Sidebar: Standards power speech apps

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August 22, 2005 (Computerworld) -- The market for proprietary hardware and software tools is disappearing, driven by the emergence of open standards such as VoiceXML and Speech Application Language Tags (SALT). Here's a look at the existing and emerging standards in speech application development.

• VoiceXML
  
  This World Wide Web Consortium Inc. (W3C) standard is an open standard that establishes a common dialog for speech-enabled interactive voice-response (IVR) applications. VoiceXML, which separates the application from the hardware, is well established and supported by most IVR vendors.


• SALT
  
  A competing open standard to VoiceXML, SALT, promoted by Microsoft Corp., focuses on multimodal interactions, where voice may be combined with other forms of input, such as a Web page. The W3C is considering integrating some aspects of SALT into Version 3.0 of VoiceXML.


• Call Control XML
  
  CCXML is companion standard to voice XML. It specifies a complementary language that adds support for call-control functions such as conferencing and call management.


• Media Resource Control Protocol
  
  MRCP, an Internet Engineering Task Force draft standard, places an XML wrapper around speech-recognition output, creating an abstraction layer between the application and the underlying speech-recognition engine. While some products already claim to support MRCP, it isn't yet considered a mature standard.

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• Sidebar: When hosted services take the call
• Sidebar: Standards power speech apps
• Sidebar: Pros and Cons
• Smart Talk: Speech-enabled apps deliver bottom-line benefits

• Powerset unveils test version of Google-killer
• iPhone out of stock 'company wide,' say Apple sales reps
• Microsoft to limit capabilities of cheap laptops
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