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Influence of Different Test Room Environments on IACC as an Objective Measure of Spatial Impression or Spaciousness

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To investigate the perceptual impression of spaciousness, a physical measure, which relates to listener spaciousness experience, was used. A variable setup was introduced that made possible the control of spaciousness in different rooms. IACC measurements were made using a frontal loudspeaker for the direct sound, with a second loudspeaker for an angled single early reflection positioned in the horizontal plane. Measurements were performed under controlled conditions in which a dummy-head measured Inter Aural Cross Correlation was captured for variable sound fields. It was possible to conclude that there is a similar trend in IACC results from the repetition of the experiments in different rooms. That is, measurement room acoustic details are not crucial to observed trends in IACC variation

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