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1 vote

Effect of FIR filter on the time resolution of the signal

If the noise itself is white noise this by definition means every sample is uncorrelated. When each sample is independent of every other sample, all samples will be uncorrelated and the frequency ...
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0 votes

Effect of FIR filter on the time resolution of the signal

The sampling theorem states that in order to avoid aliasing your sampling rate needs to be higher than twice the highest frequency in your signal. In practice this is a little more complicated: in the ...
  • 36.9k
2 votes

What order of FIR filter is equivalent to an IIR filter for same design specifications and to get same magnitude response

This question could probably be flagged as a duplicate, but I'll answer here and let the mods decide if it's worth keeping. Dan Boschen on Fred Harris' Rule of Thumb. $$ N = \bigg\lfloor\frac{f_s}{\...
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2 votes
Accepted

How to derive filter design (with parameters) from existing FIR weights

Sounds exactly like a description of the Matlab filter design tool, or the Python pyfdax tool. You place zeros close to the unity circle for attenuation; the placement of the zeros is all the ...
3 votes
Accepted

Group delay and number of zeros for a symmetric FIR system

Leading zeros just add a delay of one sample for each zero. Consider the simple case of a filter with coefficients [0,0,1], this is just a 2 sample delay ($z^{-2}$). Similarly, a filter with ...
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6 votes
Accepted

how to implement 0.05Hz high pass filter?

First Order IIR DC Nulling Filter A high pass filter with a very low cut-off frequency is commonly referred to as a "DC Nulling Filter" where the interest is in removing the average offset ...
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3 votes
Accepted

Tell FIR part and IIR part of a signal apart

The formula is the impulse response for the filter and is broken down into a finite impulse response section and an infinite impulse response section. Look carefully at what the function given by $\...
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