Title :
Characteristics of acoustic echo cancellers using sub-band sampling and decorrelation methods
Author :
Furukawa, I. ; Ishiyama, Yoshitaka
fDate :
8/4/1988 12:00:00 AM
Abstract :
An acoustic sub-band echo canceller offering high speech quality has been implemented. Echo cancellation in excess of 40 dB was obtained over the 7 kHz frequency band in the hardware with 4000-tap FIR filters. It was confirmed using a decorrelation algorithm that the convergence speed for coloured signals was about three times faster than the conventional NLMS algorithm
Keywords :
echo suppression; speech analysis and processing; 4000-tap FIR filters; 7 kHz; NLMS algorithm; acoustic echo cancellers; convergence speed; decorrelation algorithm; decorrelation methods; speech quality; sub-band sampling;
Journal_Title :
Electronics Letters
