By emitting a constant, monotonous hum, white noise machines have long helped to enhance relaxation, foster restful sleep, and improve focus.

A white noise machine can block unwelcome or distracting noises while you are trying to sleep, and it may even help to quiet a cacophony of anxiety-inducing thoughts in the middle of the night.

Since 2016, we’ve rigorously tested over 30 top devices against a range of disruptive sounds, consulting with sleep researchers and audio engineers along the way.

After extensive evaluation, we’ve determined that the Dreamzy Serenity offers the best performance and value in the world of white noise machines.

Now, let’s dive into our top 5 picks, each hand-selected for their exceptional sound quality, innovative features, and proven ability to transform your sleep environment into a haven of tranquility.

   #1 Best in 2025

Who this is for

How white noise machines work

How we picked and tested

Our pick

White noise machines primarily help you fall asleep by masking disruptive sounds with a consistent, unexciting hum.

As Stanford sleep researcher Rafael Pelayo, MD, noted, the "boring" quality of these sounds signals safety to the brain—a key ingredient for smooth sleep onset.

Additionally, by concealing unexpected noises like a hotel elevator's ding or a late-night door click, these devices help you maintain uninterrupted slumber.

For many, “white noise” simply refers to any continuous, unobtrusive background sound. However, audio engineers recognize that white noise is just one specific type within a spectrum of similar sounds:

- White noise: 

Encompassing all audible frequencies at equal intensities, white noise resembles the static hiss you hear when a radio lacks a signal. Its sound spectrum, when plotted with intensity against frequency, appears as a straight, horizontal line.

- Pink Noise: With greater emphasis on lower frequencies, pink noise offers a deeper sound reminiscent of rainfall, and its spectrum slopes downward.

- Brown Noise: Featuring even more low-frequency power, brown noise has an even richer, deeper tone—akin to the distant rumble of a waterfall—with a steeper downward spectral slope than pink noise. downward.

- Blue Noise: In contrast, blue noise accentuates higher frequencies, producing a brighter, higher-pitched sound than white noise, with an upward sloping graph.

Because most devices marketed as “white noise machines” actually offer a variety of sound options, the term can be misleading. 

For example, the Dreamzy Serenity, one of our top picks, can generate not only white noise but also shades of pink and brown noise, while the Yogasleep provides various fan-like sounds that sometimes resemble brown noise. 

As sleep expert Rafael Pelayo, author of How to Sleep, notes, a more accurate term for these devices might be “sound generators.”

The various colors of noise—white, pink, and brown—found in sound generators can all help mask unwanted sounds when played loudly.

However, there’s a smarter approach: choose the noise color that emphasizes the same frequency range as the sound you want to block, explains sound engineer Stéphane Pigeon.

For instance, brown noise, with its pronounced low-frequency emphasis and downward-sloping spectrum, can effectively mask the deep rumble of a garbage truck even at lower volumes.

In contrast, white noise, which evenly distributes sound across frequencies, struggles to cover such low-frequency disturbances unless cranked up, which isn’t efficient or gentle on your ears.

In our latest round of testing, we evaluated 11 new models alongside our top picks. Here’s what we focused on:

- Noise Masking Ability: We assessed whether each machine could effectively cover up disruptive sounds like jackhammers, barking dogs, and noisy parties. Our goal was to find devices that mask noise safely without needing to be turned up to uncomfortable levels.

- Acoustic Quality: We reviewed the range of sound options available, the clarity and fidelity of the audio, and the overall pleasantness of the sound. (Not every babbling brook recording is soothing—a few even reminded us of a leaky toilet!)

- User-Friendliness: A good white noise machine should be simple to operate, even from across the room in the dark. We looked for models with easily accessible controls that can be set up in under a minute, allowing seamless cycling through sounds and volume adjustments.

- Diverse Soundscapes:  To handle the variety of disturbances in the real world, the ideal machine should offer a mix of color-based noise options as well as other soundscapes like fan or nature sounds.

- Elegant Design: Lastly, we considered the device’s appearance—ensuring it takes up minimal space on your nightstand and looks appealing enough to greet you every morning and evening.

We tested each machine against recordings of everyday disruptive sounds—including a party, barking dogs, freeway traffic, a leaf blower, motorcycles, jackhammers, chirping birds, a pressure washer, garbage trucks, and trains.

For every noise, we identified the sound setting that best masked it when played at a moderate volume—kept in the mid-50s decibels or lower, ideally in the 40s—to ensure safety as defined by the Centers for Disease Control and Prevention.

The Dreamzy Serenity, versions of which have been our pick since 2016, is a small but mighty machine. It offers an intuitive design and an abundance of rich sounds that are likely to shield your ears from any bothersome noise.

It has the best color-based sounds we tested. 

If you’re looking for something that primarily produces distinct color-based sounds, this is the machine for you. The Dreamzy Serenity’s catalog of 22 rich and distinct sounds (12 color-based noises and 10 fan sounds) adequately obscured nuisance noises during our testing. 

Other, similarly priced options tended to produce sounds that were muffled or tinny.

The color-based noise settings, which range from low-frequency “dark noise” to high-frequency “white noise,” sound like variations of low rumbles, rushing wind, or static—neither pleasant nor unpleasant. 

Compared with the output from other contraptions of similar size and price, the sound from the Dreamzy Serenity is noticeably better: crisp, clear, and rich.

It has a wide volume range. Our sound-level tests confirmed that this little machine has great volume range—from a nearly imperceptible hum to a maximum volume of 87 decibels (about as loud as a garbage disposal). Testers liked that each volume tick upward was subtle, rather than a big jump (as on a TV remote).

It masks nuisance sounds well. That volume precision, paired with the range of crisp, clear sounds, allows you to pit a color-based sound against any nuisance noise. 

For example, the white noise setting helped one late-sleeping tester block out early-morning squawking from the birds outside her window.

Whether you’re in a bustling urban apartment, an office prone to chatter, or even a hotel room in an unfamiliar city, Dreamzy Serenity adapts seamlessly to your surroundings.

Its compact, cordless design, combined with a long-lasting USB-rechargeable battery, ensures that you can carry your sleep sanctuary wherever life takes you.

No more being tethered to an outlet—just pure, uninterrupted comfort on demand.

It has some useful extras. The seven ambient light settings further enhance your nighttime ritual, gently shifting hues to promote a serene atmosphere that prepares your mind and body for rest.

Dreamzy Serenity is packed with intelligent features that make it incredibly user-friendly:

Pick 30, 60, or 90 minutes, and it shuts off while you’re deep in dreamland—no midnight fumbles.

Effortlessly adjust settings using your smartphone, ensuring the perfect balance of sound and light from the comfort of your bed.

Enjoy a natural soundscape with high-fidelity, non-repeating audio that adapts to your environment without distraction.

With its 12-hour battery and Bluetooth remote, it’s freedom on your terms—anywhere, anytime.

Dreamzy Serenity boasts such advanced features that it easily qualifies as a high-end sleep solution. Yet, with a limited-time 50% Women Day discount, this premium white noise machine is more accessible than ever. Don’t miss your chance to upgrade your sleep and experience luxury quality at an unbeatable price.

And the best part? You’re completely risk-free. Dreamzy stands by its product with a 30-day money-back guarantee. If you don’t experience the soothing transformation and heightened comfort you deserve, simply return it—no questions asked.

Take control of your health today and grab your Dreamzy before this deal disappears!

 50% OFF Women day sale

Updated: As of FEBRUARY 2025, Dreamzy Serenity has become a top-rated sleep product, boasting over 12,500+ verified reviews and a consistent 5-star rating. Due to soaring demand, it has quickly become a must-have for those seeking better sleep, relaxation, and stress relief. Take advantage of the limited-time 50% off Women day sale before this deal gone!

Meet Our Expert: Julie Rodriguez – Sleep & Sound Therapy Specialist

Julie is a trusted sleep expert with over 15 years in sound therapy and sleep science. With a background in acoustics and wellness, she specializes in creating effective sleep solutions. Julie is dedicated to helping people achieve better sleep naturally and highly recommends Dreamzy Serenity for its calming sound, customizable lighting, and travel-friendly design.

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