![]() Second, digital signals can be manipulated easily. First, digital signals can be reproduced exactly. There are two very important advantages to digital signals. Hey presto, move on multiple years and the iPod arrived using a digital storage format. It’s this sequence of zeros and ones that’s etched into the spiral track of the CD. When a CD is made in a studio, the music is first converted into an electrical analog signal by a microphone, then the electrical signal is converted into a sequence of zeros and ones by sampling. For example, music was always recorded and transmitted in analog form until the 1980s when the CD player made the digital recording of music common. Historically, engineers have been replacing analog signals with digital signals. Nick Drain, Redline Group R&D and Engineering recruitment consultant discusses digital signal processing jobs in today’s high growth electronics sectors and why DSP engineers will be even more important in the next decade.Įlectrical signals are of two types: analog, where the signals are carried by continuously varying quantities, and digital, where the signals are restricted to a finite set of discrete values (often just two, symbolised by 0 and 1). Electrical signals are everywhere since they’re used in communications, in entertainment devices, in measuring instruments, in imaging devices, and computers. ![]()
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