Francisco Leffler, articles

Zero Why does drawing bode plots on poles or zeros give different results?
Why does drawing bode plots on poles or zeros give different results?
How do zeros affect Bode plot?What is the significance of pole and zero in control system?What is the effect of pole and zero locations? How do zero...
Non-linear N-th Power Non-linear Transforms
N-th Power Non-linear Transforms
Which is non-linear transforms?Can matrices represent non-linear transformations?What is non-linear transformation in image processing? Which is non...
Cross-correlation Efficient way to calculate $n$ first elements of cross-correlation using FFT
Efficient way to calculate $n$ first elements of cross-correlation using FFT
How do you find cross-correlation with FFT?How to calculate cross-correlation?What is cross-correlation in frequency domain?What is the difference be...
Periodogram What is the meaning of the scaling difference between my DFT magnitude squared plot and my periodogram plot?
What is the meaning of the scaling difference between my DFT magnitude squared plot and my periodogram plot?
What is the difference between periodogram and power spectral density?What's the difference between periodogram and spectrogram?What is the differenc...
Leakage How to get DFT spectral leakage from convolution theorem?
How to get DFT spectral leakage from convolution theorem?
What is DFT spectral leakage?Is DFT a convolution?What is frequency leakage?What is leakage and windowing? What is DFT spectral leakage?Spectral lea...
Harmonics Harmonics showing up in FFT of processed data
Harmonics showing up in FFT of processed data
Why do harmonics show up in FFT?How do you remove harmonics from FFT?What are harmonics in Fourier transform?What are harmonics in signal processing?...
Fourier What can the graph Fourier transform and its inverse tell you?
What can the graph Fourier transform and its inverse tell you?
What does inverse Fourier transform tell us?What do Fourier transform graphs show?Is inverse Fourier transform same as Fourier transform?What does th...
Frequency How can you get the mean wavelength/frequency of a Discrete Fourier Transform (DFT)?
How can you get the mean wavelength/frequency of a Discrete Fourier Transform (DFT)?
What is the DFT formula?What is DFT frequency?How do you find the frequency resolution in DFT? What is the DFT formula?xn=N1k=0∑N−1Xke2πikn/N. The D...
Kalman How to set initial values of the elements in the covariance matrices in the Kalman filter?
How to set initial values of the elements in the covariance matrices in the Kalman filter?
How do you initialize a Kalman filter?Why covariance matrix is used in Kalman filter?How to fine tune Kalman filter? How do you initialize a Kalman ...