Indian Tantric doctrine

«A simple example can be found in the Indian Tantric doctrine of the three tradicional expressions of the deity: the anthropomorphic, or visual, image; the yantra, or geometric “energy” diagram; and the mantra, or sonic representation through chanting and music.»

«It is interesting to note that these are all considered to be equal – simply outward expressions of the same underlying thing. In form, this is not unlike the nature of electronic systems: the same electronic signal can be an image if fed into a video monitor, an energy diagram if fed into an oscilloscope, and a sequence of sounds if fed into an audio system.»