126.22 Hz is calculated from the orbital period of the Earth around the Sun using the principle of the "cosmic octave" — a method developed by Swiss mathematician Hans Cousto, which converts astronomical periods into audible frequencies by repeatedly doubling them until they reach the range of human hearing.

In sound therapy traditions, this frequency is called the "vibration of life." It is associated with the qualities we instinctively connect with sunlight — vitality, warmth, regeneration, and optimism. Practitioners use it to promote a sense of joy and renewed energy, particularly when working with people who feel depleted or stagnant.

The Sun frequency sits in a warm, comfortable range for the human ear — neither too low to feel rumbling nor too high to feel piercing. It makes an excellent meditation tone and is often used in combination with other planetary frequencies to create a harmonic "celestial choir."