A programmable audio generator intended as an aural aid to meditation, implementing the binauralbeat principle as described in Gerald Oster's Oct. 1973 Scientific American article "Auditory Beats in the Brain."
Entrainer is a Java program (JRE 1.8.0_40+ required, available from http://java.sun.com/javase/downloads/index.jsp) which creates binauralbeat frequencies with sound, light and animations for the purpose of entraining one's brain waves.