subaudible

Throughout the building, one could discern the subaudible pulse of compressors, water chillers, laser-deposition chambers, gas chromatographs, fume-exhaust systems, recirculated-air pumps, and all manner of other specialized electrical apparatus.

CSI: Crime Scene Investigation: Skin Deep Jerome Preisler 2010

The only sound was the almost subaudible hiss of the Vineyard breeze sifting through the trees.

Third Strike Philip R. Craig 2007

She drifted into the subaudible mumble that was her medium for describing and critiquing—mostly to herself—an irrational and probably insane world.

Again to Carthage Jr. John L. Parker 2007

The only sound was the almost subaudible hiss of the Vineyard breeze sifting through the trees.

Third Strike Philip R. Craig 2007

The other is a deep, nearly subaudible drone with an occasional beat like the pulse of a sloth deep in hibernation.

Disquiet » Field Music MP3 2004

But as I was saying, I remember sitting there, playing with his cards and his pennies, Grammy chastising him in the background, so incessant it was subaudible to us as we laughed and ignored her screams of complaint and abuse.

Pop Pop barbylon 2001

But as I was saying, I remember sitting there, playing with his cards and his pennies, Grammy chastising him in the background, so incessant it was subaudible to us as we laughed and ignored her screams of complaint and abuse.

Pop Pop barbylon 2001

They meet with a subaudible thud that shakes the asteroid.

Passage at Arms Cook, Glen 1985

"Yes?" answered Alexa, with a point of interrogation subaudible, and held her book so that be might feel it on the point of being lifted again to eager eyes.

The Elect Lady George MacDonald 1864

But for many of us, here’s the subaudible “buzz” of our inner lives:

HOW EVIL WORKS DAVID KUPELIAN 2010