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Design of Oversampled Uniform DFT Filter Banks with Reduced Inband Aliasing and Delay Constraints

In English

Författare

  • Nedelko Grbic
  • Jan-Mark de Haan
  • Ingvar Claesson
  • Sven Nordholm

Summary, in English

Subband adaptive filters have been proposed to avoid the drawbacks of slow convergence and high computational complexity associated with time domain adaptive filters for acoustic echo cancellation. 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 a uniform DFT filter bank with any over sampling factor, where the total filter bank group delay may be specified, and where the aliasing and magnitude/phase distortions are minimized.

Publiceringsår

2001-08

Språk

Engelska

Sidor

104-107

Publikation/Tidskrift/Serie

Sixth International, Symposium on IEEE Signal Processing and its Applications

Volym

1

Dokumenttyp

Konferensbidrag

Förlag

IEEE - Institute of Electrical and Electronics Engineers Inc.

Ämne

  • Signal Processing

Conference name

Sixth International Symposium on Signal Processing and its Applications (ISSPA 2001)

Conference date

2001-08-13 - 2001-08-16

Conference place

Kuala Lumpur, Malaysia

Status

Published

ISBN/ISSN/Övrigt

  • ISBN: 0-7803-6703-0