Lesson 1 Introduction to digital signal processing
discretization of time:
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samples replace idealized models
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simple math replaces calculus
discretization of values:
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general-purpose storage
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general-purpose processing(CPU)
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noise can be controlled
Lesson 2 Discrete-time signals
Basic Signals
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Elementary Operators
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Shift(mind the difference between shiftings on Periodic Signals and Finite-Support Signals)
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Scaling
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Sum
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Product
Energy and Power
Classes of Discrete-Time Signals
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Finite-Length Signals
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Periodic Signals
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Finite-Support Signals
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