Title :
Estimating frequency-response function using periodic signals and the f.f.t.
Author :
Nichols, S.T. ; Dennis, L.P.
Author_Institution :
University of Calgary, Department of Electrical Engineering, Calgary, Canada
Abstract :
A technique for estimating a frequency-response function using a periodic pseudorandom binary sequence which is compatible with the fast-Fourier-transform algorithm is presented. A method of synchronising the p.r.b.s. and the sampling for the f.f.t. using a single clock source and two binary counters is described. A simple check on the synchronisations and the identification of an 8th-order lowpass Butterworth filter is provided.
Keywords :
binary sequences; fast Fourier transforms; frequency response; synchronisation; binary sequences; fast Fourier transforms; frequency response; synchronisation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19710452
