Pink Noise vs White Noise: What's Better for Sleep?

What Is Pink Noise?

Also referred to as 1/f or flicker noise, pink noise is a consistent sound that carries equal energy in every octave, giving it more low-frequency power than white noise. It sounds deeper and softer, a bit like steady rain, which many people find more pleasant than the brighter hiss of white noise.

An octave is a doubling of pitch, for example from 200 Hz to 400 Hz. Because each higher octave covers a wider range of frequencies, the power at each frequency drops by about 3 dB as the pitch doubles. A 3 dB drop is roughly half the power. Lower frequencies have greater power than higher frequencies, producing a richer, more harmonious sound.

Imagine waves meeting the shore or steady rainfall. Sounds like these come close to pink noise. Pink noise's steady, tranquil quality can mask intrusive background sounds, creating a serene environment that promotes better sleep.

How Pink Noise Can Improve Sleep

Pink noise improves sleep by masking low-frequency, rumbling sounds that wake you, like traffic, a neighbor's TV or the vibrations of household appliances. Its deeper tones are gentler than white noise, so many people find it easier to relax and fall asleep to.

Pink noise has calming natural tones that can relax and ease stress for some people. Being in a relaxed state helps you drift off faster and stay asleep longer, improving sleep quality.

There's a lot of fascinating research on pink noise. A lab study of older adults published in Frontiers in Human Neuroscience found that short bursts of pink noise timed to the brain's slow waves boosted deep-sleep activity and next-day memory.⁽¹⁾ The bursts were timed by a computer reading brain waves, so at home the benefit comes from masking and relaxation rather than from a direct deep-sleep boost.

Getting the most out of pink noise depends on volume. A 2026 lab study published in Sleep found that steady pink noise played all night at 50 dB was linked to less REM sleep, the stage when most vivid dreaming happens.⁽²⁾ Set it just loud enough to mask the sounds that wake you, and use a sleep timer so it isn't running at full volume all night. A sound machine with volume control and a timer gives you both.

What Is White Noise?

White noise is a steady sound with equal power at every audible frequency. It's often compared to white light, a mix of all light spectrum frequencies you can see.

It sounds like a hiss, similar to radio static or an air conditioner. It sounds brighter and sharper than pink noise because the high frequencies are as strong as the low ones. What it doesn't have are specific tonal features.

Compared to pink noise's natural and diverse tones, white noise has a harsher, more consistent sound.

How White Noise Can Improve Sleep

White noise helps by covering jarring sounds, so a door slamming or a car horn is less likely to wake you up. Its main advantage is consistency. A steady, unchanging sound environment is particularly helpful for those who can't drift off or stay asleep amid fluctuating noise levels.

A small 2021 study published in Sleep Medicine found that it helped people in noisy New York City homes sleep better, but more overall research on sleep outcomes is needed.⁽³⁾ Note that the study didn't have a control group.

A systematic review of 38 studies published in Sleep Medicine Reviews rated the overall evidence that steady noise improves sleep as very low quality.⁽⁴⁾ The masking effect is real, and white noise still works well for a lot of people.

Many people use white noise for tinnitus relief. The steady sound makes the internal ringing, buzzing or hissing in the ears less noticeable at night. However, trials haven't shown that it treats the condition.⁽⁵⁾

Pink Noise vs White Noise: What Are the Key Differences?

While they are similar, there are key differences:

• Frequency Distribution: Pink noise has more intensity in lower frequencies, whereas white noise maintains a consistent power across all audible frequencies.
• Sound Quality: Pink noise is more calming and natural for many listeners. White noise may be harsh and monotonous for others.
• Masking Capacity: Pink noise is powerful in lower frequencies, which makes it extra helpful at drowning out low-frequency sounds.
  

How Do You Choose Between Pink Noise and White Noise for Better Sleep?

First, there's no best solution when choosing between pink and white noise. It all depends on your unique preferences and sleep needs.

Here are some key factors to consider:

• Sound Preference: Some are drawn to pink noise's natural and calming sound. Meanwhile, others prefer the steady, unchanging sound of white noise. Don't be afraid to experiment and see which leads to better sleep. As one verified Manta Sleep customer put it: "Everyone's personal experiences as far as what sounds are helpful may be different though, and I was able to find a few that work well for me."
• Environmental Noise Conditions: If your main goal is to mask low-frequency background sounds, pink noise is the better choice because it has greater intensity in lower frequency ranges.
• Sleep Disorders or Hearing Conditions: If a sleep disorder is behind your bad nights, pink or white noise can make the room calmer, but neither will treat the cause. So, check in with a doctor. For some people with tinnitus, steady sound can make the ringing less noticeable at night.
  

Popular Sounds for Sleep: Pink Noise and White Noise

Here are examples of pink noise and white noise:

Pink Noise Sounds

• Rainfall

• Gentle wind

• Ocean waves

White Noise Sounds

• TV or radio static

• Fan noise

• Air conditioner hum

• Vacuum cleaner sound

You can listen to pink or white noise on many digital platforms, including YouTube, Spotify and special apps. Even better, a dedicated machine lets you switch between both. Try the best white noise machine for sleeping.

What’s the Best Noise Machine for Sleep?

Manta White Noise Machine blocks disruptions before they even reach you. It offers 25 gapless soundscapes, including white, pink and brown noise, nature sounds and sleep music.

Features:

• Powerful speaker comes with a power adapter and an 8-foot power cable.
• Power cable is compatible with any 10W (5V/2A) charger.
• Control pad's tactile design lets you adjust the speaker even in the dark from up to 32 feet away.
• Control pad is rechargeable via any USB-C cable.
• Multiple timer and volume settings with sound that gradually fades as the timer runs out
• 1-click, no-pair design for easy setup
• 100% LED-free design for zero light pollution

Conclusion: Which Noise is Better for Your Sleep?

Pink noise vs white noise: which one's the winner? There's no universal answer because both mask disruptive sounds to create a stable sound environment. It depends on your preferences, sleep needs and room acoustics.

For many people, pink noise sounds more soothing and natural. It's good at masking low-frequency, disruptive sounds like traffic, household appliances or noisy next-door neighbors.

Meanwhile, white noise has a consistent, unchanging sound. It's the better option for sudden, varied sounds, like voices or doors closing.

Experiment with both pink and white noise to see which one helps you sleep better. You might find that a combination of both works best. Whichever you choose, keep the volume low and let it cover the noise rather than drown it out completely.

Not sure which sound suits your room? Manta White Noise Machine lets you test them from one device at your preferred volume, plus a timer so it doesn't play all night long.