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Convention Paper

Dither Myths and Facts

Authors: Lipshitz, Stanley P.; Vanderkoy, John

AES Convention 117 · Paper 6279 · October 2004

Abstract

Twenty-five years after the discovery of the desirable attributes of nonsubtractive triangular probability density function dither for signal quantization, some misunderstandings, myths, and half-truths still abound regarding what dither does and does not do. The increased use of dithered sigma-delta modulators has recently brought some of these questions to the fore. Some of these errors are relatively easy to explain and correct, while others are considerably more subtle in nature, but nevertheless also need to be addressed. This paper attempts to explain and clarify these matters, with the aid of copious time-domain, frequency-domain, and statistical-domain illustrations. It assumes that the reader already has a good knowledge of the theory of dithered quantization.

Details

Published in
AES Convention 117
AES Convention
117
Paper number
6279
Publication date
October 6, 2004
Session subject
Signal Processing
Affiliation
Audio Research Group, University of Waterloo, Waterloo, Ontario, Canada (See document for exact affiliation information.)
Type
Convention Paper