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Issues about FFT #6
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As for SciPy, these are all interface to FFTPACK main functions. forward real and complex FFT are wrapped into fft There are many different cases (1d, 2d, nd, cos, sin, etc..), there are helpers functions like fftshift. There are in addition even simple discrete FT, not really fast, but do the work in simple cases. |
Hi, |
In the current implementation it does not. It should be straightforward to adapt the FFTPACK interface to FFTW library. |
Ok, thank you for your reply:)
Adriano Amaricci <notifications@github.com> 于2020年12月7日周一 下午4:33写道:
… In the current implementation it does not. It should be straightforward to
adapt the FFTPACK interface to FFTW library.
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Hello,
I want to analyze the spectrum of a 1D spatial function
dens(x)
by computing the Fourier Transform of it.And I find that there are many interfaces for FFT, such as
rfft_1d_forward
,cfft_1d_forward
andcfft_1d_backward
.What are the differences between them? What are the outputs?
Could you introduce them to me briefly?
Thank you!
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