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Convention Paper

Dithered Noise Shapers and Recursive Digital Filters

Authors: Lipshitz, Stanley P.; Wannamaker, Robert A.; Vanderkooy, John

AES Convention 94 · Paper 3515 · March 1993

Abstract

Existing dithered-quantizer theory does not apply directly to the case of dithered recursive digital filters (including noise shapers) because the feedback paths return signals which are not statistically independent of the dither signal, if nonwhite. In this paper we show how the theory can be extended to cover this case as well, and in the process we provide conditions which guarantee that such a filter is free of audible distortion, noise modulation, and input-related changes to its noise spectrum.

Details

Published in
AES Convention 94
AES Convention
94
Paper number
3515
Publication date
March 6, 1993
Session subject
Digital Signal Processing
Affiliation
Audio Research Group, University of Waterloo, Waterloo, Ontario, Canada (See document for exact affiliation information.)
Type
Convention Paper