Gets the identifier for the homophone group for the phrase.
Assembly: System.Speech (in System.Speech.dll)
The speech recognizer assigns a group identifier to all recognition alternates that have the same pronunciation. For each alternate that has a unique pronunciation, the recognizer creates a homophone group. The speech recognizer generates new group of identifiers for each recognition operation, and the identifiers cannot be used to compare alternates from generated from separate recognition operations.
For example, for a recognition result that contained the alternates "the tale", "the tail", and "the ale", the first two alternates would belong to one homophone group, and the last alternate would be the single member of a second homophone group.