VoiceXML, an XML vocabulary for specifying IVR (Integrated Voice Response) Systems was submitted to the W3C more than one year ago. Initially it received little attention but now with more services like Tellme and BeVocal providing developer platforms for such applications the interest level has risen dramatically in the last couple of months.
VoiceXML is designed for creating audio dialogs that feature synthesized speech, digitized audio, recognition of spoken and DTMF key input, recording of spoken input, telephony, and mixed-initiative conversations. Its major goal is to bring the advantages of Web-based development and content delivery to interactive voice response applications.
The language describes the human-machine interaction provided by voice response systems, which includes:
Output of synthesized speech (text-to-speech).
