White, Pink and Brown Noise: What's the Difference?

All three are steady background sounds. They differ in how much low and high pitch they contain, which changes how they feel.

White noise

White noise has equal energy at every frequency, so it sounds bright, like a hiss or static. It is good at covering sudden sounds such as voices and traffic.

Pink noise

Pink noise has less high-pitched energy than white noise, so it sounds softer and more balanced. Many people compare it to steady rainfall or wind.

Brown noise

Brown noise is deeper still, with strong low frequencies. It sounds like a low rumble or a distant waterfall.

Which to try

• Masking voices and sudden sounds: white noise.
• A softer everyday background: pink noise.
• Deep, calm background for focus or relaxing: brown noise.

Tips

• Keep the volume low enough that you could still hold a conversation over it.
• Use headphones or speakers that can play low sounds for brown noise.
• Use the sleep timer if you play it at night.
• Everyone is different. Try each for a few days.

A note on claims

Many people find steady noise helps them focus or relax. Research on sleep and focus is mixed, and noise is not a medical treatment. If you have trouble sleeping often, speak with a health professional.