It can be shown that Microphone Array Design applied to a 12-channel 3D microphone array can create a master recording array design that will generate downward compatible signals that satisfy most of the present-day univalent lower order channel/loudspeaker configurations. The implementation of this compatibility oriented array design requires no matrixing or processing of the channel signals, while still maintaining the integrity of the overall sound field architecture. This compatibility approach to 3D array design produces a master recording system that can be adopted for an overall production, eventually to be distributed using several different media formats (stereo, DVD, Blu-ray, 3D, etc.). However this approach can also be used as a consumer choice function within a global master recording or file downloading facility.
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