A robust transform domain echo canceller employing a parallel filter structure

  • Authors:

  • Jiaquan Huo;Ka Fai Cedric Yiu;Sven Nordholm;Kok Lay Teo

  • Affiliations:

  • Western Australian Telecommunications Research Institute (WATRI), A joint venture between The University of Western Australia and Curtin University of Technology, Perth, Australia;Department of Industrial and Manufacturing Systems Engineering, The University of Hong Kong, Hong Kong, PR China;Western Australian Telecommunications Research Institute (WATRI), A joint venture between The University of Western Australia and Curtin University of Technology, Perth, Australia;Department of Mathematics and Statistics, Curtin University of Technology, Perth, Australia

  • Venue:
  • Signal Processing - Special section: Multimodal human-computer interfaces
  • Year:
  • 2006

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Abstract

The proper control of acoustic echoes is of vital significance in modern communication systems. Acoustic echoes are commonly combatted by means of acoustic echo cancellation. A critical issue in acoustic echo cancellation is the control of adaptation of the echo cancellation filter with the possible presence of near-end speech activities. In this paper, a novel echo cancellation structure is proposed. The proposed structure makes use of two parallel adaptive filters. Echo of the two parallel adaptive filters is tailored for a specific operating situation. By so doing, the contradicting requirements of robustness against near-end disturbance and fast convergence and tracking speed are achieved simultaneously.