![]() ![]() ![]() I am not going deeply into mathematical derivation of each aspect of theory here since we have one goal design a digital filter.įor the simplicity sake we can assume we capture audio signal (normally it can be a signal from process but here we consider audio signal). my_prog//folder tree ├── my_prog ├── my_prog.cpp ├── matplotlibcpp.hīefore we design filer we need to understand main principles of signal processing, which is the domain of our application and case we are going to solve. Each program you compile as follows, //compile g++ my_prog.cpp -o my_prog -I/usr/include/python3.8 -lpython3.8// //run. ![]() ![]() The header file (for plotting library) has to be in the same folder as you cpp. This library will be used for plotting purposes only. For plotting purposes (in C++) I will use also discussed in my previous posts a matlablib library for C++. Software deployment and final verification of the filters design will be performed in C++. The design will be performed in Python using mainly powerful control package( Python package that sufficiently implements standard functions for analysis and design of control systems - similar to Matlab). We will see how to design the pass filter ( low pass filter) and more advanced, a notch filter. The goal for the filter is to remove particular frequencies (noise) from signal. In following article I will demonstrate a general approach of digital filters design. ![]()
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