使用C#进行语音合成，让你的应用说话

以下代码显示了如何在C＃中使用语音合成。

在类中有一个名为sintetizador的全局变量, 请记住我们需要包含System.Speech.Synthesis。

本示例使用Async方法, 你将学习如何在不锁定UI的情况下使用监听器(开始, 结束)执行语音。阅读每个功能的摘要以获取更多说明。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Speech.Synthesis;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Synthesizer.net
{
    class SynthesizerUIHelper
    {
        private SpeechSynthesizer sintetizador = new SpeechSynthesizer();
        
        /// <summary>
        /// Speak a string of text asynchronously (without lock the ui). But we will add support for the events that it triggers.
        /// </summary>
        /// <param name="content"></param>
        public void speak(string content = "")
        {
            try
            {
                sintetizador.SelectVoice("Microsoft Irina Desktop"); // First list all the voices of the pc with <listAvailableVoicesConfigurator>
                sintetizador.SpeakProgress += new EventHandler<SpeakProgressEventArgs>(synthesizer_SpeakProgress);
                sintetizador.SpeakCompleted += new EventHandler<SpeakCompletedEventArgs>(synthesizer_SpeakCompleted);
                sintetizador.SetOutputToDefaultAudioDevice();
                sintetizador.SpeakAsync(content);
            }
            catch (InvalidOperationException e) { Console.WriteLine(e.Message); }
        }

        private void synthesizer_SpeakCompleted(object sender, SpeakCompletedEventArgs e)
        {
            Console.WriteLine("SpeakProgress: AudioPosition=" + e.AudioPosition + ", \tCharacterPosition=" + e.CharacterPosition + ", \tCharacterCount=" + e.CharacterCount + ", \tText=" + e.Text);
        }

        private void synthesizer_SpeakProgress(object sender, SpeakProgressEventArgs e)
        {
            Console.WriteLine("SpeakProgress: AudioPosition=" + e.AudioPosition + ", \tCharacterPosition=" + e.CharacterPosition + ", \tCharacterCount=" + e.CharacterCount + ", \tText=" + e.Text);
        }
        /// <summary>
        /// Stop the previous async speech
        /// </summary>
        public void stop()
        {
            try
            {
                sintetizador.SpeakAsyncCancelAll();
            }
            catch (ObjectDisposedException) { }
        }

        /// <summary>
        /// Set the sinthesizer volume with an integer (0 - 100)
        /// </summary>
        /// <param name="level"></param>
        public void setVolume(int level)
        {
            if (level > 100)
            {
                sintetizador.Volume = 100;
            }
            else if (level < 0)
            {
                sintetizador.Volume = 0;
            }
            else
            {
                sintetizador.Volume = level;
            }
        }

        public void resume()
        {
            sintetizador.Resume();
        }
        public void pause()
        {
            sintetizador.Pause();
        }

        /// <summary>
        /// Send speechSynthesizer output to a .wav file
        /// </summary>
        /// <param name="content"></param>
        public void toWAVFile(string content = "")
        {
            sintetizador.SelectVoice("Microsoft Irina Desktop");
            string path = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
            sintetizador.SetOutputToWaveFile(path + "/mySpokenAudio.wav");
            sintetizador.Speak(content);
            MessageBox.Show("File exported succesfully !", ".wav File succesfully exported", MessageBoxButtons.OK, MessageBoxIcon.Information);
            sintetizador.SetOutputToDefaultAudioDevice();
        }
        
        /// <summary>
        /// Shows a list of all the voices available in the pc, note that you need to figure out a method to choose the voice in the previous functions.
        /// </summary>
        public void listAvailableVoicesConfigurator()
        {
            using (sintetizador)
            {
                foreach (InstalledVoice voice in sintetizador.GetInstalledVoices())
                {
                    var info = voice.VoiceInfo;
                    Console.WriteLine(info.name + " - " +info.Culture);
                }
            }

        }
    }
}

这个github项目是一个使用cefsharp和.NET Framework 4.5构建的简单应用程序, 它是一个简单的UI, 可让你选择预先安装的Windows语音, 交谈, 暂停并在进度栏中显示语音的进度, 这是一个不错的开始了解语音合成的工作原理。