Title :
Recursive least squares algorithms using multirate systems for cancellation of acoustical echoes
Author_Institution :
Inst. fuer Netzwerk- und Signaltheorie, Tech. Hochschule Darmstadt, West Germany
Abstract :
The applications of fast recursive least squares (FRLS) adaptive filters in frequency subbands for cancellation of acoustic echoes is discussed. It reduces the computational complexity significantly. Therefore, a real-time implementation on a multiprocessor system is possible. A multiprocessor architecture for real-time implementation is presented. Simulation results are presented, verifying the performance of the proposed approach
Keywords :
acoustic signal processing; adaptive filters; computerised signal processing; echo suppression; least squares approximations; parallel architectures; real-time systems; acoustical echo cancellation; adaptive filters; computational complexity; fast recursive least squares; frequency subbands; multiprocessor architecture; multirate systems; real-time implementation; Acoustic applications; Adaptive filters; Computational complexity; Computational modeling; Computer architecture; Convergence; Decorrelation; Digital filters; Echo cancellers; Filter bank; Frequency; Least squares methods; Multiprocessing systems; Real time systems; Transversal filters;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.116159
