** Lists the features of phonemes and visemes.
**
** `http://msdn.microsoft.com/en-us/library/ee125218%28v=vs.85%29.aspx`
enum class SpeechVisemeFeature {
** Indicates that a viseme or phoneme has no stress or emphasis.
**
** Value is 0 (0x0)
SVF_None,
** Indicates that a viseme or phoneme is stressed relative to the other phonemes within a word.
**
** Value is 1 (0x1)
SVF_Stressed,
** Indicates that the word containing the viseme or phoneme is emphasized relative to the other words within a sentence.
**
** Value is 2 (0x2)
SVF_Emphasis;
}