Webopedia on Google+Webopedia on TwitterWebopedia on FacebookTech Bytes Blog
Main » TERM » N »

noise

(1) In communications, interference (static) that destroys the integrity of signals on a line. Noise can come from a variety of sources, including radio waves, nearby electrical wires, lightning, and bad connections. One of the major advantages of fiber optic cables over metal cables is that they are much less susceptible to noise.

(2) In general, anything that prevents a clear signal or message from being transmitted. For example, you might hear someone complain of a lot of noise in a newsgroup, meaning that there are many superfluous messages that don't add anything to the discussion.

(3) In digital images and digital photography the term noise is used to describe the occurrence of color dots or specks where there should be none. For example, in a digital image of a pool of blue water, you may notice white, grey or other colored specks in the image where it should be blue. In scanning technology, image noise is usually referred to as grain or film grain.







TECH RESOURCES FROM OUR PARTNERS
DID YOU KNOW?
11 Tips to Boost Your Wi-Fi Signal

It's not just your lawnmower and household tools that your neighbor won't return. Our top picks include everything from updating device firmware... Read More »

Interesting Times: Transformation in the IT Channel

Business transformation will remain the buzzword of the moment as channel firms continue to assess the direction of their companies in the age of... Read More »

What is a Virtual Private network (VPN)?

Companies and organizations will use a VPN to communicate confidentially over a public network and to send voice, video or data. Read More »

QUICK REFERENCE
29 Free Android Apps for Cash-Strapped Students

From wacky alarm clocks to lecture hall tools and after class entertainment, these Android apps are a good fit for a student's life and budget. Read More »

Network Fundamentals Study Guide

A network is a group of two or more computer systems or devices, linked together to share resources, exchange files and electronic communications.... Read More »

Computer Architecture Study Guide

This Webopedia  study guide describes the different parts of a computer system and their relations. Read More »