White noise blends every audible frequency at equal intensity, creating a steady "shhh" that masks sudden sounds. It is widely used for focus, sleep and soothing babies. FocusFlow generates it live in your browser, so it never loops audibly and uses no bandwidth.
Benefits
- Masks unpredictable background noise that breaks concentration
- Creates a consistent sound environment for deep work or study
- Helps many people fall asleep faster and stay asleep
- Generated in real time, so there is no audible loop point
Use Cases
- Blocking office chatter or a noisy roommate
- Falling asleep in a noisy city apartment
- Soothing infants during naps
- Reducing the perceived loudness of tinnitus
Sounds in this category
White Noise
Equal energy across all frequencies — the classic masker.
Pink Noise
Balanced and natural — like steady rainfall.
Brown Noise
Deep, rumbling low end loved for ADHD focus.
Grey Noise
Perceptually flat — tuned to human hearing.
White noise is the most recognisable of the “color” noises — the steady static hiss you hear between radio stations or from an untuned television. Because it contains every frequency the human ear can hear at equal power, it is remarkably effective at covering up sudden, attention-grabbing sounds.
How FocusFlow plays white noise
Rather than streaming an audio file, FocusFlow synthesises white noise directly in your browser with the Web Audio API. That means playback starts instantly, never reveals a repeating loop, and works perfectly offline once the page has loaded.
Finding your color
If pure white noise feels too “bright” or harsh, slide down the spectrum toward pink and brown noise, which progressively reduce the high frequencies for a warmer, more natural sound.
Frequently Asked Questions
Is white noise good for focus?
Many people find white noise helps focus by masking distracting, irregular sounds with a constant backdrop. If you find broadband hiss harsh, try pink or brown noise, which emphasise lower frequencies.
Is it safe to play white noise all night?
Yes, at a moderate volume. Keep playback at a comfortable level — roughly the loudness of a quiet shower — and avoid placing speakers directly next to your head.
What is the difference between white and brown noise?
White noise has equal energy at every frequency and sounds bright. Brown noise rolls off the high frequencies, producing a deeper, softer rumble that many people find more relaxing.
Comparisons
Scientific References
- Noise-induced cognitive performance and white noise — National Library of Medicine
- White noise and sleep induction — PubMed