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Noise Generator
Play white, pink or brown noise at any level and see the filtered waveform on a canvas.
Generate noise
40%
Status: Stopped
Colour: White
Zero crossings: —
Buffer: —
How to use the Noise Generator
- Choose white, pink or brown noise from the colour menu.
- Press Play and set a comfortable level with the slider.
- Watch the waveform preview to see how the filter changes the samples.
Features
- White, pink and brown noise colours
- Generated from random AudioBuffer samples
- Pink and brown filtering done in the browser
- Waveform preview and level control
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Frequently Asked Questions
Common questions about the free online noise generator.
Open the tool, choose White from the colour menu and press Play. The noise loops until you
press Stop, and the level slider sets how loud it is.
White noise has equal energy at every frequency, pink noise falls about 3 dB per octave and
brown noise falls about 6 dB per octave.
The tool fills an AudioBuffer with random samples for white noise, then filters those samples
to shape pink and brown noise.
Pink noise sounds more natural than white noise and is often used to mask background sound,
test speakers and help with sleep.
Brown noise has a deep rumble that many people find calming for sleep, focus or masking low
frequency traffic and fan noise.
Yes. A two second buffer loops seamlessly, and because the samples are random the repeat is
impossible to notice by ear.
No. Every sample is created inside your browser with the Web Audio API and the result is
never uploaded or stored anywhere.
Yes. The generator works in any mobile browser that supports the Web Audio API, which covers
all current phones and tablets.
Last updated: October 10, 2026