This paper describes the parameters that need to be taken into account in the design of a 13 channel microphone array recording system for reproduction also in a 13 loudspeaker hemispherical configuration. Both the microphone array and the loudspeaker array use 8 channels in the horizontal reference plane, 4 channels in the 45° elevation plane, and a Zenith channel at the top (90° elevation). This paper will also describe the various stages of advancement to complete 3D coverage (Integral 3D), and the logical development of this type of array to a new format proposition - the 16 channel “Comfort 3D format.”
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https://aes2.org/publications/elibrary-page/?id=18267
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