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****************************************************//