What is Ambisonics? From an article, "Creative Field Recording", Paul Virostek. Ambisonics is a special technique for gathering and using audio recordings. Ambisonic sound effects are captured by rare, uniquely designed microphones that house four sub-cardioid microphones pointed in different directions. This unusual arrangement of microphone capsules is know as a tetrahedral array. Together these 4 channels capture audio not only on the typical horizontal plane, but also above and below the microphone, too. In other words, these microphones record audio from every direction surrounding the microphone. So, Ambisonic recordings use hardware and software to gather a full 360 degree representation of sound. In my opinion the difference between stereo and Ambisonic recording is as substantial as the move from mono to stereo. In comparison to Ambisonics, stereo sounds quite flat.