#31033
The post-production process known as 'Foley' refers to the art of recording 'live' sync sound effects to picture. It is akin to looping the dialogue, but instead of recording the actors performing their lines while watching themselves on screen--skilled craftspeople known as 'Foley artists' will walk, run, and act out any sync sound effects to match what the actor is seen (or implied) doing in the picture.
Ginsburg, Fred. Equipment Emporium (2006). Articles>Multimedia>Editing>Audio
#31030
Multi-Track Mixing for Location Dialogue
Stereo is rarely recorded as such in the field. Instead, we record monaural sounds and wait until post-production is nearly complete to re-assign these sounds to the audience's left, right, and in-between. Until the film is edited, there is no way to know just where all of the audio elements need to end up. For instance, out on production, it might seem logical to record a car that passes from left to right in stereo, so that you can hear the 'pass by' in your phones whoosh from the left ear to the right ear.
Ginsburg, Fred. Equipment Emporium (2006). Articles>Multimedia>Editing>Audio
