noise

6 definitions • 10 examples

a sound or sounds, especially when it is unwanted, unpleasant, or loud:

The noise out in the street was deafening.

I heard a loud noise and ran to the window.

traffic/background noise

dangerously high noise levels

any bad change in a signal, especially in a signal produced by an electronic device:

Using a single chip reduces (the) noise on the output signal by 90 percent.

unexplained or unexpected information in a sample that is not useful and that can be ignored:

There will be a certain amount of statistical noise in the numbers.

(a) sound, esp. when it is unwanted, unpleasant, or loud:

[ U ] I heard background noise on the phone line.

[ C ] If the washing machine gets out of balance, it makes a horrible noise.

unnecessary information or activity:

The CEO was accused of making unnecessary noise to distract the board from the main issue.

a change in a signal, especially one produced by electronic equipment:

Using a single chip reduces the noise on the output signal by 90%.