HRESULT PhraseStart(QWORD qTimeStampBegin);
Notifies the application that the engine has started processing audio data for a recognition result.
· Return value is ignored.
qTimeStampBegin
[in] Time, in bytes, when the phrase began.
After sending PhraseStart, the engine may send one or more PhraseHypothesis notifications, but it must always conclude with a PhraseFinish.