noise reduction

Definitions

Construction

  • The difference, expressed in decibels, between the noise energy in two rooms when a noise is produced in one of the rooms.
  • The difference in noise energy from one side of a partition to another when a noise is produced on one side.

Electronics

  • A system for the reduction of noise in audio recordings. One variation, for instance, involves providing additional gain for certain frequencies during recording, while reducing said gain during playback.
  • synonymnoise elimination
http://www.dictionarycentral.com/definition/noise-reduction.html