csharp:Google TTS API text to speech

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Net;
using System.Threading;
using NAudio.Wave;//http://naudio.codeplex.com/
using NAudio.CoreAudioApi;
using System.Web;
using System.Media;
using SpeechLib;//NET2.0 引用 Speech sdk 5.1 在COM选项卡里面的Microsoft Speech  object  library引用 已经有11.0版本
using Microsoft.DirectX;
using Microsoft.DirectX.DirectSound;

namespace Speech
{
    /// <summary>
    /// Csharp: Google TTS API 文本语音读取
    ///  涂聚文
    /// </summary>
    public partial class Form2 : Form
    {
        /// <summary>
        ///
        /// </summary>
        /// <param name="FileName"></param>
        public void PlaySound(string FileName)
        {
            //要加载COM组件:Microsoft speech object Library
            if (!System.IO.File.Exists(FileName))
            {
                return;
            }

            SpeechLib.SpVoiceClass pp = new SpeechLib.SpVoiceClass();
            SpeechLib.SpFileStreamClass spFs = new SpeechLib.SpFileStreamClass();
            spFs.Open(FileName, SpeechLib.SpeechStreamFileMode.SSFMOpenForRead, true);
            SpeechLib.ISpeechBaseStream Istream = spFs as SpeechLib.ISpeechBaseStream;
            pp.SpeakStream(Istream, SpeechLib.SpeechVoiceSpeakFlags.SVSFIsFilename);
            spFs.Close();
        }
        /// <summary>
        ///
        /// </summary>
        public Form2()
        {
            InitializeComponent();
        }
        /// <summary>
        ///
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Form2_Load(object sender, EventArgs e)
        {
            this.textBox1.Text = "中华人民共和国";
            //ok
            WebClient web = new WebClient();
            web.Headers.Add(HttpRequestHeader.UserAgent, "Mozilla/4.0 (compatible; MSIE 9.0; Windows;)");

            string encstr = string.Empty;

            string filename = "tts.mp3"; //could also be tts.wav

            string s = "中华人民共和国涂聚文投诉";

            encstr = Uri.EscapeDataString(s);

            Console.WriteLine(encstr);

            web.DownloadFile("http://translate.google.com/translate_tts?ie=UTF-8&tl=zh-cn&q=" + encstr, ".\\" + filename);

            //PlaySound(Application.StartupPath+"\\"+filename);
            //SoundPlayer sp = new SoundPlayer();
            //sp.SoundLocation = Application.StartupPath + "\\" + filename;
            //sp.LoadAsync();
            //sp.PlaySync();
            //sp.PlayLooping();
            //Device dv = new Device();
            //SecondaryBuffer buf = new SecondaryBuffer(Application.StartupPath + "\\" + filename, dv);
            //buf.Play(0, BufferPlayFlags.Looping);
            this.axWindowsMediaPlayer1.URL = Application.StartupPath + "\\" + filename;
        }
        bool waiting = false;
        AutoResetEvent stop = new AutoResetEvent(false);
        /// <summary>
        /// 英文可以，中文不行
        /// </summary>
        /// <param name="url"></param>
        public void PlayMp3FromUrl(string url)
        {
            try
            {
                url = HttpUtility.UrlDecode(url);
                using (Stream ms = new MemoryStream())
                {
                    using (Stream stream = WebRequest.Create(url).GetResponse().GetResponseStream())//HttpUtility.UrlDecode(
                    {
                        //UTF8Encoding encoding = new UTF8Encoding();
                        //byte[] buffer = encoding.GetBytes(url);
                        //stream.Write(buffer, 0, buffer.Length);
                        //stream.Close();

                        byte[] buffer = new byte[32768];//32768
                        int read;
                        while ((read = stream.Read(buffer, 0, buffer.Length)) > 0)
                        {
                            ms.Write(buffer, 0, read);
                        }
                        //using (StreamWriter writer = new StreamWriter(stream, Encoding.UTF8))
                        //{
                        //    writer.Write(url);
                        //}

                    }
                    //using (Stream stream = request.GetRequestStream())
                    //using (StreamWriter writer = new StreamWriter(requestStream, Encoding.UTF8))
                    //{
                    //    writer.Write(url);
                    //}
                    ms.Position = 0;
                    using (WaveStream blockAlignedStream =
                        new BlockAlignReductionStream(
                            WaveFormatConversionStream.CreatePcmStream(
                                new Mp3FileReader(ms))))
                    {
                        using (WaveOut waveOut = new WaveOut(WaveCallbackInfo.FunctionCallback()))
                        {
                            waveOut.Init(blockAlignedStream);
                            waveOut.PlaybackStopped += (sender, e) =>
                            {
                                waveOut.Stop();
                            };

                            waveOut.Play();
                            waiting = true;
                            stop.WaitOne(10000);
                            waiting = false;
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                ex.Message.ToString();
            }
        }
        /// <summary>
        /// http://translate.google.com/translate_tts?tl=zh-cn&q=%E4%B8%AD%E5%8D%8E%E4%BA%BA%E6%B0%91%E5%85%B1%E5%92%8C%E5%9B%BD
        /// http://translate.google.cn/translate_tts?ie=UTF-8&q=%E4%B8%AD%E5%9B%BD%E5%8D%8E%E4%BA%BA%E6%B0%91%E5%85%B1%E5%92%8C%E5%9B%BD&tl=zh-cn&prev=input
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button1_Click(object sender, EventArgs e)
        {

            //var playThread = new Thread(() => PlayMp3FromUrl("http://translate.google.com/translate_tts?tl=en&q=" + HttpUtility.UrlEncode(this.textBox1.Text)));
            string str = HttpUtility.UrlEncode(this.textBox1.Text);
            var playThread = new Thread(() => PlayMp3FromUrl("http://translate.google.com/translate_tts?ie=UTF-8&tl=zh-cn&q=" + str));// HttpUtility.UrlEncode(
            playThread.IsBackground = true;
            playThread.Start();
        }
    }
}