On Sun, Apr 19, 2020 at 07:44:00AM -0500, David Hagood wrote: > Yes, I know - "If you want it, write it yourself, then". And I may just do > that, but since I hate duplicating effort, I'd like to know if anybody else > has done that, or is doing that.
I've been developing my own SDR modules (C++, a Python interface will be added later). Main reason for that I've never been able to compile and run GR (on a plain ArchLinux system) without running into trouble with at least one of it countless dependencies. One of those modules is a complex in/out Hilbert filter. The I filter is actually just a delay, and the Q filter is the familar anti-symmteric FIR with all coefficients on even positions zero (they are not even used in the actual code). If the GR module is similar, I don't really understand why it doesn't have a complex input. If necessary you could always send the same signal to both I and Q, so nothing would be lost. Ciao, -- FA
