When sleeping somewhere new this 12 hour brown noise running all night on my MacBook Pro speakers helps me stay asleep better. A running fan works well too. - Staying across from a raging nightclub on a Sunday night in Bogotá - Kids running around upstairs in the morning at family's house My baseline is silence as to work on using as few external tools as possible. https://www.youtube.com/watch?v=SyF5Hpwo3WA