English
SuomiBrown noisesix versions, measured.
Brown noise puts most of its energy in the low end. Its power falls by about 6 dB each time the frequency doubles, so it sounds deep and soft, closer to a distant waterfall or heavy surf than to radio static. The name comes from Brownian motion, not from the colour.
- 6 sounds
- Deep brown free
- Single steady sounds
What brown noise is
The brown sounds in Hush share that falling shape. They differ in how quickly the top end drops away, which you hear as more or less rumble.
Across the group, the level between 2 and 12 kHz falls 5.3 dB per octave on average. Amber static is the darkest: it falls 5.8 dB per octave. Deep brown is the brightest: it falls 3.4 dB per octave.
Each is a single steady sound, with no layers to mix.
The six sounds, darkest first
The shape is each sound's level in nine bands from 2 to 12 kHz; tilt is its slope. Negative is darker.
Amber staticLow golden hushTilt −5.8 dBper octaveOne steady soundHush Plus- Cedar noiseWarm wooden hushTilt −5.8 dBper octaveOne steady soundHush Plus
Deep staticDark and weightlessTilt −5.6 dBper octaveOne steady soundHush Plus- Graphite noiseDense and deeply mutedTilt −5.6 dBper octaveOne steady soundHush Plus
- Midnight brownSub-low and envelopingTilt −5.4 dBper octaveOne steady soundHush Plus
- Deep brownLow and groundingTilt −3.4 dBper octaveOne steady soundFree
Brown noise against other colours
Guides about brown noise
Noise coloursNoise coloursWhat each noise colour means, from brown to violet, which names have no strict definition, and how Hush's own noises measure.
SleepSound for sleepHow to choose a sleep sound you stop noticing, how loud to play it, and whether it should stop once you are asleep.SleepSleep timerHow long a sleep timer should run, whether to fade out or stop, and how Hush's timers work: 1 minute to 12 hours, Add 15 minutes, or until you stop.
SleepCabin soundsWhy the inside of a plane, train or car sounds so deep, with Hush's ten travel sounds measured against brown noise.
Focus and noiseOutside noiseTraffic, footsteps and voices stand out less in a room that is not silent. Matching a sound to the noise, and why bass is the hardest to cover.Other sounds in Hush
Pink noiseThe balanced colour. Every octave carries the same power.
White noiseThe bright colour. Every frequency carries the same power.Violet noiseThe sharpest colour. Power rises by about 6 dB each time the frequency doubles.Water soundsRain, surf, streams and fountains.
Nature soundsWind, weather and fire.
Home soundsFans, moving air and household machines.
Travel soundsCabins, carriages and roads at night.Questions
Is brown noise the same as red noise?
Yes. Red noise and Brownian noise are other names for the same spectrum, in which power falls by about 6 dB per octave.
Which brown noise sounds are free in Hush?
Deep brown is free, with no subscription or account. The other five are part of Hush Plus.
How were these levels measured?
Each sound was measured in one-octave bands centred from 2 to 12 kHz, the range Hush uses for pitch matching. A level is given in decibels relative to that sound's overall level, so it shows the shape of a sound, not how loud it plays. The figures come from Hush 1.0.0 (9).
