What’s the best mix for sleep or masking tinnitus?

Pink + brown between 30–60% each is a solid starting point for sleep and masking. Add a little blue for air if desired. Use the stereo width sparingly for a wider field.

Will this keep playing in the background?

Most desktop browsers do. Mobile browsers may suspend audio after screen lock; a quick tap usually resumes audio.

Noise Blender

White • Pink • Brown • Blue — smooth fades, stereo width, sleep timer

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Master70%

Stereo Width50%

Smooth fade in/out Remember mix

Tip: Pink + Brown around 30–60% each is usually best for sleep and masking.

White0%

Adaptive swell

Pink60%

Adaptive swell

Brown40%

Adaptive swell

Blue0%

Adaptive swell

Adaptive Mode🎤 Inactive

Enable on any noise to respond to environmental spikes

Sensitivity:

50%

Adaptive Max:

50%

Sleep TimerOff

Mobile note: browsers require a tap to start audio; background behavior varies by device.

Frequently Asked Questions

What is Noise Blender?

Noise Blender is a lightweight, in-browser mixer for white, pink, brown, and blue noise. It's free, privacy-friendly, and runs locally using the Web Audio API.

Why does brown noise sound smoother here?

We use a leaky-integrator brown generator with DC blocking and long loop lengths, then equal-power crossfades at the loop boundary — avoiding periodic clicks and rhythmic "chatter."

What mixes do you recommend?

For sleep or tinnitus masking: Pink 30–60%, Brown 30–60%, White low, Blue optional for air. Keep Stereo Width moderate to avoid fatigue.

Does it work offline?

Yes — after first load, most browsers cache the app so it runs offline.

Is it free and private?

Yes. No sign-ups to use the app; the email form below is optional if you want updates from PeaceDrone.

What about the microphone permission (Adaptive Mode)?

Your audio input is never recorded, stored, or sent anywhere. Adaptive Mode analyzes sound levels only locally in your browser to adjust noise volume in real-time. When you click Stop, listening immediately stops and any microphone access is released. This is pure local processing—your audio never leaves your device.