Top "Fft" questions

FFT is short for fast Fourier transform, any of a set of algorithms for quickly computing the discrete Fourier transform (DFT).

Plotting a fast Fourier transform in Python

I have access to NumPy and SciPy and want to create a simple FFT of a data set. I have …

python numpy scipy fft
only integers, slices (`:`), ellipsis (`...`), numpy.newaxis (`None`) and integer or boolean arrays are valid indices

I am implementing fft as part of my homework. My problem lies in the implemention of shuffling data elements using …

python python-3.x numpy fft dft
Understanding Matlab FFT example

I am new to matlab and FFT and want to understand the Matlab FFT example. For now I have two …

matlab fft
How do I obtain the frequencies of each value in an FFT?

I have an FFT result. These are stored in two double arrays: a real part array and an imaginary part …

c# signal-processing fft
Peak-finding algorithm for Python/SciPy

I can write something myself by finding zero-crossings of the first derivative or something, but it seems like a common-enough …

python scipy fft hough-transform
An implementation of the fast Fourier transform (FFT) in C#

Where can I find a free, very quick, and reliable implementation of FFT in C#? That can be used in …

c# signal-processing fft
How to plot a 2D FFT in Matlab?

I am using fft2 to compute the Fourier Transform of a grayscale image in MATLAB. What is the common way …

matlab image-processing plot fft
FFT in a single C-file

I was looking for a FFT implementation in C. However, I am not looking for a huge library (like FFTW) …

c fft
Reliable and fast FFT in Java

since I don't want to do it on my own, I am searching for a good FFT implementation for java. …

java fft
Units of a Fourier Transform (FFT) when doing Spectral Analysis of a Signal

My question has to do with the physical meaning of the results of doing a spectral analysis of a signal, …

math physics fft measurement spectrum