🎵 No Ads · No Account · Browser Audio

Sleep Sounds Player

Scientifically synthesised ambient audio — brown noise, rain, ocean waves, fireplace, guitar and piano. Mix two sounds together, set a sleep timer, adjust volume. All generated in your browser with no downloads.

🎵 Choose Your Sound

Tap one to play. Tap a second to blend two sounds together.

⚙️ Volume & Timer

60%
Sleep timer
💡 Science tip: Brown noise and pink noise are the most effective for masking environmental sounds and reducing sleep onset time. Start at 50% volume and adjust to a level where you can just hear it over ambient room noise.

🔬 Why Sleep Sounds Work

🟤
Brown noise — deep, rumbling bass (like a waterfall or thunder). Most effective for masking sudden environmental noises. Preferred by people with tinnitus.
🌊
Ocean waves — rhythmic, naturally variable amplitude. Matches relaxed breathing patterns. Studies show reduced time-to-sleep onset.
🎸
Guitar & piano — slow, melodic tones at low volume activate the parasympathetic nervous system and reduce cortisol — the same mechanism as lullabies.
🔥
Fireplace — crackling fire has been shown to lower blood pressure and induce a mild hypnotic state — an evolutionary response to fire as a safety signal.
📄

Need to work with PDFs? Try SimplePDFTools.in

130+ free browser-based PDF tools — merge, split, compress, convert, edit, sign and more. No upload limit, no registration, 100% private.

Explore Free Tools →
All sounds are synthesised in your browser using the Web Audio API — no audio files are downloaded. Sound does not play in the background when the tab is closed. For best results use headphones or a speaker placed across the room.