用c#语言编写的语音应用程序

程序能够正常运行了，在富文本框中输入文字可以读出来了，因为我们再做一个3d智能导游员，需要导游员根据用户语音输入的问题可以进行相应回答，应该怎样进行语音匹配？   请教各位高手。。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using DotNetSpeech;namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        private Button button2;
        private RichTextBox richTextBox1;
        private Button button1;
    
        public Form1()
        {
            InitializeComponent();
        }        private void InitializeComponent()
        {
            this.button1 = new System.Windows.Forms.Button();
            this.button2 = new System.Windows.Forms.Button();
            this.richTextBox1 = new System.Windows.Forms.RichTextBox();
            this.SuspendLayout();
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(22, 199);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(103, 22);
            this.button1.TabIndex = 0;
            this.button1.Text = "朗读";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // button2
            // 
            this.button2.Location = new System.Drawing.Point(154, 199);
            this.button2.Name = "button2";
            this.button2.Size = new System.Drawing.Size(103, 22);
            this.button2.TabIndex = 1;
            this.button2.Text = "生成声音文本";
            this.button2.UseVisualStyleBackColor = true;
            this.button2.Click += new System.EventHandler(this.button2_Click);
            // 
            // richTextBox1
            // 
            this.richTextBox1.Location = new System.Drawing.Point(36, 33);
            this.richTextBox1.Name = "richTextBox1";
            this.richTextBox1.Size = new System.Drawing.Size(220, 130);
            this.richTextBox1.TabIndex = 2;
            this.richTextBox1.Text = "";
            // 
            // Form1
            // 
            this.ClientSize = new System.Drawing.Size(292, 266);
            this.Controls.Add(this.richTextBox1);
            this.Controls.Add(this.button2);
            this.Controls.Add(this.button1);
            this.Name = "Form1";
            this.ResumeLayout(false);        }        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                DotNetSpeech.SpeechVoiceSpeakFlags SSF = DotNetSpeech.SpeechVoiceSpeakFlags.SVSFlagsAsync;
                DotNetSpeech.SpVoice vo = new SpVoiceClass();
                vo.Speak(this.richTextBox1.Text, SSF);
            }
            catch (System.Exception ec)
            {
                MessageBox.Show(ec.ToString(), "SpeechApp", MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Error);
            }
        }        private void button2_Click(object sender, EventArgs e)
        {
            try
            {
                DotNetSpeech.SpeechVoiceSpeakFlags SSF = DotNetSpeech.SpeechVoiceSpeakFlags.SVSFlagsAsync;
                DotNetSpeech.SpVoice vo = new SpVoiceClass();
                System.Windows.Forms.SaveFileDialog SFD = new System.Windows.Forms.SaveFileDialog();
                SFD.Filter = "All files (*.*)|*.*|wav files (*.wav)|*.wav";
                SFD.Title = "Save to a wav file";
                SFD.FilterIndex = 2;
                SFD.RestoreDirectory = true;
                if (SFD.ShowDialog() == System.Windows.Forms.DialogResult.OK)
                {
                    DotNetSpeech.SpeechStreamFileMode SSFM = DotNetSpeech.SpeechStreamFileMode.SSFMCreateForWrite;
                    DotNetSpeech.SpFileStream SFS = new DotNetSpeech.SpFileStreamClass();
                    SFS.Open(SFD.FileName, SSFM, false);
                    vo.AudioOutputStream = SFS;
                    vo.Speak(this.richTextBox1.Text, SSF);
                    vo.WaitUntilDone(System.Threading.Timeout.Infinite);
                    SFS.Close();
                }
            }
            catch (System.Exception ec)
            {
                MessageBox.Show(ec.ToString(), "SpeechApp", MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Error);
            }
        }
    }
}