Binaural Beat is a binaural beat generator for relaxation, focus and sleep.

A binaural beat is created by playing two slightly different frequencies, one
in each ear. The brain perceives a third "beat" at the difference between them.
Use headphones for the effect to work.

Features:

Two audio engines:
- Simple: a lightweight built-in tone generator with base and beat frequency
  sliders.
- SBaGen: the classic Sequenced Binaural Beat Generator by Jim Peters, with
  58 bundled preset sequences (brainwave states, focus levels, chakra
  progressions and more).
Independent background layer that mixes under the beats, with its own volume:
- Pink and brown noise, generated on the fly.
- Looping nature samples (river, train).
Clean, modern interface.

This is a 2026 revival of an old project: the original was a native Android
port of SBaGen via OpenSL ES. This version keeps the genuine SBaGen engine but
runs it on a modern stack.

Binaural Beat is free software, released under the GNU GPL v2. It builds on
SBaGen by Jim Peters (GPLv2). Bundled audio samples are freely licensed
(Creative Commons); see the project's CREDITS for full attribution.

Note: binaural beats are not a medical treatment. This app is for relaxation
and personal experimentation only.