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To open up new possibilities to assess the multimodal perceptual quality ofomnidirectional media formats, we proposed a novel open source 360 audiovisual(AV) quality dataset. The dataset consists of high-quality 360 video clips inequirectangular (ERP) format and higher-order ambisonic (4th order) along withthe subjective scores. Three subjective quality experiments were conducted foraudio, video, and AV with the procedures detailed in this paper. Using the datafrom subjective tests, we demonstrated that this dataset can be used toquantify perceived audio, video, and audiovisual quality. The diversity anddiscriminability of subjective scores were also analyzed. Finally, weinvestigated how our dataset correlates with various objective quality metricsof audio and video. Evidence from the results of this study implies that theproposed dataset can benefit future studies on multimodal quality evaluation of360 content.

Perceptual Evaluation on Audio-visual Dataset of 360 Content