Pink Noise vs White Noise: What Do Smart Bassinets Play?

What the listing words mean

When you compare smart bassinets, you will see sound features listed as "white noise," "soothing sounds," or "sleep sounds." Some listings name the type of noise, such as pink or white. Others use a general term without specifying the frequency profile.

White noise is a sound that contains all audible frequencies at roughly equal intensity. It is often described as a steady hiss, similar to a radio tuned to static. Pink noise is similar but has more energy in the lower frequencies, so it sounds deeper and less harsh. Both are common in sound machines and smart bassinets.

A listing that says "white noise" may actually include multiple sound options, including pink noise or other variants. The exact sounds are usually listed on the maker's product page. For example, the UPPAbaby Soma page lists "4 soothing sleep sounds" without naming the types. The Happiest Baby page sells a "Soothing White Noise Sleep Sounds" MP3, and the SNOO bassinet is described as imitating "the sounds and movements of your baby's favorite place, the womb."

When you read a listing, look for the specific sound names. If the listing only says "white noise," check the maker's page for a list of included sounds. If the type is not stated, you can ask the maker directly. For more on how to read sound features, see our guide to bassinets with white noise.

How pink and white noise differ

The difference between pink and white noise comes down to frequency balance. White noise has equal energy per frequency, which means the higher frequencies are just as loud as the lower ones. This creates a bright, hissing sound. Pink noise reduces the energy of higher frequencies, so the sound is deeper and more muffled.

In practical terms, white noise can sound like a fan or a vacuum cleaner. Pink noise sounds more like rainfall or a distant waterfall. Neither is inherently better; it is a matter of preference. Some people find white noise too sharp, while others prefer its consistent hiss.

Smart bassinets may offer one type or several. The Cradlewise page mentions a built-in sound machine but does not specify the noise type. The UPPAbaby Soma lists "4 soothing sleep sounds" with "enhanced sound quality." The SNOO page refers to "white noise" as part of its soothing features.

When comparing listings, note whether the maker names the sound types. If a listing says "white noise" but the maker's page mentions multiple sounds, you may be able to choose between pink and white noise in the app or on the unit. For a broader look at sound options, see our guide to smart bassinets.

What to look for on the maker's page

The maker's page is the best place to see which sounds are included. Look for a section called "Features," "Specifications," or "Sounds." The UPPAbaby Soma page lists "4 soothing sleep sounds" under features. The Cradlewise page mentions a "built-in sound machine" without naming the sounds. The Happiest Baby page sells a separate white noise MP3 and describes SNOO as imitating womb sounds.

If the type of noise is not stated, you can ask the maker. Questions to ask include: Which specific sounds are included? Is there a pink noise option? Can I adjust the volume? Are there multiple sound levels?

Some bassinets allow you to control sounds through an app. The UPPAbaby Soma has Bluetooth app control to adjust "motion, speed, sound, and presets." The Cradlewise app lets you "personalize settings." If you want to change sounds without getting up, an app-connected model may be useful. See our guide to app-connected bassinets for more.

Also check whether the sound is continuous or has a timer. Some bassinets have a timer for motion and sound. The listing may say "timer" or "auto-off." If not stated, ask the maker.

Comparing sound features across bassinets

When comparing two bassinets, look at the sound features side by side. Note whether each lists the type of noise, the number of sounds, and whether there is volume control. Also note if the sound is built-in or requires a separate device.

Some bassinets have a built-in sound machine, like the Cradlewise. Others may only play sounds through an app or a connected device. The UPPAbaby Soma has built-in sounds and Bluetooth control. The SNOO has white noise as part of its soothing features.

If you already have a separate sound machine, you may not need a bassinet with built-in sounds. But if you want an all-in-one unit, look for a model that lists the sound types and controls.

For a household that wants no app, check if the bassinet has onboard controls for sound. The UPPAbaby Soma has a "touch-sensitive, backlit UI" for adjustments. Other models may have buttons or a remote. If the listing does not mention onboard controls, ask the maker. For more on choosing between app and non-app models, see our guide to smart bassinets.

What this site cannot tell you

This site compares stated details from listings and maker pages. It does not have data on how effective a particular sound is for any baby. The choice between pink and white noise is personal, and no listing can guarantee a specific outcome.

The site also cannot advise on safe sleep practices. For any questions about sleep environment, follow the maker's manual and read the official pages listed in the sources, such as the CPSC and the NICHD Safe to Sleep pages.

When you receive your bassinet, follow the assembly and use instructions in the manual. If you have questions about sound features, contact the maker directly. For more on setup, see our guide to bassinet assembly.

What to pick for your situation

Questions

Is pink noise better than white noise?

Neither is objectively better. Pink noise has more low-frequency energy, so it sounds deeper. White noise has equal energy across frequencies, so it sounds like a steady hiss. Preference varies by person.

Do all smart bassinets play white noise?

No. Some bassinets have built-in sound machines, while others do not. Check the listing and maker's page for sound features. If not stated, ask the maker.

Can I adjust the volume of the sound on a smart bassinet?

Many bassinets with built-in sounds have volume controls, either on the unit or through an app. Check the maker's page for volume settings. If not listed, contact the maker.

What if the listing does not specify the type of noise?

Check the maker's product page for a list of included sounds. If the type is still not stated, ask the maker directly. The listing may use "white noise" as a general term.

Can I use my own sound machine with a smart bassinet?

Yes, you can place a separate sound machine near the bassinet. However, if you want an all-in-one unit, look for a bassinet with built-in sounds.