Blend three noise colors with real rain, fan and ocean recordings, adjust each level, and set an optional sleep timer.
Turn on at least one sound to start the timer.
Timer finished — all sounds faded out.
Presets
Even energy across all frequencies — masks conversations and keyboard noise.
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Softer highs, closer to steady rain or wind through trees.
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Deep rumble with most energy in the low end, like a distant waterfall.
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A real rainfall recording with fine, steady detail that masks indoor sounds.
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A steady fan recording with natural airflow and a low mechanical hum.
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Real shore waves with distinct swells, breaks and receding water.
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Tap On under any card, or start from a preset. Several sounds can play at once, each with its own level.
Set the master volume first, then use each card slider to shape the blend. To bring a sound forward, raise that card instead of the master.
For bedtime, choose 15–90 minutes under Sleep timer. When the countdown ends, every sound fades out together.
Stop all silences everything. Play mix restores the mix you were using, so you do not have to rebuild it.
Noise colors describe how energy is spread across frequencies — that is what makes one sound harsh and another deep.
White noise has equal energy at every frequency, like static from a radio tuned between stations. Because the high frequencies are strong, it is very effective at masking speech and sharp sounds, but some people find it hissy for long sessions.
Pink noise drops by about 3 dB per octave, so the low end is louder and the top end is softer. It sounds more natural — like steady rainfall, wind in leaves or a waterfall heard from a distance — and is easier to listen to for hours.
Brown noise drops faster still, concentrating energy in the bass. It sounds like a deep rumble or a distant aircraft cabin, and many people use it to cover low-frequency distractions such as traffic, footsteps or neighbours.
Keep the overall level just loud enough to cover the background, roughly at the level of a quiet conversation. The master slider scales the whole mix; each source slider sets its share of the blend. If you can still hear the noise clearly when you stop thinking about it, it is probably louder than it needs to be.
For work, favour steady low-frequency sound — brown noise with a little fan — so sudden noises do not pull your attention. For sleep, keep the mix even and start the timer before lying down; ocean or rain with brown noise masks household sounds without adding sharp detail.
This is called auditory masking. A steady background sound makes speech, footsteps and closing doors feel less abrupt, so they are easier to ignore. It does not cancel sound waves like active noise-cancelling headphones. Set the level just high enough to make the distraction less distinct, not to drown out the whole room.
White, pink and brown noise change very little, so they work well as a steady base. Rain, fan and ocean recordings add natural texture and a sense of space. For focused work, keep the base noise dominant and add the environmental sound quietly. Ocean waves have more variation and can draw attention if they are too loud.
Not necessarily. Some people find a steady background sound helpful, while others are sensitive to continuous hiss or low-frequency rumble. Start quietly with pink or brown noise and use the sleep timer. If you feel more alert or uncomfortable, try a different sound or stop using it. White noise is not a substitute for professional assessment or treatment of insomnia, tinnitus or other persistent concerns.
White, pink and brown noise are synthesized live with the Web Audio API. Rain, fan and ocean are real recordings hosted on this site and loaded automatically the first time you enable each sound. No manual downloads, microphone access or data uploads are involved.
Yes. Each source has its own volume and on/off button, and every active source is mixed into the master output. Combine rain with brown noise, or start from a preset and adjust the sliders.
Browsers require a user gesture before audio can start. Pressing the button or a source toggle counts as that gesture. If the mix sounds silent, check that at least one source has a volume above zero and that the master volume is not at zero.
All sounds fade out over about a third of a second and the timer returns to Off. You can also stop everything manually with Stop all, which cancels the timer immediately.
It is generally used to mask background noise. Keep the volume low — around the level of a quiet room — and avoid placing the device close to your head. If you have hearing concerns or use it for a child, follow your doctor’s advice.
Pair the sound with a timer or clock to build a complete focus routine.