| 摘要 |
<p>[PROBLEMS] To reduce a deviation between video and audio to such a degree that no unnaturalness is perceived when a single device is used, for example, to view the video on a television broadcast and hear the audio on a radio broadcast at the same time. [MEANS FOR SOLVING PROBLEMS] There are provided an audio comparing part (11) for calculating the amount of a deviation between a television audio and a radio audio; an audio delaying part (7) for delaying the radio audio; and a video delaying part (8) for delaying the television video. If both the television broadcast and the radio broadcast are stereo broadcasts, the audio comparing part (11) extracts the signal (CT) of a characteristic part obtained by subtracting a right channel of a television audio signal from a left channel thereof, and also extracts the signal (CR) of a characteristic part obtained by subtracting a right channel of a radio audio signal from a left channel thereof. Then, for example, if the television broadcast have a delay relative to the radio broadcast, the audio comparing part (11) calculates such a delay time that CR CT = 0, while delaying CR. The audio delaying part (7) then delays the radio audio, by that delay time, for output, thereby establishing synchronization between the television broadcast and the radio broadcast.</p> |
