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Journal Article

Downmixing Method for 22.2 Multichannel Sound Signal in 8K Super Hi-Vision Broadcasting

Authors: Sugimoto, Takehiro; Oode, Satoshi; Nakayama, Yasushige

Journal of the Audio Engineering Society · Volume 63 · Issue 7/8 · pp. 590–599 · July 2015

Abstract

8K Super Hi-Vision (SHV) is one of the Ultra-high definition television systems, characterized as the next-generation television systems intended to convey a far stronger sense of reality than existing audio visual systems. The system has SHV audio presented with a 22.2 multichannel sound system composed of 24 channels placed in three layers. Although it is desirable for the 22.2 channel signal to be reproduced as discrete signals in a configuration similar to that of the production environment, such a loudspeaker arrangement is not always practical. A downmixing method for a 22.2 multichannel sound signal that can provide a 2 channel signal via a 5.1 channel signal was investigated for SHV broadcasting. The proposed method is composed of equations and initial coefficients optimized for transmission by MPEG-4 AAC. A subjective evaluation was carried out and the result proved that the proposed method is suitable for the 22.2 multichannel sound broadcasting.

Details

Publication
Journal of the Audio Engineering Society
Volume
63
Issue
7/8
Pages
590–599
Publication date
July 6, 2015
Affiliation
Science & Technology Research Laboratories, NHK, Setagaya-ku, Tokyo, Japan (See document for exact affiliation information.)
Type
Journal Article