ns-System.Speech.Synthesis.TtsEngine.xml

<Namespace Name="System.Speech.Synthesis.TtsEngine">
  <Docs>
    <summary>Supports the creation of Speech Synthesis Markup Language (SSML) based custom engines for rendering text to speech (TTS).</summary>
    <remarks>
      <format type="text/markdown"><![CDATA[  
  
## Remarks  
 The members of the <xref:System.Speech.Synthesis.TtsEngine> namespace make available Windows Desktop Speech Technology support for Speech Synthesis Markup Language (SSML) based markup language and the construction of synthetic speech engines.  
  
 The SSML markup language is the industry standard to provide a rich, XML-based language for assisting the synthetic speech engines. It is endorsed by Microsoft and our competitors. For more information on SSML, see [Speech Synthesis Markup Language Specification](http://go.microsoft.com/fwlink/?LinkId=15144).  
  
 Creating of a new of synthetic speech engine using <xref:System.Speech.Synthesis.TtsEngine> requires the implementation and registration of an object derived from the abstract base class <xref:System.Speech.Synthesis.TtsEngine.TtsEngineSsml>.  
  
 <xref:System.Speech.Synthesis.TtsEngine> based synthetic speech engines are accessed through Windows Desktop Speech Technology infrastructure, using the tools in the <xref:System.Speech.Synthesis> namespace, in particular <xref:System.Speech.Synthesis.SpeechSynthesizer> object, and are never directly used by applications.  
  
 The Windows Desktop Speech Technology infrastructures ensures that all parameters passed to a synthetic speech engine are validated and thread synchronized.  
  
 A of synthetic speech engine implemented using <xref:System.Speech.Synthesis.TtsEngine> technology can:  
  
-   Receive input, (see <xref:System.Speech.Synthesis.TtsEngine.TtsEngineSsml.Speak%2A>,.<xref:System.Speech.Synthesis.TtsEngine.TextFragment>, <xref:System.Speech.Synthesis.TtsEngine.FragmentState>, and <xref:System.Speech.Synthesis.TtsEngine.SkipInfo> )  
  
-   Queue events, and specify actions (see <xref:System.Speech.Synthesis.TtsEngine.TtsEngineAction>, <xref:System.Speech.Synthesis.TtsEngine.ITtsEngineSite>, <xref:System.Speech.Synthesis.TtsEngine.EventParameterType>, <xref:System.Speech.Synthesis.TtsEngine.SpeechEventInfo>).  
  
-   Control the control the pitch, speaking rate and volume of the speech output (see <xref:System.Speech.Synthesis.TtsEngine.ContourPoint>, <xref:System.Speech.Synthesis.TtsEngine.ContourPointChangeType>, <xref:System.Speech.Synthesis.TtsEngine.EmphasisBreak>, <xref:System.Speech.Synthesis.TtsEngine.EmphasisWord>, <xref:System.Speech.Synthesis.TtsEngine.Prosody>, <xref:System.Speech.Synthesis.TtsEngine.ProsodyNumber>, <xref:System.Speech.Synthesis.TtsEngine.ProsodyPitch>, <xref:System.Speech.Synthesis.TtsEngine.ProsodyRange>, <xref:System.Speech.Synthesis.TtsEngine.ProsodyRate>, <xref:System.Speech.Synthesis.TtsEngine.ProsodyUnit>, and <xref:System.Speech.Synthesis.TtsEngine.ProsodyVolume>)  
  
-   Determine usage and output target of speech synthesis (see <xref:System.Speech.Synthesis.TtsEngine.SayAs>, <xref:System.Speech.Synthesis.TtsEngine.SpeakOutputFormat>)  
  
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    </remarks>
  </Docs>
</Namespace>