SpeechSynthesizer.VisemeReached Event
Definition
Important
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Raised when a viseme is reached.
public:
event EventHandler<System::Speech::Synthesis::VisemeReachedEventArgs ^> ^ VisemeReached;public event EventHandler<System.Speech.Synthesis.VisemeReachedEventArgs> VisemeReached;member this.VisemeReached : EventHandler<System.Speech.Synthesis.VisemeReachedEventArgs> Public Custom Event VisemeReached As EventHandler(Of VisemeReachedEventArgs) Event Type
Remarks
A viseme is the basic position of the mouth and face when pronouncing a phoneme. Visemes are visual representations of phonemes.
System.Speech supports 21 visemes for US English, each of which corresponds to one or more phonemes. VisemeReached events are raised when a new phoneme reached has a different corresponding viseme than the previous phoneme reached. Since some visemes represent more than one phoneme, a VisemeReached event is not generated if the next phoneme reached corresponds to the same viseme as the previous phoneme. For example, for the spoken words "this zone", a PhonemeReached event is raised for the "s" in "this" and the "z" in "zone". However, a VisemeReached event is not raised for the "z" in "zone" because it corresponds to the same viseme as the "s" in "this".
The following is a list of the 21 SAPI phonemes and phoneme groups that correspond to a viseme in US English.
| Viseme | Phoneme(s) |
|---|---|
| 0 | silence |
| 1 | ae, ax, ah |
| 2 | aa |
| 3 | ao |
| 4 | ey, eh, uh |
| 5 | er |
| 6 | y, iy, ih, ix |
| 7 | w, uw |
| 8 | ow |
| 9 | aw |
| 10 | oy |
| 11 | ay |
| 12 | h |
| 13 | r |
| 14 | l |
| 15 | s, z |
| 16 | sh, ch, jh, zh |
| 17 | th, dh |
| 18 | f, v |
| 19 | d, t, n |
| 20 | k, g, ng |
| 21 | p, b, m |
For information about data associated with the VisemeReached event, see VisemeReachedEventArgs.
