Telepresence systems are intended to allow the perception of events by a user at a separate location, sufficiently presented to allow the user to react as if they were "present". Teleoperation systems constitute a system where the user perceives a remote environment and through local actions controls events at the local site. This system implies additional constraints in terms of reactivity between actions, their application at the remote site, and the perception of these events at the originating site. This paper presents an ongoing project entitled SACARI (Supervision of an Autonomous Car by an Augmented viRtuality Interface) in which the aim is the teleoperation through supervision of a remote vehicle using a multi-modal virtual environment. A system had been designed to provide multi-sensory information to the user through visual and auditory feedback. The auditory channel is discussed in detail with respect to the means of audio capture and rendering. Two methods, binaural and Ambisonic, are investigated in a controlled situation, with a discussion of the advantages and disadvantages of each in the given context and installation.
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