Example: FIR filter in C++

The following example shows how to apply an FIR filter to audio data using the KFR framework. #include <kfr/all.hpp> using namespace kfr; int main(int argc, char** argv) { // static array (like std::array) to hold the taps univector<double, 15> taps; // create the window function // the tap count is passed to window_hann // window_hann does not calculate the window immediately // it creates an expression that represents a Hann window expression_handle<double> hann = to_handle(window_hann<double>(taps.