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System Theory of Binaural Synthesis

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Binaural synthesis is widely used as efficient tool for the simulation of acoustical environments. Different headphones together with artificial as well as human heads are employed for the transfer function measurements involved, having considerable influence on the synthesis quality. Within this paper, a detailed system theoretical analysis of the signal paths and systems involved in a typical data based binaural synthesis scenario is given. The components to be equalized are identified, and equalization methods for every scenario are discussed. Further, restrictions and necessities when using artificial or human recording heads and for headphone selection are given. Most important results are the necessity of blocked auditory canal measurements and the selection of proper headphones for completely correct individual binaural synthesis.

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AES - Audio Engineering Society