C# 使用System.Speech 进行语音播报和识别

C# 使用System.Speech 进行语音播报和识别

  using System.Speech.Synthesis;
  using System.Speech.Recognition;

 //语音识别
 SpeechRecognitionEngine recEngine = new SpeechRecognitionEngine();
 SpeechSynthesizer speech = new SpeechSynthesizer();

 //**************************使用System.Speech 制作文字转换成声音的程序*******************************
 //rate: 范围为:-10~10;
 //volume: 范围为:0~100;
 //speektext: 待转换声音的文字
 public void SpeechVideo_Read(int rate, int volume, string speektext)  //读
 {
     speech.Rate = rate;
     speech.Volume = volume;
     speech.SpeakAsync(speektext);
 }

 public void SpeechVideo_Record(int rate, int volume, string recordtext)  //录音
 {
     SpeechSynthesizer speech = new SpeechSynthesizer();
     speech.Rate = rate;
     speech.Volume = volume;
     SaveFileDialog sfd = new SaveFileDialog();
     sfd.Filter = "文本文件(*.wav)|*.wav|所有文件(*.*)|*.*";
     //设置默认文件类型显示顺序
     sfd.FilterIndex = ;
     //保存对话框是否记忆上次打开的目录
     sfd.RestoreDirectory = true;
     if (sfd.ShowDialog() == DialogResult.OK)
     {
     string localfilepath = sfd.FileName.ToString();
     speech.SetOutputToWaveFile(localfilepath);
     speech.Speak(recordtext);
     speech.SetOutputToDefaultAudioDevice();
     MessageBox.Show("完成录音!", "提示");
     }
 }

 public void SpeechVideo_Pause()  //暂停
 {
     speech.Pause();
 }

 public void SpeechVideo_Contine()  //暂停后继续
 {
     speech.Resume();
 }
 //**************************************结束********************************************************

 //*****************************************使用System.Speech 制作语音识别程序***********************
 //rate: 范围为:-10~10;
 //volume: 范围为:0~100;
 //speektext: 待转换声音的文字
 public void recEngine_Speech_RecordCheck()  //读
 {
     Choices preCmd = new Choices();
     preCmd.Add(new string[] { "name", "age" });
     GrammarBuilder gb = new GrammarBuilder();
     gb.Append(preCmd);
     Grammar gr = new Grammar(gb);
     recEngine.LoadGrammarAsync(gr);
     recEngine.SetInputToDefaultAudioDevice();
     recEngine.RecognizeAsync(RecognizeMode.Multiple);
     recEngine.SpeechRecognized += recEngine_SpeechRecognized;
     }

 public void recEngine_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
 {
     switch (e.Result.Text)
     {
         case "name":
         MessageBox.Show("wangjin");
         break;
         case "age":
         MessageBox.Show("");
         break;
     }
 }

 //**************************************结束****************************************************//