White Noise for Sleep, Babies & Concentration
White noise contains all frequencies at equal intensity, creating a consistent sound blanket that effectively masks disturbances and improves sleep quality.
Free. No sign-up. Runs in your browser.
Benefits
- Most effective noise masking across all frequencies
- Clinically proven to improve infant sleep
- Reduces time to fall asleep by up to 40%
- Improves concentration in open-plan offices
- Helps manage tinnitus symptoms
When to Use
- Sleeping with a partner who snores
- Settling babies and newborns
- Working in noisy open-plan offices
- Studying in libraries or shared spaces
- Managing tinnitus throughout the day
The Science
A systematic review in Sleep Medicine Reviews analysed 38 studies and concluded that white noise significantly reduces sleep onset latency and improves sleep continuity. White noise works by raising the auditory threshold — making the brain less sensitive to sudden sounds that would otherwise trigger arousal from sleep.
Why It Works
White noise gets its name from white light, which contains all visible frequencies at equal intensity. Similarly, white noise contains all audible frequencies at roughly equal power. This flat frequency profile is what makes it so effective at masking other sounds — because it covers the entire spectrum, there are no gaps for disruptive sounds to slip through. Some people find pure white noise too harsh, which is why many prefer pink or brown noise.
How to Use on CalmLoop
Click “Open Mixer” above to launch the full ambient sound mixer. You can play this sound on its own or mix it with other sounds to create your perfect blend. Adjust volume levels individually, set a sleep timer, and save your favourite mixes as presets. CalmLoop generates all sounds in your browser using the Web Audio API — no downloads, no tracking, no account required.