Hi,
The requirement is to perform text transcription.
There’s a separate transcription library that’s part of that frame work that’s not publically accessible that does free text transcription (it’s what Exchange UM servers use, but it’s actually its own library and sits in the Microsoft.Speech namespace).
The file is “MSSpeech_SR_TRANS.en-US.msi” and the speech engine it installs is “SR_MS_en-US_TRANS_11.0”.
How a customer could license it from Microsoft?