Indian classical philosophy, it is believed that essentially
every thought or idea originates in Sound (nada). The
moment we think, an unheard sound is formed. As an idea
appears in one's mind, the sound that concurrently occurs
is the ground for all forms.
Sound is classified into four stages : Para,
In an evolutionary sequence, these display the structure
of the continuum of manifestation. Para
the unmanifest stage, is the starting point. When the
elongated in different directions, it becomes Pasyanti.
In other words, Pasyanti
sound is sound emerging towards the visible. After the
stage of Pasyanti,
sound begins to crystallise into form. At this stage,
sound becomes light or Pasyanti
, the luminous
sound. By creating patterns and curves, luminous sound
make the enclosure and definition of space possible,
projecting the original sound in forms accessible to
human experience. The final stage of Vaikhari
infinite opportunities of permutation and combination
arising out of one harmonious primal sound.
Tantric thought, sound without vibrations does exist.
And this unstruck sound or Anahata Dhwani
comes from the original Pranava
sound, which as the aggregate of all existing sounds
gives birth to the cosmic process itself. Through its
immeasurably powerful range and intensity, the Anahata
Dhwani can create, destroy, and reshape
the entire structure of the Universe.