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Development and Initial Evaluation of the ClearSpeak Style for Automated Speaking of Algebra STEM

Frankel, Lois; Brownstein, Beth; Soiffer, Neil; Hansen, Eric G.
Publication Year:
Report Number:
ETS Research Report
Document Type:
Page Count:
Subject/Key Words:
Accessibility, Blindness, Visual Impairment, Computer-Synthesized Text-to-Speech, Mathematical Markup Language (MathML), Algebra, Science, Technology, Engineering and Mathematics (STEM), Assistive Technologies, Audio Response System, Secondary Education, ClearSpeak


In addition to wording, speech styles can specify pausing (or other prosodic cues) within the speech. The ClearSpeak style focuses on speech for secondary school algebra. The evaluation compares a prototype of the ClearSpeak style to two pre-existing speech styles: MathSpeak and SimpleSpeak. The primary parameters evaluated are students' success in drawing conclusions about the content and structure of math expressions and their perceptions regarding the familiarity, helpfulness, and understandability of the expressions as spoken. Please see Appendix E for information on obtaining a version of this report that is fully accessible using the tools described.

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