Delta · 1 Hz
1 Hz beat
A very slow beat for the deepest part of sleep.
Some evidence · headphones
Sounds for sleep
Low, slow sound for winding down. Delta-range tones and gentle noise that fade into the background while you settle. Set a sleep timer and let it go quiet on its own.
Sounds in this collection
Delta · 2 Hz
2 Hz beat
A slow delta beat to settle toward sleep.
Some evidence · headphones
An even hiss that covers distractions.
Backed by research
A softer, balanced noise often used for sleep.
Some evidence
A deep, low rumble many find good for focus.
Some evidence
A mid-focused hush, like the steady sound of the outdoors.
Traditional use
Tuned to feel equally loud across every pitch.
Some evidence
Looking for something else? Browse every sound or explore the chakra ladder.
