From what I’ve been reading, (4-sentence articles on The Bump app, plus the first 2 pages of every baby book I’ve been assigned), at this point baby can recognize regular, repeated sounds she’s hearing, and these sounds might be soothing to her outside the womb. That’s why many newborns are calmed by lullabies that were frequently sung to them in utero, or the sound of the vacuum.
Our baby will be soothed by mild cursing, text alerts, sarcasm, the universal accent of all food delivery men, and the sound of the toilet flushing.