Title :
Hybrid realisation of an adaptive filter for real-time noise-cancelling applications
Author :
Schwarz, T. ; Malah, David
Author_Institution :
Technion - Israel Institute of Technology, Department of Electrical Engineering, Haifa, Israel
Abstract :
An efficient hybrid realisation of an adaptive filter for real-time noise-cancelling applications is described. The filter is based on an analogue tapped delay line but its coefficients are digital and are updated according to a simplified l.m.s. algorithm. A single multiplying d.a. device is used for performing the multiplications. The structure of the filter, its performance and processed examples are presented.
Keywords :
delay lines; digital filters; signal processing; adaptive filter; analogue tapped delay line; digital coefficients; hybrid realisation; l.m.s. algorithm; least mean square algorithm; multiplying digital analogue device; processed examples; real time noise cancelling applications;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19790477
