Written by Bernard D. Beitman M.D. and Ruslana Remennikova, MS.

Since the beginning of human civilization, history has shown a correlation between sound and cognitive, mental, and physical wellness.1 In most experiences, sound is part of a larger context. In terms of physics, a sound is composed of a waveform called frequency expressed in Hertz (Hz), a standard international measurement. Although frequency is used as a measurement in electromagnetic radiation, computing, and other electrical technologies, for sound, one Hz is equal to one completed cycle per second or the number of times a sound wave repeats itself in one second. Frequency is the overlap of vibration and synchronization in the fields of neuroscience, biochemistry, physics, and sonics.

When an object is in motion, its oscillating movement is a vibration. Frequency is the measure of how many times per second that motion repeats. For instance, when a harp string is plucked (e.g. the A above middle C musical note), its vibrating movement emits a frequency of 440 Hz. The musical note vibrates at a frequency of 440 Hertz or 440 regular back and forths per second.

Frequency elicits an immediate response in humans — 30 milliseconds faster than visuals2 — and sets the tone for the emotional state of an experience. The conducive behavior of frequency is evident in the language of brain waves. There are five widely recognized brain wave states characterized by their frequency bands: Gamma (>35Hz; concentration), beta (12-35 Hz; busy, active mind), alpha (8-12 Hz; reflective, restful), theta (4-8 Hz; deeply relaxed, dreamy), delta (0.5-4 Hz; unconscious).

A 900-adult study performed by Sentient Decision and Made Music studio found that the subconscious emotional appeal of a sound is 86% correlated with our conscious desire to engage with an........

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