The sound of the ‘Om’ is said to have been found out by Indian Rishis ages ago. Sound has been the root for the shaping of objects and everything around us, including ourselves. The sound of 'Om' is noted to be a C#. (C sharp)

The Sri Yantra was then developed when they found out that the sound of ‘Om’ formed a particular pattern when it was sang out perfectly. This pattern was then taken as a sacred symbol. Note, it is all sacred geometry.