 So, in this video we are going to see the what is convolution. So, convolution is a mathematical way of combining two signals to form a third signal. It is the single most important technique in digital signal processing using the strategy of impulse decomposition systems are described by a signal called impulse response. So, as you see we take two signal g of x and f of x that convolved and form a third signal. We are varying g of x with respect to time. As you can see there is a blue signal that the output of the convolution.