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.[...]
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