Human beings have two ears to localize sound sources. At a first glance, the dimensions of the right and left ears are generally very similar. Nevertheless, the individual anthropometric dimensions and shape of both ears are disparate. These differences improve localization on the cone of confusion where interaural differences do not exist. To determine the influence of asymmetric ears, individual HRTF data sets are analytically and subjectively compared with their mirrored versions.
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https://aes2.org/publications/elibrary-page/?id=18590
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