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Sound masking is one of the most evidence-backed sleep interventions available. A consistent ambient sound at moderate volume prevents sudden sound intrusions — the real enemy of sleep continuity — from registering as threats and pulling you out of deeper sleep stages. Here are the best white noise machines.
How White Noise Works
White noise contains all frequencies at equal intensity — like a sonic blanket that covers the entire audible spectrum. When a sudden sound (a slamming door, a car horn) tries to reach your sleeping brain, the white noise raises the baseline, reducing the contrast that triggers arousal. It doesn’t prevent you from hearing sounds — it prevents them from mattering.
Best Overall: LectroFan Classic
The LectroFan offers 20 distinct sounds — ten fan variations and ten white/pink/brown noise options — generated electronically (no looping). It’s compact, consistent, and the tone and volume controls are precise. A benchmark product used in sleep clinics and by sleep researchers.
Best Smart: Hatch Restore 2
The Hatch Restore 2 combines a white noise machine, sunrise alarm clock, and reading light in one bedside device. The app lets you build personalized sleep and wake routines — a specific sound profile and dim red light for sleep, a gradual sunrise simulation for waking. The premium option for those who want a full bedside sleep ecosystem.
Best for Travel: Marpac Rohm Portable
For frequent travelers who’ve become dependent on white noise (in the best way), the Marpac Rohm is USB rechargeable, compact enough for a carry-on, and produces three sound settings. Hotel rooms, shared spaces, and new environments become manageable.
Best Fan Sound: Marpac Dohm Classic
The Dohm uses an actual fan inside a housing — not a recording — to produce a natural, mechanical fan sound. Many people find this more soothing than electronic noise. The two-speed motor and adjustable housing let you tune the exact tone and volume.