Double Mid-Sides Array

An extension of the Mid-Sides microphone concept in which a second Mid microphone is added to the array, but facing directly backwards. This system requires only three audio channels, but can be decoded to create five channels as the shared Sides mic is used with the rearward Mid mic to generate rear left and rear right signals suitable for surround sound applications. Sometimes referred to as the DMS format and employed where a compact surround-sound mic array is required.