Improved adaptive noise cancellation using allpass UR filter banks

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this paper, a subband noise canceller that Is based on using low complexity infinite impulse response HR filter banks at the analysis stage is proposed. Aliasing distortion is greatly reduced this way, while amplitude distortion is minimised by optimising afiniteimpulse response FIR filter bank at the synthesis stage. The motivation behind this work is the fact that, the least mean square LMS adaptive noise cancellers suffer from slow convergence due to coloured interfering signals, as well as high computational burden, due to long signal paths in acoustic environments. Efficiency of the proposed canceller was evaluated experimentally for white and coloured interferences. The contribution of this work is brought about by offering a design that is capable of improving convergence behaviour of the adaptive noise canceller with low Implementation cost. Compared to similar literature solutions, the proposed scheme avoids the use of notch filtering or phase equalisers. The new scheme offers an improved performance and a lower computational complexity than that offered by oversampled FIR filter banks solution.

Original languageEnglish
Pages (from-to)45-51
Number of pages7
JournalHKIE Transactions Hong Kong Institution of Engineers
Volume17
Issue number3
Publication statusPublished - 2010

Fingerprint

Filter banks
FIR filters
IIR filters
Equalizers
Computational complexity
Acoustics
Costs

Keywords

  • Adaptive filtering
  • Allpass filters
  • Filter banks
  • Noise cancellation

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Improved adaptive noise cancellation using allpass UR filter banks. / Noor, Ali O Abid; Abdul Samad, Salina; Hussain, Aini.

In: HKIE Transactions Hong Kong Institution of Engineers, Vol. 17, No. 3, 2010, p. 45-51.

Research output: Contribution to journalArticle

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