Improve Speech Recognition

The following considerations are provided to improve Pick Up & Go speech recognition.

• The vocabulary can be expanded without increasing the training burden. An expanded vocabulary can improve usability and accuracy by adding alternate words for a given command, such as allowing either "ready" or "go" to be used at a given node.
• Sensitivity parameters can be used to control rejection of extraneous noises and speech. These parameters are PnG_Decode_Sensitivity and PnG_Decode_Sensitivity_<vocabword>.
• Parameters can be used to add additional pronunciations or override the built-in pronunciation for a word or words. These parameters are PnG_Recog_PronunciationRespellings_<languageTag>_<word> and PnG_Recog_DisableDefaultPronunciations_<languageTag>_<word>.