Broadcast Technology
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چکیده
Closed captioning to convey the speech of TV programs by text is becoming a useful means of providing information for elderly people and the hearing impaired, and real-time captioning of live programs is expanding yearly thanks to the use of speech recognition technology and special keyboards for high-speed input. This paper describes the current state of closed captioning, provides an overview of speech recognition technology, and introduces real-time closed-captioning systems using speech recognition. It also describes recent research at NHK STRL on speech recognition for improving recognition performance and operability and discusses technical issues for further research.
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