SpeechSynthesizer.BookmarkReached Event

Raised when the SpeechSynthesizer encounters a bookmark in a prompt.

Namespace:  Microsoft.Speech.Synthesis
Assembly:  Microsoft.Speech (in Microsoft.Speech.dll)

Syntax

'Declaration
Public Event BookmarkReached As EventHandler(Of BookmarkReachedEventArgs)
'Usage
Dim instance As SpeechSynthesizer
Dim handler As EventHandler(Of BookmarkReachedEventArgs)

AddHandler instance.BookmarkReached, handler

public event EventHandler<BookmarkReachedEventArgs> BookmarkReached

Remarks

The SpeechSynthesizer raises this event while processing any of the Speak(), SpeakAsync(), SpeakSsml(String), or SpeakSsmlAsync(String) methods. For information about data associated with the event, see BookmarkReachedEventArgs.

You can add bookmarks using the AppendBookmark(String) method.

Examples

The following example creates a prompt that includes two bookmarks and sends the output to a WAV file for playback. The handler for the BookmarkReached event writes the name of the bookmark and its position in the audio stream when the event was raised to the console.

using System;
using Microsoft.Speech.Synthesis;

namespace SampleSynthesis
{
  class Program
  {
    static void Main(string[] args)
    {

      // Initialize a new instance of the SpeechSynthesizer.
      using (SpeechSynthesizer synth = new SpeechSynthesizer())
      {

        // Configure the audio output. 
        synth.SetOutputToWaveFile(@"C:\test\weather.wav");

        // Create a SoundPlayer instance to play the output audio file.
        System.Media.SoundPlayer m_SoundPlayer =
          new System.Media.SoundPlayer(@"C:\test\weather.wav");

        // Build a prompt and append bookmarks.
        PromptBuilder builder = new PromptBuilder(
          new System.Globalization.CultureInfo("en-US"));
        builder.AppendText(
          "The weather forecast for today is partly cloudy with some sun breaks.");
        builder.AppendBookmark("Daytime forecast");
        builder.AppendText(
          "Tonight's weather will be cloudy with a 30% chance of showers.");
        builder.AppendBookmark("Nightime forecast");

        // Add a handler for the BookmarkReached event.
        synth.BookmarkReached +=
          new EventHandler<BookmarkReachedEventArgs>(synth_BookmarkReached);

        // Speak the prompt and play back the output file.
        synth.Speak(builder);
        m_SoundPlayer.Play();
      }

      Console.WriteLine();
      Console.WriteLine("Press any key to exit...");
      Console.ReadKey();
    }

    // Write the name and position of the bookmark to the console.
    static void synth_BookmarkReached(object sender, BookmarkReachedEventArgs e)
    {
      Console.WriteLine("Bookmark ({0}) reached at: {1} ",
        e.Bookmark, e.AudioPosition);
    }
  }
}

See Also

Reference

SpeechSynthesizer Class

SpeechSynthesizer Members

Microsoft.Speech.Synthesis Namespace