Stereo generator

Binaural Beats

Pure tones or true binaural noise — every frequency component is offset between ears by the beat. Rotate L / R to trade sides. Use headphones. Playback keeps going if you switch apps; pause from the lock screen if you need to stop.

Low 200 · High 21010.0 Hz · Alpha
Shared difference for every base pair
Alpha10.0 Hz
0.5 Hz40 Hz
Swap which ear hears the lower vs higher frequency — continuously, not a hard flip
Low → L 100%Low → R 0%

Low 200 Hz · High 210 Hz

Each base is a stereo pair. Invert swaps which ear gets the lower tone. Up to 5.
  • Base 1200 HzL 200 · R 210
    50 Hz500 Hz
ModeTone
Beat10.0Hz
Pair200/210

Presets

How it works

Tones — pure sines, left at base and right at base + beat. Noise — the same noise is played in both ears, but the right channel is frequency-shifted by the beat so every component forms a binaural pair. Focus pulls energy toward your base centers; beat lock adds a quiet sine underlay so the pulse is easier to hear. Rotate L / R continuously orbits the two frequencies between ears. Invert on a base swaps that pair’s ears even when orbit is off. Brown is deepest, pink balanced, white brightest. Headphones required. Not medical advice.