Delta · 2 Hz
2 Hz beat
Some evidence Best with headphones
A slow delta beat to settle toward sleep.
2 Hz beat
A slow delta beat to settle toward sleep.
What the science says
A 2 Hz beat sits in the delta range tied to deep sleep. Evidence for entrainment is mixed; the calming routine of listening tends to matter most.
The traditional view
A staple of sleep and nap tracks.
1 Hz beat
A very slow beat for the deepest part of sleep.
An even hiss that covers distractions.
A softer, balanced noise often used for sleep.
A deep, low rumble many find good for focus.