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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

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4 Author(s)
Takuma Okamoto ; Research Institute of Electrical Communication, Tohoku University, Japan ; Zheng Lie Cui ; Yukio Iwaya ; Yôiti Suzuki

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.

Published in:

2010 2nd IEEE InternationalConference on Network Infrastructure and Digital Content

Date of Conference:

24-26 Sept. 2010