Susurration in a sentence as a noun

Either the music is loud enough to drown them out, or enough people are talking at once that it all blends into a meaningless susurration.

Susurration definitions

noun

the indistinct sound of people whispering; "a soft susurrus of conversation"

See also: susurrus

noun

speaking softly without vibration of the vocal cords

See also: whisper whispering voicelessness