Pink noise or brown noise for studying?

Brown if the problem is people talking; pink if it is general household noise. Pink is the more neutral default.

Is pink noise the same as rain?

Close in spectrum. Rain adds natural variation, which some people prefer for long sessions; pink noise never changes, which others prefer.

Is this generated or recorded?

Generated, so it is exactly pink and never loops audibly. The recordings on the other pages are real field recordings.

All sounds

Pink noise for focus and sleep-free calm

Halfway between the hiss of white noise and the rumble of brown. Pink noise carries equal energy per octave, which is roughly how the ear expects the world to sound. Press play; the timer runs in the same tab.

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25:00Ready

Each Kiri is a focus block followed by a break. Four in a row earns a long break.

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Soundscape

Binaural beats

Off (headphones only)

Calm focus, relaxation. Headphones only: through speakers the two tones mix into a wobble.

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What you are hearing

Pink noise drops by 3 decibels per octave, so each octave carries the same energy. Steady rain, a waterfall heard from a distance, and the sea between waves are all close to pink. It is the colour most people describe as "natural" without knowing why.

What it does

Pink noise masks the middle of the spectrum, where most household sound lives: a television through a wall, traffic, an appliance. It covers speech less thoroughly than brown noise and is less tiring than white. Studies of pink noise and sleep exist; for daytime focus the mechanism is the same as for every colour, which is masking.

When to choose it

Home office with ordinary background noise: pink. Open-plan office with talking: brown. High-pitched intrusions: white. If a synthetic noise feels flat, rain is pink noise with life in it.

Full comparison and sources in our article on brown, white and pink noise.

Questions

Pink noise or brown noise for studying?: Brown if the problem is people talking; pink if it is general household noise. Pink is the more neutral default.
Is pink noise the same as rain?: Close in spectrum. Rain adds natural variation, which some people prefer for long sessions; pink noise never changes, which others prefer.
Is this generated or recorded?: Generated, so it is exactly pink and never loops audibly. The recordings on the other pages are real field recordings.