Again, I’ll be answering some questions I’ve received in my inbox, just like in the previous post of this series.

I want to know how to declare a const variable in one file and access it from other files? (C++) by Ricardo Orozco (Venezuela).
It’s a fairly basic question, and reveals that you have to study more [...]

Digital Signal Processing (DSP) comprises the techniques and algorithms for transforming, filtering and representing digital signals (DSP is a subfield of the more general Signal Processing topic).
Continuous and Digital Signal Processing
A signal is a measurement of a process, an observation of the behavior of some system. Numerically, a signal is a time-varying or spatial-varying quantity [...]