The strategy for capturing and restoring acoustic properties of a 4-pi sound field is one of the important issues for immersive-sound productions. Especially for post-production work, they are required to have a lot of flexibility. While some strategies have been already proposed such as Ambisonics, WFS, and BoSC, they require much effort and have less flexibility. Therefore, the authors developed a 4-pi sampling reverberator, VSVerb, which restores 4-pi reverberation by using captured virtual sound sources on site. Moreover, it enables to adjust various acoustic parameters at the post-production stage. In order to verify feasibility of the proposed method, some preliminary experiments were conducted. As a result, effectiveness of the VSVerb is confirmed, and some future subjects are also found.
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