White Noise Generator
Multiple noise types and natural sounds with mixing and dynamic volume.
Simulate natural volume fluctuations
About This Tool
The White Noise Generator is a powerful audio tool that synthesizes high-quality audio in real-time using the Web Audio API. It offers various scientifically-based colored noises (white, pink, brown, blue, violet, grey, green) and rich natural ambient sounds (rain, wind, stream, forest, fireplace, thunder, etc.). You can play multiple sounds simultaneously with independent volume control to create personalized soundscapes. The unique dynamic volume modulation feature simulates natural volume fluctuations for a more organic listening experience. The built-in timer supports flexible custom durations, complemented by real-time spectrum visualization. It's the ideal tool for enhancing focus, masking noise, and improving sleep quality. All audio processing is done locally in your browser, ensuring privacy without requiring an internet connection.
Features
- 🎵 15 Sound Types: 7 colored noises (white/pink/brown/blue/violet/grey/green) + 8 natural sounds (rain/wind/stream/forest/fire/thunder/deep/fan)
- 🌊 Multi-track Mixing: Play multiple sounds simultaneously with independent volume control for personalized soundscapes
- 📈 Dynamic Volume Modulation: Simulates natural volume fluctuations with adjustable range (5-50%) and speed (1-10 levels)
- 📊 Real-time Visualization: 32-band dynamic audio spectrum display for intuitive sound characteristics
- ⏲️ Smart Timer: Preset options (15/30/45/60/90/120 min) or custom duration (1-1440 min) with countdown display
- 🎚️ Dual Volume Control: Master volume + individual sound volume for precise layering
- 💾 Auto-save: Remembers master volume, active sounds, and modulation settings for next session
- 🔊 Smooth Transitions: All volume changes use linear ramps (0.1s) to prevent abrupt changes
- 🔒 Local Processing: Real-time synthesis via Web Audio API, no uploads, privacy protected