the points at which sound energy is concentrated in the speech spectrum predict the chromatic scale -- the scale represented by the keys on a piano keyboard.

Not having read the article yet I may be totally out of line, but I might think that postdict would be a better choice of words than predict.

The notes of the chromatic scale grow out of the harmonic sequence dictated by nature.


I've now read the article and I stand by what I've said. The speech patterns that they are claiming provide the patterns for the appreciation of musical intervals are being produced by people who find the musical intervals pleasing. This is pre hoc ergo propter hoc, pure and simple.