For some reason people believe that a little baby is the most noise possible and it's often used in such discussions as an evidence of complete sound-proofing of their dwellings. While people do instinctively get agitated from a child's screams the power of these screams is very low. This is why parents get baby monitors as the screams don't propagate well even between floors in a single-family house. Even adults, unless trained, can't scream nearly as loud as a 200W Bluetooth speaker. Get your neighbor upstairs to drop an empty barbell bar and see how you won't notice it. And in the US your neighbor can be dropping a 300 pounds barbell while having a party with people dancing with accompaniment of 2.5kW sound system, at 2:30 am.