Question 1

What is white noise?

Accepted Answer

White noise is a random signal with equal intensity at all frequencies. It sounds like static or a hissing sound and is commonly used for sleep, focus, and masking background noise.

Question 2

What is the difference between white, pink and brown noise?

Accepted Answer

White noise has equal power across all frequencies. Pink noise has more power at lower frequencies (deeper sound). Brown noise has even more low-frequency emphasis (like a deep rumble or waterfall).

Question 3

Can I set a sleep timer?

Accepted Answer

Yes. Select a timer duration from the dropdown and the noise will automatically stop after that time.

Question 4

Is this white noise generator free?

Accepted Answer

Yes, completely free with no signup. All audio is generated in your browser — no data is sent to any server.