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Optimisation and Subjective Assessment of Surround Sound Microphone Arrays

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A number of surround sound arrays have been constructed with closely spaced microphones of cardioid and omni-directional patterns. The spacings and angles between microphones were calculated to test two different psychoacoustic models that aim to provide 360° imaging in a horizontal plane. A series of controlled subjective listening tests have been undertaken, and results are presented comparing image localisation accuracy and localisation confidence between the arrays. Results on the effect of crosstalk between opposite microphones in the arrays are also presented.

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