Abstract
Possibility of real-time subtitling of news programs was considered for people with impaired hearing. Before we try to realize the system, we need to know the effectiveness and preferred format of subtitling. In order to evaluate the comprehensibility of real-time subtitling, subjects with impaired hearing were shown a short news program with subtitles, and their comprehension of its contents was subsequently tested. Results indicated that subjects performed about as well on average after viewing a program with subtitles as people with normal hearing did after viewing a program with sound, and better than after viewing a program with neither, suggesting that real-time subtitling was effective for people with impaired hearing.