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Signal processing is one of the subfields of electrical engineering that analyzes, modifies, and operates information from all sources of data in the universe. A signal in signal processing is an electrical or electromagnetic current that relocates data from one device to another. Everything in the cosmos, such as sounds, images, and videos, can be described as a signal in the form of a wave. Signals can be represented as functions of one or more independent variables mathematically.
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- Signal Processing
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- Chapter 9