White vs Pink vs Brown Noise: Which One Should You Use?

White, pink and brown noise are all random sounds. The difference is how their energy is spread across low and high frequencies, which changes how they sound and what they are good for.

Quick answer

White noise sounds bright and hissy. Pink noise sounds softer, like steady rain. Brown noise is deep and rumbly. Pink is the standard for testing speakers. Many people prefer pink or brown for sleep and focus. You can play all three free in our Noise Generator.

How they compare

White noise

White noise has the same energy at every frequency. Because our ears are more sensitive to higher sounds, it can feel harsh. It’s good at covering sudden sharp noises and at revealing buzzing or blown tweeters in a speaker.

Pink noise

Pink noise lowers the energy as frequency rises, so each octave has equal energy. That matches how we hear, which makes it sound balanced. Audio engineers use pink noise to test and tune speakers and rooms.

Brown noise

Brown noise drops even faster toward the highs, leaving a deep rumble. Many people find it the most relaxing. It is also handy for checking whether a woofer or subwoofer rattles.

Using noise to test your speakers

1. Open the Noise Generator and choose pink noise.
2. Play it at medium volume and listen from your normal seat.
3. Switch between Left and Right. Both should sound the same.
4. Listen for buzzing, flapping or a hiss from one side, which can point to a loose part or damaged driver.
5. Switch to brown noise to check bass, then to our Bass Test for a frequency-by-frequency check.

Using noise for sleep and focus

Keep the volume low, around normal conversation level or quieter, and use the sleep timer so it doesn’t play all night. Our decibel guide explains safe levels.