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 1588 time(s).
Fourier Fejer Lanczos.sm (10.26 KiB) downloaded 1615 time(s).
Fourier Budapest39 Spectrum.sm (36.76 KiB) downloaded 1564 time(s).
Fourier Sampling.sm (30.71 KiB) downloaded 1611 time(s).
Fourier Sampling Complex [Scrap].sm (29.34 KiB) downloaded 1335 time(s).
Fourier IDCT-II Smath CODE.sm (38.75 KiB) downloaded 1561 time(s).
Fourier DCT-II [Data].sm (78.87 KiB) downloaded 1387 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 1616 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 1378 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 1551 time(s).
Fourier fft, ifft Reconciliation.sm (30.25 KiB) downloaded 1532 time(s).

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