fft
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[[Syntax]]: fft(real = VAL, img = VAL) | [[Syntax]]: fft(real = VAL, img = VAL) | ||
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| − | dv> a | + | dv> a=create(1000,1,1,start=0.0,step=0.0628,format=float) |
| − | + | 1000x1x1 array of float, bsq format [4,000 bytes] | |
| − | dv> b = | + | dv> b=cos(a) |
| − | + | 1000x1x1 array of float, bsq format [4,000 bytes] | |
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| + | dv> f = fft(b) | ||
| + | 2x1000x1 array of double, bsq format [16,000 bytes] | ||
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| − | [[Image: | + | [[Image:fft1.png]] [[Image:fft2.png]] [[Image:fft3.png]] |
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Revision as of 12:24, 6 April 2006
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Contents: Description, Arguments, Usage, Examples, Images, Related Functions Supported Under Version: >1.69 Current Davinci Version: 2.27 64-bit Safe: No
Description Perform a fast Fourier transform on an object containing an arbitrary number of samples.
Arguments and Return Values Arguments: A numeric array Return Value: A 2xN array containing the real and imaginary components
Usage Syntax: fft(real = VAL, img = VAL)
Examples dv> a=create(1000,1,1,start=0.0,step=0.0628,format=float) 1000x1x1 array of float, bsq format [4,000 bytes] dv> b=cos(a) 1000x1x1 array of float, bsq format [4,000 bytes] dv> f = fft(b) 2x1000x1 array of double, bsq format [16,000 bytes]
Images
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Recent Core Changes Modified On: 04-06-2006 |
