FIR Filter Design and Software Implementation - Phil's Lab #17
FIR (Finite Impulse Response) filter theory, design, and software implementation. Real-time software implementation on a custom STM32-based PCB. Overview of digital filtering, use-cases, mathematical theory, convolution, circular buffers, practical considerations, how to design FIR filters, filter design tools, implementation in real-time using C on an embedded system.
Chapters:
- 00:00Preview of FIR Filter Implementation
- 00:34JLCPCB Ordering (Custom STM32 PCB)
- 01:18Introduction and Overview
- 01:57Digital Filter Overview
- 02:40Input Signal Representation (Discrete Time)
- 03:21Filter Frequency Response
- 04:42Output Signal
- 05:11FIR Filter Theory (Impulse Response, Convolution)
- 08:20Window-Sinc FIR Filter Design Procedure
- 11:17Choices When Designing FIR Filters
- 12:19Filter Design Tool
- 14:06Implementation: Convolution and Circular Buffers
- 16:58Header File
- 17:55Filter Init and Update Functions
- 23:03Filtering Accelerometer Data (DMA, Callbacks, USB, etc.)
- 25:13Designing a Practical FIR Filter (Low-Pass)
- 28:37Serial Oscilloscope Tool
- 28:50Real-Time Accelerometer Filtering Example
