Finite Impulse Response Filter FAQ

Finite Impulse Response (FIR) filters are one of the most important topics in Digital Signal Processing. Here, dspGuru answers "Frequently Asked Questions" on FIR filtering.

Part 1: FIR Basics

FIR filter basics, including a comparison of FIRs and IIRs, and definitions of basic FIR terms.

Part 2: FIR Properties

The properties of FIR filters, including the important subject of linear-phase.

Part 3: FIR Design

How to design FIR filters.

Part 4: FIR Implementation

How to implement FIR filters.

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Many thanks to Jim Thomas and Rick Lyons for their help.