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Comparison of pole-zero and all-zero modelling of acoustic transfer functions (echo cancellation)

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2 Author(s)
Gudvangen, S. ; R. Holloway & Bedford New Coll., London Univ., UK ; Flockton, S.J.

Echo cancellation in teleconferencing systems or loud-speaking telephones requires the modelling of acoustic transfer functions of rooms. It might he expected that for reverberant acoustical situations a pole-zero representation would be much more economical than an all-zero one. It is shown that this is not the case.

Published in:

Electronics Letters  (Volume:28 ,  Issue: 21 )