The Effect of Text Information on Learning Efficiency in Audio-Video Transmission over IP Networks

Abstract

This paper shows that text information improves the learning efficiency of the users in audio-video transmission over IP networks. Using three kinds of content types in subjective experiment, we measure learning efficiency with and without subtitles; we then compare the two cases. The learning efficiency is evaluated in terms of the ratio of correct answer. Even if the average amount of load traffic increases in the network, the ratio of correct answer keeps high values because of text information. As a result, we see that text information is effective in improving the learning efficiency in IP networks.