Binaural beats work by playing slightly different frequencies in each ear. You must use stereo headphones for the effect to work.
Speakers will not produce the binaural effect. Over-ear headphones provide the best experience.
Safety notice: Individuals with epilepsy or seizure disorders should consult a doctor before use.
Binaural beats are an auditory phenomenon discovered by Heinrich Wilhelm Dove in 1839. When two pure tones of slightly different frequencies are presented separately to each ear through stereo headphones, the brain perceives a third tone — a rhythmic pulsation at the frequency difference between the two tones. This perceived beat does not exist in the physical sound; it is generated entirely by neural processing in the brainstem.
The principle behind binaural beats is brainwave entrainment, also called frequency following response. Your brain naturally produces electrical patterns (brainwaves) at various frequencies depending on your state of consciousness. When exposed to a binaural beat at a specific frequency, your brain tends to synchronize its own electrical activity to match that frequency. This is why different beat frequencies are associated with different mental states.
Delta waves (0.5–4 Hz) are the slowest brainwaves, associated with deep dreamless sleep and physical healing. Our Delta preset uses a 2 Hz beat with a 200 Hz carrier frequency. These are ideal for sleep sessions and deep rest.
Theta waves (4–8 Hz) occur during light sleep, meditation, and creative visualization. The 6 Hz Theta preset promotes a deeply relaxed, meditative state. Many practitioners use theta beats for mindfulness, hypnosis, and accessing subconscious thoughts.
Alpha waves (8–13 Hz) represent a relaxed but alert state. Our 10 Hz Alpha preset is excellent for stress reduction, light meditation, and creative flow. Alpha is often called the “bridge” between conscious and subconscious mind.
Beta waves (13–30 Hz) are associated with active concentration, logical thinking, and problem-solving. The 18 Hz Beta preset is designed for study sessions, focused work, and productivity. This is the most popular preset for daytime use.
Gamma waves (30–100 Hz) are the fastest brainwaves, linked to peak cognitive performance, heightened perception, and information processing. Our 40 Hz Gamma preset targets this state for demanding mental tasks.
Pure tones can become fatiguing over long sessions. This generator includes five ambient sound options — white noise, pink noise, brown noise, rain, and ocean — all generated in real time using Web Audio API algorithms. Pink noise (-3 dB per octave rolloff) and brown noise (deeper, richer low frequencies) are particularly effective for masking environmental distractions. The rain and ocean options add natural-sounding modulation patterns that many users find soothing for meditation and sleep.
Start with the Alpha preset at moderate volume for 15–20 minutes. Find a comfortable seated or reclined position, close your eyes, and breathe naturally. Consistency matters more than duration — a daily 15-minute session is more effective than an occasional hour-long one. Use the session history to track your streak and build a regular practice.