Large-Amplitude Dithering Mitigates Glitches in Digital-to-Analogue Converters

Arnfinn Aas Eielsen, John-Josef Leth, Andrew Fleming, Adrian Wills, Brett Ninness

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Glitches introduce impulse-like disturbances which are not be readily attenuated by low-pass filtering. This article presents a model that describes the behaviour of glitches, and a method for mitigation based on a large-amplitude dither signal. Analytical and experimental results demonstrate that a dither signal with sufficient amplitude can mitigate the effect of glitches, when used in conjunction with a low-pass filter. The dither signal in conjunction with low-pass filtering essentially converts a glitch from a high-frequency to low-frequency disturbance.

Original languageEnglish
Article number9025028
JournalI E E E Transactions on Signal Processing
Volume68
Pages (from-to)1950-1963
Number of pages14
ISSN1053-587X
DOIs
Publication statusPublished - 2020

Keywords

  • Digital-analogue conversion
  • convolution
  • disturbance reduction
  • dither
  • glitch reduction
  • nonlinear distortion

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