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Draw the waterfall for everything that never spoke

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Every capture that is not voice, or whose voice yields five characters
or fewer of transcript, now gets a PNG of the waterfall it would have
painted on screen: spectrogram from the IQ where it was kept, from the
demodulated audio otherwise, captioned and labelled either way.

The browser shows it in the picture panel, but only when there is no
transcript, Morse or decoded data to show instead.

  bandsaunter waterfall [PATH...] [--all] [--redraw] [--min-chars N]

draws them after the fact for recordings already on disk.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016PsWPTweCT6pwxKngvVxcg
This commit is contained in:
The Dust Council 2026-09-03 18:36:00 -07:00
parent 7e8b9b268d
commit dee262e130
17 changed files with 1383 additions and 35 deletions
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7
packaging/make-browse-man.py
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@ -197,6 +197,13 @@ message says which packages would fix it.
Over ssh there is usually no sound server at the far end. The browser and its
transcripts work regardless; only Enter has nothing to do.
.SH DETECTED CALLSIGNS
A capture that produced no readable words has a waterfall drawn beside it
instead \[em] a picture of the signal, which for a data burst or a keyed
carrier is the only view there is. The browser marks it, gives the path in
full, and
.B o
prints it: there is no listening to a data burst.
.PP
Under the transcript, headed
.BR "DETECTED CALLSIGNS:" ,
is every callsign heard in it, with the name and location on the licence.