Sound Refocus uses ultrasound technology and a specific sound sequence to improve focus, promote relaxation, reduce stress, and enhance learning and memory. The capacity to hear first evolved in marine life, and ultrasound is a key way that whales, dolphins, and other mammals communicate and navigate. Sound Refocus bypasses the auditory system, transmitting ultrasound directly to the brain. This promotes deep calm and mental relaxation. The sound sequence is based on the Fibonacci series, which is a mathematical sequence found throughout nature.