Delta wave 1hz pulsing is associated with relaxation, tranquility, meditation and deep sleep. A smooth noise component is mixed with the binaural tone frequencies of 60Hz in the left speaker and 61Hz in the right speaker. This creates the once a second pulsing or beats. Headphones are recommended for an immersive listening experience.
This audio with video is viewable on YouTube : https://youtu.be/w87slRUkvm0