public void TestDistortion() { EventWaitHandle waitHandle = new AutoResetEvent(false); using (MemoryStream stream = new MemoryStream()) using (SpeechSynthesizer synth = new SpeechSynthesizer()) { foreach (InstalledVoice voice in synth.GetInstalledVoices()) { Console.WriteLine(voice.VoiceInfo.Name); } synth.SetOutputToWaveStream(stream); synth.Speak("Anaconda golf foxtrot lima one niner six eight requesting docking."); stream.Seek(0, SeekOrigin.Begin); IWaveSource source = new WaveFileReader(stream); DmoDistortionEffect distortedSource = new DmoDistortionEffect(source); distortedSource.Edge = 10; distortedSource.PreLowpassCutoff = 4800; var soundOut = new WasapiOut(); soundOut.Stopped += (s, e) => waitHandle.Set(); soundOut.Initialize(distortedSource); soundOut.Play(); waitHandle.WaitOne(); soundOut.Dispose(); distortedSource.Dispose(); source.Dispose(); } }