Title :
Comparison of pole-zero and all-zero modelling of acoustic transfer functions (echo cancellation)
Author_Institution :
R. Holloway & Bedford New Coll., London Univ., UK
Abstract :
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.
Keywords :
acoustic signal processing; adaptive filters; architectural acoustics; echo suppression; poles and zeros; reverberation; teleconferencing; transfer functions; IIR filters; acoustic transfer functions; adaptive acoustic echo cancellers; all-zero modelling; echo cancellation; loud-speaking telephones; pole zero modelling; reverberant acoustical situations; rooms; teleconferencing systems;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19921267
