an assistant of the location sound mixer. The principal responsibility of the boom operator is microphone placement, using a “boom pole” with a microphone attached to the end. He or she will also attach wireless microphones to actors, celebrities and anyone whose voice requires recording.
The boom operator must decide where to place the boom microphone based on a combination of factors, including the location and projection of any dialogue, the frame position of the camera, the source of lighting (and hence shadows) and any unwanted noise sources.