Home▸Acoustics▸Binaural Beats Wave Interference Lab

🎧 Binaural Beats Explained

Interactive 3D sound-wave visualization where setting slightly different frequencies in each ear lets users hear and see the brain perceive a simulated beating frequency equal to the difference between them.

Acoustics2DModerate60 FPS

Two pure tones, one per ear, ribbon across the scene as scrolling sine waves; where they overlap, a pulsing marker traces the beat envelope your brainstem perceives as a rhythmic throb equal to the difference between the two frequencies.

🔬 What It Demonstrates

The perceived beat frequency equals |f_right − f_left|. The simulation shows both carrier waves plus their interference sum, and pulses the ear markers and lighting in sync with that difference frequency.

🎮 How to Use

Set the left ear's carrier frequency and the beat (right-minus-left) frequency, or jump to a brainwave-band preset. Press Play tones to actually hear the effect through stereo headphones while watching it pulse in 3D.

💡 Did You Know?

Binaural beats were first documented by physicist Heinrich Wilhelm Dove in 1839. The beat itself is a genuine neural phenomenon, but it only exists inside the listener's head — there is no physical 10Hz sound wave in the room.

⚙ Under the hood

Interactive 3D dual-speaker scene where setting slightly different left and right ear frequencies shows how the brain perceives a beating tone from their interference.

binaural-beatswave-interferenceauditory-perceptionfrequency-differencepsychoacousticsacoustics

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install