Title :
A fast affine projection algorithm for an acoustic echo canceller using a fixed-point DSP processor
Author :
Oh, Stephen ; Linebarger, Darel ; Priest, Bill ; Raghothaman, Balaji
Author_Institution :
Wireless Commun. Syst., Texas Instrum. Inc., Dallas, TX, USA
Abstract :
We present an empirical analysis of the fast affine projection (FAP) algorithm to be used in an acoustic echo cancellation application using a fixed-point DSP processor. We also introduce a modified FAP algorithm that was developed based on our FAP study. Out analysis study shows that the modified FAP algorithm is more robust and provides more consistent performance than the LMS algorithm. The new FAP algorithm is also numerically efficient and easy to implement with a fixed-point DSP processor
Keywords :
acoustic signal processing; cellular radio; digital arithmetic; digital signal processing chips; echo suppression; land mobile radio; speech processing; telephone sets; LMS algorithm; TMS320C5x; Texas Instruments; acoustic echo canceller; car; cellular phone; empirical analysis; fast affine projection algorithm; fixed point DSP processor; modified FAP algorithm; numerically efficient algorithm; performance; speech processing; Acoustic applications; Algorithm design and analysis; Cellular phones; Digital signal processing; Echo cancellers; Financial advantage program; Instruments; Least squares approximation; Projection algorithms; Resonance light scattering;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on
Conference_Location :
Munich
Print_ISBN :
0-8186-7919-0
DOI :
10.1109/ICASSP.1997.604853
