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
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.[...]
> >
>
