C#如何实现文字转语音功能

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效果图

关键是，c#有现成的一个引用

右键点击项目 > 添加引用 > .net > 找到System.Speech点击确定

控制台程序代码：

using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Speech.Synthesis;using System.Text;using System.Threading.Tasks;using System.windows.FORMs;   namespace TxtToVoice{    class Program    {        [STAThread] //默认线程模型是单线程单元 (STA) 模式        static void Main(string[] args)        {             //Application.EnableVisualStyles();            //Application.SetCompatibleTextRenderingDefault(false);            //Application.Run(new Form1());             //return;                          OpenFileDialog open = new OpenFileDialog();                open.Title = "请选择文本"; //打开的文件选择对话框上的标题                open.Filter = "文本文件(*.txt)|*.txt|所有文件(*.*)|*.*";//设置文件类型                open.InitialDirectory = @"D:\project\";//默认打开目录                open.FilterIndex = 1;//设置默认文件类型显示顺序                open.RestoreDirectory = false;//是否记忆上次打开的目录                //open.Multiselect = true;//是否允许多选                string content=string.Empty;                if (open.ShowDialog() == DialogResult.OK)//按下确定选择的按钮               {                    string[] filename = open.FileNames;//获取多个文件的路径及文件名并存入数组                    MessageBox.Show(filename[0]);                   // MessageBox.Show(filename[1]);                   // MessageBox.Show(open.FileName); //获取路径及文件名                   // MessageBox.Show(open.SafeFileName);//获取文件名                    content = ReadFile(filename[0]);                }            //-----------------------------------读出文件内容---------------------------------                          SpeechSynthesizer voice = new SpeechSynthesizer();   //创建语音实例               voice.Rate = -1; //设置语速,[-10,10]               voice.Volume = 100; //设置音量,[0,100]               //voice.SpeakAsync("Hellow Word");  //播放指定的字符串,这是异步朗读                //下面的代码为一些SpeechSynthesizer的属性，看实际情况是否需要使用                voice.SpeakAsyncCancelAll();  //取消朗读               voice.Speak(content);  //同步朗读               voice.Pause();  //暂停朗读               voice.Resume(); //继续朗读                voice.Dispose();  //释放所有语音资源         }         /// <summary>        /// 读取文件，返回相应字符串        /// </summary>        /// <param name="fileName">文件路径</param>        /// <returns>返回文件内容</returns>        private static string ReadFile(string fileName)        {            StringBuilder str = new StringBuilder();            using (FileStream fs = File.OpenRead(fileName))            {                long left = fs.Length;                int maxLength = 100;//每次读取的最大长度                int start = 0;//起始位置                int num = 0;//已读取长度                while (left > 0)                {                    byte[] buffer = new byte[maxLength];//缓存读取结果                    char[] cbuffer = new char[maxLength];                    fs.Position = start;//读取开始的位置                    num = 0;                    if (left < maxLength)                    {                        num = fs.Read(buffer, 0, Convert.ToInt32(left));                    }                    else                    {                        num = fs.Read(buffer, 0, maxLength);                    }                    if (num == 0)                    {                        break;                    }                    start += num;                    left -= num;                    str = str.Append(Encoding.UTF8.GetString(buffer));                }            }            return str.ToString();        }    }}

窗体代码：

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.IO;using System.Linq;using System.Speech.Synthesis;using System.Text;using System.Threading;using System.Threading.Tasks;using System.Windows.Forms; namespace TxtToVoiceForm{    public partial class Form2 : Form    {        private SpeechSynthesizer speech;         /// <summary>        /// 音量        /// </summary>        private int value = 100;        /// <summary>        /// 语速        /// </summary>        private int rate;         public Form2()        {            InitializeComponent();            ReadlocalFile();            comboBox1.SelectedIndex = 0;        }         private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)        {            rate = Int32.Parse(comboBox1.Text);        }         //private void 打开文件ToolStripMenuItem_Click(object sender, EventArgs e)        //{        //    this.ReadlocalFile();         //}         /// <summary>        /// 读取本地文本文件的方法        /// </summary>        private void ReadlocalFile()        {            var open = new OpenFileDialog();             open.ShowDialog();             //得到文件路径            string path = open.FileName;             if (path.Trim().Length == 0)            {                 return;            }             var os = new StreamReader(path, Encoding.UTF8);            string str = os.ReadToEnd();            textBox1.Text = str;        }        private void 清空内容ToolStripMenuItem_Click(object sender, EventArgs e)        {            textBox1.Text = "";        }         private void button1_Click(object sender, EventArgs e)        {            string text = textBox1.Text;             if (text.Trim().Length == 0)            {                MessageBox.Show("不能阅读空内容!", "错误提示");                return;            }             if (button1.Text == "语音试听")            {                 speech = new SpeechSynthesizer();                 new Thread(Speak).Start();                 button1.Text = "停止试听";             }            else if (button1.Text == "停止试听")            {                 speech.SpeakAsyncCancelAll();//停止阅读                 button1.Text = "语音试听";            }        }         private void Speak()        {             speech.Rate = rate;            //speech.SelectVoice("Microsoft Lili");//设置播音员（中文）            //speech.SelectVoice("Microsoft Anna"); //英文            speech.Volume = value;            speech.SpeakAsync(textBox1.Text);//语音阅读方法            speech.SpeakCompleted += speech_SpeakCompleted;//绑定事件        }         /// <summary>        /// 语音阅读完成触发此事件        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        void speech_SpeakCompleted(object sender, SpeakCompletedEventArgs e)        {            button1.Text = "语音试听";        }         /// <summary>        /// 拖动进度条事件        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void trackBar1_Scroll(object sender, EventArgs e)        {            //因为trackBar1的值为（0-10）之间而音量值为（0-100）所以要乘10；            value = trackBar1.Value * 10;        }         private void button2_Click(object sender, EventArgs e)        {               string text = textBox1.Text;             if (text.Trim().Length == 0)            {                MessageBox.Show("空内容无法生成!", "错误提示");                return;            }             this.SaveFile(text);         }         /// <summary>        /// 生成语音文件的方法        /// </summary>        /// <param name="text"></param>        private void SaveFile(string text)        {            speech = new SpeechSynthesizer();            var dialog = new SaveFileDialog();            dialog.Filter = "*.wav|*.wav|*.mp3|*.mp3";            dialog.ShowDialog();             string path = dialog.FileName;            if (path.Trim().Length == 0)            {                return;            }            speech.SetOutputToWaveFile(path);            speech.Volume = value;            speech.Rate = rate;            speech.Speak(text);            speech.SetOutputToNull();            MessageBox.Show("生成成功!在" + path + "路径中！", "提示");         }         private void label1_Click(object sender, EventArgs e)        {         }         private void label3_Click(object sender, EventArgs e)        {            this.ReadlocalFile();        }       }}

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