundary</td></tr>
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<tr><th><kbd>←</kbd></th><td>Playhead to previous region boundary</td></tr>
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<tr><th><kbd>0</kbd></th><td>Move playhead to start of the timeline</td></tr>
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</table>
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<p>
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The <kbd class="menu">Transport</kbd> and <kbd class="menu">Transport >
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Playhead</kbd> menus contain a lot more transport actions and their key bindings.
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</p>
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