一个基于Windows Vista speech API5.3以及WPF技术的语音朗读代码

一个基于Windows Vista speech API5.3以及WPF技术的语音朗读代码

闲暇无事，利用window SDK 与vs2008,基于Windows Vista speech API5.3以及WPF技术开发了一套语音朗读的代码，

牛刀小试，

using System;

using System.Collections.Generic;

using System.Text;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Shapes;

using System.Collections.ObjectModel;

using System.Xml;

using System.Speech.Synthesis;

namespace speechSynth

{

///

public partial class Window1 : System.Windows.Window

{

private SpeechSynthesizer synth;

public Window1()

{

InitializeComponent();

synth = new SpeechSynthesizer();

synth.StateChanged += new EventHandler(synth_StateChanged);

synth.BookmarkReached += new EventHandler(synth_BookmarkReached);

synth.PhonemeReached += new EventHandler(synth_PhonemeReached);

synth.SpeakCompleted += new EventHandler(synth_SpeakCompleted);

synth.SpeakProgress += new EventHandler(synth_SpeakProgress);

synth.SpeakStarted += new EventHandler(synth_SpeakStarted);

synth.VisemeReached += new EventHandler(synth_VisemeReached);

synth.VoiceChange += new EventHandler(synth_VoiceChange);

this.btnSpeakText.Click += new RoutedEventHandler(btnSpeakText_Click);

this.btnWavFile.Click += new RoutedEventHandler(btnWavFile_Click);

this.btnVoices.Click += new RoutedEventHandler(btnVoices_Click);

this.btnSpeakSsml.Click += new RoutedEventHandler(btnSpeakSsml_Click);

this.btnPause.Click += new RoutedEventHandler(btnPause_Click);

this.btnResume.Click += new RoutedEventHandler(btnResume_Click);

this.btnPromptBuilder.Click += new RoutedEventHandler(btnPromptBuilder_Click);

this.btnToXml.Click += new RoutedEventHandler(btnToXml_Click);

this.btnSsmlPitch.Click += new RoutedEventHandler(btnSsmlPitch_Click);

this.btnCutIn.Click += new RoutedEventHandler(btnCutIn_Click);

this.sliderRate.ValueChanged += new RoutedPropertyChangedEventHandler(sliderRate_ValueChanged);

this.sliderVolume.ValueChanged += new RoutedPropertyChangedEventHandler(sliderVolume_ValueChanged);

}

void btnCutIn_Click(object sender, RoutedEventArgs e)

{

synth.SpeakAsyncCancelAll(); //stops current async call

synth.SpeakAsync("this is some interrupting text"); //just appends, unless AsyncCancelAll() called first

//synth.Speak("this is some interrupting text"); //does not interrupt async call

}

void btnSsmlPitch_Click(object sender, RoutedEventArgs e)

{

XmlDocument xd = new XmlDocument();

xd.Load("ssmlPitch.xml");

synth.SpeakSsmlAsync(xd.OuterXml);

}

#region SYNTHESIZER_EVENTS

void synth_VoiceChange(object sender, VoiceChangeEventArgs e)

{

System.Diagnostics.Debug.WriteLine("VoiceChange : " + e.Voice.Name);

}

void synth_VisemeReached(object sender, VisemeReachedEventArgs e)

{

System.Diagnostics.Debug.WriteLine("VisemeReached : " + e.Viseme.ToString());

}

void synth_SpeakStarted(object sender, SpeakStartedEventArgs e)

{

System.Diagnostics.Debug.WriteLine("SpeakStarted");

}

void synth_SpeakProgress(object sender, SpeakProgressEventArgs e)

{

System.Diagnostics.Debug.WriteLine("SpeakProgress : " + e.AudioPosition.TotalSeconds.ToString());

}

void synth_SpeakCompleted(object sender, SpeakCompletedEventArgs e)

{

System.Diagnostics.Debug.WriteLine("SpeakCompleted");

}

void synth_PhonemeReached(object sender, PhonemeReachedEventArgs e)

{

System.Diagnostics.Debug.WriteLine("PhonemeReached : " + e.Phoneme.ToString());

}

void synth_BookmarkReached(object sender, BookmarkReachedEventArgs e)

{

System.Diagnostics.Debug.WriteLine("BookmarkReached : " + e.Bookmark);

}

void synth_StateChanged(object sender, StateChangedEventArgs e)

{

System.Diagnostics.Debug.WriteLine("StateChanged : " + e.State.ToString());

lblState.Content = e.State.ToString();

}

#endregion

void btnToXml_Click(object sender, RoutedEventArgs e)

{

PromptBuilder myPrompt = GetBuiltPrompt();

MessageBox.Show(myPrompt.ToXml());

}

void btnPromptBuilder_Click(object sender, RoutedEventArgs e)

{

PromptBuilder pb = GetBuiltPrompt();

//Now let's get the synthesizer to render this message

//SpeechSynthesizer synth = new SpeechSynthesizer();

synth.SetOutputToDefaultAudioDevice();

synth.SpeakAsync(pb);

}

private PromptBuilder GetBuiltPrompt()

{

//from ​​​prompt is quite complicated

//So I'm going to build it first, and then render it.

PromptBuilder myPrompt = new PromptBuilder();

//Start the main speaking style

PromptStyle mainStyle = new PromptStyle();

mainStyle.Rate = PromptRate.Medium;

mainStyle.Volume = PromptVolume.Loud;

myPrompt.StartStyle(mainStyle);

//Alert the listener

myPrompt.AppendAudio(new Uri("file://c://windows//media//notify.wav"), "Attention!");

myPrompt.AppendText("Here are some important messages.");

//Here's the first important message

myPrompt.AppendTextWithPronunciation("WinFX", "wɪnɛfɛks");

myPrompt.AppendText("is a great platform.");

//And the second one

myPrompt.AppendTextWithHint("ASP", SayAs.SpellOut);

myPrompt.AppendText("is an acronym for Active Server Pages. Whereas an ASP is a snake.");

myPrompt.AppendBreak();

//Let's emphasise how important these messages are

PromptStyle interimStyle = new PromptStyle();

interimStyle.Emphasis = PromptEmphasis.Strong;

myPrompt.StartStyle(interimStyle);

myPrompt.AppendText("Please remember these two things.");

myPrompt.EndStyle();

//Then we can revert to the main speaking style

myPrompt.AppendBreak();

myPrompt.AppendText("Thank you");

myPrompt.EndStyle();

return myPrompt;

}

void btnResume_Click(object sender, RoutedEventArgs e)

{

synth.Resume();

}

void btnPause_Click(object sender, RoutedEventArgs e)

{

synth.Pause();

}

void btnSpeakSsml_Click(object sender, RoutedEventArgs e)

{

//xd = new XmlDocument();

xd.Load("sampleSSML.xml"); //works

//xd.Load("ssmlPitch.xml"); //works

//synth.SpeakSsmlAsync(xd.OuterXml);

//XmlDocument xd = new XmlDocument();

xd.Load("sampleSSML.xml"); //TODO doesn't work?

//xd.Load("ssmlPitch.xml"); //TODO doesn't work?

//PromptBuilder pb = new PromptBuilder();

//pb.AppendSsmlMarkup(xd.DocumentElement.OuterXml);

//synth.SpeakAsync(pb);

PromptBuilder pb = new PromptBuilder();

pb.AppendText("blah");

pb.AppendSsml("sampleSSML.xml"); //works

//pb.AppendSsml("ssmlPitch.xml"); //TODO doesn't work

synth.SpeakAsync(pb);

}

void sliderVolume_ValueChanged(object sender, RoutedPropertyChangedEventArgs e)

{

synth.Volume = (int)sliderVolume.Value;

}

void sliderRate_ValueChanged(object sender, RoutedPropertyChangedEventArgs e)

{

synth.Rate = (int)sliderRate.Value;

}

void btnVoices_Click(object sender, RoutedEventArgs e)

{

ReadOnlyCollection voices = synth.GetInstalledVoices();

string retVal = String.Empty;

foreach (InstalledVoice iv in voices)

{

retVal += iv.VoiceInfo.Name + "/r/n";

}

MessageBox.Show(retVal);

}

void btnWavFile_Click(object sender, RoutedEventArgs e)

{

synth.SetOutputToWaveFile("spoken.wav");

synth.Speak(GetText());

synth.SetOutputToNull();

MessageBox.Show("done");

}

void btnSpeakText_Click(object sender, RoutedEventArgs e)

{

synth.SetOutputToDefaultAudioDevice();

synth.SpeakAsync(GetText());

}

private string GetText()

{

return txtToSpeak.Text.Trim();

}

}

}

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