title: Double MS recording
text: # 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.
  
  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)
  