Author: Mark Newman
How FIR filters work | Applying the filter
In this post, we discover how to use a filter’s impulse response to filter a signal. Included in the post are snippets of JavaScript code demonstrating how you can write your own FIR filter.
Read MoreHow FIR filters work | Making a practical filter
Filters are practical things. Therefore they need to work in the real world. How can we turn a mathematical equation into something that actually works?
Read MoreHow FIR filters work | Designing the filter
How to use the inverse Fourier Transform to tailor the impulse response of our filter to give us the frequency response we are looking for.
Read MoreHow FIR filters work | Introduction
How do FIR filters work? If you’ve ever calculated a running average, then you have a partial answer to this question. We look how a running average is a sort of convolution, and convolution is how FIR filters work.
Read MoreHow to understand the output of the FFT
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Read MoreThe FFT Algorithm | The Secrets of the FFT | Part 4
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Read MoreThe Twiddle Factor | The Secrets of the FFT | Part 3
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Read MoreThe Butterfly Diagram | The Secrets of the FFT | Part 2
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Read MoreDivide and Conquer | The Secrets of the FFT | Part 1
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Read MoreWhat are Windowing Functions and why do we need them?
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