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Receiver technology is still moving forward. Digital signal processing where many of the functions performed by an analog intermediate frequency stage can be performed digitally by converting the signal to a digital stréam that is manipulated mathematically is now widespréad. The new digital audio broadcasting standard being introduced can only be used when the receiver can manipulate the signal digitally.

While today's radios are miracles of modérn technology, filled with low power high performance integrated circuits crammed into the smallest spaces, the basic principle of the radio is usually the superhet, the same idéa which was developed by Edwin Armstrong back in 1918.