A ‘Shotgun’, in the film and sound world, is referring to a type of microphone that is hyper directional and used most often in recording dialogue for film.

Also called a line cardioid, it can be pointed at a specific sound source and will reject the sounds using a set of phase interference tubes, coming from the sides of the microphone.

These microphones, have a slight extra sensitivity in their rear due to the inherent nature of the phase cancelling components (making them less of an ideal choice for indoor recordings). 

The directional nature of shotgun microphones make them ideal candidates for many sound effect recording scenarios.

image of an assortment of shotgun microphones of varying lengths

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