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Design of oversampled uniform dft filter banks with delay specification using quadratic optimization
Responsible organisation
2001 (English)Conference paper (Refereed) PublishedAlternative title
Översamplad design av likformig DFT filterbank med specificerad delay med kvadratisk optimering (Swedish)
Abstract [en]

Subband adaptive filters have been proposed to avoid the drawbacks of slow convergence and high computational complexity associated with time domain adaptive filters. Subband processing introduces transmission delays caused by the filter bank and signal degradations due to aliasing effects. One efficient way to reduce the aliasing effects is to allow a higher sample rate than critically needed in the subbands and thus reduce subband signal degradation. We suggest a design method, for uniform DFT filter banks with any oversampling factor, where the total filter bank group delay may be specified, and where the aliasing and magnitude/phase distortions are minimized.

Abstract [sv]

Filterbank design är av stor betydelse för applikationer där talsignaler skall behandlas. Arbetet beskriver en ny effektiv metod för att skapa översamplade filterbankar för talsignal-applikationer.

Place, publisher, year, edition, pages
Salt Lake City: Institute of Electrical and Electronics Engineers Inc. , 2001.
Keyword [en]
oversampled, subbands, beamforming, quadratic, optimization
National Category
Signal Processing
URN: urn:nbn:se:bth-10130ISI: 000173806500910Local ID: diva2:838170
The 2001 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP'01
Available from: 2012-09-18 Created: 2002-01-31 Last updated: 2015-06-30Bibliographically approved

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Claesson, Ingvar
Signal Processing

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