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Difference Between Equiripple & Least Squares Design for FIR Digital Filters

Here are some additional points FWIW. In filter design the peak sidelobe level (PSL) is an important stopband parameter because it is going to decide the worst-case attenuation. For example, the PSL ...
CSR's user avatar
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How to design IIR digital filters?

If you want to design via specifying the poles and zeros, simply refer to the matched z-transform method on Wikipedia, which makes it trivial and thought I'd add as I can't see it mentioned in any ...
Stephen's user avatar
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2 votes

Why does the frequency sampling method for FIR filter design operate in this manner?

Thanks to all for your help! Here's what I understand, please correct me if I'm wrong When performing a time sampling using $T$ as the sampling step, it produces a frequency periodicization with $1/T=...
minghierid's user avatar
4 votes

Why does the frequency sampling method for FIR filter design operate in this manner?

This answer shows one way of understanding why and how frequency sampling works. Let's assume you're given a desired complex frequency response $H(\omega)$ on the interval $\omega\in[0,\pi]$, where $\...
Matt L.'s user avatar
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2 votes

Why does the frequency sampling method for FIR filter design operate in this manner?

Interesting to see the links and history from Dan and Robert and reference to Matt's thesis and derivation for FDLS, which I hadn't viewed previously. This is similar to approaches we've used since ...
vml's user avatar
  • 51
0 votes

Recover high pass filtered square wave

I tried another approach to get the square wave restored from linked IQ data. After looking the data I noticed that turning points of square wave are those positive values (first ones after changing ...
Juha P's user avatar
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3 votes
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Why does the frequency sampling method for FIR filter design operate in this manner?

Explanation: The impulse response and frequency response of a filter are Fourier Transform pairs. The time domain response of a filter is its impulse response: you put an impulse at the input of the ...
Dan Boschen's user avatar
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4 votes

Why does the frequency sampling method for FIR filter design operate in this manner?

This is how I would define the frequency-sampling method. Assuming linear phase (to start with). Draw out your desired frequency response magnitude, with as much detail as you need to to define the ...
robert bristow-johnson's user avatar

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