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SpeechSynthesizer.SetOutputToWaveFile Method (String)

Configures the SpeechSynthesizer object to append output to a file that contains Waveform format audio.

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

public void SetOutputToWaveFile(
	string path


Type: System.String

The path to the file.

To configure the output and specify the audio format, use the SetOutputToWaveFile method.

The following example uses an instance of SoundPlayer to play a prompt that has been output to a .wav file. Because the SpeakAsync call is asynchronous, the SoundPlayer instance is created (and the Play method invoked) in the handler for the SpeakCompleted event.

using System;
using System.Speech.Synthesis;

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

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

      // Configure the audio output. 

      // Register for the SpeakCompleted event.
      synth.SpeakCompleted += new EventHandler<SpeakCompletedEventArgs>(synth_SpeakCompleted);

      // Build a prompt.
      PromptBuilder builder = new PromptBuilder();
      builder.AppendText("This sample asynchronously speaks a prompt to a WAVE file.");
      // Speak the string asynchronously.

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

    // Handle the SpeakCompleted event.
    static void synth_SpeakCompleted(object sender, SpeakCompletedEventArgs e)

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

      //  Play the output file.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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