Top "Fft" questions

How to calculate a Fourier series in Numpy?

I have a periodic function of period T and would like to know how to obtain the list of the …

python numpy fft

High Pass Filter for image processing in python by using scipy/numpy

I am currently studying image processing. In Scipy, I know there is one median filter in Scipy.signal. Can anyone …

python numpy image-processing scipy fft

Plotting FFT on octave

I know that FFT changes a function in the time domain to one showed in the frequency domain. However, when …

plot signal-processing fft octave

Fast Fourier Transform in R

I have a dataset with the number of hourly visits an animal made during a period of 12 months. I want …

r time-series fft period spectral-density

Understanding FFT output

I need some help understanding the output of the DFT/FFT computation. I'm an experienced software engineer and need to …

java audio signal-processing accelerometer fft

How to generate the audio spectrum using fft in C++?

I want to generate an audio spectrum (as seen in this video) of a mp3 audio file. Basically this problem …

c++ audio fft spectrum

Android audio FFT to retrieve specific frequency magnitude using audiorecord

I am currently trying to implement some code using Android to detect when a number of specific audio frequency ranges …

java android fft frequency audiorecord

What is the difference between numpy.fft and scipy.fftpack?

Is the later just a synonym of the former, or are they two different implementations of FFT? Which one is …

python numpy scipy fft

Graphing the pitch (frequency) of a sound

I want to plot the pitch of a sound into a graph. Currently I can plot the amplitude. The graph …

java audio fft frequency pitch

FFT on image with Python

I have a problem with FFT implementation in Python. I have completely strange results. Ok so, I want to open …

python image fft dft