AES E-Library

A New Method of Applying High Levels of Dither to Delta-Sigma Modulators

This paper presents a new a new method of applying high levels of dither to Sigma-Delta Modulators. In particular, it clarifies the position of the overload point in one-bit Sigma-Delta Modulation systems and presents several overload control methods with comparisons of their efficacy. It then goes on to examine the problem of applying dither to one-bit systems and describes a new approach for applying high levels of dither. It also examines the effect of different dither probability density distributions and shows that simple bi-level dither can be effective at lower levels than other probability density distributions. It presents results, which show that dither can be applied at a high enough level to be effective in one-bit Sigma-Delta Modulation systems.

Author: Angus, James A. S.
Affiliation: Acoustics Research Centre, Research Institute for the Built and Human Environment, University of Salford, Salford, Greater Manchester, England
AES Convention:117 (October 2004) Paper Number:6296 Import into BibTeX
Subject:High Resolution Audio

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD 117Papers)   /117/6296.pdf

Start a discussion about this paper!