The turning point in 2,500 years

of research in music, speech and auditory perception.

The Ecological Foundation of Hearing Sciences

by Akpan J Essien, PhD (Sorbonne, Paris III).

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Not just a new book…

The first work in the history of hearing research to discover the invariant correlate of musical pitch in the sound source
It demonstrates, on the platform of invariance, that hearing sciences have been on the wrong course over the past 2,500 years
It is the turning point from mystical arithmetic of music established by Pythagorean string ratio theory in the 6th century B.C.
It lays a foundation for a new generation of workers to address auditory perception scientifically
It shows what it is that we really hear when we experience the sensation of sound
The realities revealed open the way for scientists to assist sufferers of hearing loss
The physiological origin of pitch and tone in speech will, no doubt, meet the needs of linguists and phoneticians working on tone and intonation in the world’s tone and non-tone languages
It redresses pre-historic concepts of tension and force in vibrating bodies, leading to better understanding of the mechanics of frequency control and perception
No experimental finding in this work can be found anywhere in the world except as extracts from this work.
Without this turning point, discussions of theories of music, speech, and hearing are 2,500 years behind time

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As a guarantee of quality and originality, the core experiment that marks the turning point has been published by:

International Commission for Acoustics, 2016

The American Journal of Modern Physics, 2017