Top "Fft" questions

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

how to extract frequency associated with fft values in python

I used fft function in numpy which resulted in a complex array. How to get the exact frequency values?

python numpy fft
Calculate autocorrelation using FFT in Matlab

I've read some explanations of how autocorrelation can be more efficiently calculated using the fft of a signal, multiplying the …

matlab signal-processing fft correlation
Why does FFT produce complex numbers instead of real numbers?

All the FFT implementations we have come across result in complex values (with real and imaginary parts), even if the …

algorithm math audio signal-processing fft
PIL cannot write mode F to jpeg

I am taking a jpg image and using numpy's fft2 to create/save a new image. However it throws this …

jpeg python-imaging-library fft mode ioerror
FFT library in android Sdk

I am working with android project.I need FFT algorithm to process the android accelerometer data.Is there FFT library …

java android accelerometer fft
Analyze audio using Fast Fourier Transform

I am trying to create a graphical spectrum analyzer in python. I am currently reading 1024 bytes of a 16 bit dual …

python audio signal-processing fft spectrum
Real time pitch detection

I'm trying to do real time pitch detection of a users singing, but I'm running into alot of problems. I've …

audio signal-processing fft pitch pitch-tracking
Python Scipy FFT wav files

I have a handful of wav files. I'd like to use SciPy FFT to plot the frequency spectrum of these …

python scipy fft
Python frequency detection

Ok what im trying to do is a kind of audio processing software that can detect a prevalent frequency an …

python audio fft frequency
Using the Apple FFT and Accelerate Framework

Has anybody used the Apple FFT for an iPhone app yet or know where I might find a sample application …

iphone audio signal-processing fft accelerate-framework