Parallel allpass filters

Heaton, Mattew G (1999). Parallel allpass filters Honours Thesis, School of Computer Science and Electrical Engineering, The University of Queensland.

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Author Heaton, Mattew G
Thesis Title Parallel allpass filters
School, Centre or Institute School of Computer Science and Electrical Engineering
Institution The University of Queensland
Publication date 1999
Thesis type Honours Thesis
Total pages 120
Language eng
Subjects 0906 Electrical and Electronic Engineering
Formatted abstract

This thesis presents a study of the characteristcs and advantages of a little known class of filters called “Parallel Allpass Filters”. They rely on controlling the phase of two parallel allpass sub-filters so that, when added, an overall non-unity magnitude response is achieved through constructive and destructive interference. A method for decomposing IIR filters into such an implementation is also presented. To examine the characteristics and design of these filters, a Matlab Design Toolbox has been written and then used to examine their properties. It is found that these filters are extremely efficient, and are stable against many of the problems associated with both FIR and IIR filters. This thesis finishes with two example implementations. It is concluded that, while they are little known, Parallel Allpass Filters constitute a worthwhile class of filters that deserve a place within the Signal Processing Industry.

Keyword Parallel allpass filter
Additional Notes * 4th year electrical engineering theses and information technology abstracts. 1999

Document type: Thesis
Collection: UQ Theses (non-RHD) - UQ staff and students only
Citation counts: Google Scholar Search Google Scholar
Created: Wed, 22 May 2013, 11:48:11 EST by Mr Yun Xiao on behalf of Scholarly Communication and Digitisation Service