Vibroacoustic application and brainwave entrainment: where the research stands
Low-frequency vibration, binaural beats and 40 Hz stimulation research — and which of these Rezzonix does or does not do.
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Writings on frequency, sound and vibration: what is known and what is not.
The origin of frequency lists
Where circulating frequency lists came from, how they multiplied, and their scientific status.
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Square waves, harmonics and device limits
Why square waves are used, what harmonics are, and which frequencies your phone can actually produce.
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How to record your own trial
A simple, honest method for the curious: a control group, one variable, consistent records.
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