Butterworth Filters
Minimalist low-pass filter library – Martin Bloedorn
discrete signals - Implementing a Butterworth Filter Manually in C/C++ via Second Order Sections - Signal Processing Stack Exchange
Butterworth Filter Design in C++ – The Code Hound
Butterworth filter in c++ - ROOT - ROOT Forum
Implement low pass filter. | Qt Forum
Butterworth filter - ROOT - ROOT Forum
Low pass filter implementation in C++ (Resolved)?? | ResearchGate
A simple digital low-pass filter in C | Kirit Chatterjee
matlab - Implement 2nd order low pass filter in C++, how to compute coefficients? - Stack Overflow
A Low-Pass Filter Guide for Non-DSP Engineer | Yingnan Wang
IIR filter library (C++/JAVA)
python - Several Low pass filters generate offset when applied on an embedded system on C++ - Signal Processing Stack Exchange
Filter design: Resources, tools, C/C++ code – glenzac
A Butterworth Filter in C# - CodeProject
Butterworth filter design - MATLAB butter
