Double MS recording

'''Double MS recording''' is an audio recording technique used to record surround sounds using three microphones. The mid mic usually a cardioid mic, the sides using a figure of 8 mic, and the rear using another cardioid mic. This is usually used for recording ambiance sounds and not live music.<ref>{{cite web |url=https://files.plugin-alliance.com/products/schoeps_double_ms/schoeps_double_ms_manual_en.pdf |archive-url=https://web.archive.org/web/20200703170500/https://files.plugin-alliance.com/products/schoeps_double_ms/schoeps_double_ms_manual_en.pdf |archive-date=2020-07-03 |title=Double MS Plugin}}</ref><ref>{{cite web | url=https://www.soundonsound.com/techniques/double-mid-sides-array | title=The Double Mid-Sides Array }}</ref>

From these three tracks, five channels can be extracted: * Center= Mid/Mid Mic * Left=Mid+Side * Right=Mid+Invert(Side) * Surround Left=Rear+Side * Surround Right=Rear+Invert(Side)

A minor variation of this technique is employed in video cameras that record 5.1 surround sound. In this case: five microphones are used. Cardioid mid and rear microphones are used as stated above, but in this case the (normally) bi-directional side microphone is replaced by a pair of cardioid microphones facing left and right. This allows the low frequency effect microphone to be placed at the centre of a Greek cross microphone assembly. The five main channels are recovered as above. The downside of using 2 cardioid microphones in place of a single bi-directional is that the directivity of the recorded sound compared with the live is not so pronounced.

==References== {{reflist}}

Category:Sound recording