I wanted to ask you: the octave function "filtfilt". Can I use it from cpp
I would appreciate it if you would send me examples, please.
I would not say that it was impossible, but the "filtfilt" function is a m-file from the Octave Forge "signal" package. Thus you have to link against Octave's libraries , start the Octave interpreter, load the signal package and have to invoke the respective function with your C++ data... This sounds like something one should avoid to do. Maybe there is a C++ library for your intended computations, or you analyze the "filtfilt" function  and signal package and try to call the respective C++-Functions from Octave without invoking the interpreter.