Modern sampling: A tutorial

Abstract

High-resolution audio has started to use modern sampling principles to further enhance the quality of digital audio reproduction. This tutorial seeks to explain how these new methods are an improvement over traditional Shannon sampling. The tutorial first reviews the relevant parts of traditional sampling and then goes on to introduce the modern method based on splines, which are one of many possible approaches. It shows that it is possible to provide better signal reconstruction with practical filters compared to traditional sampling. Where possible a non-mathematical approach is used.