Real-Time Closed-Captioning System Using Speech Recognition of Direct Program Sound and Re-Spoken Utterances

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  • ダイレクト方式とリスピーク方式の音声認識を併用したリアルタイム字幕制作システム
  • ダイレクト ホウシキ ト リスピーク ホウシキ ノ オンセイ ニンシキ オ ヘイヨウシタ リアルタイム ジマク セイサク システム

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A new real-time closed-captioning system for Japanese TV news broadcasts is described. The system is based on a hybrid automatic speech recognition system that switches its speech input between the original program sound and speech rephrased by a “re-speaker”. By improving our speech recognizer and its error correction system, we decreased the number of correction operators needed from four in our previous news system to one or two, depending on the difficulty of the speech recognition. Experimental results show that the system could be used at broadcasting stations for captioning typical news programs more easily and by fewer staff.

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