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Effect of Binaural Difference in Loudspeaker Directivity on Spatial Audio Processing

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Head Related Transfer Functions (HRTFs) are typically measured with loudspeakers facing the listener. Therefore, it is assumed that loudspeaker directivity to the left and the right ear is equal. However, in practice the directivity to both ears may not be equal. For instance, differences can be caused by changes to a listener’s location or uncommon loudspeaker driver orientations. This paper discusses the effect of binaural difference in directivity of loudspeaker on spatial audio processing and proposes an efficient solution that improves the spatial effect by compensating the directivity difference. Subjective evaluation is conducted to measure the performance of the proposed solution.

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