Basic Structure

<speak version="1.0" xml:lang="en-US">
  Your text here
</speak>

Pauses

<break time="3s"/>

Add pauses with duration in seconds (s) or milliseconds (ms)

Emphasis

<emphasis level="strong">emphasized text</emphasis>

Levels: strong, moderate, reduced

Speech Rate

<prosody rate="slow">slower speech</prosody>
<prosody rate="fast">faster speech</prosody>
<prosody rate="150%">50% faster</prosody>