Fourier Examples

#1 Posted: 1/6/2016 11:23:11 PM

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... New/revised/added
idct2 has been doctored and repaired.
In thhe WS [ ... Scrap] Smath does seem to be willing evaluate complex ?

Jean

Fourier Budapest39 Smoothing.sm (28.12 KiB) downloaded 1160 time(s).
Fourier Fejer Lanczos.sm (10.26 KiB) downloaded 1182 time(s).
Fourier Budapest39 Spectrum.sm (36.76 KiB) downloaded 1144 time(s).
Fourier Sampling.sm (30.71 KiB) downloaded 1197 time(s).
Fourier Sampling Complex [Scrap].sm (29.34 KiB) downloaded 972 time(s).
Fourier IDCT-II Smath CODE.sm (38.75 KiB) downloaded 1120 time(s).
Fourier DCT-II [Data].sm (78.87 KiB) downloaded 1034 time(s).

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Davide Carpi 1/7/2016 5:15:00 AM, ioan92 1/7/2016 6:05:00 AM

#2 Posted: 1/8/2016 11:16:54 PM

Jean Giraud

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... Fourier Smpling Complex has been doctored /repaired.
Please, recycle the prevous work sheet "Fourier Sampling complex [Scarp]"
Observe the definition of 'i' imaginary in the program.

Jean

Fourier Sampling Complex.sm (41.39 KiB) downloaded 1178 time(s).

#3 Posted: 1/10/2016 6:27:16 PM

Jean Giraud

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... finally, the "i" imaginary does not have to be included in the program.
I have just checked "ifft" padding 0's: works great, here is proof/application.
Something wrong with "Phase_mod_pi".

Jean

Fourier ifft Padding [Dirac Filter].sm (46.06 KiB) downloaded 998 time(s).

#4 Posted: 1/12/2016 12:36:09 AM

Jean Giraud

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... these two are added mostly as a saving place.

Fourier fft, ifft Sanity.sm (34.86 KiB) downloaded 1132 time(s).
Fourier fft, ifft Reconciliation.sm (30.25 KiB) downloaded 1087 time(s).

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