What BinauralMix is
BinauralMix is a browser-based focus audio layer. You run it in one tab while your audiobook, podcast, lecture, or music plays in another app — it never touches your content. It generates a clean mix of binaural beats and procedural noise underneath whatever you're already listening to.
No file uploads. No installs. No servers processing your audio. Everything runs client-side in your browser using the Web Audio API.
How it works
The audio engine generates two sine wave oscillators at slightly different frequencies — one for your left ear, one for your right. The difference between them (for example, 200 Hz in the left ear and 216 Hz in the right) creates a perceived "beat" of 16 Hz. Your brain synchronizes to this beat frequency, a process called entrainment.
On top of the binaural carrier, BinauralMix generates procedural noise — white, pink, or brown — to mask distracting ambient sounds and fill the acoustic environment. All synthesis happens in real time in your browser. Nothing is pre-recorded or streamed.
The signal chain: two oscillators → stereo merger → tone gain → master gain → dynamics compressor → your speakers or headphones. Stereo headphones are required — the binaural effect only works when each ear receives a different frequency.
The science — honestly
The research on binaural beats is real but modest. A 2019 meta-analysis by Garcia-Argibay et al. found a medium, statistically significant effect on anxiety reduction and cognitive performance across 22 studies. Individual results vary considerably, and the mechanisms aren't fully understood.
What is well-established is the value of the noise component: pink and brown noise reduce distracting ambient sounds and improve sustained attention in numerous peer-reviewed studies. You may find the tool useful even if you're skeptical of binaural entrainment specifically.
We don't make medical claims. BinauralMix is a productivity tool, not a medical device. Read the blog for deeper dives into the research.
Privacy
Your audio never reaches our servers — it can't, because no audio processing happens server-side. We store your saved mixes (if you create an account) and use consent-gated analytics to understand how the tool is used. See our Privacy Policy for the full picture.
Questions or issues? Email hello@binauralmix.com.