2015 Volume 3 Issue 1 Pages 67-75
A reproduction method for the 11 frontal channels of a 22.2 multichannel sound system (22.2 ch) over a direct-view display is investigated. NHK is planning to broadcast 8K Super Hi-Vision with 22.2 ch in a pilot broadcasting in 2016. A loudspeaker array frame has been developed for integration into the direct-view display as a home reproduction system and is used as a reproduction device of 22.2 ch. Localization of the frontal channels reproduced by the real loudspeakers is subjectively evaluated in terms of localization accuracy by estimating the difference from the intended localization for an 85-inch display. Three reproduction methods to synthesize the channels on the display are proposed and evaluated by comparison with a real loudspeaker placed at an exact channel position. Appropriate reproduction methods for the 11 frontal channels of 22.2 ch were decided from the results of a subjective evaluation.
