Stereo beat synchronization
Hemi Sync
Explore the Hemi Sync technique through two stereo tones, the perceived beat created by their difference, and visual models of phase relationship and hemispheric synchronization. This is an educational audio visualization tool for exploring stereo beat frequency concepts.
Audio Controls
Selected range
Theta
Choose a category and try the presets to hear different stereo beat ranges.
Stereo wave movement visualization showing both channels and their combined pattern.
The wave panel shows both channels and their combined movement. It is a visual guide, not a measurement instrument.
What You're Seeing
The wave view shows two stereo tones and their combined motion. It is a generative visual aid for understanding phase, offset and beat frequency.
The display is not measuring brain activity, hemispheric synchronization or a clinical response.
How Hemi Sync Works
Hemi Sync style listening uses slightly different tones in the left and right channels. The listener perceives the difference between them as a beat frequency.
Headphones are needed for stereo separation. Keep volume conservative and stop if the sound feels uncomfortable.
Beat Ranges
Delta, theta, alpha, beta and gamma labels describe frequency-offset ranges. They are useful listening categories, not guaranteed mental states.
Changing the carrier frequencies changes the tone color while keeping the beat offset comparable.
Educational Disclaimer
This page is an audio visualization and listening tool. It does not make medical, therapeutic or cognitive-performance claims.
Use it as a neutral way to explore stereo beat relationships, waveform movement and careful listening.