manual/include/automation-modes.html

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<p>
In order to understand how automation in Ardour works, it is necessary to
understand the four modes of automation. They are: <kbd
class=menu>Manual</kbd>, <kbd class=menu>Play</kbd>, <kbd
class=menu>Write</kbd>, and <kbd class=menu>Touch</kbd>.
</p>
<figure class=right>
<img src="/images/automation-modes1.png">
<figcaption class=center>The automation mode menu.</figcaption>
</figure>
<p>
<kbd class=menu>Manual</kbd> mode is basically analogous to a processor's
bypass switch. Whenever an automation lane is in this mode, it is inactive
and any level that is manually set for controlling the lane's parameter will
persist during playback like normal.
</p>
<p class=note>
In Ardour, every track and processor parameter is initially set to <kbd
class=menu>Manual</kbd> mode.
</p>
<p>
<kbd class=menu>Play</kbd> mode tells Ardour to use the automation curve in
the automation lane to control the level of the parameter controlled by the
lane <em>during playback</em>. The control that normally sets the parameter
will be <em>unresponsive to manual input</em> and will move automatically in
accord with the lane's automation curve during playback.
</p>
<p>
<kbd class=menu>Write</kbd> mode allows continuous, dynamic setting of a
control during playback; all such settings are written to the lane the
control is in. This defines the lane's automation curve in the interval being
played, and overwrites any existing automation curve in the lane being
manipulated.
</p>
<p>
<kbd class=menu>Touch</kbd> mode is similar to <kbd class=menu>Write</kbd>
mode, except it only overwrites sections of a lane's automation curve when
the control is changed in some way. This allows for changing only the parts
of an automation curve that are desired to be changed, while leaving the rest
unchanged.
</p>