Implementation of a high-definition 3D audio-visual display based on higher-order ambisonics using a 157-loudspeaker array combined with a 3D projection display

Author

Okamoto, Takuma ; Cui, Zheng Lie ; Iwaya, Yukio ; Suzuki, Yôiti

Author_Institution

Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan

fYear

2010

fDate

24-26 Sept. 2010

Firstpage

179

Lastpage

183

Abstract

We have implemented a high-definition 3D audiovisual reproduction system based on higher-order ambisonics (HOA) using a surrounding-157-loudspeaker array combined with a 3D projection display to reproduce information with high sense-of-presence. In this report, we introduce the system overview as well as an investigation to realize good system synchronization, which we are keenly devoted to. Results of the investigation show that all 157 channels of loudspeakers were completely synchronized within the one-sample level (48 kHz) controlled using a single PC with three Multichannel Audio Digital Interface (MADI) systems. Moreover, the latency among 157 audio signals and the video signal was only about 1.1 ms.

Keywords

array signal processing; audio signal processing; audio-visual systems; high definition video; loudspeakers; television displays; video signal processing; 157-loudspeaker array; 3D projection display; MADI system; audio signal; high-definition 3D audio-visual display; high-definition 3D audiovisual reproduction system; higher-order ambisonics; multichannel audio digital interface; system synchronization; video signal; Arrays; Lifting equipment; Loudspeakers; Synchronization; Three dimensional displays; Visualization; 3D audio-visual display; 3D projection display; MADI system; higher-order Ambisonics; surrounding 157-loudspeaker array;

fLanguage

English

Publisher

ieee

Conference_Titel

Network Infrastructure and Digital Content, 2010 2nd IEEE International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-6851-5

Type

conf

DOI

10.1109/ICNIDC.2010.5657843

Filename

5657843