Title :
An influence of signal amplitude variation on interpolated DFT method
Author_Institution :
Inst. of Electron., Silesian Tech. Univ., Gliwice, Poland
Abstract :
In order to obtain high accuracy of frequency measurement via DFT the interpolated DFT method is used. This method makes assumption that measured signal is periodical, particularly with constant amplitude. In this paper an influence of amplitude variation on Interpolated DFT method is analyzed. It occurs that for some decreasing signals amplitude changes are insignificant for Interpolated DFT.
Keywords :
discrete Fourier transforms; frequency measurement; interpolation; signal processing; frequency measurement; interpolated DFT method; signal amplitude variation; Acoustic measurements; Discrete Fourier transforms; Equations; Frequency estimation; Frequency modulation; Mathematical model;
Conference_Titel :
Signals and Electronic Systems (ICSES), 2010 International Conference on
Conference_Location :
Gliwice
Print_ISBN :
978-1-4244-5307-8
Electronic_ISBN :
978-83-9047-4-2
