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Showing posts with the label Fft

Frequency Analysis In Python

I'm trying to use Python to retrieve the dominant frequencies of a live audio input. For the mo… Read more Frequency Analysis In Python

Fourier Transform In Python 2d

I want to perform numerically Fourier transform of Gaussian function using fft2. Under this transfo… Read more Fourier Transform In Python 2d

How To Generate A Pink Noise Image?

I am trying to replicate 'Frequency Synthesis of Landscapes' by P. Bourke in Python. I thou… Read more How To Generate A Pink Noise Image?

Fast Fourier Transform In Python

I am new to the fourier theory and I've seen very good tutorials on how to apply fft to a signa… Read more Fast Fourier Transform In Python

Python: Frequency Analysis Of Sound Files

I am generating some sound files that play tones at various frequencies with a certain number of ha… Read more Python: Frequency Analysis Of Sound Files

Fft In Matlab And Numpy / Scipy Give Different Results

I am trying to re-implement one of the matlab toolboxes. they use fft over there. when i perform … Read more Fft In Matlab And Numpy / Scipy Give Different Results

Efficiently Compute Inverse Fourier Transform

The following code was suggested in the very nice answer to this question here. My question about i… Read more Efficiently Compute Inverse Fourier Transform

Numpy Fft.pack Vs Fftw Vs Implement Dft On Your Own

I am currently need to run FFT on 1024 sample points signal. So far I have implementing my own DFT… Read more Numpy Fft.pack Vs Fftw Vs Implement Dft On Your Own

Constant Lines Occur In Plot Of Fft With Scipy.fftpack

When I am computing a FFT with scipy.fftpack on a signal and plot it afterwards, I get a constant h… Read more Constant Lines Occur In Plot Of Fft With Scipy.fftpack

Two Dimensional FFT Using Python Results In Slightly Shifted Frequency

I know there have been several questions about using the Fast Fourier Transform (FFT) method in pyt… Read more Two Dimensional FFT Using Python Results In Slightly Shifted Frequency

Constant Lines Occur In Plot Of Fft With Scipy.fftpack

When I am computing a FFT with scipy.fftpack on a signal and plot it afterwards, I get a constant h… Read more Constant Lines Occur In Plot Of Fft With Scipy.fftpack

Can You Compute The Amplitude/power Of Original Signal From Fourier Transform?

After taking the Discrete Fourier Transform of some samples with scipy.fftpack.fft() and plotting t… Read more Can You Compute The Amplitude/power Of Original Signal From Fourier Transform?

Find Period Of A Signal Out Of The FFT

I have a periodic signal I would like to find the period. Since there is border effect, I first cu… Read more Find Period Of A Signal Out Of The FFT

Parseval's Theorem In Python

I'm trying to get some grip on Python's fft functionality, and one of the weird things that… Read more Parseval's Theorem In Python

FFT In Matlab And Numpy / Scipy Give Different Results

I am trying to re-implement one of the matlab toolboxes. they use fft over there. when i perform … Read more FFT In Matlab And Numpy / Scipy Give Different Results