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Performance Evaluation of a Dynamic Crosstalk-Cancellation System with Compensation of Early Reflections

In virtual reality systems such as the aixCAVE (Cave Automated Virtual Environment) multiple screen-walls provide a 3-D image of the virtual world for a tracked listener. Loudspeakers that surround the user, as demanded by VBAP and Ambisonics, would interfere with the user’s field of view. Headphone reproduction in contrast lacks a presentation of structure-borne sound for lower frequencies and additional user-attached devices distract the user from the virtual environment. These conditions make crosstalk-cancellation (CTC) systems favorable. As reflections of the acoustically hard surfaces of the screens superimpose the signal of the CTC system, this paper investigates the performance of a multi-channel CTC system with compensation of first order reflections in a CAVE system.

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