文本转换成音频流

1.生成声音文件

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.textBox1.Text,SSF);
vo.WaitUntilDone(System.Threading.Timeout.Infinite);
SFS.Close();

2.朗读

DotNetSpeech.SpeechVoiceSpeakFlags SSF = DotNetSpeech.SpeechVoiceSpeakFlags.SVSFlagsAsync;
DotNetSpeech.SpVoice vo = new SpVoiceClass();
vo.Speak(this.textBox1.Text,SSF);

3.

/// 
/// 朗读
/// 

/// 要朗读的文本
private void Read(string text)
{
    SpVoice sv = new SpVoice();
    sv.Rate = 0;//设置朗读速度
    SpeechVoiceSpeakFlags SSF = SpeechVoiceSpeakFlags.SVSFlagsAsync;
    sv.Speak(text, SSF);
}
/// 
/// 生成声音文件
/// 
/// 要朗读的文本
/// 生成声音文件的路径
/// 生成声音文件的名称
private void CreateFile(string text, string filePath,string fileName)
{
    if (!Directory.Exists(filePath))
        Directory.CreateDirectory(filePath);
    SpVoice sv = new SpVoice();
    SpeechVoiceSpeakFlags SVSF = SpeechVoiceSpeakFlags.SVSFlagsAsync;
    SpeechStreamFileMode SSFM = SpeechStreamFileMode.SSFMCreateForWrite;
    SpFileStream SFS = new SpFileStream();
    SFS.Open(filePath+fileName, SSFM, false);
    sv.AudioOutputStream = SFS;
    sv.Speak(text, SVSF);
    sv.WaitUntilDone(System.Threading.Timeout.Infinite);
    SFS.Close();
}
2、 使用System.Speech
SpeechSynthesizer ss = new SpeechSynthesizer();
//播放
if (ss != null)
{
    ss.Dispose();
    ss.SpeakAsync("朗读的文本");
}
//暂停
if (ss.State == SynthesizerState.Speaking)
{
    ss.Pause();
}
//继续
if (reader.State == SynthesizerState.Paused)
{
    ss.Resume();
}
//停止
if (ss != null)
{
    ss.Dispose();
} 

4.

using System;
using System.Collections.Generic;
using System.Text;
using DotNetSpeech;
using System.Threading;
using System.IO;

namespace SpVoiceDemo
{
    class SpVoiceUtil
    {
        SpVoice voice = new DotNetSpeech.SpVoiceClass();

        public delegate void CallBack(bool b,int InputWordPosition, int InputWordLength); 

        /// <summary>
        /// 朗读文本
        /// </summary>
        /// <param name="str">要朗读的文本</param>
        /// <param name="CallBack">回调地址</param>
        /// <returns>返回bool</returns>
        public bool Speak(string str, CallBack CallBack)
        {
            int n = voice.Speak(str, SpeechVoiceSpeakFlags.SVSFlagsAsync);
            Thread thread = new Thread(new ParameterizedThreadStart(Call));
            thread.IsBackground = true;
            thread.Start((Object)CallBack);
            return !(n!=1);
        }


        /// <summary>
        /// 回调函数线程子程序
        /// </summary>
        /// <param name="callBack"></param>
        private void Call(Object callBack)
        {
            int InputWordLength = 0;    //局部_朗读长度
            int InputWordPosition = 0; //局部_朗读位置

            CallBack CallBack = (CallBack)callBack;

            while ((int)voice.Status.RunningState != 1)
            {
                if (InputWordPosition != voice.Status.InputWordPosition || InputWordLength != voice.Status.InputWordLength)
                {
                    InputWordPosition = voice.Status.InputWordPosition;
                    InputWordLength = voice.Status.InputWordLength;

                    //回调                  
                    CallBack(false, InputWordPosition, InputWordLength);
                }
            }
            CallBack(true, InputWordPosition, InputWordLength);
        }

        /// <summary>
        /// 获取语音库
        /// </summary>
        /// <returns>List<string></returns>
        public List<string> getDescription()
        {
            List<string> list = new List<string>();
            DotNetSpeech.ISpeechObjectTokens obj = voice.GetVoices();
            int count = obj.Count;//获取语音库总数
            for (int i = 0; i < count; i++)
            {
               string desc = obj.Item(i).GetDescription(); //遍历语音库
               list.Add(desc);
            }
            return list;
        }

        /// <summary>
        /// 设置当前使用语音库
        /// </summary>
        /// <returns>bool</returns>
        public bool setDescription(string name)
        {
            List<string> list = new List<string>();
            DotNetSpeech.ISpeechObjectTokens obj = voice.GetVoices();
            int count = obj.Count;//获取语音库总数
            bool result = false;
            for (int i = 0; i < count; i++)
            {
                string desc = obj.Item(i).GetDescription(); //遍历语音库
                if (desc.Equals(name))
                {
                    voice.Voice = obj.Item(i);
                    result = true;
                }
            }
            return result;
        }

        /// <summary>
        /// 设置语速
        /// </summary>
        /// <param name="n"></param>
        public void setRate(int n)
        {
            voice.Rate = n;
        }

        /// <summary>
        /// 设置声音大小
        /// </summary>
        /// <param name="n"></param>
        public void setVolume(int n)
        {
            voice.Volume = n;
        }

        /// <summary>
        /// 暂停
        /// </summary>
        public void Pause()
        {
            voice.Pause();
        }

        /// <summary>
        /// 继续
        /// </summary>
        public void Resume()
        {
            voice.Resume();
        }

        /// <summary>
        /// 停止
        /// </summary>
        public void Stop()
        {
            voice.Speak(string.Empty, SpeechVoiceSpeakFlags.SVSFPurgeBeforeSpeak);
        }


        /// <summary>
        /// 输出WAV
        /// </summary>
        /// <param name="path">保存路径</param>
        /// <param name="str">要转换的文本内容</param>
        /// <returns></returns>
        public bool WreiteToWAV(string path,string str,SpeechAudioFormatType SpAudioType)
        {
            SpeechStreamFileMode SpFileMode = SpeechStreamFileMode.SSFMCreateForWrite;
            SpFileStream SpFileStream = new SpFileStream();
            SpeechVoiceSpeakFlags SpFlags = SpeechVoiceSpeakFlags.SVSFlagsAsync;
            SpAudioFormat SpAudio = new DotNetSpeech.SpAudioFormat();
            SpAudio.Type = SpAudioType;
            SpFileStream.Format = SpAudio;
            SpFileStream.Open(path, SpFileMode, false);
            voice.AudioOutputStream = SpFileStream;
            voice.Speak(str, SpFlags);
            voice.WaitUntilDone(Timeout.Infinite);
            SpFileStream.Close();
            return File.Exists(path);
        }
    }
}