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Live Q&A - Efficient DDC Implementation for Analytic Signal Processing
Jim Shima - Available in 17 hours and 25 minutes (2024-10-30 15:00 EDT) - DSP Online Conference 2024
I would agree that in the broad view, real signals are esoteric looking in the freq domain. Analytic signals are surely easier to understand. I agree phase with real signals is a head scratcher!
But for an EE student taking signals and systems, it is kind of ingrained "this is the way" it is. Thus when exposed to analytic signals later on, a crisis of conscience seems to set in.
Is the code in a repo somewhere? Also in the video the left portion of the code was cut off. You could potentially paste the code here as a response.
Yes sorry about that. You can try this repo for the code:
https://github.com/recreationalcombatant/DDC
If that doesnt work let me know and I can try to paste it here.
Your microphone is hypnotic!
Ha! Thanks. Hopefully the talk isn't hypnotic enough to put you to sleep...
15:52: I have heard many people agree that real signals are more intuitive than analytic ones, but are they really? In the frequency domain, I find real signals quite strange. The need to accommodate conjugate symmetry creates a weird factor of 2 in the Nyquist-Shannon sampling theorem. Real mixers spew out an extra spectral component I didn't ask for. And I haven't even mentioned "phase" yet! Real signals are a nightmare!
Thanks for a most enjoyable presentation. I have used exactly the same DDC/DUC architecture in FPGA designs.