W3C Speech Markup

• Speech Synthesis Markup Language (SSML) [7].

    <speak>
      <p>Take a deep breath <break strength="weak"/> then
      <prosody rate="-10%">speak slower</prosody>.</p>
    
      <p>Also <prosody volume="loud">raise your voice</prosody>
      so everyone will hear you.</p>
    </speak>

• Aural style sheets [8]

  h1 { voice-stress:strong;        voice-rate:-10%;        pause-after: 20ms;   }   msqrt.before { content: "Square root: " }   msqrt.after  { content: "End root. " }

• Draft proposals.

  Good speech browsers unavailable.

  No support from TeX4ht.