sleepy.land – calming sound machine
Noise
Warmth
Waves
Interval
Mix brown, pink, or white noise with procedural ocean waves and airplane-like rumble for sleep, relaxation, or focus. Free in your browser.
Sleepyland is a free browser sound machine. It synthesizes brown, pink, or white noise, procedural ocean waves, and an airplane-like rumble in the page. The sound generator uses no recorded or hosted audio files, product accounts, or server-side audio. Settings are stored on this device; categorical sound mode and session kind can also appear in bounded anonymous production analytics.
Choose Sleep, Relax, or Focus. Each state is a distinct engine recipe with its own rhythm, spectrum, and movement. Energy scales movement depth and pace without changing volume. Tune reveals noise color, shared warmth, independent noise and wave levels, and wave pace. Session plans are Endless, Countdown, and Focus Interval.