In 1839, physicist Heinrich Wilhelm Dove created Binaural Beats.
Dove learnt that when two different frequencies of sound are put into each ear the brain detects phrase variation. This leads the brain to try and reconcile the difference between the frequencies.By using the right phase variation it is possible to lead the brain to produce alpha brainwaves (10 Hz), the waves used in most meditation techniques.So if you’re looking for an alternative way to meditate, binaural beats are a good choice.