Instant A/B/C/D Acoustic Noise Color Comparator
Compare synthesized noise colors in real time with zero loop seams. Click any spectrum card below to switch or blend acoustic masking layers immediately.
1. Click to Compare Synthesized Noise Colors
The one-sentence difference between brown and pink noise
Pink noise reduces high-frequency energy by 3 dB per octave so it sounds like steady, moderate rainfall; brown noise reduces high-frequency energy twice as fast—by 6 dB per octave—removing almost all upper hiss so it sounds like a deep waterfall or the inside of a cruising airliner.
If you want the full mathematical breakdown of all seven noise colours (including white, green, blue and grey), see our noise colour spectrum guide. This page is strictly about the practical choice most people face every day: should you put on brown noise or pink noise right now?
Brown noise vs. pink noise across 8 real-world situations
| Use Case | Better Choice | Why One Wins in Practice |
|---|---|---|
| ADHD & busy internal monologue | Brown noise (or Deep Brown) | Zero high-frequency sibilance means you can listen on headphones for hours without ear fatigue; the heavy low-mid cushion feels grounding. |
| All-night bedroom sleep | Pink noise (or a 50/50 blend) | Pink noise covers a wider frequency span, so it masks both a partner's breathing and early-morning birdsong better than bass-heavy brown noise alone. |
| Blocking office chatter & voices | Pink noise (or Green noise) | Human speech consonants ("s", "t", "c") live between 1,000 and 4,000 Hz. Brown noise drops so low by 2,000 Hz that voices cut right through it. |
| Blocking traffic rumble, footsteps & bass | Brown noise | Most of brown noise's power sits below 250 Hz, directly overlapping street lorries, upstairs footsteps and HVAC hum. |
| Listening on a phone speaker | Pink noise | Tiny phone speakers barely reproduce frequencies below 180 Hz, which strips brown noise of its warmth and makes it sound flat. |
| Listening on over-ear headphones | Brown noise | Full-size headphone drivers reproduce the 60–200 Hz bass region cleanly, making brown noise feel like a warm acoustic cocoon. |
| High-pitched tinnitus masking | Pink noise | Because most tinnitus rings between 3,000 and 8,000 Hz, pink noise reaches the pitch of the ringing at a much lower overall volume than brown noise. |
| Reading & long writing sessions | Tie — blend both | Brown noise at 45% + Pink noise at 20% gives you the deep warmth of brown noise with just enough midrange air to hide keyboard clicks and distant talk. |
Do a 20-second ear test right now
Reading about decibel slopes is no substitute for hearing how your own headphones or speakers render them. Open the Sounds panel at the bottom of the screen and try this quick A/B comparison:
- Solo Pink Noise at 50%: Turn off Brown Noise and listen to Pink Noise alone for ten seconds. Notice the gentle "shhh" in the upper register—very close to steady rain on a pavement.
- Swap to Brown Noise at 50%: Turn off Pink Noise and switch on Brown Noise. The upper "shhh" vanishes, and the sound drops into your chest like distant surf or thunder.
- Try Deep Brown at 50%: If even standard brown noise feels slightly airy on your headphones, switch to Deep Brown, which rolls off almost everything above 250 Hz.
What the sleep and focus studies actually tested
Here is something worth knowing when you read articles online: brown noise went viral on social media, while pink and white noise went into the laboratory. Almost all peer-reviewed sleep studies on acoustic stimulation—such as Ngo and colleagues' 2013 Neuron experiment using timed pink-noise pulses during slow-wave sleep—used pink noise because its 1/f spectrum mirrors the natural frequency distribution of brain oscillations. Likewise, the 2024 meta-analysis in the Journal of the American Academy of Child & Adolescent Psychiatry that found a small task-performance benefit for youth with ADHD symptoms pooled studies that mostly tested white and pink noise.
Does that mean pink noise is "scientifically better" than brown noise for desk work? Not necessarily—it mostly means researchers defaulted to standard signal-processing generators that had white and pink switches. In everyday continuous listening, comfort determines whether you keep a sound on for a 50-minute focus block, and for headphone users who hate high-frequency hiss, brown noise often wins on comfort alone.
Frequently asked questions
Is brown noise or pink noise better for sleep?
Pink noise is the better all-round sleep masker if you need to cover varied sounds like birds, doors and light traffic. If you are sensitive to high frequencies or trying to mask low-frequency street rumble, brown noise (or a blend of both) feels warmer and less intrusive.
Why does brown noise sound quieter than pink noise at the same slider level?
Human ears are naturally most sensitive between 1,000 Hz and 4,000 Hz and much less sensitive to deep bass. Because brown noise puts most of its energy in the bass, it sounds softer to the ear at the same electrical amplitude.
Which noise colour is best for ADHD?
In community use, brown noise and deep brown noise are the clear favourites because they quieten background distractions without any tiring high-end static. In clinical research, pink and white noise have the most published data.
Can I play brown noise and pink noise at the same time?
Yes, and that is what the Play button on this page does: 45% brown noise for warm low-end body plus 25% pink noise for gentle midrange speech masking.