A small mathematical process of convolution or correlation took great efforts for
implementation in real-time, in the form of a C or C++ code. The results of convolution
were analysed. The circular convolution gave aliased results as compared to those obtained
in linear convolution. The auto correlation results were proved to give an even
signal. Here, the term at n=0 gives the sum of squares of each term, i.e. the
energy of the signal. For delayed signals also, the autocorrelation results are
the same. The cross correlation of input signal with its delayed version gives
an advanced autocorrelated signal.
