[AndrewUnmuted]

Wow. I love how curious folks are here about audiobook production! :)

The pauses between lines/phrases were often tightened up, yes, by pasting room tone over the pauses. This way, the near-silence of the room tone is consistent throughout each pause, which makes the narration easier to comprehend and allows the listener greater immersion into the experience.

The exact duration of room tone impacts the pacing of the narration. This is, in a way, the audiobook editor's "art." They can't over-edit because it would ruin the narrator's dramatic delivery - they need to be able to edit within the stylistic flow of the narrator. At the same time, if they are not careful enough to make the resulting delivery consistent, then the extraneous audio may distract listeners and lead to a lower quality result. That balance is acquired with experience.

The reason this all happens, really, is to ensure a clean "noise floor" - the background sounds heard in addition to the narrator's voice. The sound of the room and the gear, if you will. The narrators are such pros (my experience) - there are many who I could get away with not editing at all, if it weren't for the incredible need for near-silence throughout the entire finished production.