They sell white noise and whale noise baby products, many parents started using their phones or Echo/Home devices. So yes, anything with a speaker will work, an

They sell white noise and whale noise baby products, many parents started using their phones or Echo/Home devices. So yes, anything with a speaker will work, and is likely closer to what you hear in the womb then what one's mouth can simulate. It also still works on adults. I regularly have a fan or white noise going when I sleep.