Use visemes thrown by the speech engine as the basis for commands to the robot head. First create a map
between the visemes and cardinal, device independent mouth positions. Then map the robot min/max servo
positions to the cardinal positions using linear regression (computed off line). Use this information
to scale the cardinal positions to servo commands. Send servo commands.
Public void voice_Viseme (int, object, int, SpeechLib.SpeechVisemeType, SpeechLib.SpeechVisemeFeature, SpeechLib.SpeechVisemeType)