Dirk Bell (@DirkBell)
FWIW, I am short on time, but here are a couple of quick observations. Not attempting to specifically explain the DC term, but I don't know why the two plots should...
Note that the single complex mix filter applied to a real signal is not going to give you anything meaningful. Applied to a complex IQ signal it can.
Correct. The poor attenuation comes from essentially taking the plot you have and adding a second plot made from flipping the first left-to-right, so each plot's passband...
The problem I see right away is the filter you designed has very little attenuation in the reject band. That is something that I noted would happen previously....
Step 3 is wrong.You do not want to multiply a HP filter by a cosine. Draw the HP frequency response. Shift HP response to the right, then add HP response shifted...
No. She took the original Taylor Series and made it much faster, hence the Swift Taylor Series.I understand her next project is to speed up the Fast Fourier Transform....
I used this method in a high-performance intercept receiver years ago. It worked great! The differentiator was not a small number of coefficients and its BW exceeded...
As Robert Wolfe said it seems application dependent.I am assuming you are applying a window before your FFT.You might also consider using overlapping windows. Ex....
You need to provide a little more information. 1) Is your objective to remove them from audio? 2) If so, audio transmitted to earphones, or sent out a microphone?...
Hi Rick,Very cool video. Watched it twice.Where is there relevant sampling being done to cause aliasing?Dirk
Not exactly. Look at the more general case.It is possible to have advances and delays whose lengths are the sum of integer and fractional numbers of samples, but...
You are not working with a time domain cosine signal that has repetitive equal periods. You are working with a linear swept tone that linearly increases in frequency...
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