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Unraveling the perception of spatial sound reproduction: Techniques and experimental design

This paper describes the experimental design of two subjective tests designed to study the perceptual nature of spatial sound reproduction systems. This issue is considered in terms of the multidimensional nature (attributes) of the perceptual space and how these attributes relate to subjective preference judgements. The experiments comprising of a paired comparison preference task and a single stimulus direct attribute rating experiment are outlined. The methods of recording, generation & reproduction of the sound samples is presented. A total of 8 reproduction systems were employed ranging from mono, several stereo systems, 5 channel and periphonic. 13 acoustic environments were considered for each system. This sample set forms the basis for an extensive preference mapping experiment to unravelling how we perceive the quality of spatial sound reproduction systems.

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