上篇博文说了一些Microsoft Speech Platform的知识点，这篇博文用一个例子来实践一下。
例子是实现一段文字的朗读，朗读到那一句文字，文字就变红色。就这么简单。
先看窗体布局。
实现代码：
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using
System;
using
System.Collections.Generic;
using
System.ComponentModel;
using
System.Data;
using
System.Drawing;
using
System.Linq;
using
System.Text;
using
System.Threading.Tasks;
using
System.Windows.Forms;
using
Microsoft.Speech.Synthesis;
using
System.Threading;
namespace
SpeechPro
{
public
partial
class
PlayForm : Form
{
public
PlayForm()
{
InitializeComponent();
}
/// <summary>
/// TTS对象
/// </summary>
SpeechSynthesizer speech;
/// <summary>
/// 分隔文本内容成数组
/// </summary>
/// <param name="content">文本内容</param>
/// <returns>字符数组</returns>
string
[] GetArr(
string
content)
{
char
[] charArr =
new
char
[] {
'。'
,
'，'
,
'；'
};
//分隔字符数组
string
[] arr = content.Split(charArr, StringSplitOptions.RemoveEmptyEntries);
//分隔
int
sumcount = 0;
//字符总数变量
for
(
int
i = 0; i < arr.Length; i++)
{
sumcount += arr[i].Length;
//累加变量总数
arr[i] += content.Substring(sumcount, 1);
//获取分隔标点符号
sumcount += 1;
//加标点符号的长度
}
return
arr;
}
string
[] arr;
/// <summary>
/// 播放内容
/// </summary>
void
Play()
{
arr = GetArr(Play_TB.Text);
//设计TTS对象，并设置对象
speech =
new
SpeechSynthesizer();
speech.SetOutputToDefaultAudioDevice();
speech.Volume = 100;
speech.Rate = 0;
speech.SpeakStarted += speech_SpeakStarted;
//异步诵读语音
for
(
int
i = 0; i < arr.Length; i++)
{
PromptBuilder pb =
new
PromptBuilder();
pb.AppendText(arr[i], PromptRate.Medium);
Prompt p =
new
Prompt(pb);
speech.SpeakAsync(p);
}
}
int
index = 0;
//朗读索引值
int
sum = 0;
//朗读总长度
/// <summary>
/// 朗读Prompt开始时事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void
speech_SpeakStarted(
object
sender, SpeakStartedEventArgs e)
{
if
(index > 0)
{
//使上一条记录恢复原来的样式
Play_TB.Select(sum - arr[index - 1].Length, arr[index - 1].Length);
Play_TB.SelectionColor = Color.Black;
}
//设置现在朗读记录的样式
Play_TB.Select(sum, arr[index].Length);
Play_TB.SelectionColor = Color.Red;
//增加长度和朗读索引
sum += arr[index].Length;
index++;
this
.Text =
"正在朗读第"
+ index +
"句"
;
}
/// <summary>
/// 朗读按钮
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private
void
Play_But_Click(
object
sender, EventArgs e)
{
Play();
}
}
}
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本文转自桂素伟51CTO博客，原文链接： http://blog.51cto.com/axzxs/1247881，如需转载请自行联系原作者
