Noise Generator
Free online noise generator. Play continuous white, pink, brown, blue, and violet noise in your browser using the Web Audio API. Adjustable volume and sleep timer for focus, sleep, studying, and sound masking. 100% client-side, no signup.
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What is Noise Generator?
The Noise Generator is a free, browser-based tool that plays continuous colored noise for focus, sleep, relaxation, and sound masking. Using the Web Audio API it synthesizes five noise colors in real time — white, pink, brown, blue, and violet — each with a distinct frequency balance. There are no audio files to download and nothing is uploaded: every sound is generated locally on your device. An adjustable volume slider, instant mute, and a 15–60 minute sleep timer let you tailor the experience, whether you are studying for an exam, working in a noisy office, or trying to fall asleep.
Key Benefits
- Mask distracting background noise to concentrate more easily, especially with ADHD
- Fall asleep faster and stay asleep by drowning out sudden disturbances
- Choose from five scientifically defined noise colors for different uses
- Save battery and data — real-time synthesis needs no streaming or downloads
- 100% private: no audio ever leaves your browser, no account required
Common Use Cases
- •Focus while working or studying in open-plan offices and shared spaces
- •Sleep aid for insomnia, tinnitus masking, or a snoring partner
- •Soothe crying babies with steady brown or white noise
- •Audio and speaker testing, room calibration, and headphone burn-in
- •Improve privacy in therapy rooms, HR interviews, and confidential meetings
How to Use the Noise Generator
- Pick a Noise Color: Choose from white, pink, brown, blue, or violet noise. Brown is great for sleep, pink for focus, and white for general sound masking.
- Press Play: Click the large round play button. The noise starts instantly using the Web Audio API — there is nothing to download.
- Adjust the Volume: Use the volume slider to find a comfortable level, or click the speaker icon to mute instantly.
- Optional: Set a Sleep Timer: Choose 15, 30, 45, or 60 minutes and the noise will stop automatically when the countdown reaches zero — perfect for falling asleep.
Key Features
- Five scientifically generated noise colors: white, pink, brown, blue, and violet
- Real-time synthesis with the Web Audio API — no downloads or looping audio files
- Adjustable volume slider with instant mute toggle
- Sleep timer with 15, 30, 45, and 60-minute presets that stop automatically
- Switch noise color instantly while playing, with seamless transition
- 100% client-side — no audio is ever uploaded, no signup required