Quick disclaimer: due to its original purpose, the applcation and its documentation were created in polish language. I do not intend to translate either in full or in any part and only provide this readme as a quick reference for those interested.

Qt5 application for visualising basic digital filters. Created as a course project at Warsaw University of Technology.

1. Open a signal file by drag-n-dropping it into the main area or going through Plik > Otwórz
2. Apply one of the available filter types:

• dolnoprzepustowy (low-pass),
• górnoprzepustowy (high-pass),
• środkowoprzepustowy (band-pass),
• środkowozaporowy (band-stop).

3. Preview results and save filtered signal with Plik > Zapisz or Plik > Zapisz jako... (under new name).

Signal files used by the program are standard text files with a .signal extension. Example file might look like this:

128 4
0
0
0
0

First two numbers represent sampling frequency in hertz and the total number of samples [N]. Next N rows contains subsequent sample values.

It's trivial to see that the above example shows just a constant signal. For more interesting examples, see files located at docs/examples - you can use them as test input to the application.

The simplest way to get the application app and running is to install Qt Creator. You'll also need QtCharts module and C++11 compiler, so make sure you have both.

From there, all you have to do is compile and run the application from within the IDE. Notice there are two build targets available: Program graficzny, which is a standard GUI version of the application and Program konsolowy, which is a simplified CLI version.

MIT