C# 语音功能的实现方法

首先要安装speechsdk5.1 开发包和speechsdk5.1 langague pack（中英文） 语言包，不过vs2010里是自带speechsdk5.0的com组件的，也可以用。

 简单讲一下四个方法：

朗读时，使用

voice.speak(string,speechvoicespeakflags.svsflagsasync);

暂停，使用

voice.pause();

从暂停中继续刚才的朗读，使用

voice.resume();

停止功能

voice.speak(string.empty, speechvoicespeakflags.svsfpurgebeforespeak);

这样就可以完整地实现了“朗读”、“暂停”、“继续”、“停止”的功能。

下面就直接给出实例代码：

 private void button1_click(object sender, eventargs e)
        {
            analyse(this.textbox1.text);
        }

 

public void analyse(string strspeak)
        {
            int icbeg = 0;
            int iebeg = 0;
            bool ischina = true;
            for (int i = 0; i < strspeak.length; i++)
            {
                char chr = strspeak[i];
                if (ischina)
                {
                    if (convert.toint32(chr) <= 122 && convert.toint32(chr) >= 65)
                    {
                        int ilen = i - icbeg;
                        string strvalue =
             strspeak.substring(icbeg, ilen);
                        speakchina(strvalue);
                        iebeg = i;
                        ischina = false;
                    }
                }
                else
                {
                    if (convert.toint32(chr) > 122 || convert.toint32(chr) < 65)
                    {
                        int ilen = i - iebeg;
                        string strvalue =
strspeak.substring(iebeg, ilen);
                        this.speakenglishi(strvalue);
                        icbeg = i;
                        ischina = true;
                    }
                }
            }

             if (ischina)    
             {       int ilen = strspeak.length - icbeg;
                 string strvalue = strspeak.substring(icbeg, ilen);
                 speakchina(strvalue);
             }     
             else
             {
                 int ilen = strspeak.length - iebeg;
                 string strvalue = strspeak.substring(iebeg, ilen);
                 speakenglishi(strvalue);
             }

        }

 

        //中文
        private void speakchina(string speak)
        {
            voice = new spvoice();
            voice.voice = voice.getvoices(string.empty, string.empty).item(3);//其中3为中文，024为英文
            voice.speak(speak, speechvoicespeakflags.svsfdefault);

        }
        //英文
        private void speakenglishi(string speak)
        {
            voice = new spvoice();
            voice.voice = voice.getvoices(string.empty, string.empty).item(0);//其中3为中文，024为英文
            voice.speak(speak, speechvoicespeakflags.svsfdefault);

        }

 

//保存语音
        private void button2_click(object sender, eventargs e)
        {
                 try    
                 {
                     speechvoicespeakflags spflags = speechvoicespeakflags.svsflagsasync;
                     spvoice voice = new spvoice();      
                     savefiledialog sfd = new savefiledialog();     
                     sfd.filter = "all files (*.*)|*.*|wav files (*.wav)|*.wav";      
                     sfd.title = "save to a wave file";      
                     sfd.filterindex = 2;      
                     sfd.restoredirectory = true;      
                     if (sfd.showdialog() == dialogresult.ok)      
                     {        
                         speechstreamfilemode spfilemode = speechstreamfilemode.ssfmcreateforwrite;
                         spfilestream spfilestream = new spfilestream();
                         spfilestream.open(sfd.filename, spfilemode, false);
                         voice.audiooutputstream = spfilestream;
                         voice.speak(this.textbox1.text, spflags);
                         voice.waituntildone(100);
                         spfilestream.close();
                     }    
                 }  
                 catch (exception er)
                 {
                     messagebox.show("an error occured!", "speechapp", messageboxbuttons.ok, messageboxicon.error);
                 }

        }