White Noise Generator

About White Noise Generator

This professional noise generator creates white, pink, and brownian noise with advanced features including binaural beats for brain wave entrainment, a 10-band equalizer, and a lowpass filter with LFO modulation. Perfect for sleep, focus, relaxation, and meditation. All processing happens locally in your browser.

What's the difference between white, pink, and brownian noise?

White noise has equal energy across all frequencies, sounding like TV static. Pink noise has more bass and less treble, resembling rainfall. Brownian (brown/red) noise is even deeper, like a rumbling waterfall or distant thunder. Each type has different benefits for sleep and focus.

What are binaural beats?

Binaural beats are an auditory illusion created when two slightly different frequencies are played in each ear. Your brain perceives a third tone at the difference frequency. Different beat frequencies correspond to brain wave states: Delta (1-4 Hz) for deep sleep, Theta (4-8 Hz) for meditation, Alpha (8-14 Hz) for relaxation, and Beta (14-30 Hz) for focus.

What does the lowpass filter do?

The lowpass filter removes high frequencies above the cutoff point, making the noise warmer and less harsh. The LFO (Low Frequency Oscillator) modulates the cutoff frequency, creating a gentle sweeping effect like waves or breathing. Rate A and B control two independent LFOs for complex movement.

How do I use this for better sleep?

Try the 'Sleep' or 'Ocean' preset with the sleep timer set to 30-60 minutes. The noise will help mask disruptive sounds while binaural beats in the Delta range (1-4 Hz) can help induce deep sleep. The auto-shutoff ensures it doesn't play all night.

Can I export the audio to use offline?

Yes! Set your desired duration (up to 1 hour) and format, then click Download. MP3 and OGG are compressed formats ideal for phone storage, while WAV is lossless for highest quality. The exported file includes all your EQ and filter settings.