The Effect of Audio - Video Quality on Learning Effectiveness in Distance Learning Over IP Networks
This paper deals with multimedia distance learning over IP networks and investigates the most suitable presentation style of contents according to communication quality by experiment. The authors compare three styles of contents: "Text", "Text and audio" and "Text, audio and video." For the three presentation styles of contents, they examine how the learning effectiveness of the learners depends on the communication quality. The learning effectiveness is assessed in terms of the ratio of correct answer. As a result, they find that the audio-video with text raises the learning effectiveness compared to the text only if the communication quality is high.