Pace VoiceXML Absentee System

1
Pace VoiceXML Absentee System
CS616 Software Engineering

• Paul Visokey, Ping Gallivan, Yani Mulyani,
• Lisa Jordan, Elaine Li, George Mathew, Qisheng
  Hong
• Presenter Name Paul Visokey

2
Project Goals

• Bring web-based development and content delivery
  to interactive voice response applications
• Create an application for tracking student class
  absences
• Convert application from TellMe portal to Ascent
  Technology hardware to enhance accessibility and
  reliability

3
Voice Applications

• Voice Recognition Voice recognition implies only
  that the computer can take dictation, not that it
  understands what is being said.
• Natural language processing Comprehending human
  languages falls under a different field of
  computer science called natural language
  processing.
• Speaker dependent systems-These systems
  generally require an extended training session
  during which the computer system becomes
  accustomed to a particular voice and accent.

4
Voice Applications Cont

• Discrete speech systemsMany systems require
  that the speaker speak slowly and distinctly and
  separate each word with a short pause. These
  systems are called discrete speech systems.
• Continuous speech systemsThese are voice
  recognition systems that allow you to speak
  naturally. Speech Recognition is the engine that
  drives interactive voice applications

5
Voice applications in past and today

• Traditionally, voice applications proprietary
  Voice Response systems, text-to-speech conversion
  software (TTS), and commercial automatic speech
  recognition software (ASR)
• Today, VoiceXML coders can employ free VoiceXML
  gateways, such as VoiceGenie and TellMe, to
  speak the pages they are developing
• The computer of the future understands what we
  say, will talk to us, show us images and movies,
  and fit in a palm

•  

6
XML and VoiceXML, HTML

• Applications using XML technologies should be
  accessible on three different devices The
  telephone (VoiceXML), Mobile phone mini browsers
  (WML), PC browsers (HTML).
• To realize this vision, we will create abstract
  models and encode them in XML, must recognize the
  device, transform these models into the
  appropriate rendering forma

7
Web Architecture
8
Technology Analysis
9
Technology Analysis, Cont

• Voice Web Technology
• VoiceXML Schema of XML
• Visual Web Technology
• PHP , HTML, JavaScript
• Database MySQL

http//geocities.com/project_team4/
FOR MORE INFO...
http//www.w3.org/2001/vxml
10
VoiceXML Introduction

• an XML language for writing Web pages you
  interact with by listening to spoken prompts and
  jingles, and control by means of spoken input.
• VoiceXML brings the Web to telephones, assumes a
  voice browser with audio output and audio input

FOR MORE INFO...
http//www.w3.org/Voice/Guide/
11
VoiceXML Architecture
12
VoiceXML Concepts

• Dialogs ( 2 Kinds) forms and menus
• Subdialogs a mechanism for invoking a new
  interaction, and returning to the original form
• Sessions begins when the user starts to interact
  with a VoiceXML interpreter and continues as
  VoiceXML documents are loaded and unloaded.

13
VoiceXML Grammars

• They specify what spoken words to listen for and
  how to interpret them, Grammar defines what is
  valid user input
• Each dialog has one or more speech and/or DTMF
  grammars associated with it
• Grammars can be active for the entire
  application, a document, a form, or a field, and
  active only when the user is in that dialog

14
Grammars Cont

• In a VoiceXML application, grammar represents the
  point  where the user's voice or input is
  compared against a set of acceptable responses
• The default scope for a grammar is the element in
  which it is defined.
• Grammars are either defined in the application or
  called from an external file

15
Grammar Example

• ltfield name"courseid"gt
• ltpromptgtPlease say the course i dlt/promptgt
• ltgrammargt
• lt!CDATA
• (Char_speakd1 Char_speakd2 Dig_speakd3
  Dig_speakd4 Dig_speakd5)
• ltoption strcat(d1 strcat(d2 strcat(d3
  strcat(d4 d5))))gt
• (cancel) ltoption "cancel"gt
• Char_speak
• creturn(c)
• sreturn(s)
• Dig_speak
• one return(1)
• two return(2)

16
VoiceXML documents Execution within one
document

• Documents define applications as a set of named
  dialog states , document execution begins at the
  first dialog by default
• As each dialog executes, it determines the next
  dialog.
• When a dialog doesn't specify a successor dialog,
  document execution stops.

17
VoiceXML documents Executing a multi-document
application

• Transition of documents in an application that
  sharing the same root document, and refer it in
  the other documents ltvxmlgt elements

18
VoiceXML Documents Cont
 

• A VoiceXML document contains a single ltvxmlgt
  element, which is the root element.
• Each ltfieldgt element should contain a ltgrammargt
  element.

19
VoiceXML Example

• lt? XML version 1.0?gt
• lt vxml version1.0gt
• ltformgt
• ltfield namedrink gt
• ltpromptgtwould you like coffee,tea,milk?
  lt/promptgt
• ltgrammar srcdrink.gram
• typeapplication/x-jsgf/gt
  
• lt/field gt
• ltblockgt
• ltsubmit nexthttp//www.drink.example/drink2.
  asp/gt
• lt/blockgt
• lt/formgt
• lt/vxmlgt

20
Tellme Studio

• Platform

21
TellMe Studio Grammars

• TellMe Studio Grammar Library
• Define Own Grammar using
• a) Nuance Grammar Specification Language
• b) Speech Grammar Markup Language
• (GRXML)

22
Description of Application

• VoiceXML Absentee system will receive and track
  student absences via phone calls and /or website
  entries.
• The system provides the instructor and other
  administrators with a permanent record of
  absentees that can be accessed and displayed
  through a Web interface

FOR MORE INFO...
http//www.csis.pace.edu/ctappert/cs615-01/defaul
t.htm
23
Work Flow of Absentee System
Internet
PSTN
VoiceXML
VoiceXML
HTTP
Automatic Dialog
Web server
HTTP
Student ID etc
Student Database
VoiceXML Browser
Student
24
Technology---Absentee System

• TellMe Studio technology platform being used
  (1800-555-VXML)
• VoiceXML 1.0 Standards being adopted
• demo

25
Current Status

• VoiceXML Testing Based TellMe Studio in CS616
• Behind in Ascent Technology Portal Facility
• Terminate Absentee phone number on browser
• Point browser to Pace Utopia server
• Test browser compatibility with VoiceXML version
  1.0 Absentee application

26
Voice Absentee System Resources

• Equipment,
• ASCENT hardware, PACE VoiceXML Lab
• _ Support outside services
• TellMe Studio

27
Related Documents

• http//csis.pace.edu/ctappert/cs616-02/default.ht
  m
• http//studio.tellme.com/
• http//www.voicexml.org

28
Questions?