Raised when a viseme is reached.
Assembly: System.Speech (in System.Speech.dll)
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. PhonemeReached event is raised for the “s” in “this” and the “z” in “zone”. However, a event is not raised for the “z” in “zone” because it corresponds to the same viseme as the “s” in “this”.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 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
The following is a list of the 21 SAPI phonemes and phoneme groups that correspond to a viseme in US English.
ae, ax, ah
ey, eh, uh
y, iy, ih, ix
sh, ch, jh, zh
d, t, n
k, g, ng
p, b, m
For information about data associated with the VisemeReached event, see VisemeReachedEventArgs.
Available since 3.0