🎵 Noise Type
⬜White Noise
🩷Pink Noise
🟤Brown Noise
🟦Blue Noise
The Noise Generator is an online audio tool based on the Web Audio API that generates white, pink, brown, and blue noise in real time. No software or audio files to download — just open your browser. Supports volume control, frequency range adjustment, and sleep timer. Ideal for sleep, focus, and meditation.
Sleep Aid: Brown noise masks environmental sounds for faster, better sleep.
Focus: White noise creates a stable sound field for improved productivity.
Meditation: Pink noise is soft and natural, perfect for meditation and relaxation.
Baby Soothing: Simulates womb-like sounds to calm crying babies.
Noise "colors" are based on spectral energy distribution: white noise has equal power at all frequencies (like white light), pink noise power decreases with frequency (3dB/octave), brown noise decreases faster (6dB/octave), and blue noise is the inverse of pink (more high-frequency energy). Choose based on personal preference and use case.
White noise: equal power at all frequencies, like TV static, most uniform. Pink noise: more low-frequency power, like a waterfall, softer and more natural. Brown noise: even stronger lows, like distant thunder, deepest. Brown noise for sleep, white noise for focus.
Noise masks sudden environmental sounds (cars, voices) through the masking effect, creating a stable sound field that reduces the brain's alertness to sound changes. A steady noise signal helps the brain relax and promotes sleep onset.
Not at reasonable volumes. Keep volume below 60 dB (normal conversation level) and limit use to 8 hours. If using headphones, keep volume even lower. Stop immediately if you experience tinnitus or discomfort.
No. This tool uses the Web Audio API to generate noise in real time in your browser. No software or audio files to download. Works in Chrome, Firefox, Safari, and other modern browsers.
Yes. This tool supports 15-minute, 30-minute, 1-hour, and 2-hour auto-stop timers, perfect for falling asleep without playing all night.
White noise: focused study, office masking, baby soothing. Pink noise: meditation, light sleep aid, reading. Brown noise: deep sleep, anxiety relief, low-frequency masking. Blue noise: high-frequency masking, alertness.