It does not have a steady frequency that can be multiplied to achieve 432 Hz. Brainwaves or Neural Oscillations range between approximately 1 Hz and 70 Hz and are not tuned to 8 Hz or other divisions of 432 Hz in any way. The Schumann resonance is a set of electromagnetic oscillations that originate from earth.
Herein, what is the frequency of the earth?
Brainwaves 7.83 Hz - Schumann earth resonance. Grounding, meditative - Pure Binaural Beats (The Frequency of the Earth)
How is the Schumann resonance measured?
Schumann resonance is a standing wave of electromagnetic field, which occurs when a space between the surface of the Earth and the ionosphere makes a resonant cavity for electromagnetic waves. It is important to measure Schumann resonance and compare the level inside and outside the mine.