Title :
On the use of a modified fast affine projection algorithm in subbands for acoustic echo cancelation
Author :
Liu, Q.G. ; Champagne, B. ; Ho, K.C.
Author_Institution :
INRS Telecommun., Ile des Soeurs, Que., Canada
Abstract :
The fast affine projection (FAP) has been proposed recently as a new adaptive filtering algorithm which possesses LMS like complexity but may achieve RLS like convergence. We investigate the use of FAP algorithms in subbands for acoustic echo cancellation (AEC). To this end, some modifications are first made on the FAP based on the consideration of the numerical stability. The modified FAP algorithm is then used in a complex adaptive subband filter structure for AEC. Advantages of the resulting subband FAP over the full-band NLMS scheme in terms of both complexity and performance are demonstrated by simulations
Keywords :
acoustic signal processing; adaptive filters; adaptive signal processing; echo suppression; least mean squares methods; numerical stability; LMS like complexity; RLS like convergence; acoustic echo cancelation; adaptive filtering algorithm; adaptive subband filter; full-band NLMS; modified fast affine projection algorithm; numerical stability; performance; simulations; subbands; Algorithm design and analysis; Autocorrelation; Digital signal processing; Filter bank; Financial advantage program; Projection algorithms; Resonance light scattering; Signal processing; Signal processing algorithms; Vectors;
Conference_Titel :
Digital Signal Processing Workshop Proceedings, 1996., IEEE
Conference_Location :
Loen
Print_ISBN :
0-7803-3629-1
DOI :
10.1109/DSPWS.1996.555534
