In 2012 on a quest for three dimensional sound, I built an ambisonic microphone. The tool converts four channels of recorded sound in a precise tetrahedral array into a reconfigurable sound field. A room with any number of speakers (greater than four) spatially arranged with precise coordinates could be used to then play back a 3d image of the sound.

On the one hand, the microphone is a perfect reproduction of the Enlightenment view that man is at the center of the universe. To hear the precise spatial image, one must place herself at the sweet spot in the center of the speakers. However, I became interested in moving that sweet spot, dispersing it, and eventually abandoning any necessity for the sweet spot obtaining a more lo-fi three dimensional sound image.

More details from the original blog post on Soundscrapers.