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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.
Author (s): Dunn, Chris; Sandler, Mark
Affiliation:
King`s College, London, UK
(See document for exact affiliation information.)
AES Convention: 97
Paper Number:3926
Publication Date:
1994-11-06
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Session subject:
DSP—Analog to Digital, Digital to Analog
Permalink: https://aes2.org/publications/elibrary-page/?id=6306
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Dunn, Chris; Sandler, Mark; 1994; A Simulated Comparison of Dithered and Chaotic Sigma-Delta Modulators [PDF]; King`s College, London, UK; Paper 3926; Available from: https://aes2.org/publications/elibrary-page/?id=6306
Dunn, Chris; Sandler, Mark; A Simulated Comparison of Dithered and Chaotic Sigma-Delta Modulators [PDF]; King`s College, London, UK; Paper 3926; 1994 Available: https://aes2.org/publications/elibrary-page/?id=6306