Yogasleep is an American company, formerly known as Marpac, that has been manufacturing sound machines since 1962. The company is known for its high-quality white noise technology and offers a range of devices for home and travel, with options for adults, babies, and children.  Yogasleep's product lineup is extensive and includes portable and stationary devices for both babies and adults. The range features both digital sound machines with a variety of tracks and their signature fan-based, "rushing air" white noise.