“+ adjective
Etymology: sub- + audible
1. : having a frequency or intensity below the limit of hearing
2. : scarcely perceptible to the ear
a subaudible conversation
a subaudible humming sound
“+ adjective
Etymology: sub- + audible
1. : having a frequency or intensity below the limit of hearing
2. : scarcely perceptible to the ear
a subaudible conversation
a subaudible humming sound
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012