SpeechSynthesizer.BookmarkReached Event

Definition

Namespace:

System.Speech.Synthesis

Assembly:

System.Speech.dll

Package:

System.Speech v9.0.0

Source:

SpeechSynthesizer.cs

Raised when the SpeechSynthesizer encounters a bookmark in a prompt.

public:
 event EventHandler<System::Speech::Synthesis::BookmarkReachedEventArgs ^> ^ BookmarkReached;

public event EventHandler<System.Speech.Synthesis.BookmarkReachedEventArgs> BookmarkReached;

member this.BookmarkReached : EventHandler<System.Speech.Synthesis.BookmarkReachedEventArgs> 

Public Custom Event BookmarkReached As EventHandler(Of BookmarkReachedEventArgs) 

Event Type

EventHandler<BookmarkReachedEventArgs>

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 System.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("Nighttime 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);
    }
  }
}

Remarks

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

You can add bookmarks using the AppendBookmark method.