🌊 White Noise Generator

Generate a steady, broadband hiss for listening comparisons and audio checks. No signup.

Volume50%

What is White Noise?

White noise contains all frequencies at equal intensity. It sounds like static or rushing air — perfect for masking distractions.

The Science of White Noise

White noise gets its name from white light, which combines every color of the visible spectrum. In the same way, white noise combines all audible frequencies (20 Hz to 20 kHz) at equal power, producing a flat frequency spectrum. This is why it sounds like a hiss, or the static between radio stations.

Because it delivers energy across the entire spectrum, white noise is the most effective “masker” — it covers the widest range of environmental sounds at once. That is why it is the default choice for privacy masking, sleep, and speaker testing, where any frequency imbalance becomes immediately audible.

Common Uses

•Background sound
•Personal listening preference
•Compare noise spectra
•Audio equipment testing
•Privacy masking

Compare Noise Types

White = all frequencies equal | Pink = balanced, natural | Brown = deep, low-heavy

White Noise Generator Pink Noise Generator Brown Noise Generator

Compare a bright broadband noise at a comfortable level

White noise uses random samples with approximately equal power per hertz. This generator loops a locally created two-second buffer, so it is a repeating sample of noise rather than an endlessly new random stream.

A repeatable check

Lower the page and system volume before pressing Play. Raise only enough to hear the texture comfortably.
For an equipment comparison, keep the same listening position and source settings, and listen briefly for an obvious channel or timbre difference.
Press Stop before comparing pink or brown noise. Adjust for similar perceived loudness; equal slider percentages do not guarantee an equal-loudness comparison.

What the result suggests

The hiss is too sharp: Lower the level or compare pink noise. White noise places more total power in each successive octave, which contributes to its bright character.
You notice a repeating pattern: The two-second buffer repeats by design. Stop and restart to generate another sample; this is not evidence of a recording or network fault.

What this cannot establish

The output spectrum is changed by your speakers and room. This page does not measure acoustic flatness or establish a safe exposure level, and it makes no treatment or sleep-outcome measurement.

Testing methods and limitations

Enable JavaScript to play sounds and use the microphone. You can still read this page’s instructions, result explanations, and frequently asked questions.

Frequently Asked Questions

What does white noise contain?

White noise has approximately equal power per unit of frequency. This generator loops a two-second random buffer, producing a broadband hiss. Your output device determines which frequencies reach you.

Can this measure a speaker response?

No. Listening can reveal a difference between speakers, but a flat waveform on screen is not a measured acoustic response. Use a calibrated microphone and measurement software for that.

How should I use the volume control?

Start low and stop if uncomfortable. The percentage is a digital gain control, not a sound-pressure reading. The tool cannot determine safe exposure or infant sleep settings.