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Showing posts with the label Fft

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

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

How Do I Add Weighting To A Curve Not The Data Points During Fitting? What Import/func Do I Use?

I've tried scipy.optimize import curve_fit but it only seems to change the data points. I want … Read more How Do I Add Weighting To A Curve Not The Data Points During Fitting? What Import/func Do I Use?

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

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

Shift Theorem In Discrete Fourier Transform

I'm trying to solve a problem with python+numpy in which I've some functions of type that … Read more Shift Theorem In Discrete Fourier Transform

Sympy Simplify Eliminate Imaginary Numbers

I'm trying to get the cosine similarity between convolved vectors. Because I'm using fast f… Read more Sympy Simplify Eliminate Imaginary Numbers

FFT Wrong Value?

Randomly building a very easy sound spectrum analyzer. Given this python code: http://rosettacode.o… Read more FFT Wrong Value?