Informal, intuition notes on signal processing in the discrete case

• Jargon
• Notation

Prelims

Unavoidable things we need to talk about DSP

(Time-domain) Signals

Difference Equations

Digression: Audio signals

Systems

Basics

Sampling

Quantization

Waves

Convolution & IR

Frequency Domain

A useful change of basis that gives us global features of a sequence as a sum of harmonic sinusoids + a constant function

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Setup/Motivation

Analysis Frequencies

The phase problem

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