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 1514 time(s).
Fourier Fejer Lanczos.sm (10.26 KiB) downloaded 1529 time(s).
Fourier Budapest39 Spectrum.sm (36.76 KiB) downloaded 1493 time(s).
Fourier Sampling.sm (30.71 KiB) downloaded 1533 time(s).
Fourier Sampling Complex [Scrap].sm (29.34 KiB) downloaded 1259 time(s).
Fourier IDCT-II Smath CODE.sm (38.75 KiB) downloaded 1485 time(s).
Fourier DCT-II [Data].sm (78.87 KiB) downloaded 1309 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 1540 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 1305 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 1478 time(s).
Fourier fft, ifft Reconciliation.sm (30.25 KiB) downloaded 1452 time(s).

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