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Navigable, Customizable TTS for Algebra. Lois Frankel Educational Testing Service (ETS) Neil Soiffer Design Science, Inc . CSUN March 1, 2013. Presentation Overview. Project Motivation, Goals, and Background Development to date: discussion and demonstration Research Studies Next Steps.

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navigable customizable tts for algebra
Navigable, Customizable TTS for Algebra

Lois Frankel

Educational Testing Service (ETS)

Neil Soiffer

Design Science, Inc.

CSUN

March 1, 2013

presentation overview
Presentation Overview
  • Project Motivation, Goals, and Background
  • Development to date: discussion and demonstration
  • Research Studies
  • Next Steps
project motivation
Handouts are available at: www.atia.org/orlanohandoutsProject Motivation
  • Text-to-speech (TTS) vs. Math-to-speech
    • Limited choice of syntax/semantics
    • Limited screen-reader support
    • Limited or no within-expression navigation
    • Difficult to author
    • Works in limited environments
  • ETS Experience
project goals
Handouts are available at: www.atia.org/orlandohandoutsProject Goals
  • Focus on instruction, not assessment
  • High school algebra
  • Classroom-like synthesized speech “style”: ClearSpeak
  • Customization features
  • Interactive navigation
  • Author in Word
  • Playback in Word and IE
not part of project
Handouts are available at: www.atia.org/orlandohandoutsNot Part of Project
  • Braille
  • Support for other formats
  • Authoring by people with visual impairment
  • Solving math problems
  • Tutoring/Curriculum
  • Integration with standardized testing
behind the scene mathml
Handouts are available at: www.atia.org/orlandohandoutsBehind the Scene: MathML
  • The language of math on the web
    • HTML5, eBooks
    • Browser support & MathJax
  • Designed for Accessibility
    • Daisy players
    • IE + MathPlayer + AT
what is mathml
Handouts are available at: www.atia.org/orlandohandoutsWhat is MathML?

<math><mroot><mi>x</mi><mn>3</mn></mroot></math>

project software for math
Project Software for Math
  • MathML Tools:
    • Authoring: MathType+Word
    • Audio rendering: MathPlayer
  • Screen reader
    • Window-Eyes (Word & IE)
clearspeak
Handouts are available at: www.atia.org/orlandohandoutsClearSpeak
  • Many ways to speak math
  • ClearSpeak design philosophy
  • Other design philosophies
    • MathSpeak
    • SimpleSpeech
demonstration
Handouts are available at: www.atia.org/orlandohandoutsDemonstration
  • Authoring
    • Using MathType in Word to enter math and use preferences
    • Entering exact speech in Word
  • Playback
    • Word with Window-Eyes
project goals recap
Handouts are available at: www.atia.org/orlandohandoutsProject Goals Recap
  • ClearSpeak
  • Author in Word
    • Allow setting preference and exact speech
  • Playback in Word and IE
  • Interactive navigation
creating expressions and questions for studies
Creating Expressions and Questions for Studies
  • Level
  • Degree of complexity
  • Relevance of speech variations
  • Provide useful data
    • Test comprehension, not computation
    • Guide decisions about speech rules, preferences
feedback study 1
Handous are available at: www.atia.org/orlandohandoutsFeedback Study #1
  • Compared ClearSpeak, MathSpeak, SimpleSpeech
  • Fractions, exponents, parentheses
  • Focus: was expression understood?
  • Research/Statistical consultation
  • 16 HS students: blind or low vision
results summary
Handouts are available at: www.atia.org/orlandohandoutsResults Summary
  • ClearSpeak more understandable than Simple Speech or MathSpeak
  • Students overall preferred ClearSpeak
  • Students got more answers correct with ClearSpeak than with Simple Speech or MathSpeak
feedback study 2
Handouts are available at: www.atia.org/orlandohandoutsFeedback Study #2
  • Can Prosody help understanding?
    • Pauses
    • Pitch
    • Rate Changes
    • Volume Changes
  • Rejected pitch and volume changes
  • non-speech sounds not an option
  • Focus on pauses, rate-change vs. start/end
feedback 2 example
Handouts are available at: www.atia.org/orlandohandoutsFeedback #2 Example

vs.

  • With Pauses / rate change
    • Expression 1
    • Expression 2
  • With “end root”
    • Expression 1
    • Expression 2
feedback 2 another example
Handouts are available at: www.atia.org/orlandohandoutsFeedback #2 Another Example

Nested Parentheses:

  • Uniform Pauses
  • Non-uniform pauses
  • Non-uniform pauses and “First Paren”
navigation
Handouts are available at: www.atia.org/orlandohandoutsNavigation
  • Simple char by char mode for beginners
  • Powerful navigation features for experts
    • Read
    • Describe
  • Multiple ways of moving
    • Tree
    • Character, Placemarker, Semantic
  • After tree move: read or describe
  • 10 Placemarkers, 2 Cursors, Where am I?
contact information
Handouts are available at: www.atia.org/orlandohandoutsContact Information

The research reported here was supported by the Institute of Education Sciences, U.S. Department of Education, through Grant R324A110355 to the Educational Testing Service. The opinions expressed are those of the authors and do not represent views of the Institute or the U.S. Department of Education.

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