The objective evaluation of the audio performance of non-linear processes such as data reduction has required the development of a new generation of perception based assessment algorithms. In the future it is expected that a large proportion of communications traffic will be wideband and multi-media. In developing objective techniques to assess multi-media systems it is necessary to investigate, and model, the dependencies which exist between audio and visual perception. This paper reports an experimental investigation into combined audio/video perception and proposes an algorithmic basis for a multi-sensory perceptual model.
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