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Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

imaginary and real world signals

my professor signals and system talk"we have two signals real signal and imaginary signals.WE CAN PLAY WITH IMAGINARY SIGNALS but cannot with real signals and we can always transform imaginary signals into real signals"

could anyone understand what he trying to say.Why does he say we can play with imaginary signals
 

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