Of late, various audiovisual services based on the internet are being deployed extensively. Among these, objectbased audiovisual services are attracting more attention. In 2014, we had established the software defined media (SDM) consortium to investigate object-based and internet-based audiovisual services. Despite the increasing demand and popularity of live concert events, the placement of the microphone and camera limit the free-viewpoint watching of the contents of package media, such as DVDs. In this study, we design and implement an interactive 3D audiovisual service system called LiVRation, with a free-view-listen point. For subjective evaluation, 211 people were made to experience LiVRation and answer a questionnaire, subsequently. In addition, we demonstrated the system in the "Billboard Live Hackasong 2017" hosted by Billboard Japan, and received the first prize, based on the votes of the judges as well as audience.

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Of late, various audio-visual services based on the internet are being deployed extensively. Among these, object-based audio-visual services are attracting more attention. In 2014, we had established the software defined media (SDM) consortium to investigate object-based and internet-based audio-visual services. Despite the increasing demand and popularity of live concert events, the placement of the microphone and camera limit the free-viewpoint watching of the contents of package media, such as DVDs. In this study, we design and implement an interactive 3D audio-visual service system called LiVRation, with a free-view-listen point. For subjective evaluation, 211 people were made to experience LiVRation and answer a questionnaire, subsequently. In addition, we demonstrated the system in the "Billboard Live Hackasong 2017" hosted by Billboard Japan, and received the first prize, based on the votes of the judges as well as audience.