Audio EQ Software Implementation (STM32) - Phil's Lab #89

Peaking filter theory and real-time implementation on an STM32 microcontroller. Useful for audio equalizers (EQ) and situations where frequency response adjustments are required. PCBs by PCBWay https://www.pcbway.com

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[GIT]
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[TIMESTAMPS]
00:00 Introduction

01:19 Hardware Overview + Tag-Connect
03:15 Altium Designer Free Trial
03:37 PCBWay

04:01 Peaking Equaliser Filter Basics
06:59 Transfer Function (Analogue Prototype)
09:12 Matlab Demo (Varying Parameters)
10:56 Discretisation (Analogue to Digital)
13:23 Filter Difference Equation
14:24 Filter Coefficients
15:19 Pre-Warping

16:41 Implementation Tips
18:03 Software Implementation (STM32)
25:08 Test Set-Up
26:17 Frequency Response Tests (Varying Parameters)
28:56 Audio Demo

29:13 Outro