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2.7 | 3 ratings Rate this file 17 Downloads (last 30 days) File Size: 4.14 KB File ID: #7494

zoom FFT

20 Apr 2005 (Updated 22 Apr 2005)

This program calculates the zoom FFT of a time history.

File Information

Description

This program calculates the non-destructive zoom Fast Fourier transform of a time history.

The input file must be time(sec) and amplitude(units)

Reference: Randall, Frequency Analysis, Bruel & Kjaer, page 170.

Required Products

Signal Processing Toolbox

MATLAB release

MATLAB 6.5.1 (R13SP1)

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Everyone's Tags	fast fourier transform, signal processing, spectral, spectral analysis, zoom fft(3)
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Comments and Ratings (5)
25 Oct 2005	Bing HE	Thanks
23 Mar 2006	chris f	I tried throwing a file at this routine, but the file type and format for the input requirements are vague and I couldn't get the routine to work. Providing an example input file with the routine would help.
27 Feb 2007	Hsueh M.L.	could you please give me one??? I also happen the same question. Please,thank you.
28 May 2007	antony schutz	tehirs a little mistake on the code when you remmaped the frequency it's (i-1)*dfz.... and thks for the code
16 Mar 2011	Avi	there is no filtering here so aliasing may occured , alos thr ratio of new signal to level noise is quite bad

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