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Binaural beats: alpha and theta, honestly explained
Binaural beats are an auditory illusion: two slightly different tones, one in each ear, merge in your head into a slow pulse.
Listen: Binaural beats
A one-minute sample. In the app it plays without a break. The sleep timer is part of Hoppel Plus.How it works
If you hear 200 Hz on the left and 206 Hz on the right, your brain perceives a pulsing at the difference – 6 Hz. It only works with headphones, because each ear needs its own tone.
Hoppel has two beats: alpha at 10 Hz (200/210 Hz), linked with relaxed alertness, and theta at 6 Hz (200/206 Hz), linked with drowsiness. Both sit on a calm, warm pad so they don’t sound like lab equipment.
What research says
The results are mixed. A meta-analysis found small effects on anxiety, attention and pain perception, with large differences between studies. Claims that binaural beats “reprogram” your brain aren’t supported. Think of them as a calm sound bed that helps some people and not others.
Tips
Listen quietly with your eyes closed for 10 to 20 minutes. Not while driving or doing anything that needs your full attention.
FAQ
Do I need headphones for binaural beats?
Yes. Without headphones the two tones mix in the air and the effect doesn’t happen.
What’s the difference between alpha and theta?
Alpha (10 Hz) is linked to relaxed alertness, theta (6 Hz) to drowsiness and drifting into sleep.
Are binaural beats dangerous?
No serious risks are known, but some people get headaches or feel uncomfortable. Keep them quiet and stop straight away if that happens. If you have epilepsy or another neurological condition, ask your doctor first.
Sources
- Garcia-Argibay M., Santed M. A., Reales J. M. (2019): Efficacy of binaural auditory beats in cognition, anxiety, and pain perception: a meta-analysis. Psychological Research 83:357–372.
As of 13.10.2026. This rating summarises published reviews and is not a promise of effect. Hoppel is a wellbeing app, not a medical device.
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