What is White Noise Generator?

White Noise Generator plays five steady noise tints — white, pink, brown, blue, and violet — straight to your speakers or headphones. Layer two tints together, smooth the harsh edges with a high-pass or low-pass filter, switch on breathing mode for a slow rise-and-fall, and pick a sleep or Pomodoro timer. Use it for focus, sleep, tinnitus masking, or settling a baby. Nothing is uploaded and nothing is recorded.

Five noise tints are generated in real time on this page: white sits flat across the spectrum, pink rolls off the highs by 3 dB per octave (closer to rain), brown drops them another 3 dB per octave (deep waterfall rumble), blue rises by 3 dB per octave for a crisp hiss, and violet rises by 6 dB per octave for a sharp, tinnitus-masking shimmer. You can also blend any two tints together with a balance slider, soften the result with a high-pass or low-pass filter, and enable breathing mode for a calm 8-second swell. Sleep timers run from 5 to 60 minutes with a 25-minute Pomodoro preset for focused work sessions, and any setup can be exported as a WAV for offline play in a meditation or sleep app.

How to use

1. Step 1 — Pick one of the five noise tints: white (full spectrum), pink (softer rain-like), brown (deep waterfall rumble), blue (crisp airy hiss), or violet (sharp high-end shimmer). Optionally layer a second tint with the Mix slider, and trim the tone with the high-pass or low-pass filter.
2. Step 2 — Use the volume slider to set a comfortable listening level.
3. Step 3 — Press play to start and stop to end. Optionally set a sleep timer to auto-stop after a set time.

When to use

• Masking open-plan office chatter so you can focus on writing or coding.
• Helping a baby fall asleep by playing soft pink noise from a tablet beside the cot.
• Reducing the perceived loudness of tinnitus while reading or trying to sleep.

Result

You can't focus in a noisy open-plan office. Pick pink noise, soften the harsh edge with the low-pass filter, set the volume to 40%, and start the 25-minute Pomodoro timer. The noise fades out on the final 30 seconds so the silence at the end of the session never startles you.

FAQ

What's the difference between white, pink, brown, blue, and violet noise?

Each tint shapes the same random signal differently. White has equal energy at every frequency and sounds like radio static. Pink reduces the highs by 3 dB per octave, closer to rain. Brown drops the highs again, like a deep waterfall. Blue rises by 3 dB per octave for a crisp airy hiss, and violet rises twice as fast for a sharp shimmer often used to mask tinnitus. Most people find pink or brown easier for long stretches; blue and violet are useful when you need to mask low-frequency hum.

Will playing this for hours damage my speakers or headphones?

No, as long as the volume is moderate. Noise is just an audio signal like music; speakers and headphones have no idea what they're playing. Keep the volume conversational and you can leave it on overnight without harming the hardware.

Why does pink noise sound 'better' than white noise?

Human hearing is more sensitive in the high-frequency range, so equal-energy white noise sounds piercing. Pink noise compensates by reducing the highs by 3 dB per octave, which matches how we perceive loudness across the spectrum and feels more balanced and natural.

Is the downloaded WAV file the same as what plays back on this page?

Yes, in tint, mix, and filter shape. The WAV is rendered with the same algorithm at 44.1 kHz 16-bit, which is CD quality. One thing the WAV cannot capture is breathing mode — that's a real-time volume effect, so the exported file plays at steady volume. Use the download when you want to loop the noise in a meditation or sleep app, or for situations where you can't keep this page open.

Does the sleep timer keep working if I lock my phone screen?

On most phones playback stops when the screen locks, because audio runs as part of the page. For uninterrupted overnight play, download the WAV file and loop it in your phone's music app, which keeps playing under a lock screen.

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