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Influence of Different Microphone Arrays on IACC as an Objective Measure Of Spaciousness

Inter-Aural Cross Correlation measurements are used as physical measures that relate to listener spaciousness experience in a comparative study of the influence on spaciousness of different microphone arrays, thus allowing an objective approach to be adopted in the exploration of how microphone arrays affect the perceived spaciousness for stereo and surround sound reconstructions. The different microphone arrays recorded simulated direct and indirect sound components. The recorded signals were played back in three different rooms and IACC measurements were made for the reconstructed sound fields using a dummy head microphone system. The results achieved show how microphone array details influence the IACC peak and lead to a better understanding of how spaciousness can be controlled for 2 channel stereo and 5.1 presentations. Parametric variation of microphone arrays can therefore be employed to facilitate spaciousness control for reconstructed sound fields.

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