this post was submitted on 18 Apr 2024
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Im confused. How exactly is the room tone used? Is replayed in the background during something like an A roll?
It's used in a number of different situations, but its most common use is as fill during dialogue cuts: let's say you want to put two different pieces of dialogue together, but have a natural pause between them, room tone is necessary to maintain continuity.
In a study during World War II regarding comprehensibility in radio communications, radio static was less destructive to understanding an interrupted statement than no sound at all.
Also, one of the most effective forms of jamming was a recording of multiple voices all talking over each other, it made it virtually impossible to make out who you wanted to hear.
Oh wow. Really interesting. Thanks
Not a professional, but studied it in college. It's mostly to either fill in gaps or loud noises.
One thing you can often do is get a "noise print" of the room, and you can isolate someone's audio basically perfectly. From there you can create a room tone and slap it under the entire track. Now if you need to mute or something you just cut the talking track and the room noise carries over.
If you don't get a good room tone, say you want to use someone looking at the camera, but the director was talking. If you try to filter out the directors voice, it's likely going to sound weird because some of the tones overlap with the room. So you mute it and slap the room tone over and you're good. They often get too much, because room tones vary ever so slightly. If you get a tiny half second sample, unless you get very lucky you'll pick up that something is repeating or sounds weird. If you have 10-20 seconds you can loop that no problem.
Oof yeah noise reduction and frequency remover tools can be awesome or really frustrating.