How to work with "ISpTranscript"

See more:

C#

How can I use "ISpTranscript" to train the speech recognition engine in C# for a word by a wav file?
I have a code that shows the use of "ISpTranscript" but it's for c++ programmers , can you convert it to C# code?

HRESULT hr = S_OK;

// Bind a stream to an existing wavefile
hr = SPBindToFile( FILENAME, SPFM_READ_ONLY, &cpStream);
// Check hr

hr = cpStream.QueryInterface(&cpTranscript);
// Check hr

PWCHAR pwszTranscript;
hr = cpTranscript->GetTranscript(&pwszTranscript);
// Check hr


thanks