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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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4
bandsaunter/config.py
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@ -110,6 +110,10 @@ class ScanConfig:
decode_morse: bool = True
decode_data: bool = True # read packets out of data signals
decode_images: bool = True # SSTV, weather satellites and shortwave fax
# A picture of every capture nobody can read: not voice, or voice
# that produced no words worth the name.
waterfall: bool = True
waterfall_min_chars: int = 5
# -- one file per frequency ------------------------------------------
combine_by_frequency: bool = False