Guide / Updated 24 October 2026
Pink noise versus white noise
Pink noise has less high-frequency energy than white noise, so it commonly sounds softer. The difference is spectral balance, not a guaranteed difference in sleep quality. Source ↗
- Pink is less bright in the upper range.
- White can cover sharp sounds more broadly.
- The speaker changes the perceived difference.
How to try it
Switch between the two buttons without changing speaker volume. If white feels sharp, pink may be easier to leave in the background. If you need to cover a hiss or high squeak, white may do more masking at the same setting.
- Switch between the two buttons without changing speaker volume.
- If white feels sharp, pink may be easier to leave in the background.
- Your speaker and hearing shape the result.
What to consider
Your speaker and hearing shape the result. A phone can make the low end of pink noise quieter, while a larger speaker may make the contrast more obvious.
The spectrum behind the names
White noise distributes energy evenly across equal-width frequency bands in the idealized definition. Pink reduces higher-frequency energy relative to lower frequencies. On ordinary speakers this usually makes pink feel smoother, while white sounds like a brighter hiss. The worklet makes approximations for listening, not laboratory-standard reference signals.
The difference becomes less obvious on a weak speaker or in a loud room. A phone’s high-frequency emphasis can make white especially sharp; a larger speaker may make pink’s lower balance more apparent.
Compare with a fixed setup
Set the device speaker and browser volume low, then toggle between colors without moving the speaker. Ask which texture you can ignore after one minute. If you change a speaker or Bluetooth route, repeat from low volume because the same percentages no longer describe the same acoustic output.
A gentle pink wash may be comfortable but leave a high-pitched alert exposed. A white hiss may cover it more yet distract you. Match the actual interruption rather than treating the softer color as automatically better.
Avoid inflated sleep claims
A systematic review found limited and inconsistent evidence for continuous noise as a sleep aid. Studies that time pink pulses to sleep stages are not the same as continuous pink noise in this tool. No color button can promise deeper sleep.
If sound seems helpful, compare similar nights with and without it and keep the level comfortable. If the room is already quiet, silence may be the best option.
Decide what to keep
Choose pink if the brightness of white is the reason you stop listening. Choose white if its broad hiss handles a specific intermittent sound more effectively without feeling loud. A timer limits the period to when the tool has a job.
SleepMix can save a broader bedtime mix on iPhone, but the website remains the simplest way to hear the two colors side by side before deciding whether you want an app routine.
A middle choice is available
If white is too sharp and pink seems too soft to help, brown is unlikely to restore the missing high-frequency masking. Instead, change speaker placement or reduce the source of the interruption. The color buttons are choices within one limited tool, not a substitute for a quieter room.
Common questions
Are the two colors equally loud?
A digital gain value cannot guarantee equal perceived or physical loudness across spectra.
Can I switch without stopping?
Yes. Use the color buttons while the browser tool plays and keep the hardware volume fixed for comparison.
Which is better for bedtime?
No review establishes a winner for everyone. Choose the quieter useful texture in your room.