Estimating frequency-response function using periodic signals and the f.f.t.
- 4 November 1971
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 7 (22) , 662-663
- https://doi.org/10.1049/el:19710452
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
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