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A Preliminary Study on Digital Audio Quality for Web-based English Listening Comprehension Tests
PROCEEDINGS

, Bowling Green State University, United States ; , , North China University of Technology, China ; , The University of Toledo, United States

EdMedia + Innovate Learning, in Toronto, Canada ISBN 978-1-880094-81-5 Publisher: Association for the Advancement of Computing in Education (AACE), Waynesville, NC

Abstract

Abstract: This study examined the effects of digital audio quality on students’ performance in a web based English listening comprehension test. Based on the data collected through the English listening comprehension test participated by 335 EFL students, the effects of three different sample rates (44 kHz, 22 kHz and 11 kHz) and two different sample depths (16 bit and 8 bit) were compared by using 2 x 3 ANOVA. The results show that students tested with 44 kHz audio and 22 kHz audio performed significantly better than those tested with 11 kHz audio, but students tested with 16 bit audio did not perform significantly better than those tested with 8 bit audio. No interaction effect was found between sample rate and sample depth. The researchers concluded that 22 kHz and 8 bit provide the best sample rate and sample depth combination for digitizing audio for web-based English listening comprehension tests.

Citation

Yang, X., Gao, Y., Zhang, Y. & Xiao, M. (2010). A Preliminary Study on Digital Audio Quality for Web-based English Listening Comprehension Tests. In J. Herrington & C. Montgomerie (Eds.), Proceedings of ED-MEDIA 2010--World Conference on Educational Multimedia, Hypermedia & Telecommunications (pp. 927-934). Toronto, Canada: Association for the Advancement of Computing in Education (AACE). Retrieved March 28, 2024 from .

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