unnoised

From un- +‎ noised.

unnoised (not comparable)

1. Not spread or told, as gossip.
   • 1820, Robert Charles Dallas, Sir Francis Darrell; or, the Vortex, volume 2, page 255:

     The silent, the unnoised, unrecorded acts of goodness of Sir Francis Darrell broke suddenly upon us at almost every turn […]

2. Lacking noise or perturbations that distort data values.

   Antonym: noised

   • 1986, Irving R. Abel, Thermal Imaging: 3-4 April 1986, Orlando, Florida, page 94:

     Now the program calculates the coordinates of the point along the unnoised exit beam vector which has the noised range from the sensor; this is the point the sensor's software believes it has detected.

   • 2012, Celso C. Ribeiro, Pierre Hansen, Essays and Surveys in Metaheuristics, page 254:

     The first variant consists in alternating noised phases with unnoised descents. More precisely, in order to stay closer to the original function f, we may apply a given number v of elementary transformations with respect to the noised function f_noised, then a descent with respect to f until a local minimum is reached, then again v noised trials, then a descent with respect to f, and so on.