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Hybrid realisation of an adaptive filter for real-time noise-cancelling applications

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2 Author(s)
Schwarz, T. ; Technion - Israel Institute of Technology, Department of Electrical Engineering, Haifa, Israel ; Malah, D.

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.

Published in:

Electronics Letters  (Volume:15 ,  Issue: 21 )