White noise contains equal energy at every frequency, similar to how white light contains all colors. It sounds like a consistent "hiss" and is the broadest of the noise types.

How does pink noise differ from white noise?

Pink noise (1/f noise) has equal energy per octave rather than per frequency. It sounds warmer and more natural than white noise, resembling rainfall or wind.

Brown noise (also called red noise or Brownian noise) has even more energy in the lower frequencies, producing a deep rumble similar to strong wind or a waterfall. Many people find it the most relaxing.

Is audio generated on the server?

No. All audio is generated entirely in your browser using the Web Audio API. Nothing is sent to any server, so it works offline after the page loads.

Will this work on mobile?

Yes. The Web Audio API is supported on all modern mobile browsers. On iOS, you may need to tap the Play button once before audio starts due to browser autoplay policies.

Does it consume a lot of CPU?

Noise generation is lightweight. The frequency visualizer uses a Canvas animation loop, which may use a small amount of CPU. Stopping playback also pauses the visualizer.

White Noise Generator

Generate white, pink, or brown noise in your browser with volume control and a live frequency spectrum visualizer.

Noise Generator

Noise Type

Volume 70%

Stopped

Frequency Spectrum

White Noise

Press Play to see the spectrum

0 kHz 8 kHz 16 kHz 24 kHz

White noise — equal energy at all frequencies. Ideal for masking background sounds and improving focus.

Summary

Generate white, pink, or brown noise in your browser with volume control and a live frequency spectrum visualizer.

How it works

Select a noise type: White, Pink, or Brown.
Click Play to start audio output directly in your browser.
Drag the volume slider to adjust loudness.
The frequency spectrum visualizer updates in real time.
Click Stop to silence the audio at any time.

Use cases

Mask background noise for better focus or sleep.
Use as a reference signal when testing audio equipment.
Create ambient soundscapes for relaxation or meditation.
Help babies or light sleepers with consistent background sound.
Test speaker frequency response with different noise colors.

Frequently Asked Questions

Last updated: 2026-09-22 · Reviewed by Nham Vu