RecognitionResult.GetAudioForWordRange 方法

public:
 System::Speech::Recognition::RecognizedAudio ^ GetAudioForWordRange(System::Speech::Recognition::RecognizedWordUnit ^ firstWord, System::Speech::Recognition::RecognizedWordUnit ^ lastWord);

public System.Speech.Recognition.RecognizedAudio GetAudioForWordRange(System.Speech.Recognition.RecognizedWordUnit firstWord, System.Speech.Recognition.RecognizedWordUnit lastWord);

member this.GetAudioForWordRange : System.Speech.Recognition.RecognizedWordUnit * System.Speech.Recognition.RecognizedWordUnit -> System.Speech.Recognition.RecognizedAudio

Public Function GetAudioForWordRange (firstWord As RecognizedWordUnit, lastWord As RecognizedWordUnit) As RecognizedAudio

参数

返回

与字范围关联的音频的部分。

例外

示例

以下示例创建一个语法来接受名称输入，并向其附加事件的处理程序 SpeechRecognized 。 语法对短语的名称元素使用通配符。 事件处理程序使用通配符中的音频来创建和播放问候提示。

private Grammar CreateNameInputGrammar()
{
  GrammarBuilder wildcardBuilder = new GrammarBuilder();
  wildcardBuilder.AppendWildcard();
  SemanticResultKey nameKey =
    new SemanticResultKey("Name", wildcardBuilder);

  GrammarBuilder nameBuilder =
    new GrammarBuilder("My name is");
  nameBuilder.Append(nameKey);

  Grammar nameGrammar = new Grammar(nameBuilder);
  nameGrammar.Name = "Name input";

  nameGrammar.SpeechRecognized +=
    new EventHandler<SpeechRecognizedEventArgs>(
      NameInputHandler);

  return nameGrammar;
}

// Handle the SpeechRecognized event for the name grammar.
private void NameInputHandler(object sender, SpeechRecognizedEventArgs e)
{
  if (e.Result == null) return;

  RecognitionResult result = e.Result;
  SemanticValue semantics = e.Result.Semantics;

  if (semantics.ContainsKey("Name"))
  {
    RecognizedAudio nameAudio =
      result.GetAudioForWordRange(
        result.Words[3], result.Words[result.Words.Count - 1]);

    // Save the audio. Create a directory and file as necessary.
    FileInfo fi = new FileInfo(@"C:\temp\temp.wav");
    if (!fi.Directory.Exists)
    {
      fi.Directory.Create();
    }
    FileStream stream = new FileStream(fi.FullName, FileMode.Create);
    nameAudio.WriteToWaveStream(stream);
    stream.Close();

    // Greet the person using the saved audio.
    SpeechSynthesizer synthesizer = new SpeechSynthesizer();
    PromptBuilder builder = new PromptBuilder();
    builder.AppendText("Hello");
    builder.AppendAudio(fi.FullName);
    synthesizer.Speak(builder);
  }
}

注解

若要获取与识别结果关联的完整音频，请使用 Audio 属性。

另请参阅

• RecognitionEventArgs
• RecognizedPhrase
• RecognizedWordUnit
• Audio
• Words