Not quite on the second disc but the first disc healing, in the description is information about the use of the Schumann frequency of 7.83 and their harmonics. At the same time is now very widely discussed topic that is now gone, the shift of these frequencies. The part says that the increased in district 14, and the others were dropped.
The frequency of the noise is not something mystical-magical, and the frequency of radio waves, which encircles the entire globe and return to its starting point without attenuation, due to the properties of our normal earth atmosphere.
It's not one frequency, and an infinite number of frequencies (multipliers to the basic frequency). That is the main harmonic of 7.83 Hz. It can be doubled and the wave will retain the same properties will be doubled harmonic 7.83*2 = 15.5 Hz. Triple harmonic of 7.83*3 = 23.5 Hz and so on indefinitely. This does not mean that the second harmonic is better than the first, and the third better than the second, does not mean that the vibrations are rising and all the consequences. It's just a decomposition of the signal in Fourier series, mathematical series, highlighting the frequency which allows the wave to be reflected alternately from the ionosphere and the crust, almost no fading. And multiplication of this frequency by integer factor
During the day the frequency is slightly "float" one or two Hertz, since the Earth turns different sides toward the Sun and thus the ionosphere receives a different dose of solar radiation, which changes its properties.
All the talk about the increase in frequency of the Schumann resonance is just innuendo. Coincidence with frequencies of the brain is also ambiguous. For "enlightenment" is used the theta rhythm of the brain, and it is less than the first harmonic of the Schumann (theta rhythm ranges from 4 to 8 Hz). But the alpha rhythm of the brain (the normal Wake mode person) - it is from 8 to 14 Hz that, in principle, with the frequency of the noise can indeed correlate physiologically. Which is certainly interesting, but the enlightenment will not, since it's the most common and banal rhythm of the brain
View the daily changes of the Schumann resonance here
http://sosrff.tsu.ru/?page_id=9
No change over the decade no
Sorry if not quite in the topic.
PS well and the disc this does naturally not apply and their health. I, to my shame, I listened to them, but there is probably plenty of work techniques based on binaural rhythms, which allow you to enter just the brain into the theta state (waking dreams) or others. Just Schumann, as a constant of our atmo-bio-Geosphere is not growing, and that's all ))<