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Free · In-browser · No upload

Noise Generator.

Blend white, pink, brown and green noise. Inspect actual samples, control playback and save the same current 30-second mix. Choose a texture, not a promised sleep or focus outcome.

Before-and-after illustration of Noise Generator: Noise color settings becomes Timed noise output through Blend spectral noise.
Illustrative signal storyNot live telemetry. Current samples and levels appear in the workspace.

MEASUREMENT MAP

Noise Color Mixer

Keep your chosen mix from preview to file. One stable palette feeds controlled live sources and the current export, with real digital sample metrics and no silent boost of quiet settings.

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
Illustration of mixing and timed output, not a waveform or acoustic measurement. The workspace shows your actual generated samples.
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 noise explicitly, or save the current 30-second mix without starting sound. Prefer WAV for sample-continuous looping; MP3/player gapless behavior is not guaranteed.

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 four-color noise mixer with actual sample preview, independent levels, controlled playback and a current-mix export.

Best for
Comparing generated textures and making reusable noise assets without uploads.
How it works
A stable 44.1 kHz two-second palette is mixed with attenuation-only headroom, then Master gain. Native source scheduling controls fades and the editable audio-clock timer.
What you get
Thirty-second WAV or MP3 from the same pattern and levels, or a local workspace handoff; waveform, sample peak and digital RMS describe the current mix.

Know before you use it: Not a sleep, focus or health treatment, calibrated room measurement or true-peak limiter. The file repeats a two-second pattern; MP3/player gapless behavior is not guaranteed. Browser or OS suspension can pause the timer.

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 →

Read the full colored-noise mixing, timer and current-export guide →

FAQ

What is the difference between white, pink and brown noise?
White is broadly even per frequency band; pink distributes energy approximately by octave; this tool's brown layer uses leaky integration and sounds more low-weighted. Green here is a 500 Hz bandpass. Finite generated patterns are not certified test noise.
Which noise color is best for sleep or focus?
No best sleep or focus outcome is promised. Compare generated textures at a low, comfortable device volume and choose by preference. This tool is not a treatment or an at-ear level measurement.
Can I download the noise as a loop to play offline?
Yes. Save the same current mix as a 30-second 44.1 kHz stereo WAV or MP3: fifteen repetitions of the two-second pattern with an eight-millisecond cyclic crossfade. Master volume is preserved instead of peak-normalizing quiet files. Prefer WAV for sample-continuous loops; MP3 and player gapless behavior is not guaranteed.
How does the sleep timer stop playback?
Choose 5, 15, 30 or 60 minutes of the audio clock, followed by a four-second fade and scheduled source stop. Changing the timer restarts its countdown; Off cancels it. Browser or OS audio suspension can pause the clock, so this is not a wall-clock alarm. Stop all audio or Escape stops immediately.