Immersive virtual reality is by its nature a multimodal medium and the use of spatial audio renderers for VR development is widespread. The aim of this study is to assess the performance of two common audio rendering methods and the effect of the presence of visual cues on plausibility of rendering. The test paradigm was that of presenting audio stimuli within a virtual room visually similar to the room used in reality. Whilst it was found that the plausibility of the rendered audio was low, the results suggest that the use of measured acoustic responses performed comparatively better compared to modelled responses. In addition, the lack of visual stimuli increased the rate of externalisation when audio was rendered using modelled responses.
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