Adding or Modifying Lip-sync Keys
CrazyTalk provides special lip synchronization tools to make sure that
the lip movements match the words being spoken by the virtual actor.
A viseme is a generic facial image that can be used to describe a particular sound.
It is the visual equivalent of a phoneme, or a unit of sound in a spoken language.
Using visemes, CrazyTalk provides perfect lip synchronization which
you can later adjust for different sounds as required.
The lip-synching keys are stored in the Lips track,
which belongs to the Audio track.
You may open it by clicking the 
button on the Audio track.
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Audio Track and Lips Track
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The Audio track stores the audio file from the
Import Audio  panel
or the Voice Script Library.
The audio data is displayed in a wave form.
You may double-click anywhere on the track to load an audio file.
Click the button on the
Audio track to show the Lips track.
You may manually add lip-synching keys to this track by double-clicking on the cells in this track.
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Adding or Modifying Lip-sync Keys
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The lip synchronization effect is applied to only a small section of the script and
indicated on the Lips track by a grey box.
To access the Lips Sync panel,
click the Lips Sync
button in the Timeline.
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Adding Lip-sync Keys
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You may double-click anywhere on the
Lips track to synchronize the lip movements in the Lips Sync panel.
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Select a viseme or phonetic sound from the various options displayed.
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Move the Expressiveness slider to adjust the strength of the lip movements to specify the intensity.
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"Ah" sound applied
Expressiveness = 50
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"Ah" sound applied
Expressiveness = 100
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Modifying Lip-sync Keys
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You may move the lip-synching keys to other parts of the script as desired, or use the data editing tools
to duplicate the lip movements.
To modify a lip-synching key, double-click on the target key to adjust the lip-synching settings in the Lips Sync panel.
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