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| One of the future broadcasting services will be an interactive service in which viewers can select their audio video presentation preferences by specifying a viewpoint location. We are studying how to control ambience and the localization of a sound image dynamically linked to the composition of a 3-D video image. To examine the synergy with 3-D video, we constructed an experimental system (MRAV*1) that can automatically reproduce virtual 3-D sound linked to the viewpoint of 3-D CGs. |
- The sound image distance is controlled with small loudspeaker arrays*2.
- Three front loudspeaker arrays are driven by two signals, from distant sounds and close sounds, employing a total of eight channels including the two rear loudspeakers. When the front loudspeaker arrays emit the sum of the distant and close sound signals, the system can be in 5.1 channel surround sound.
- It transmits video frame identification numbers to the sound system side, to accurately time the video and sound signals.
- We constructed a display program that composes high-resolution stereoscopic video.
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| The synergy of three-dimensional video and audio will lead to a system conveying a strong sensation of presence. |
*1 MRAV (Mixed Reality Audio-Visual reproduction System)
*2 Loudspeaker array: loudspeaker consists of many loudspeaker units arranged for focusing.
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