Pitch – particular frequency 432Hz/440Hz
Subjective:
Tone – Acoustic – regularity of vibration
Standard 12-tone scale
Frequency – of musical notes (rate of oscillatory & vibratory phenomena)
Objective:
frequency is a number of occurrences, of a repeated event, per unit of time
Hertz is a International Standard (SI) unit for frequency
Verdi's A
Others believe that the correct middle “A” is 432 Hz (also known as Verdi’s A) because it has “a pure tone of math fundamental to nature” and is “mathematically consistent with the patterns of the universe, vibrating with Phi, the Golden Ratio.
Furthermore, 432 Hz resonates with 8 Hz (the Schumann Resonance), the documented fundamental electromagnetic “beat” of Earth.
The great 440 Hz conspiracy, and why all of our music is wrong: Alan Cross
Grounding
dr william amalu grounding
vagal tone – Vagal tone refers to activity of the vagus nerve, the 10th cranial nerve and a fundamental component of the parasympathetic branch of the autonomic nervous system. This branch of the nervous system is not under conscious control and is largely responsible for the regulation of several body compartments at rest.
electrical ground improves vagal tone
Electrical Grounding Improves Vagal Tone in Preterm Infants
