de-emphasis
nounUK /diːˈɛmfəsɪs/
Etymology From de- + emphasis.
1
A reduction in emphasis.
2
Communications, Electrical engineering, Engineering, Natural sciences, Physical sciences, Telecommunications A signal distortion, carried out at a receiver, in order to undo the effects of pre-emphasis at the transmitter.
3
Communications, Electrical engineering, Engineering, Natural sciences, Physical sciences, Telecommunications A reduction of the level of all bits except the first one after a transition.