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Convention Paper

A Simulated Comparison of Dithered and Chaotic Sigma-Delta Modulators

Authors: Dunn, Chris; Sandler, Mark

AES Convention 97 · Paper 3926 · November 1994

Abstract

Recent work has shown that high-order single-bit sigma-delta modulators suffer from low-level artifacts, such as idle tones and noise modulation. Techniques that have been proposed to reduce or eliminate these errors include the application of dither inside the one-bit quantizer loop, and selecting a loop filter which makes the modulator chaotic. This paper compares the efficacy of these two approaches by simulating high-resolution sigma-delta modulators suitable for audio-conversion : applications.

Details

Published in
AES Convention 97
AES Convention
97
Paper number
3926
Publication date
November 6, 1994
Session subject
DSP—Analog to Digital, Digital to Analog
Affiliation
King's College, London, UK (See document for exact affiliation information.)
Type
Convention Paper