However, digital signals are discrete in both of those respects – generally a finite sequence of integers – therefore a digitization can, in practical terms, only ever be an approximation of the signal it represents.ĭigitization occurs in two parts: Discretization The reading of an analog signal A, and, at regular time intervals ( frequency), sampling the value of the signal at the point. Īnalog signals are continuously variable, both in the number of possible values of the signal at a given time, as well as in the number of points in the signal in a given period of time. These are known as bits (a contraction of binary digits) and the sequences of 0s and 1s that constitute information are called bytes. Digital information exists as one of two digits, either 0 or 1. The term digitization is often used when diverse forms of information, such as text, sound, image or voice, are converted into a single binary code. 8 Digitization versus digital preservation.This is why it is a favored way of preserving information for many organisations around the world. Unlike analog data, which typically suffers some loss of quality each time it is copied or transmitted, digital data can, in theory, be propagated indefinitely with absolutely no degradation. In modern practice, the digitized data is in the form of binary numbers, which facilitate computer processing and other operations, but strictly speaking, digitizing simply means the conversion of analog source material into a numerical format the decimal or any other number system can be used instead.ĭigitization is of crucial importance to data processing, storage and transmission, because it "allows information of all kinds in all formats to be carried with the same efficiency and also intermingled". The result is called digital representation or, more specifically, a digital image, for the object, and digital form, for the signal.
Cite engauge digitizer series#
Digitizing or digitization is the representation of an object, image, sound, document or signal (usually an analog signal) by generating a series of numbers that describe a discrete set of its points or samples.
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