You've probably seen "white noise," "pink noise," and "brown noise" mentioned and wondered what the colors actually mean. The good news: the idea is simpler than it sounds. The "color" just describes how a sound's energy is spread across low and high pitches. Here's the plain-English version.
What "color of noise" means
Any steady, hiss-like noise is a blend of every pitch at once, from deep lows to bright highs. What changes between the colors is the balance — how much energy sits in the low frequencies versus the high ones. Borrowing from how we name colors of light, sound engineers gave these balances names. Three come up most often.
White noise
Equal energy across all pitches. Because our ears are more sensitive to higher frequencies, white noise sounds bright and hissy — think of an untuned radio or TV static, or a hair dryer. It's the most "treble-forward" of the three. Many people use white noise when they want strong masking of sudden sounds, since all that high-frequency energy covers a wide range.
Pink noise
Balanced — the highs are gently turned down. Pink noise reduces the higher frequencies so no part dominates, which our ears hear as smooth and even. It sounds natural and rounded, a lot like steady rainfall or a waterfall heard from a distance. People who find white noise a touch harsh often prefer pink as a softer middle ground.
Brown noise
Deep and low-heavy. Brown noise turns the highs down even further, concentrating energy in the low end. The result is warm and enveloping — closer to heavy surf, a low rumble, or a strong wind. It's the least "hissy" of the three, which is why many people reach for brown noise for focus or relaxation when they want something that fills a room without any sharpness. (You may also see it called "red noise.")
Which one should you use?
There's no universally "best" color — it comes down to preference and what you're doing. A few starting points people commonly land on:
- If white noise feels harsh, try pink or brown for something warmer.
- If you want maximum masking of a noisy environment, white or pink covers the most range.
- If you want something deep and cozy to fade into the background, brown is the warmest.
The easiest way to find your preference is to compare them directly. In the free Drifted Rain mixer you can play White, Pink, and Brown noise side by side, nudge each slider, and even blend a little of one into another until it sounds right to you. You can also layer any of them under rain, fire, or wind to build something more textured.