バイノーラルビート生成器 (α波・β波・γ波 集中＆リラックス)

Binaural beats occur when two pure sine waves of slightly different frequencies (e.g. 200Hz and 210Hz) are played independently into each ear via headphones. The brain perceives a third rhythmic pulsing beat equal to the frequency difference (10Hz).

Binaural beats rely on strict channel isolation (left ear receiving frequency A, right ear receiving frequency B). Monophonic sound or room speakers mix the soundwaves in open air, destroying the auditory illusion.

Delta (0.5Hz–4Hz, deep sleep), Theta (4Hz–8Hz, meditation/REM), Alpha (8Hz–14Hz, relaxed focus), Beta (14Hz–30Hz, active alertness), and Gamma (30Hz–50Hz, peak concentration).

Carrier frequencies between 200Hz and 500Hz yield the strongest perceptual brainstem response in human auditory processing centers.

Binaural beats are created inside the brain's superior olivary complex via stereo headphones. Monaural beats are created electronically before audio reaches the ears and can be heard over open speakers.

Alpha (10Hz) and Beta (18Hz) binaural beats encourage entrainment of neural oscillations, promoting sustained attention and cognitive performance.

Web Audio API synthesizes mathematically pure, uncompressed 64-bit floating-point sine waves in real time, eliminating MP3 compression phase distortion and audio looping seams.

Yes, binaural beats are non-invasive acoustic illusions completely safe at comfortable volume levels. Avoid listening at high volumes to protect hearing health.

Most auditory entrainment studies recommend listening for 15 to 30 minutes to allow your brainwaves to synchronize with the beat frequency.

Yes. Adding pink or brown noise masks ambient room distractions while maintaining pure binaural frequency entrainment.