title: NAudio Play Silence without speakers
body: <p>I know that I can play silence audio like that </p>
  
  <pre><code>var silence = new SilenceProvider(sourceStream?.WaveFormat).ToSampleProvider();
  wo = new WaveOutEvent();              
  wo.Init(silence);
  wo.Play();
  </code></pre>
  
  <p>but How can I play silence when no speakers are attached to the computer?</p>
  
  <blockquote>
    <p>I want to capture realtime WASAPI audio but the callback don't get called up when nothing is playing, so I need to play silence</p>
  </blockquote>