Dubbing Studio for 22.2 Multichannel Sound System in NHK Broadcasting Center

摘要

8K Super Hi-Vision is planned to be on test broadcasting in 2016 and to launch a full broadcasting service in 2018 in Japan. NHK has developed a program production system for 22.2 multichannel sound for 8K Super Hi-Vision. As part of the development, NHK completed the construction of a 22.2 ch dubbing studio in NHK Broadcasting Center in July 2014. This is the first 22.2 ch dubbing studio in the production field in the world with a loudspeaker configuration that meets the standard in Recommendation ITU-R BS.2051. In this paper, we discuss the 22.2 ch production system, including its sound mixing system, loudspeaker system for monitoring, and perforated screen for 8K resolution, as well as the room design and the characteristics of the room acoustics in the studio.