The Problem of Calculating the Fast-Fourier Transform of a Step-Like Sampled Function
- 1 June 1979
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Instrumentation and Measurement
- Vol. 28 (2) , 97-99
- https://doi.org/10.1109/TIM.1979.4314775
Abstract
The calculation of the fast fourier transform (FFT) for a step-like bounded function with unequal values at boundaries may be performed by using a convenient decomposition of the total curve into two elementary ones, one of them being a linear ramp. The method may be generalized to functions having asymptotic tails which may be approximated by simple analytic functions, the theoretical FFT of which is known.Keywords
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