What are binaural beats?
A binaural beat is an auditory illusion created by your brain when you listen to two slightly different frequencies, one in each ear. For example, if your left ear hears 200 Hz and your right ear hears 210 Hz, your brain perceives a "phantom" beat pulsing at 10 Hz. This process is used to gently guide your brain into a desired state (like focus or relaxation).
Why are headphones required?
Headphones are essential because the effect depends on isolating the two different frequencies to each ear. If you use speakers, the sounds mix in the air before reaching you, and the illusion is lost. Any stereo headphones or earbuds will work.
Are binaural beats safe?
For the vast majority of people, yes. The primary risk is hearing damage from high volume, so always listen at a low, comfortable level. People with seizure disorders (like epilepsy), psychological disorders, or who have a pacemaker should consult a doctor before use. Never listen while driving or operating machinery. Read our full safety guide here.
Which frequency should I use?
It depends on your goal. Here's a quick cheat sheet:
- For Deep Sleep: Use Delta (1-4 Hz).
- For Meditation or Creativity: Use Theta (4-8 Hz).
- For Relaxed Focus ("Flow State"): Use Alpha (8-13 Hz).
- For Active Concentration: Use Beta (14-30 Hz).
- For Intense Problem-Solving: Use Gamma (30-100 Hz).
What's the difference between White, Pink, and Brown Noise?
They are "colors" of noise that describe their sound profile. White Noise is hissy and best for masking sharp sounds. Pink Noise is more balanced, like rain, and great for focus. Brown Noise is a deep rumble, like a waterfall, and is excellent for sleep. Learn more here.
What's the difference between "Beat" and "Carrier" frequency?
The Beat Frequency is the target brainwave state (e.g., 10 Hz). This is the "effect" you're trying to achieve. The Carrier Frequency is the actual pitch you hear (e.g., 432 Hz). You can change the carrier to any pitch you find pleasant, and the beat frequency will still work. Read our guide on choosing a carrier frequency.