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Juan Ugarte (@ing_jpu)

Researcher in dynamical systems using advanced DPS techniques and mathematical modeling and simulation

The corrected implementation should not generate an increasing error. If it does, you should debug your code.Suerte
Dear liwang, as pointed out before, the result will not generate an error strictly equal to zero. In addition, from your last error plot, it is not increasing with...
Hi liwang,The reconstruction formula is wrong.  Since a cosine function is being used as the basis, the sum should be performed only over the DFT coefficients...

Re: filtering using FFT/iFFT

Reply posted 1 year ago (02/11/2024)
The ideal filter has an acausal (non causal) impulse response, which constrains its implementation. If your application does not requires returning to time domain...
First, the Fourier Transform (the frequency response of the system) can be recovered from the z-domain by evaluating the z-transform at the unit circumference with...

Re: Extend FFT spectrum question

Reply posted 3 years ago (02/16/2022)
More than the feasibility, I suppose your question is related with the meaning of the resulting "strange" signal". If the the Nyquist frequency is 22.050 kHz and...

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