Question: Why did God create sound?

Sri Chinmoy: God created sound in order to know outwardly what He is inwardly. Inwardly He knows what He is, but if He does not outwardly manifest His inner Divinity then the world cannot accept Him, cannot realise Him. So He created sound just for the sake of manifestation, His own manifestation.

From:Sri Chinmoy,The height of silence and the might of sound, Agni Press, 1974
Sourced from https://srichinmoylibrary.com/hs