- Start at a low volume. Prolonged loud audio can cause hearing damage.
- Stop immediately if you feel discomfort, dizziness, nausea, or headache.
- Not medical advice; not intended to diagnose, treat, or cure any condition.
- If you have epilepsy, seizures, or neurological sensitivity, avoid use or consult a clinician first.
- Use caution while driving, working, or in any situation requiring sustained attention.
Binaural Beat Designer
Set carrier and beat frequencies for deep focus, meditation, or sleep 🎧 Headphones required
Brainwave band target (based on current beat Hz)
Controls
All parameter changes are smoothed to prevent clicks. Audio starts only after you press Start.
How Binaural Beats Work
When your left ear hears a tone at 210 Hz and your right ear hears 220 Hz, your brain perceives a third "phantom" beat at 10 Hz, the difference between the two signals. This perceptual phenomenon, called the auditory brainstem response, is why binaural beats require headphones: a speaker plays both tones to both ears simultaneously, and the stereo separation collapses. With headphones on and the signals split correctly, the effect is entirely generated inside your auditory cortex.
The Carrier Frequency
The carrier is the base pitch of the tone each ear hears (roughly 100–400 Hz is most pleasant for extended listening). It does not directly affect the beat frequency; it only determines the tonal character of what you hear. Lower carriers feel warmer and more immersive; higher ones feel brighter and more alert.
The Beat Frequency
This is the value that targets a specific brainwave band. A 4 Hz beat sits in Theta (drowsy, meditative), 10 Hz in Alpha (calm, relaxed focus), 16 Hz in Beta (active cognition). The effect is subtle and requires sustained listening; it is not a switch that flips a mental state but a gentle nudge that may support one.
Pink Noise as a Carrier
The optional pink noise layer is not a binaural signal; it plays equally to both ears. Its purpose is masking: a low level of pink noise can smooth out the pure sine-tone character, making extended sessions feel less fatiguing. Keep the level well below the tone volume or the masking effect works against you.
Brainwave Band Reference
| Band | Beat Frequency | Associated State | Typical Use |
|---|---|---|---|
| Delta | 0.5–4 Hz | Deep, dreamless sleep; physical recovery | Sleep onset, restorative rest |
| Theta | 4–8 Hz | Light sleep, deep meditation, creative ideation | Meditation, creative work, light relaxation |
| Alpha | 8–13 Hz | Relaxed but alert; calm focus; reduced anxiety | Stress relief, light reading, relaxed productivity |
| Beta | 13–30 Hz | Active, engaged cognition; problem-solving; alertness | Deep work, studying, analytical tasks |
| Gamma | 30–40 Hz | High-level information binding; heightened perception | Peak cognitive effort, advanced meditation |