Fast Fourier transform

Fast Fourier transform - Interesting to have FFT and inverse - Сообщения

#1 Опубликовано: 14.05.2014 10:15:11
jeff2605

jeff2605

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Hello from France

I think it would be very interesting to have the fft() and its inverse ifft() implemented.
This is very useful in data processing in many fields.

Have you thought to implement these functions ?

Best regards and thanks for the work done

jeff
#2 Опубликовано: 14.05.2014 11:52:13
Radovan Omorjan

Radovan Omorjan

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Take a look at this for instance Matlab C++ Math plugin

When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!"
#3 Опубликовано: 14.05.2014 12:19:07
Вячеслав Мезенцев

Вячеслав Мезенцев

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Russia ☭ forever, Viacheslav N. Mezentsev
#4 Опубликовано: 31.12.2015 20:48:20
Jean Giraud

Jean Giraud

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Hello from France

I think it would be very interesting to have the fft() and its inverse ifft() implemented.
This is very useful in data processing in many fields.

Have you thought to implement these functions ?

Best regards and thanks for the work done

jeff

__________________________

That question has not been answered. Who cares Matlab, who cares another "lib" ?
We desperately need the universal "fft", i.e: fft/cfft and the inverse ifft/icfft,
name universaly that way. The code is free and there is one even faster than the
hyperfast Mathcad. We need it coded in the f(x) menu. As well, it must accept
vector and matrix . The twin problem with "fft" is the need for the vectorising
operator ... how "vectorise" is coded in Mathcad ?

No problem to make "fft" [1D,2D] make it "book style" as Smath function but will
be slow, of limited end use on large matrix [image ...].

Jean
#5 Опубликовано: 31.12.2015 23:30:32
Jean Giraud

Jean Giraud

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... Here is the link: http://www.fftw.org/
That reminds me Xavier distributed *.dll of FFTW for Mathcad 11
Not worth the effort, hardly faster than the native Mathcad "fft"

Jean
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