White Noise
Constant power across all frequencies. Ideal for masking distracting speech.
FREQUENCY: HIGH
Brown Noise for Focus
The deep rumble, set up properly for a working session rather than just switched on.
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Sound Library
Calibrated frequencies for deep work and relaxation.
Color Noises
Continuous frequencies for auditory masking.
Brown Noise
Deep, bass-heavy rumble reminiscent of a distant waterfall or thunder.
FREQUENCY: LOW
Pink Noise
Balanced spectrum that sounds more natural to the human ear, like steady rain.
FREQUENCY: BALANCED
Red Noise
Even deeper than Brown noise, focusing heavily on the low-end spectrum.
FREQUENCY: LOW
Black Noise
Near-silence with subtle low-frequency drift. Meditative, like the sound of a quiet room at night.
FREQUENCY: NEAR SILENT
Grey Noise
Psychoacoustically equalized to sound equally loud at every frequency.
FREQUENCY: EQUALIZED
Ambient Sounds
Natural soundscapes recorded in high fidelity.
Rain
Gentle rainfall creating a natural, soothing atmosphere perfect for deep concentration.
SOURCE: RECORDED
Rain on Tent
Rainfall on a tent canvas — cozy, immersive and deeply relaxing for focused work.
SOURCE: RECORDED
Ocean Waves
Rhythmic ocean waves rolling onto shore — a timeless natural soundscape for calm focus.
SOURCE: RECORDED
Wind
Steady breeze flowing through open spaces — airy and expansive for clear thinking.
SOURCE: RECORDED
Forest Stream
A gentle brook flowing through a quiet forest — peaceful and grounding for deep work.
SOURCE: RECORDED
Meadow
Birds and insects in a sunlit meadow — warm, organic ambience for relaxed focus.
SOURCE: RECORDED
Binaural Beats
Brainwave entrainment through stereo frequency offset. Layers with any noise above.
Headphones required for binaural effect
Delta
Deep sleep and healing. Ultra-low 2 Hz beat for total relaxation.
BEAT: 2 Hz
Theta
Meditation and creativity. 6 Hz beat for deep introspection and flow.
BEAT: 6 Hz
Alpha
Calm focus and learning. 10 Hz beat for relaxed concentration.
BEAT: 10 Hz
Beta
Active thinking and energy. 14 Hz beat for alertness and problem solving.
BEAT: 14 Hz
Why this one, for hours
Brown noise has become the default background for long focus sessions for one practical reason: it does not wear you out. Almost none of its energy lands in the band where your hearing is sharpest, so the level that fills a room is still a level you can tolerate at the end of a third hour — which is not true of white noise.
That is a different property from raw masking strength. White noise covers speech better. Brown noise covers enough, for longer, which over a working day is the number that matters.
Setting the level
This is where most people get it wrong, in both directions. Too quiet and it does nothing except add a hum you are aware of. Too loud and it becomes the thing you are listening to — and because brown noise is dark, it is easy to push far higher than you would tolerate from a brighter sound without noticing.
A method that works: set it while the room is quiet, not during a noisy moment. Bring it up until it is unmistakably there, then back it off in small steps until it drops out of your attention entirely. The last setting before it disappears is the one you want, and it is almost always lower than the one you would have picked.
A setup worth copying
The combination most people here converge on, and a reasonable place to start:
- Brown noise at a moderate level, set before the session begins
- An alpha binaural layer underneath at low volume, on headphones
- A 50-minute block, or the Pomodoro timer for repeating rounds
- Nothing adjusted once the block has started
When to switch
Brown noise is weak against nearby conversation, because voices carry in frequencies it barely has. If someone is talking two metres away, add white noise or pink noise on top rather than turning the brown up — the extra volume will not reach the frequencies that are the problem.
And if it stops working, change it for a day. Any background loses effect when it becomes completely invisible; a week on rain is often enough to make brown noise useful again.
Common questions
How loud should brown noise be for focus?
Lower than most people set it. Raise it until it is clearly present, then bring it down until you stop noticing it as a sound. Because it is dark, brown noise is easy to over-set without realising.
Does brown noise actually improve concentration?
It reduces the number of sudden sounds that reach you, which is a real effect. Beyond that, most of the benefit people report comes from association and consistency rather than anything in the sound itself. It is worth trying, not worth believing in.
What should I pair it with?
A timed block, and optionally a low binaural layer on headphones. Add white or pink noise on top if voices are the problem — brown noise alone will not cover speech.