SUSURRATION
whisper, whispering, susurration, voicelessness
(noun) speaking softly without vibration of the vocal cords
susurration, susurrus
(noun) the indistinct sound of people whispering; “a soft susurrus of conversation”
Source: WordNet® 3.1
Etymology
Noun
susurration (countable and uncountable, plural susurrations)
A low, indistinct continuous whispering sound; a murmur.
• Beyond the Wall by Ambrose Bierce
Source: Wiktionary
Su`sur*ra"tion, n. Etym: [L. susurratio, fr. susurrare to whisper:
cf. F. susurration.]
Definition: A whispering; a soft murmur. "Soft susurrations of the trees."
Howell.
Source: Webster’s Unabridged Dictionary 1913 Edition