[help]Fourier transform | Together C & C++ | Page 1

limber fiber Jan 30, 2023, 9:57 AM

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https://pastebin.com/SadWy19f
I tried to manualy implement DFT and FFT.
Unhelpfuly the results are diffrent.
Someone ve an idea what is wrong?

It could be type restriction?
Or maby some wrong real part (2 * multiplicacion missing)?

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frosty obsidianBOT Jan 30, 2023, 9:57 AM

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drifting stirrup Jan 30, 2023, 9:59 AM

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is #define USE MATH DEFINES supposed to be #define USE_MATH_DEFINES ?

limber fiber Jan 30, 2023, 10:53 AM

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And why dft and fft results are diffrent?

limber fiber Jan 30, 2023, 12:14 PM

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I found "-" missing before imag part. But still real part its diffrent in two methods

fallen thunder Jan 30, 2023, 5:55 PM

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limber fiber https://pastebin.com/SadWy19f I tried to manualy implement DFT and FFT. Unhelpfu...

have you confirmed that any of them is correct?

frosty obsidianBOT Jan 31, 2023, 6:54 AM

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frosty obsidianBOT Jan 31, 2023, 7:07 PM

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#[help]Fourier transform