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Building Signals with Blocks: Basis Expansions

September 10, 2019 by

The notion of building complex signals using elementary signals – metaphorical “blocks” – is central to many signal processing tools, such as Fourier transforms, wavelet transforms, and principle component analysis. The details of these different tools vary and can appear complex. This lesson presents a unified, big picture view of this topic that will help you maintain the proper perspective when you later study the details of specific methods.

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