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Free · In-browser · No upload

Noise Generator.

Blend white, pink, brown and green background noise, set a timer and download a seamless 30-second loop. Choose by sound preference, not promised outcomes.

Before-and-after illustration of Noise Generator: Noise color settings becomes Timed noise output through Blend spectral noise.
Before → process → afterSee the signal story, then hear it in the workspace.

MEASUREMENT MAP

Noise Color Mixer

Turn a signal into evidence you can inspect. A useful analyzer connects the raw trace, the measurement window and a clearly labeled result without pretending that one number explains the whole recording.

Before-and-after illustration of Noise Generator: Noise color settings becomes Timed noise output through Blend spectral noise.
Noise color settingsBlend spectral noiseTimed noise output
An analysis path: a bounded signal window produces comparable metrics and a visual trace while preserving the context needed to interpret them.
Open the full signal breakdownBest source, processing logic, limits and three-pass listening check
  1. Noise color settings

    Start with the right material

    Speaker checks, masking background distractions and creating neutral noise assets.

  2. Blend spectral noise

    Understand the transformation

    Browser DSP synthesizes the selected noise spectrum and can render a short local file.

  3. Timed noise output

    Verify the usable result

    Live noise playback or a generated clip, with export duration capped by the tool.

Spectral slope

Where this workflow stops

The output is not a sleep or health treatment. Keep levels moderate, especially on headphones; the downloadable render is limited to about 30 seconds.

THREE-PASS CHECK

Make the final decision by ear

  • Use the same window and settings when comparing two files.
  • Treat estimates as evidence, not as a substitute for listening.
  • Export or note the measurement context alongside the result.

How to use the noise generator

  1. Raise one or more color sliders — white, pink, brown or green — to build the sound you want.
  2. Set the master volume to a comfortable level for sleep, study or masking background noise.
  3. Pick a sleep timer (5 to 60 minutes) if you want the noise to fade out on its own.
  4. Press Play to listen, or download a seamless 30-second loop to repeat offline on any device.

This noise generator provides four colors that can be blended from bright static to a deep brown rumble. People often use steady noise to mask office sounds, create a consistent room bed or support relaxation; this is not a medical treatment and comfortable volume matters. The signal is generated locally, there is no source recording to upload to AudioWrench, and the downloaded loop can be played offline.

Noise Generator: quick answer and technical limits

Quick answer: A local generator for white, pink, brown and green-style noise with mixing and timed playback.

Best for
Speaker checks, masking background distractions and creating neutral noise assets.
How it works
Browser DSP synthesizes the selected noise spectrum and can render a short local file.
What you get
Live noise playback or a generated clip, with export duration capped by the tool.

Know before you use it: The output is not a sleep or health treatment. Keep levels moderate, especially on headphones; the downloadable render is limited to about 30 seconds.

Privacy: Selected audio is processed in this browser and is not uploaded to AudioWrench. Normal page assets can still be requested as described in the privacy notice. Privacy details →

FAQ

What is the difference between white, pink and brown noise?
White noise has equal energy at every frequency and sounds bright, like static or a fan. Pink noise rolls off the highs so it sounds softer and more balanced, similar to steady rain. Brown noise drops the highs even further for a deep, rumbling tone many people find the most relaxing for sleep.
Which noise color is best for sleep or focus?
There is no proven best color for sleep or focus. The spectra sound different and may mask different environmental sounds, so compare them at a comfortable level and choose by preference. This generator does not promise a sleep, attention or health outcome.
Can I download the noise as a loop to play offline?
Yes. The download panel renders 30 seconds of your exact mix to MP3 or WAV, and the loop is built to tile seamlessly. Set your media player or phone to repeat it and you have endless background noise that works without a connection or any app.
Does the sleep timer fade out so it doesn't wake me?
It does. Choose 5, 15, 30 or 60 minutes and the noise plays at full level, then fades out gently and stops on its own instead of cutting off abruptly. That smooth fade is designed not to startle you awake once you have drifted off.