Inspectrum works for saving a portion of a signal (as does Baudline). I think the request here was for something automatic/runtime, though.
On Fri, Aug 26, 2022 at 7:25 AM Johannes Demel <de...@ant.uni-bremen.de> wrote: > Hi all, > > since Audacity is targeted at audio samples, it might be interesting to > have a tool that is more targeted at IQ samples. > > I've heard/read about quite a few people who use "inspectrum": > https://github.com/miek/inspectrum > (I hope this is the correct repo.) > > A somewhat older tool might be "baudline": > https://www.baudline.com/ > (I used it in the past but I'd probably switch to inspectrum nowadays). > > Cheers > Johannes > > > On 25.08.22 20:33, Mike Markowski wrote: > > James, > > > > I find an easy approach is to write the signal out as alternating i/q > > binary if it's not already. That can be read into audacity as stereo > > (File -> Import -> Raw), edited and written back out as raw data without > > header (File -> Export -> Export Multiple, and choose Raw Headerless). > > Don't worry about audacity's sample rate because you're editing raw i/q > > anyway. This allows editing down to the sample level. > > > > Good luck! > > Mike ab3ap > > > > On 8/25/22 1:52 PM, James Wanga wrote: > >> I'm receiving a phase modulated signal representing a periodic pulsed > >> byte that looks something like this: > >> > >> > -------------|-|||--||-------------|||--||||-------------|--||||-|------------- > > >> > >> > >> I'm trying to understand how I might split this signal roughly halfway > >> between each pulse of activity so I can save each pulse as a separate > >> IQ fil, bit like this: > >> > >> ------|-|||--||------ > >> > >> -------|||--||||------- > >> > >> ------|--||||-|------ > >> > >> The split does not have to be precise, it only needs to avoid > >> bisecting any of the pulses. Here are some things I've tried.- > >> Creating a custom block on the receiver that uses a timing interval. > >> Unfortunately, the pulses aren't perfectly periodic so eventually this > >> causes the split to drift.[...] > > >
