Generator Tools
White Noise Generator
Free white, pink, and brown noise generator for sleep, focus, and tinnitus relief. Filter, stereo pan, sleep timer, and presets for rain, ocean, and fan sounds.
Listen at low volume first
Noise is broadband, so it can sound louder than it looks on the meter. Start at the default 25 percent, then nudge the volume up only if you need it. Take breaks to protect your hearing.
Now playing
White noise
Unfiltered
Live spectrum from the analyser node. Updates in real time while noise is playing.
Maximum is 85 % of full scale to protect speakers and ears.
Noise color
Pick the spectral shape of the noise.
Filter
Shape the noise with an optional biquad filter.
Filter is off. The raw noise color plays through unchanged.
Sleep timer
Optional auto-stop. The audio gently fades to silence in the final seconds.
Time remaining
off
The timer starts when you press Play. Changing the timer while playing has no effect on the current session.
Presets
One-tap profiles that combine noise color, filter, and cutoff.
About the three noise colors
White noise
Equal power across every audible frequency. Sounds like a TV tuned to a dead channel or a static hiss.
Pink noise
Equal power per octave so it sounds smoother and more balanced than white noise. Often described as natural, like steady rain.
Brown noise
Even more low-end energy than pink, with very little high frequency content. Deep and rumbly, often described as ocean or waterfall.
How to use
- Tap Play noise. Your browser will start the audio engine on the first click; this is normal.
- Pick a noise color. White is bright and hissy, pink is smoother and more balanced, brown is deep and rumbly.
- Optionally turn on a filter. Use low-pass to soften high frequencies, high-pass to remove rumble, or band-pass to focus on a narrow band like fan or wind sounds.
- Adjust the cutoff slider to taste. Lower cutoff sounds darker and softer; higher cutoff lets more brightness through.
- Slide the stereo pan to push the sound to the left or right channel, or leave it centered.
- Set a sleep timer if you want playback to fade out and stop automatically.
- Try the presets like Rain-like, Ocean-like, Fan-like, or Tinnitus mask to load a tested combination in one tap.
- Tap Copy settings to save your current noise color, filter, pan, and volume as plain text.
About this tool
White Noise Generator plays continuous white, pink, or brown noise directly in your browser using the Web Audio API. White noise has equal energy at every frequency and sounds bright and hissy. Pink noise has equal energy per octave and sounds smoother and more balanced, often described as steady rain. Brown noise rolls off the highs even further and sounds deep and rumbly, often described as ocean or waterfall. An optional biquad filter lets you low-pass, high-pass, or band-pass the noise, so you can shape it into rain-like, ocean-like, or fan-like character without uploading or downloading any audio files. A stereo pan slider lets you push the sound to the left or right channel, useful for masking tinnitus in one ear or testing headphones. A sleep timer auto-stops playback after 10 minutes up to 2 hours, with a gentle fade in the final seconds so it does not jolt you awake. One-tap presets cover classic white, soft pink, deep brown, rain, ocean, fan, and a tinnitus-masking high band. A live spectrum analyser shows what the filter is doing in real time. All audio is generated locally; no audio files are fetched, recorded, uploaded, or stored.
Free to use. Works in your browser. No signup, no login.
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