Basic DSP experiments
There are many internet resources that cover digital signal processing (DSP) and software defined radio (SDR), but I’ve only found a few that provide a good introduction along with practical examples. Software Defined Radio for the Radio Amateur by AC2CZ (G0KLA) is an excellent set of SDR tutorials which I found particularly useful. The sample code is written in Java, but it was fairly straightforward to rewrite the parts that I wanted in C++ using Qt.