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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