Incorporation of the Time-scale Modification of Speech and Visual Processing into Learning and Instructional System for Oral, Aural and Visual Comprehension of ESL

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Signal-processed speech and its synchronized visuals (SV) are developed to help learners of a foreign language (1) listen to authentic foreign speech that is spoken fast with many reduced forms and (2) watch value-bearing visual information that disappear fast with better and deeper understanding. Closed-captioned (CC) video materials, on the other hand, are designed to help those learners with difficulty in listening comprehension by reading subtitles presented on the display.An attempt from these perspectives in this research study was made to determine the effect of the presentation, combined these two strategies in the ESL classroom settings. The findings are as follows : (1) Subjects are likely to rely more on CC than listening to speech and watching visuals, thus the effect of SV is not obseryed, (2) Prepared cue visuals that are cut out from the learning video materials turn out a great contributor to the subjects'understanding in terms of listening comprehension.From the perspective of how listening comprehension ability develops over time, captioned video materials combined with SV system are a powerful motivating tool and can be successfully used in Japan not only for improving students'listening comprehension, but also for reading and vocabulary. However, further longitudinal studies are suggested.