Cosmic Cycles
Frequencies derived from astronomical cycles — Earth rotation, lunar orbit, solar cycles, and Schumann resonance.
Need the Earth, Moon, planet, and Sun tuning tables with concert pitch, cent deviation, tempo, pendulum, and octave color?Open the tuning data reference.
The approximately 11-year solar cycle governs sunspot activity, solar flares, and geomagnetic storms. The full magnetic cycle is ~22 years (Hale cycle).
The fundamental Schumann resonance at ~7.83 Hz is an electromagnetic standing wave in the cavity between Earth's surface and ionosphere, excited by lightning discharges. Falls in the alpha-theta brainwave border.
Second mode of Schumann resonance. Falls in the beta brainwave range.
Third mode of Schumann resonance.
Fourth mode of Schumann resonance.
Fifth mode of Schumann resonance.
Cousto presents the Sun tone as a limit-value construction rather than the Sun’s equatorial rotation period. The audible 126.22 Hz tone is the 8th sub-octave of a 32,312.52 Hz solar reference tone.
The frequency of the Earth year (365.25 days) octave-shifted 32 times into the audible range. Known as the OM frequency in Vedic tradition. Corresponds to C# in the cosmic octave system.
The frequency of the Platonic Year — the ~25,920-year cycle of the precession of the equinoxes — octave-shifted into audible range. Cousto associates this with "the principle of joy corresponding to the spiritual level" and the color violet. The Age of Aquarius is one "month" of this great cycle.
The Moon rises about 50 minutes later each day than the day before. This culmination period captures that daily shift and yields an F#-aligned cosmic octave tone.
The frequency of the synodic Earth day (24 hours) octave-shifted 24 times into the audible range. This noon-to-noon day is distinct from the sidereal day used in astronomy.
The sidereal Earth day is the planet’s rotation measured against the fixed stars rather than the Sun. It is slightly shorter than the synodic day and yields a slightly higher audible tone.
The synodic lunar month (29.53 days) octave-shifted into audible range. Used in sound healing for emotional and fluid body work. The Moon governs tides and biological rhythms.
Sidereal lunar month — the Moon's orbit relative to the stars (27.32 days). Slightly different from the synodic month.
The Metonic cycle realigns solar and lunar phases after 235 synodic months, or roughly 19 years. It is a key long-cycle lunar reference.
The Moon’s orbit is inclined to the ecliptic, and the lunar nodes circulate through that plane over thousands of days. Cousto’s octave mapping places that cycle near A#.
The Saros period tracks repeating eclipse geometry through 223 synodic lunar months. In the audible range, this cycle maps to a B tone.
The apsidal cycle tracks the Moon’s nearest and furthest orbital points relative to the Earth. It produces a nearby B tone distinct from the Saros period.
Electromagnetic atmospheric impulses (spherics) measured by Hans Baumer at Pfaffenhofen/Ilm. The spectral maxima occur at frequencies that are exact octave tones of Earth's rotation. The fundamental spheric at 4150.84 Hz corresponds to the note C (129.71 Hz when octave-shifted down 5 octaves), matching Earth rotation's diatonic tone within 0.73 parts per thousand.
Fritz Popp determined that the maximum resonance of DNA lies at a wavelength of 351 nanometers (854 THz), which corresponds precisely to the 66th octave of the Earth's sidereal rotation. As Cousto writes: "DNA and RNA chains are in a state of harmonious resonance to the octave tones of the earth's rotation." Life itself is tuned to cosmic rhythm.