Delta Wave Generator
Delta waves (0.5–4 Hz) are the brain's slowest rhythm — the signature of deep, dreamless, restorative sleep.
Because delta rates are far below hearing, this tool delivers them as a binaural beat: a warm audible carrier in each ear, offset by your chosen delta rate. Headphones on, lights off, timer set.
Prefer real music at these frequencies?
A pure tone is a taste — a full composition is a bath. Our catalog is real healing music tuned to these exact frequencies, free on every platform.
Frequently asked questions
What are delta waves?
The slowest brainwave band (0.5–4 Hz), dominant during deep non-REM sleep — the stage where the body repairs and memory consolidates.
How do I use this to fall asleep?
Headphones (sleep-friendly ones help), volume low, start at theta 6 Hz while you wind down, then delta 2 Hz. Set the 60-minute timer — entrainment matters most while falling asleep.
More free sound tools
These tools support relaxation and wellness practice. They are not medical devices and don't treat any condition — for persistent sleep, hearing or anxiety concerns, please talk to a healthcare professional.