Text to Speech, System.Speech.
The Microsoft .Net Framewok version 3.0 introduces the long awaited System.Speech
assembly. With the System.Speech assembly you can create speech enabled Windows
applications including, Text to Speech and Speech recognition.
Namespace: System.Speech
Assembly: Systems.Speech.dll
using System.Speech;
Calling: System.Speech
Requirements:
.Net FrameWork 3.0
Download the complete project here. Requirements, VisualStudio
2005 and .Net 3.0
Creating Speech enabled Windows applications could not be easier. To prove to you
just how easy it is, lets create a simple yet powerful Text to Speech application.
We are going to create a Single document interface, add a menu, context menu, status
bar and use a richtextbox control for our textarea.
To start, open Visual Studio 2005, create a new Windows c# project. Add a reference
to the System.Speech assembly. On Form1 or mainForm add a statusBar, context menu,
MenuStrip and a richTextBox which will be docked to fill the form.
Declare your SpeechSynthesizer speakRBox.
System.Speech.Synthesis.SpeechSynthesizer speakRBox = new System.Speech.Synthesis.SpeechSynthesizer();
On the MenuStrip, create Speak, Pause and Stop menu items. Create the Click events
for the menu items just created. Under the Speak event add the following code.
if (speakRBox.State == System.Speech.Synthesis.SynthesizerState.Ready) { speakRBox.SpeakProgress
+= new EventHandler(speakRBox_SpeakProgress);
speakRBox.SpeakCompleted += new EventHandler(speakRBox_SpeakCompleted);
speakRBox.SelectVoice(toolStripComboBox1.SelectedItem.ToString()); speakRBox.SpeakAsync(this.richTextBox1.Text);
return; } if (speakRBox.State == System.Speech.Synthesis.SynthesizerState.Paused)
{ speakRBox.Resume(); }
Under the Pause event, add the following code.
if (speakRBox.State == System.Speech.Synthesis.SynthesizerState.Speaking) { speakRBox.Pause();
this.toolStripStatusLabel1.Text = "Paused"; return; } if (speakRBox.State == System.Speech.Synthesis.SynthesizerState.Paused)
{ speakRBox.Resume(); }
Under the Stop event.
if (speakRBox.State == System.Speech.Synthesis.SynthesizerState.Speaking) { speakRBox.SpeakAsyncCancelAll();
}
Additional things to do.
You can add the feature of speaking the text to a wav file for later play back.
To do this, add a menu item and create a click event. Under the click event add
the following code.
speakRBox.SetOutputToWaveFile(@"c:\1.wav");
speakRBox.SpeakAsync("Hello World");
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