问System.Speech.Recognition可以使用语音文件作为语法吗？

EN

    public static int Wav2Flac(String wavName, string flacName)
    {
        int sampleRate = 0;

        IAudioSource audioSource = new WAVReader(wavName, null);
        AudioBuffer buff = new AudioBuffer(audioSource, 0x10000);

        FlakeWriter flakewriter = new FlakeWriter(flacName, audioSource.PCM);
        sampleRate = audioSource.PCM.SampleRate;            
        FlakeWriter audioDest = flakewriter;
        while (audioSource.Read(buff, -1) != 0)
        {
            audioDest.Write(buff);                
        }
        audioDest.Close();

        audioDest.Close();
        return sampleRate;
  }
  public static String GoogleSpeechRequest(String flacName, int sampleRate)
  {

    WebRequest request = WebRequest.Create("https://www.google.com/speech-api/v1/recognize?xjerr=1&client=chromium&lang=ru-RU");

    request.Method = "POST";

    byte[] byteArray = File.ReadAllBytes(flacName);

    // Set the ContentType property of the WebRequest.
    request.ContentType = "audio/x-flac; rate=" + sampleRate; //"16000";        
    request.ContentLength = byteArray.Length;

    // Get the request stream.
    Stream dataStream = request.GetRequestStream();
    // Write the data to the request stream.
    dataStream.Write(byteArray, 0, byteArray.Length);

    dataStream.Close();

    // Get the response.
    WebResponse response = request.GetResponse();

    dataStream = response.GetResponseStream();
    // Open the stream using a StreamReader for easy access.
    StreamReader reader = new StreamReader(dataStream);
    // Read the content.
    string responseFromServer = reader.ReadToEnd();

    // Clean up the streams.
    reader.Close();
    dataStream.Close();
    response.Close();

    return responseFromServer;
  }