From time to time during my lecturing in geophysics, I have to explain the logical understanding and application of seismic exploration. Occasionally, I come across seismic processing methods which I cannot simply explain, apart from having to refer students to appropriate mathematical literature. On one recent occasion, I had the opportunity to explain the basic mathematical process of convolution. I simply explained that by convolving two waves together as discrete time series, we could produce their convolved response. The mathematical treatment is very simple and found in many books.