Definition: In mathematics, a convolution is a mathematical operation that takes two or more functions and produces another function. It is often used in signal processing to combine signals into a new signal. The process of convolution involves finding the integral of each input function over all possible output values. For example, if we have three functions f1(x), f2(x) and f3(x) that sum up to form a single function g(x), then the convolution of these functions is defined as: g(x) =