Subwoofer or headphones required.
This is a very deep bass one quarter hertz delta wave designed to help with meditation sessions. Relax to the gentle throbbing created by this noise. Also useful for focus at other times, to aid in study, or to help with going to sleep.
A delta wave is a high amplitude brain wave with a frequency of oscillation between 0–4 hertz. Delta waves, like other brain waves, are recorded with an electroencephalogram (EEG) and are usually associated with the deep stage 3 of NREM sleep, also known as slow-wave sleep (SWS), and aid in characterizing the depth of sleep.