83150286 voice browser
TRANSCRIPT
WELCOME
Voice Browser
Presented BySharmin Sirajudeen
S7 CSReg No : 07412017
What is a Voice Browser?
A voice browser is a device :
that interprets voice input and interprets voice markup languages to generate voice output.
that interprets a script which specifies exactly what to verbally present to the user as well as when to present each piece of information.
MotivationThere are 10 times as many telephones as
connected PCs.Cell phones usage is growing dramatically. Speaking and listening are the natural usage
modes for modes.
OverviewTime frame: 1998 to ??Hands-free accessing of web.Pragmatic interface for functionally blind
users.
Key TechnologiesSpeech Recognition Speech Synthesis
Speech Recognition
Voice input VoXML file Text
Speech Synthesis
Text VoXML file Output(Pre-recorded)
Standardization World Wide Web Consortium(W3C)
Voice Browser Working GroupSpeech Interface Framework
W3C Voice Browser Working Group
Established on 26 March 1999.Re-chartered through 31 January 2009.W3C Team Contacts are Kazuyuki Ashimura
and Matt Womer.Co-chaired by Jim Larson and Scott
McGlashan .
Speech Interface FrameworkVoiceXML 1.0VoiceXML 2.0VoiceXML 2.1Voice XML 3.0Speech Recognition Grammar Specification (SRGS) 1.0Speech Synthesis Markup Language (SSML) 1.0Speech Synthesis Markup Language (SSML) 1.1Call Control XML (CCXML)State Chart XML (SCXML)Semantic Interpretation (SISR) 1.0Pronunciation Lexicon Specification (PLS) 1.0
Voice XML(VoXML)Version 1.0 - designed for creating audio dialogs
.Version 2.0 - uses form interpretation
algorithm(FIA).Version 2.1 - 8 additional elements.Version 3.0 - relationship between
semantics and (31 August 2010) syntax.
What about HTML ?HTML don’t have
Tampered promptsGrammar specifying alternative words that the
user can speak in response to the question.Instructions to the text-to-speech synthesizer
about how to say words and phrases.
Adding these capabilities would complicate HTML,a language developed just for visual UI.
Speech Recognition Grammar Specification(SRGS)Version 1.0 -for specifying grammars of each
user input to a speech application.
Speech Synthesis Markup Language(SSML)Version 1.0 -for specifying the rendering of
synthesized speech to the user.Version 1.1 - enhancement of SSML 1.0 for
better support of the world's languages including Asian, Eastern European, and Middle Eastern languages.
Call Control XML(CCXML) For specifying call control functions
State Chart XML(SCXML) Execution environment based on CCXML
and Harel State Tables.
Semantic Interpretation Speech Recognizer(SISR) Version 1.0 - For specifying possible
translation of text from the output of a speech recognizer.
Pronunciation Lexicon Specification (PIS)
Version 1.0 - Syntax for specifying pronunciation lexicons to be used by Speech Recognition and Speech Synthesis.
Model Architecture
ApplicationsIt can be divided into three categories :
Web BrowsingLimited information AccessSpoken Dialog Systems
Web BrowsingBrowse any web pages using speech input.Parsing for the purpose of voice recognition
done when the page is accessed.May or may not produce a voice feed back.
Limited Information AccessUseful information in limited domains like
weather in a city, checking stock updates etc.Audio feed back
Spoken Dialog SystemsClient-server architecture is usedUsed for connecting to a remote server by a
Java applet(client).Examples are connecting to email servers
BenefitsVoice is a very natural user interface which
speeds up browsing.Less space requirements.Portable voice browsers can also be
implemented.Practical interface for functionally blind
users.Users can browse web while keeping there
hands and eyes for other jobs
FutureVoice browsing will become visual(Multi-
modal)Can be integrated to an OSIntegrated to every application.
ConclusionsBrowser technology is changing very fast
these days and we are moving from the visual paradigm to the voice paradigm.
Voice browser is the technology to enter this paradigm.
Voice browser is a device which interpret voice input and generate voice output.
Referenceshttp://www.w3.org/standards/webofdevices/
voicehttp://xml.coverpages.org/ccxml.htmlhttp://reactos.ccp14.ac.uk/Voice/http://www.w3.org/Voice/1998/Workshop/
PhilJenkins.html (for IBM)
THANK YOU
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