【c#】文本转语音，语音转文本

我尝试制作一个简单的wpf程序，该程序使用 System.Speech.Synthesis 中的 SpeechSynthesizer 到语音，实现文本转语音，语音转文本。目前只是一个初级的用法。
主要代码如下：

前台代码

<Window x:Class="SoundToText.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="795.4" Loaded="Window_Loaded_1" WindowStyle="ToolWindow" WindowStartupLocation="CenterScreen">
    <Grid Margin="0,0,3.2,-0.2">
        <Button x:Name="ReadBT" Content="朗读" HorizontalAlignment="Left" Margin="670,24,0,0" VerticalAlignment="Top" Width="82" Click="ReadBT_Click" Height="46"/>
        <Button x:Name="ConvertBT" Content="保存" HorizontalAlignment="Left" Margin="670,77,0,0" VerticalAlignment="Top" Width="82" Click="ConvertBT_Click" Height="46"/>
        <Button x:Name="WavTTBT" Content="语音转文字" HorizontalAlignment="Left" Margin="677,184,0,0" VerticalAlignment="Top" Width="75" Click="WavTTBT_Click" Height="116"/>
        <TextBox x:Name="InText" HorizontalAlignment="Left" Height="63" Margin="48,24,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="617"/>
        <GroupBox Header="文字转语音" HorizontalAlignment="Right" VerticalAlignment="Top" RenderTransformOrigin="0.5,0.5" Width="752" Height="137" Margin="0,0,10,0">
            
        </GroupBox>
        <Label Content="输
入
文
字" HorizontalAlignment="Left" Height="85" VerticalAlignment="Top" Width="24" Margin="19,19,0,0"/>
        <Label Content="保存路径" HorizontalAlignment="Left" Margin="19,97,0,0" VerticalAlignment="Top"/>
        <TextBox x:Name="savepathTXT" HorizontalAlignment="Left" Height="23" Margin="82,97,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="495"/>
        <Button x:Name="SelectPathBT" Content="选择" HorizontalAlignment="Left" Margin="590,95,0,0" VerticalAlignment="Top" Width="75" Height="24" Click="SelectPathBT_Click"/>
        <TextBox x:Name="SelectSoundTXT" HorizontalAlignment="Left" Height="23" Margin="82,184,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="495"/>
        <Button x:Name="SelectSoundBT" Content="选择" HorizontalAlignment="Left" Margin="590,184,0,0" VerticalAlignment="Top" Width="75" Height="24" Click="SelectSoundBT_Click"/>
        <GroupBox Header="语音转文字" HorizontalAlignment="Right" VerticalAlignment="Top" RenderTransformOrigin="0.5,0.5" Width="752" Height="157" Margin="0,154,9.6,0"/>
        <Label Content="选择语音" HorizontalAlignment="Left" Margin="24,181,0,0" VerticalAlignment="Top"/>
        <TextBox x:Name="OutTXT" HorizontalAlignment="Left" Height="85" Margin="53,215,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="612"/>
        <Label Content="输
出
文
字" HorizontalAlignment="Left" Height="85" VerticalAlignment="Top" Width="24" Margin="24,215,0,0"/>
        <Rectangle Fill="#B2090909" HorizontalAlignment="Left" Height="3" Margin="0,142,-9.4,0" Stroke="#00000000" VerticalAlignment="Top" Width="795"/>

    </Grid>
</Window>

后台代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Speech.Synthesis;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Forms;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace SoundToText
{
    /// 

    /// MainWindow.xaml 的交互逻辑
    /// 
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void ConvertBT_Click(object sender, RoutedEventArgs e)
        {
            if (InText.Text.Trim()=="")
            {
                System.Windows.Forms.MessageBox.Show("请输入要转换的文字");
                return;
            }
            ConvertBT.IsEnabled = false;
            ConvertBT.Content = "正在转换";            
            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]
//            var z = voice.GetInstalledVoices();

            voice.SelectVoiceByHints(VoiceGender.Male, VoiceAge.Child);
            voice.SetOutputToDefaultAudioDevice();
            string savepath = @savepathTXT.Text +"\\"+ DateTime.Now.ToString("yyyyMMddHHddss") + ".wav";
            voice.SetOutputToWaveFile(savepath);
           // voice.SelectVoice = "";
            //voice.SpeakAsync("Hellow Word");  //播放指定的字符串,这是异步朗读
            string content = InText.Text.Trim();
            //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.SpeakAsync(content);  //同步朗读
            //voice.StateChanged += schanged;
            voice.SpeakCompleted += speech_SpeakCompleted;
 

            voice.Dispose();  //释放所有语音资源
        }

        private void ReadBT_Click(object sender, RoutedEventArgs e)
        {
            if (InText.Text.Trim() == "")
            {
                System.Windows.Forms.MessageBox.Show("请输入要转换的文字");
                return;
            }
            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]
            //            var z = voice.GetInstalledVoices();

            voice.SelectVoiceByHints(VoiceGender.Male, VoiceAge.Child);
            voice.SetOutputToDefaultAudioDevice();
         
            // voice.SelectVoice = "";
            //voice.SpeakAsync("Hellow Word");  //播放指定的字符串,这是异步朗读
            string content = InText.Text.Trim();
            //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.SpeakAsync(content);  //同步朗读
            //voice.StateChanged += schanged;
            //voice.SpeakCompleted += speech_SpeakCompleted;
            voice.Pause();  //暂停朗读
            voice.Resume(); //继续朗读

            voice.Dispose();  //释放所有语音资源
        }

        private void schanged(object sender, StateChangedEventArgs e)
        {
           // throw new NotImplementedException();
        }

        private void speech_SpeakCompleted(object sender, SpeakCompletedEventArgs e)
        {
            System.Windows.Forms.MessageBox.Show("转换完成");
            ConvertBT.Content = "保存";
            ConvertBT.IsEnabled = true;
            
        }

        private void WavTTBT_Click(object sender, RoutedEventArgs e)
        {
            if (SelectSoundTXT.Text.Trim() == "")
            {
                System.Windows.Forms.MessageBox.Show("请选择要转换的声音文件");
                return;
            }
            try
            {
                WavTTBT.Content = "正在转换";
                System.Speech.Recognition.SpeechRecognitionEngine sre = new System.Speech.Recognition.SpeechRecognitionEngine();
                sre.LoadGrammar(new System.Speech.Recognition.DictationGrammar());
                sre.SetInputToWaveFile(SelectSoundTXT.Text.Trim());
                string res = null;
                StringBuilder sb = new StringBuilder();
                do
                {
                    try
                    {
                        res = sre.Recognize().Text;
                    }
                    catch (Exception)
                    {
                        res = null;
                    }
                    sb.Append(res);
                } while (res != null);
                sre.Dispose();
                OutTXT.Text = sb.ToString();
                WavTTBT.Content = "语音转文字";
               
            }
            catch (Exception ex)
            {
                //return (e.Message);
            }
        }

        private void Window_Loaded_1(object sender, RoutedEventArgs e)
        {
            string outPathOld = Properties.Settings.Default.FolderSelectPath;
            if (outPathOld == "")
            {
                savepathTXT.Text = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
            }
            else
            {
                savepathTXT.Text = outPathOld;
            }
           
            
        }

        private void SelectPathBT_Click(object sender, RoutedEventArgs e)
        {
            FolderBrowserDialog folderBrowserDialog = new FolderBrowserDialog();            
            if (folderBrowserDialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                string outpath = folderBrowserDialog.SelectedPath;
                if (outpath.Substring(outpath.Length-1,1)==@"\")
                {
                    savepathTXT.Text =  folderBrowserDialog.SelectedPath;
                }
                else
                {
                    savepathTXT.Text = folderBrowserDialog.SelectedPath + @"\";
                }
                Properties.Settings.Default["FolderSelectPath"] = InText.Text.ToString();
                Properties.Settings.Default.Save();
                Properties.Settings.Default.Reload();
            }
        }

        private void SelectSoundBT_Click(object sender, RoutedEventArgs e)
        {
            OpenFileDialog openFileDialog = new OpenFileDialog();
            openFileDialog.Title = "选择文件";
            openFileDialog.Filter = "音频文件(*.wav)|*.wav";           
            if (openFileDialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                SelectSoundTXT.Text = openFileDialog.FileName;
            }
        }
    }
}

下载源代码