Just connect your CD player to the external input of a mind machine and play the CD, with your headphones and glasses connected to the light and sound devices you will experience an amazing AudioStrobe experience. Beats are the amplitude variations that occur when pure tones close to each other in pitch are mixed. As the mixed tones get within an octave of each other, they sound good only if the tones form good chords. When they get still closer, the effect shifts to beats. When you listen to a mixture of slowly changing tones on a dual binaural beat instrument, fascinating beat effects are heard.
Binaural beats result when pure tones at slightly different pitches are heard by the two ears.
The effect is different from a mixed tone beat phenomenon, because the tones are heard and processed separately by the auditory apparatus. Tones of slightly different pitches appear to have constantly shifting phase, and the source appears to move back and forth within the head at the rate of the difference of the pitches. You can experiment with this effect with a light and sound machine that generates controlled sine wave binaural beats. Brain waves are the voltage patterns generated by the brain. The brain contains some 100 billion neurons which operate by generating and passing electrical signals.