Web Technology VoiceXML _ Voice eXtensible Markup Language

							VoiceXML
( Voice eXtensible Markup Language )


Student : 鍾誌文 資工四年級

Department of Computer Science and
Information Engineering
National Chi Nan University
Introduction of VoiceXML
   Allows a user to interact with the Internet
    through voice-recognition technology.

   The user interacts with voice browser by
    listening to audio output.
Flow Chart
Architecture Model
Speech Interface Framework
    Scope of VoiceXML
   Output of synthesized speech(text to speech).
   Output of audio files.
   Recognition of spoken input.
   Recognition of DTMF input.
   Recording of spoken input.
   Control of dialog flow.
   Telephony features as call transfer and disconnect.
   VXML Sample
<?xml version="1.0"?>
<vxml version="2.0" xmlns="http://www.w3.org/2001/vxml">
   <form>
   <field name="drink">
     <prompt>Would you like coffee,tea, milk, or
nothing?</prompt>
     <grammar src="drink.grxml" type="application/srgs+xml"/>
   </field>
   <block>
     <submit next="http://www.drink.example.com/drink2.asp"/>
   </block>
  </form>
</vxml>
     Example:
C(computer)   Would you like coffee, tea, milk, or nothing?
:


H(human):     Orange juice.
C:            I did not understand what you said.(a platfrom-specific default
              message.)
C:            Would you like coffee, tea, milk or nothing?


H:            Tea
C:            (continues in document drink2.asp)
   Beyond VoiceXML
You:      Will it rain tomorrow in Boston?

System:   To my knowledge, the forecast calls for no rain tomorrow in
          Boston.
You:      What about Detroit?

System:   To my knowledge, the forecast calls for no rain tomorrow in
          Detroit.
You:      I'm interested in floods.

System:   Flood warnings have been issued for Louisiana and Mississippi.

You:      Will it be sunny in Phoenix?
References
   VoiceXML Forum http://www.w3.org/TR/voicexml20
   W3C Voice Browser Activity
    http://www.w3c.org/voice
   TellMe http://www.Tellme.com
   Nuance http://www.nuance.com