In the process, a source's volume level, frequency content, dynamics, and panoramic position are manipulated or enhanced.
Audio mixing for film and television is a process during the post-production stage of a moving image program by which a multitude of recorded sounds are combined.
In the editing process, the source's signal level, frequency content, dynamics, and panoramic position are commonly manipulated and effects added.
The process takes place on a mixing stage, typically in a studio or purpose-built theater, once the picture elements are edited into a final version.
Normally the engineers will mix four main audio elements called stems: speech (dialogue, ADR, voice-overs, etc.