Youngest child never stops talking, including sleep talking at times. But eldest child expressed this need for making/experiencing sound at all times through making all manner of noises, most of them truly awful. The talk is more mentally exaubsting because you try to always listen and respond, and I really can't multitask anymore. But living with a noise machine was a years long sensory trauma that I would never wish on anyone, I often felt like I was being physically attacked, some of her noises were nails on a blackboard awful.