Two slightly different tones played separately to each ear, a technique used to encourage brainwave entrainment.
A binaural beat is created by playing two slightly different frequencies separately into each ear, which the brain perceives as a single pulsing tone at the difference between them.
This layer is engineered so that difference lines up with the theta frequency range, a common approach in brainwave entrainment audio.
Research on binaural beats has examined their relationship to relaxation and shifts in reported mood, though effects and study quality vary across the literature.
This describes general research on this sound-design technique, not a clinical trial of the finished Theta Clear program itself. See the full sound layer breakdown or the program overview for more.